CN109187284B - Cement slurry testing equipment and method - Google Patents
Cement slurry testing equipment and method Download PDFInfo
- Publication number
- CN109187284B CN109187284B CN201811042320.8A CN201811042320A CN109187284B CN 109187284 B CN109187284 B CN 109187284B CN 201811042320 A CN201811042320 A CN 201811042320A CN 109187284 B CN109187284 B CN 109187284B
- Authority
- CN
- China
- Prior art keywords
- cement slurry
- cylinder
- sand
- cement
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/04—Investigating osmotic effects
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses cement slurry testing equipment which is used for testing the permeability of cement slurry and comprises a first shell and a second shell, wherein the second shell and the first shell are detachably and fixedly connected to form a cylinder, the inner wall of the first shell and the inner wall of the second shell enclose to form an accommodating cavity positioned in the cylinder, and the accommodating cavity is provided with an opening for injecting a testing material. The invention also discloses a cement slurry testing method. The method can adapt to the characteristics of the matrix to be repaired and reinforced, and can rapidly and effectively and accurately quantitatively characterize the permeability of the slurry.
Description
Technical Field
The invention relates to the technical field of material testing, in particular to a cement slurry testing method and cement slurry testing equipment.
Background
Permeable cement slurry is generally needed in construction occasions such as crack repair, ground reinforcement and the like, and the permeable cement slurry can permeate into gaps of a matrix and then is solidified to achieve the purpose of repair or reinforcement.
However, the permeability of the slurry is mostly characterized by the viscosity of the slurry, but the permeability of the slurry is also related to the characteristics of the matrix itself to be repaired and reinforced, such as the width of the crack, the particle size of the soil, and the like. The slurry with the same viscosity has different permeability in different matrixes, so that the viscosity is not intuitive and accurate to represent the permeability of the slurry, and the permeability of the slurry cannot be effectively and quantitatively represented.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide cement slurry testing equipment, which aims to adapt to the characteristics of a matrix to be repaired and reinforced and quickly carry out effective and accurate quantitative characterization on the permeability of slurry.
To achieve the above object, the present invention provides a cement paste testing apparatus for testing permeability of cement paste, comprising:
a first housing;
the second casing, with fixed connection formation barrel can be dismantled to first casing, the inner wall of first casing with the inner wall of second casing encloses to close and forms and is located the inside chamber that holds of barrel, it has the opening that supplies the test material to pour into to hold the chamber.
Preferably, first casing include first body and with first baffle of first body connection, the second casing include the second body and with second baffle of second body connection, first body the second body first baffle with the second baffle encloses to close and forms hold the chamber, first baffle with the second baffle is connected and is formed hold the diapire in chamber, diapire interval distribution is equipped with a plurality of bleeder vents.
Preferably, the first partition board is connected with the first body in an inserting and matching mode, the second partition board is connected with the second body in an inserting and matching mode, and the first partition board and the second partition board are integrally formed.
Preferably, the cement paste testing equipment further comprises a base, one end, close to the bottom of the accommodating cavity, of the barrel is installed above the base, an airflow channel is arranged in the base, air holes are formed in the side wall of the base, and the air holes are communicated with the airflow channel.
Preferably, the first casing is provided with a first connecting portion, the second casing is provided with a second connecting portion, the cement paste testing equipment further comprises a fastener, and the fastener can be detached and fixedly connected with the first connecting portion and the second connecting portion.
In addition, in order to achieve the above object, the present invention also provides a cement paste testing method, comprising the steps of:
assembling and installing a first shell and a second shell into a cylinder;
adding sand materials with target particle sizes into the accommodating cavity of the cylinder body to form a sand layer;
pouring the cement slurry to be tested into the accommodating cavity, and paving the cement slurry above the sand layer;
after the cement slurry in the accommodating cavity is hardened, disassembling the cylinder body and taking out the hardened cylinder body;
measuring a penetration depth of the hardened cylinder in the sand layer.
Preferably, the step of pouring the cement paste to be tested into the containing cavity comprises the following steps:
measuring a preset volume of cement slurry to be measured;
and pouring the cement slurry to be detected with a preset volume into the accommodating cavity.
Preferably, the step of measuring the penetration depth of the hardened cylinder in the sand layer comprises:
measuring the total volume of the hardened cylinder;
calculating a penetration volume of the hardened cylinder in the sand layer according to the total volume and the preset volume;
calculating the penetration depth from the penetration volume.
Preferably, the step of adding the sand material with the target grain size into the accommodating cavity of the cylinder to form a sand layer comprises the following steps:
determining a target gap width or a particle size of a target structural unit;
determining the target particle size according to the target gap width or the particle size of the target structural unit;
screening out the standby sand material according to the target particle size;
and adding the screened sand material into the containing cavity of the cement slurry testing equipment to form the sand layer.
Preferably, the step of adding sand into the accommodating cavity of the cylinder to form a sand layer comprises the following steps:
adding the sand material into the accommodating cavity to a first preset height to form the sand layer;
the cement slurry to be tested is poured into the containing cavity, and the step of laying the cement slurry above the sand layer comprises the following steps:
and pouring the cement slurry to be detected into the accommodating cavity to a second preset height, and paving the cement slurry above the sand layer.
According to the cement slurry testing equipment provided by the embodiment of the invention, the first shell and the second shell are assembled and installed into the cylinder, and the sand material with the target particle size and the cement slurry to be tested are sequentially added into the accommodating cavity of the cylinder to form the sand layer and the slurry layer, wherein the sand material with the target particle size can represent the self characteristic of a base body to be repaired and reinforced by using the cement slurry to be tested, after the cement slurry is hardened, the penetration depth of the cement slurry with better penetration performance in the sand layer is larger, the penetration performance of the cement slurry to be tested is represented by measuring the penetration depth of the hardened cylinder in the sand layer, and the measured penetration depth can visually and accurately represent the penetration performance of the cement slurry to be tested in the base body, so that the cement slurry testing equipment is suitable for the characteristic of the base body to be repaired and reinforced, and the penetration performance of the slurry is effectively and accurately quantified and represented. The cylinder body is formed by assembling and installing the first shell and the second shell, so that the hardened cylinder body can be taken out of the cylinder body conveniently after the subsequent cement slurry is hardened, and the testing efficiency of the permeability of the slurry is improved.
Drawings
FIG. 1 is a schematic flow chart of one embodiment of a method for testing a cementitious slurry in accordance with embodiments of the present invention;
FIG. 2 is a schematic flow chart of another embodiment of a method for testing a cementitious slurry in accordance with an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another embodiment of a method for testing a cementitious slurry in accordance with an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a cement paste apparatus for containing a cement paste to be tested according to an embodiment of the present invention, the cross-sectional view being taken along an axial direction;
FIG. 5 is a schematic top view of a cementitious slurry system according to an embodiment of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: the cement slurry testing equipment comprises a first shell and a second shell, wherein the second shell and the first shell are detachably and fixedly connected to form a cylinder, the inner wall of the first shell and the inner wall of the second shell enclose a containing cavity which is formed inside the cylinder, and the containing cavity is provided with an opening for injecting a testing material. Assembling a first shell and a second shell into a cylinder; adding sand materials with target particle sizes into the accommodating cavity 300 of the cylinder body to form a sand layer 02; pouring the cement slurry to be tested into the accommodating cavity 300 and paving the cement slurry above the sand layer 02; after the cement slurry in the accommodating cavity 300 is hardened, disassembling the cylinder body and taking out the hardened cylinder body; the penetration depth of the hardened cylinder in the sand layer 02 is measured.
In the prior art, the permeability of the cement slurry is represented by viscosity, the influence of the characteristics of a matrix is not considered, the measured permeability of the slurry is not intuitive and accurate, and effective quantitative representation of the permeability of the slurry cannot be realized.
The invention provides a solution, wherein a first shell and a second shell are assembled to form a cylinder body with a containing cavity, sand and cement slurry are sequentially added into the containing cavity, the permeability of the cement slurry is represented by the penetration depth of a hardening cylinder body in a sand layer 02, the measured result is suitable for the characteristics of a matrix to be repaired and reinforced, and the permeability of the slurry can be rapidly and effectively and accurately quantitatively represented.
In the embodiment of the invention, a cement slurry testing method is provided for testing the permeability of cement slurry. In particular, the method is used to test the permeability of cement slurries in structures with fine crevices.
Referring to fig. 1, the cement paste testing method includes the steps of:
step S10, assembling the first shell and the second shell into a cylinder;
the cement slurry testing device for testing the permeability of the cement slurry in the embodiment of the invention is cylindrical, and specifically comprises a cylinder formed by detachably and fixedly connecting a first shell and a second shell, wherein a containing cavity 300 for containing a testing material (such as sand, cement slurry and the like) is arranged in the cylinder, and the containing cavity 300 is provided with an opening for injecting the testing material.
The concrete structure of the cement paste testing device can refer to the following concrete embodiments of the cement paste testing device, and is not described herein.
Step S20, adding sand materials with target grain sizes into the accommodating cavity 300 of the cylinder body to form a sand layer 02;
the sand material with the target grain size is used for characterizing the intrinsic property of a matrix in which a gap is to be repaired and reinforced by using the cement slurry to be tested. When the matrix is a complete solid with a compact structure, the target particle size can be determined according to the width, the depth and the like of a gap of the matrix; when the substrate is a structural layer composed of a plurality of structural units (e.g., land, sand, etc.), the target particle size may be determined according to the particle size of solid particles in the substrate, etc. Wherein, the larger the width of the gap, the shallower the depth of the gap, and the larger the particle size of the solid particles, the larger the corresponding determined target particle size.
After the sand material is added, the surface of the sand layer 02 is leveled, which is beneficial to the accuracy of the subsequent penetration depth measurement. Specifically, the cylinder may be slightly shaken to level the surface of the sand layer 02, or an auxiliary tool having a flat surface may be inserted into the receiving chamber 300, and the flat surface may be used to level the surface of the sand layer 02.
Step S30, pouring cement slurry to be tested into the accommodating cavity 300 and paving the cement slurry above the sand layer 02;
the cement slurry to be measured is slowly poured into the containing cavity 300 to form a slurry layer, the flow rate of the cement slurry in the process can not exceed the preset flow rate, and therefore the phenomenon that the penetration depth of a subsequent hardening column body is inaccurate in measurement or the penetration of the cement slurry in sand is influenced due to the fact that bubbles are formed in the cement slurry in the containing cavity 300 is avoided. The cement paste poured into the housing chamber 300 is laid over the sand layer 02 and slowly permeates into the sand layer 02 from the face of the sand layer 02 and the paste layer with the permeation.
Step S40, after the cement slurry in the accommodating chamber 300 is hardened, disassembling the cylinder and taking out the hardened cylinder;
the whole cylinder is maintained according to certain conditions, so that the cement slurry originally positioned in the slurry layer in the accommodating cavity 300 and the cement slurry permeating into the sand layer 02 are coagulated and hardened. After the cement paste in the accommodating chamber 300 is hardened, the first and second casings are separated, and the hardened column in the cylinder is taken out. The hardening column body comprises a first column body formed by hardening cement slurry in the slurry layer and a second column body which is connected with the first column body and formed by hardening the cement slurry penetrating into the sand layer 02.
After the hardened cylinder is taken out, the surface of the hardened cylinder can be cleaned by using the modes of water washing, blow washing and the like, loose sand grains remained on the surface are removed, and the subsequent measurement of the penetration depth is more accurate.
Step S50, measuring the penetration depth of the hardened cylinder in the sand layer 02.
The larger the penetration depth is, the better the penetration performance of the cement paste 01 to be measured in the sand material with the target grain diameter is.
Wherein the depth of penetration can be measured directly. The first column body is formed by hardening cement slurry, so that the first column body is a regular column body, and the second column body is formed by coagulating sand after the cement slurry permeates, so that the second column body is in an irregular shape. And taking the maximum distance between one end of the second cylinder along the axial direction of the hardening cylinder and the reference line as the penetration depth by using a scale.
In this embodiment, a cement slurry testing method is provided, in which a first casing and a second casing are assembled and installed into a cylinder, and a sand layer 02 and a slurry layer are formed by sequentially adding a sand material with a target particle size and a cement slurry to be tested into a containing cavity 300 of the cylinder, wherein the sand material with the target particle size can represent the characteristics of a substrate to be repaired and reinforced by using the cement slurry to be tested, after the cement slurry is hardened, the penetration performance of the cement slurry to be tested is represented by measuring the penetration depth of a hardened cylinder in the sand layer 02, and the measured penetration depth can visually and accurately represent the penetration performance of the cement slurry to be tested in the substrate, so as to adapt to the characteristics of the substrate to be repaired and reinforced, and effectively and accurately quantify and represent the penetration performance of the slurry. The cylinder body is formed by assembling and installing the first shell and the second shell, so that the hardened cylinder body can be taken out of the cylinder body conveniently after the subsequent cement slurry is hardened, and the testing efficiency of the permeability of the slurry is improved.
Specifically, in order to facilitate comparison of the permeability of different cement slurries in the sand material with the same target particle size, or determination of subsequent penetration depth, etc., the cement slurry to be measured with a preset volume can be poured into the accommodating cavity 300. At this time, the step of pouring the cement paste to be measured into the accommodating chamber 300 includes:
step S31, measuring a preset volume of cement slurry to be measured;
measuring the preset volume of the cement slurry to be measured by using a measuring cylinder or other containers with fixed volume (equal to the preset volume) or scales.
Step S32, pouring a preset volume of cement slurry to be tested into the accommodating cavity 300.
In addition, when a preset volume of cement paste to be measured is to be poured into the accommodating chamber 300, the step of pouring the cement paste to be measured into the accommodating chamber 300 includes:
step 21, adding the sand material into the accommodating cavity 300 to a first preset height to form the sand layer 02;
first predetermined height is the height of sand bed 02, can set up according to actual conditions, to guaranteeing that cement thick liquids can not permeate to the diapire that holds chamber 300.
The cement slurry to be measured is poured into the accommodating cavity 300 and laid above the sand layer 02, and the step of laying the cement slurry to be measured comprises the following steps:
step S33, pouring the cement slurry to be tested into the accommodating cavity 300 to a second preset height, and paving the cement slurry above the sand layer 02.
The second preset height is larger than the first preset height, and the slurry layer height is the difference between the second preset height and the first preset height. The second preset height is calculated according to the preset volume and the sectional area of the cylinder, and the sectional area of the cylinder is fixed, so that cement slurry is measured without an additional container in the mode, and the volume of the cement slurry 01 to be measured added into the accommodating cavity 300 can be guaranteed to be the preset volume. In addition, the cement paste is measured without using other measuring containers in the process, so that the influence of the residue of the cement paste in the measuring containers on the subsequent penetration depth test result is avoided, and the measured penetration depth is more accurate.
The first preset height and the second preset height can be marked at corresponding positions on the cylinder body, so that the operation of a tester is facilitated.
Specifically, referring to fig. 2, the step of measuring the penetration depth of the hardened cylinder in the sand layer 02 includes:
step S51, measuring the total volume of the hardening column;
the total volume of the hardened cylinders can be measured using drainage, weighing, etc.
Step S52, calculating the penetration volume of the hardened cylinder in the sand layer 02 according to the total volume and the preset volume;
the infiltration volume is specifically the volume of the cement slurry that sets the sand in the sand layer 02. The difference between the total volume of the hardened cylinder and the preset volume may be used as the penetration volume of the hardened cylinder in the sand layer 02. In addition, because the volume of the cement paste before and after hardening is different, a corresponding correction coefficient can be determined according to the difference, and the permeation volume is calculated by combining the total volume and the preset volume.
Step S53, calculating the penetration depth according to the penetration volume.
Because the sectional area of the cylinder is fixed, the penetration depth can be calculated by dividing the penetration volume by the sectional area of the cylinder and is used as a characterization parameter of the permeability of the cement paste 01 to be detected.
In addition, the permeability of the cement slurry to be tested can also be directly characterized by the permeation volume obtained in step 52. The larger the penetration volume is, the better the penetration performance of the cement paste 01 to be tested in the sand material with the target grain diameter is.
In this embodiment, because factors such as sand material maldistribution, air influence, the second cylinder presents irregular shape, therefore, singly gets the distance of a certain point of second cylinder to the datum line and probably has great error as the depth of penetration. Therefore, in order to obtain a more accurate penetration depth and more accurately represent the penetration performance of the cement paste 01 to be measured in the sand with the target grain size, the penetration depth or the penetration volume can be determined as a penetration parameter for representing the penetration performance of the sand in the above manner.
Further, referring to fig. 3, the step of adding sand material with a target grain size into the accommodating cavity 300 of the barrel to form a sand layer 02 includes:
step S22, determining a target gap width or a particle size of a target structural unit;
the properties of different matrices with gaps can be characterized by the width of the gaps or the particle size of the particles therein. Therefore, when a matrix with gaps needs to be repaired or reinforced by using the cement paste 01 to be measured, if the matrix is a compact complete solid (non-loose structure), the width of the gaps in the matrix can be measured as a target gap width; when the substrate is a structural layer (loose structure) composed of a plurality of structural units, the particle diameter of the structural unit constituting the substrate (e.g., the particle diameter of soil, etc.) can be measured as the particle diameter of the target structural unit.
Step S23, determining the target particle size according to the target gap width or the particle size of the target structural unit;
because solid particles with different particle sizes correspondingly form different gaps, the larger the particle size of the solid particles is, and the larger the gap between the solid particles is when a plurality of solid particles are compactly spliced. Based on the principle, different gap widths can correspond to different grain diameters of sand materials, and the grain diameter of the corresponding sand material can be determined as the target grain diameter according to the determined target gap width.
Further, when the shapes of the solid particles are the same, the gaps formed by the solid particles having the same particle diameter are the same. Therefore, whether the shape of the target structural unit in the matrix is consistent with that of the sand can be judged, and if so, the particle size of the target structural unit can be directly used as the target particle size; if they do not match, a conversion factor of the size of the gap between the two shapes is obtained, and the target particle diameter is calculated from the particle diameter of the target structural unit and the conversion factor.
Step S24, screening the standby sand material according to the target particle size;
the spare sand material may be sand particles obtained from a raw material supplier and include a plurality of different sizes. After the target particle size is determined, a screen with a corresponding mesh number can be selected for screening the standby sand.
Step S25, adding the screened sand into the containing cavity 300 of the cement slurry testing equipment to form the sand layer 02.
By the mode, the method can adapt to the characteristics of the matrix to be repaired or reinforced, and the proper cement slurry is selected for repairing or reinforcing the matrix through the permeability of the cement slurry.
Further, in the cement slurry testing method, after the step S50, it may be determined whether the penetration depth is greater than or equal to a preset threshold, and when the penetration depth is greater than or equal to the preset threshold, the corresponding gap width is determined according to the target particle size as a guess of the width of the permeable crack of the cement slurry, so as to repair or reinforce the matrix of the crack having the width by using the cement to be tested. When the obtained penetration depth is less than the preset threshold value, the cement slurry to be tested is considered to be not suitable for repairing or reinforcing the matrix of the crack with the width. By the mode, the matrix with the cracks can be repaired or reinforced conveniently by selecting proper cement slurry.
In addition, the embodiment of the invention also provides cement slurry testing equipment which is applied to the cement slurry testing method and used for testing the permeability of the cement slurry. Referring to fig. 4, the cement paste testing apparatus includes a first housing 100 and a second housing 200. The first casing 100 and the second casing 200 are detachably and fixedly connected to form a cylinder, the inner wall of the first casing 100 and the inner wall of the second casing 200 enclose a containing cavity 300 located inside the cylinder, and the containing cavity 300 has an opening for injecting a test material.
The inner wall of the first housing 100 forms a first open chamber, and the inner wall of the second housing 200 forms a second open chamber. Specifically, the cross section of the first casing 100 and the second casing 200 is in the shape of a semicircular arc, and the connected cylinder is a cylinder. In addition, the shapes of the first casing 100, the second casing 200 and the cylinder can be specifically set according to actual requirements, for example, the cylinder takes a prism shape or other irregular shapes.
After the first casing 100 and the second casing 200 are detachably and fixedly connected to form a cylinder, in the cylinder, the inner wall of the first casing 100 and the inner wall of the second casing 200 enclose a containing cavity 300 having an opening, and the opening can be used for injecting related testing materials (such as sand, cement slurry and the like) for testing the permeability of cement slurry into the containing cavity 300. Specifically, the first opening cavity has a first cavity opening along the axial direction of the first housing 100, the second opening cavity has a second cavity opening along the axial direction of the second housing 200, and when the first housing 100 and the second housing 200 are detachably and fixedly connected, the edge of the first cavity opening closes the second cavity opening.
Specifically, the first casing 100 and the second casing 200 may be detachably and fixedly connected through fasteners such as a buckle, a screw, a bolt, a plug, and the like, and the first casing 100 and the second casing 200 may also be detachably and fixedly connected through an interference fit plug-in manner.
The first casing 100 has a flange along the axial edge of the cylinder, and the second casing 200 has a groove along the axial edge of the cylinder, the groove being engaged with the flange. When the first housing 100 and the second housing 200 are assembled, the flange of the first housing 100 may be inserted into the groove of the second housing 200 to achieve the positioning connection between the first housing 100 and the second housing 200. Wherein, the flange and the groove may be connected by interference fit to achieve the fixation between the first casing 100 and the second casing 200. Through the arrangement of the flange and the groove, the first casing 100 and the second casing 200 can be quickly enclosed to form a cylinder by directly connecting the flange and the groove.
In this embodiment, the first casing 100 and the second casing 200 are detachably connected and mounted to form the cement slurry testing apparatus applied to the cement slurry testing method, so that the hardened column can be taken out from the cylinder after the subsequent cement slurry is hardened, and the testing efficiency of the slurry permeability can be improved.
The receiving chamber 300 formed in the cylinder has a side wall and a bottom wall. In order to avoid the influence of the air pressure on the penetration of the cement paste, the resulting penetration depth is inaccurate. The side wall and/or the bottom wall of the bottom of the accommodating cavity 300 can be provided with the air holes 400 in a penetrating manner, so that after the gaps of the sand layer 02 are filled with cement slurry, the original air in the gaps can be discharged out of the accommodating cavity 300 from the air holes 400, and the accuracy of the obtained penetration depth is improved.
Specifically, the first casing 100 includes a first body 110 and a first partition plate 120 connected to the first body 110, the second casing 200 includes a second body 110 and a second partition plate 220 connected to the second body 110, the first body 110, the second body 110, the first partition plate 120 and the second partition plate 220 enclose to form the accommodating cavity 300, the first partition plate 120 and the second partition plate 220 are connected to form the bottom wall of the accommodating cavity 300, and a plurality of air holes 400 are formed in the bottom wall in interval distribution. The first body 110 and the first partition 120 enclose the first open chamber, and the second body 110 and the second partition 220 enclose the second open chamber. When the first casing 100 and the second casing 200 are enclosed to form a cylinder, the first body 110 is connected with the second body 110 along the axial edge of the cylinder, the edge of the first partition plate 120 is connected with the edge of the second partition plate 220, the first body 110, the second body 110, the first partition plate 120 and the second partition plate 220 are enclosed to form the accommodating cavity 300, the first partition plate 120 and the second partition plate 220 are connected to form the bottom wall of the accommodating cavity 300, and a plurality of air holes 400 are distributed on the bottom wall in a pricing manner. The aperture of the air hole 400 can be set within a preset range, the sand in the sand layer 02 can be excessively lost when the aperture is larger than the preset range, the test is affected, and the discharging rate of the air in the sand layer 02 is affected when the aperture is smaller than the preset range, so that the penetration depth is inaccurate. Because the action of gravity, the extruded effort of cement thick liquids to the air in the gap of sand bed 02 is down, therefore, in this embodiment, locate the diapire that holds chamber 300 with bleeder vent 400, the air in the sand bed 02 of being convenient for discharges fast.
The first barrier 120 may be fixedly connected with the first body 110, and the second barrier 220 may be fixedly connected with the second body 110. In addition, since the first barrier 120 fixedly coupled to the first body 110 and the second barrier 220 fixedly coupled to the second body 110 need to be aligned when the cartridge is assembled, it is ensured that the test material in the receiving chamber 300 does not leak from a gap due to dislocation. Thus, the following arrangement may be adopted: the first partition plate 120 is connected with the first body 110 in an inserting and matching manner, the second partition plate 220 is connected with the second body 110 in an inserting and matching manner, and the first partition plate 120 and the second partition plate 220 are integrally formed. The integrally formed first partition plate 120 and the second partition plate 220 are provided with a plurality of ventilation holes 400 at intervals to form a ventilation plate. One end of the first body 110 may be provided with a first recess portion engaged with the air-permeable plate, and a second recess portion engaged with the air-permeable plate is provided at a position of the second body 110 corresponding to the first recess portion. When the barrel is assembled, the first body 110 and the second body 110 are detachably and fixedly connected after the air-permeable plate is respectively inserted into the first concave part and the second concave part. Through the mode, the steps of aligning the first partition plate 120 and the second partition plate 220 when the barrel is assembled by a tester can be reduced, the barrel can be rapidly assembled, and the assembled barrel can meet the requirement of performing the cement slurry permeability test by adopting the cement slurry testing method.
Further, the cement paste testing equipment further comprises a base 500, one end of the barrel, which is close to the bottom of the accommodating cavity 300, is installed above the base 500, an airflow channel is arranged in the base 500, the side wall of the base 500 is provided with air holes 510, and each air hole 400 and the air holes 510 are communicated with the airflow channel.
In order to ensure that the air exhausted from the accommodating cavity 300 can be circulated to the outside of the cylinder, the air is prevented from being detained in the cylinder to influence the testing effect. One end of the cylinder near the bottom of the accommodating chamber 300 is installed above the cylinder provided with an air flow passage, so that air discharged from the air holes 400 of the bottom wall of the accommodating chamber 300 can be discharged from the air holes 510 to the outside of the cylinder through the air flow passage. In addition, the base 500 may not be provided, when the first casing 100 and the second casing 200 are assembled to form a cylinder, the first partition plate 120 and the second partition plate 220 partition the inside of the cylinder into the accommodating chamber 300 and the exhaust chamber, and the side wall of the first casing 100 and/or the second casing 200 may be provided with a vent 510 communicating with the exhaust chamber, so as to allow air in the accommodating chamber 300 to flow to the outside of the cylinder.
Specifically, referring to fig. 5, the first housing 100 is provided with a first connecting portion 130, the second housing 200 is provided with a second connecting portion 230, the cement paste testing apparatus further includes a fastener 600, and the fastener 600 detachably and fixedly connects the first connecting portion 130 and the second connecting portion 230. The first connection portion 130 may be a first lug protruding from the outer wall of the first casing 100 and disposed near the edge of the first casing 100 in the axial direction of the cylinder, and the second connection portion 230 may be a second lug protruding from the outer wall of the second casing 200 and disposed near the edge of the second casing 200 in the axial direction of the cylinder. The first lug penetrates through a first fixing hole, the second lug penetrates through a second fixing hole which corresponds to the first fixing hole, and the first fixing hole is communicated with the second fixing hole to form an installation channel. Fastener 600 includes connecting portion and locking portion, connecting portion are including the first end portion, middle part and the second end portion that connect gradually, and in the installation passageway was worn to locate by the middle part, the surface of first lug was located to the first end portion arch, and the surface of second lug is located to the second end portion arch. The locking part comprises a first locking part and a second locking part, the first locking part is detachably and fixedly connected with the first end part (such as connected through threaded fit), and the second locking part is detachably and fixedly connected with the second end part (such as connected through threaded fit), so that the first lug and the second lug are locked and fixed. In addition, threaded holes may be further provided in the first lug and the second lug, and the first casing 100 and the second casing 200 are detachably and fixedly connected directly by screws. The first casing 100 and the second casing 200 are fixed in the above manner, so that the sealing performance of the accommodating cavity 300 can be ensured, and the accuracy of the test result can be ensured. The first lug may be spaced apart from the edge of the first casing 100, and the second lug may be spaced apart from the edge of the second casing 200, so as to improve the stability of the whole structure and the sealing performance of the receiving cavity 300.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A cement slurry testing apparatus for testing permeability of a cement slurry, said cement slurry testing apparatus comprising:
a first housing;
the second shell is detachably and fixedly connected with the first shell to form a cylinder, the first shell and the second shell are in butt joint along the axial direction of the cylinder, the inner wall of the first shell and the inner wall of the second shell enclose a containing cavity positioned in the cylinder, and the containing cavity is provided with an opening for injecting a test material;
the accommodating cavity is used for loading sand and cement slurry which are sequentially stacked, the cement slurry permeates in the sand and hardens to form a hardened column, and the measurement result of the hardened column is used for representing the permeability of the cement slurry;
the first shell comprises a first body and a first partition plate connected with the first body, the second shell comprises a second body and a second partition plate connected with the second body, the first body, the second body, the first partition plate and the second partition plate enclose to form the accommodating cavity, the first partition plate and the second partition plate are connected to form a bottom wall of the accommodating cavity, and a plurality of air holes are distributed in the bottom wall at intervals;
the cement slurry testing equipment further comprises a base, one end, close to the bottom of the containing cavity, of the barrel is installed above the base, an airflow channel is arranged in the base, air holes are formed in the side wall of the base, the air holes are communicated with the airflow channel, and the air holes are used for enabling the air discharged from the containing cavity to flow to the outside of the barrel.
2. The cementitious slurry testing device of claim 1, wherein the first spacer is in mating plug-fit connection with the first body and the second spacer is in mating plug-fit connection with the second body, the first spacer and the second spacer being integrally formed.
3. The cement paste testing apparatus as claimed in claim 1 or 2, wherein said first housing is provided with a first connecting portion, said second housing is provided with a second connecting portion, and said cement paste testing apparatus further comprises a fastener detachably and fixedly connecting said first connecting portion and said second connecting portion.
4. A cement paste testing method based on a cement paste testing apparatus, characterized in that, based on the cement paste testing apparatus according to any one of claims 1 to 3, the cement paste testing method comprises the steps of:
assembling and installing a first shell and a second shell into a cylinder;
adding sand materials with target particle sizes into the accommodating cavity of the cylinder body to form a sand layer;
pouring the cement slurry to be tested into the accommodating cavity, and paving the cement slurry above the sand layer;
after the cement slurry in the accommodating cavity is hardened, disassembling the cylinder body and taking out the hardened cylinder body;
measuring a penetration depth of the hardened cylinder in the sand layer.
5. The cement paste testing method of claim 4, wherein said step of pouring the cement paste to be tested into said holding cavity comprises:
measuring a preset volume of cement slurry to be measured;
and pouring the cement slurry to be detected with a preset volume into the accommodating cavity.
6. The cementitious slurry testing method of claim 5, wherein the step of measuring the penetration depth of the hardened cylinder in the sand layer comprises:
measuring the total volume of the hardened cylinder;
calculating a penetration volume of the hardened cylinder in the sand layer according to the total volume and the preset volume;
calculating the penetration depth from the penetration volume.
7. The cement paste testing method according to claim 4, wherein the step of adding sand material of a target grain size into the receiving cavity of the cylinder to form a sand layer comprises:
determining a target gap width or a particle size of a target structural unit;
determining the target particle size according to the target gap width or the particle size of the target structural unit;
screening out the standby sand material according to the target particle size;
and adding the screened sand material into the containing cavity of the cement slurry testing equipment to form the sand layer.
8. The cement paste testing method of claim 4, wherein said step of adding sand into said barrel receiving cavity to form a sand layer comprises:
adding the sand material into the accommodating cavity to a first preset height to form the sand layer;
the cement slurry to be tested is poured into the containing cavity, and the step of laying the cement slurry above the sand layer comprises the following steps:
and pouring the cement slurry to be detected into the accommodating cavity to a second preset height, and paving the cement slurry above the sand layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811042320.8A CN109187284B (en) | 2018-09-07 | 2018-09-07 | Cement slurry testing equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811042320.8A CN109187284B (en) | 2018-09-07 | 2018-09-07 | Cement slurry testing equipment and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109187284A CN109187284A (en) | 2019-01-11 |
| CN109187284B true CN109187284B (en) | 2021-11-26 |
Family
ID=64915214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811042320.8A Active CN109187284B (en) | 2018-09-07 | 2018-09-07 | Cement slurry testing equipment and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109187284B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184523B (en) * | 2022-02-14 | 2022-05-03 | 徐州钛白化工有限责任公司 | Method for detecting titanium dioxide dispersibility |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074912A (en) * | 2007-06-06 | 2007-11-21 | 河海大学 | Apparatus and method for testing cement concrete penetration performance under loading action |
| JP2009047681A (en) * | 2007-07-23 | 2009-03-05 | Nagoya Institute Of Technology | Dispersibility evaluating device for particle in slurry |
| CN101419152A (en) * | 2008-12-02 | 2009-04-29 | 河海大学 | Pervious template cloth permeability test method and device based on concrete slurry medium |
| CN103149143A (en) * | 2013-03-04 | 2013-06-12 | 黄河水利委员会黄河水利科学研究院 | Device and method for determining permeability coefficient of coarse-grained soil with super large grain size |
| CN203324072U (en) * | 2013-07-09 | 2013-12-04 | 深圳大学 | Cement sample molding mold for rebar corrosion test |
| CN103760084A (en) * | 2014-01-16 | 2014-04-30 | 常州工学院 | Anti-seepage slurry infiltration instrument of refuse landfill |
| CN204255813U (en) * | 2014-11-07 | 2015-04-08 | 山东大学 | Slip casting diffusion test device |
| CN105136641A (en) * | 2015-08-07 | 2015-12-09 | 山东大学 | Model device for simulating permeation grouting diffusion test under flowing water condition |
| CN206132576U (en) * | 2016-10-26 | 2017-04-26 | 西安科技大学 | Cloth oozes thick liquid testing arrangement |
| CN106885759A (en) * | 2017-03-28 | 2017-06-23 | 山东大学 | One kind visualization sand bed with saturated dynamic water osmotic grouting experimental rig and method |
| CN106908366A (en) * | 2017-03-02 | 2017-06-30 | 常州工学院 | A kind of vapour-pressure type household refuse landfill sites are percolated instrument and its application method |
| CN206696141U (en) * | 2017-03-20 | 2017-12-01 | 北京永利源混凝土有限公司 | Concrete impermeability test mould |
| CN108214836A (en) * | 2018-01-08 | 2018-06-29 | 华侨大学 | The die trial of cylinder concrete test block and cylinder concrete test block preparation method |
| CN207717587U (en) * | 2017-12-02 | 2018-08-10 | 四川省城市建设工程监理有限公司 | A kind of mortar permeameter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716852A (en) * | 1996-03-29 | 1998-02-10 | University Of Washington | Microfabricated diffusion-based chemical sensor |
| CN202256108U (en) * | 2011-08-09 | 2012-05-30 | 中国科学院水利部成都山地灾害与环境研究所 | Device for testing soil body permeation and sedimentation performance |
| CN103543087B (en) * | 2013-10-28 | 2016-03-23 | 中建材中岩科技有限公司 | Characterize test unit and the method for injecting paste material dilation angle in solid state medium |
| CN205404353U (en) * | 2016-02-19 | 2016-07-27 | 龙岩学院 | A water material performance test section of thick bamboo is blocked up in colliery |
| CN205665147U (en) * | 2016-06-06 | 2016-10-26 | 黄河科技学院 | Non -sand large aperture concrete permeation coefficient test device |
| CN108195723B (en) * | 2017-11-17 | 2020-05-12 | 昆明理工大学 | Permeation grouting test system and method for reinforcing loose gravel soil |
| CN107703031B (en) * | 2017-11-24 | 2019-06-21 | 中国矿业大学 | A kind of air pressure driving loose media grouting simulation test device and test method |
| CN108318400A (en) * | 2018-01-11 | 2018-07-24 | 四川大学 | Shape is divided to intersect fracture seepage experimental system and experimental method |
| CN108362624A (en) * | 2018-02-24 | 2018-08-03 | 中国石油化工股份有限公司 | A kind of containing consolidated sand permeability test device and its test method |
-
2018
- 2018-09-07 CN CN201811042320.8A patent/CN109187284B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074912A (en) * | 2007-06-06 | 2007-11-21 | 河海大学 | Apparatus and method for testing cement concrete penetration performance under loading action |
| JP2009047681A (en) * | 2007-07-23 | 2009-03-05 | Nagoya Institute Of Technology | Dispersibility evaluating device for particle in slurry |
| CN101419152A (en) * | 2008-12-02 | 2009-04-29 | 河海大学 | Pervious template cloth permeability test method and device based on concrete slurry medium |
| CN103149143A (en) * | 2013-03-04 | 2013-06-12 | 黄河水利委员会黄河水利科学研究院 | Device and method for determining permeability coefficient of coarse-grained soil with super large grain size |
| CN203324072U (en) * | 2013-07-09 | 2013-12-04 | 深圳大学 | Cement sample molding mold for rebar corrosion test |
| CN103760084A (en) * | 2014-01-16 | 2014-04-30 | 常州工学院 | Anti-seepage slurry infiltration instrument of refuse landfill |
| CN204255813U (en) * | 2014-11-07 | 2015-04-08 | 山东大学 | Slip casting diffusion test device |
| CN105136641A (en) * | 2015-08-07 | 2015-12-09 | 山东大学 | Model device for simulating permeation grouting diffusion test under flowing water condition |
| CN206132576U (en) * | 2016-10-26 | 2017-04-26 | 西安科技大学 | Cloth oozes thick liquid testing arrangement |
| CN106908366A (en) * | 2017-03-02 | 2017-06-30 | 常州工学院 | A kind of vapour-pressure type household refuse landfill sites are percolated instrument and its application method |
| CN206696141U (en) * | 2017-03-20 | 2017-12-01 | 北京永利源混凝土有限公司 | Concrete impermeability test mould |
| CN106885759A (en) * | 2017-03-28 | 2017-06-23 | 山东大学 | One kind visualization sand bed with saturated dynamic water osmotic grouting experimental rig and method |
| CN207717587U (en) * | 2017-12-02 | 2018-08-10 | 四川省城市建设工程监理有限公司 | A kind of mortar permeameter |
| CN108214836A (en) * | 2018-01-08 | 2018-06-29 | 华侨大学 | The die trial of cylinder concrete test block and cylinder concrete test block preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 胶凝态水泥浆渗透率测试装置研制及应用;李进 等;《石油矿场机械》;20200705(第4期);第50-54页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109187284A (en) | 2019-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110082275B (en) | Large-scale original grading coarse-grained soil vertical penetration deformation tester and test method | |
| JP5880981B2 (en) | Water absorption test method and apparatus for concrete surface | |
| CN109187284B (en) | Cement slurry testing equipment and method | |
| CN108844881B (en) | Method for predicting relative permeability coefficient of unsaturated soil based on VG model | |
| CN104535458B (en) | The measuring method of a kind of coarse aggregate bulk density and clearance rate | |
| CN110082274A (en) | It is large-scale simple with coarse-grained soil horizontal permeation testing apparatus for heat deformation and test method | |
| CN105203443A (en) | Penetration coefficient determination apparatus for permeable asphalt concrete track board test piece, and test method thereof | |
| KR101132249B1 (en) | Apparatus for curing concrete sample under the same conditions of actual construction concrete and concrete curing method using the same | |
| KR101467543B1 (en) | Pressurized bleeding tester | |
| CN112985948A (en) | Mounting method, dismounting method and using method of hollow cylindrical sample | |
| CN207779862U (en) | A kind of experimental rig obtaining coarse-grained soil infiltration coefficient | |
| CN114923833B (en) | High osmotic concrete osmotic coefficient's survey device | |
| KR101917207B1 (en) | Field Density Test Method | |
| CN210401151U (en) | Large-scale primary grading coarse-grained soil vertical permeation deformation tester | |
| KR101207341B1 (en) | Method for testing deterioration of sturcture and system for the same | |
| JP2016003909A (en) | Water absorption test device | |
| CN211978897U (en) | Portable soil erosion and water loss analogue means | |
| US20120292822A1 (en) | Mold for mortar grout prisms | |
| CN108088777B (en) | Material impermeability detection device and detection method thereof | |
| KR101513248B1 (en) | Air pressurized bleeding measurement device | |
| CN110715887B (en) | Method for measuring porosity of bituminous sand | |
| KR101966710B1 (en) | Solidification frame for measuring the compressive strength of solidified radioactive waste | |
| CN211042881U (en) | Device for testing influence of cement water separation on sand layer permeation grouting effect | |
| CN219224510U (en) | Device for detecting water seepage rate of concrete cracks | |
| CN110702485A (en) | Device and method for testing influence of cement water separation on sand layer permeation grouting effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190520 Address after: 528300 Guanglong Industrial Park, Chencun Town, Shunde District, Foshan City, Guangdong Province, No. 6, No. 14 Xingye Road, No. 3 (Residence Declaration) Applicant after: Guangdong Liancheng Housing Equipment Information Technology Co., Ltd. Address before: 315832 Room 118, No.1 Office Building, Meishan Salt Farm, Beilun District, Ningbo City, Zhejiang Province Applicant before: Ningbo Liancheng Housing Technology Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| CB02 | Change of applicant information |
Address after: 528000 3 / 6, Xingye 14 Road, Guanglong Industrial Park, Chencun Town, Shunde District, Foshan City, Guangdong Province Applicant after: Guangdong Ruizhu residential technology Co.,Ltd. Address before: 528300 Guanglong Industrial Park, Chencun Town, Shunde District, Foshan City, Guangdong Province, No. 6, No. 14 Xingye Road, No. 3 (Residence Declaration) Applicant before: GUANGDONG REMAC EQUIPMENT INFORMATION TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211228 Address after: 528300 No. 1, Peilong Road, longyongkou village, Ronggui street, Shunde District, Foshan City, Guangdong Province Patentee after: Guangdong Ruizhu residential technology Co.,Ltd. Patentee after: Guangdong Ruizhu Intelligent Technology Co., Ltd Address before: 528000 3 / 6, Xingye 14 Road, Guanglong Industrial Park, Chencun Town, Shunde District, Foshan City, Guangdong Province Patentee before: Guangdong Ruizhu residential technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |