CN107255707A - A kind of short-cut method for detecting concrete early stage cubic deformation - Google Patents
A kind of short-cut method for detecting concrete early stage cubic deformation Download PDFInfo
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- CN107255707A CN107255707A CN201710123818.6A CN201710123818A CN107255707A CN 107255707 A CN107255707 A CN 107255707A CN 201710123818 A CN201710123818 A CN 201710123818A CN 107255707 A CN107255707 A CN 107255707A
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- cubic deformation
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 28
- 238000007599 discharging Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 230000008602 contraction Effects 0.000 claims description 8
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (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)
Abstract
The present invention relates to concrete NDT technical field, more particularly to a kind of short-cut method for detecting concrete early stage cubic deformation.This method is with low cost, the method for detecting concrete early stage cubic deformation easy to detect, can accurately measure the early stage cubic deformation of concrete.Structure of the detecting device of the present invention is simple simultaneously, and easy to operate, testing result is reliable and stable, can accurately measure the early stage cubic deformation of concrete, be adapted to promote the use of.
Description
Technical field
The present invention relates to concrete NDT technical field, more particularly to a kind of letter for detecting concrete early stage cubic deformation
Just method.
Background technology
Volume stability is to influence an important performance of concrete durability.The good concrete of durability splits first
Line controls good concrete.Otherwise, even if every durability index of concrete is good, once crackle is produced, concrete
Durability is not known where to begin yet.
Contraction is the basic characteristic of concrete, and the contraction of concrete is divided into plastic shrinkage, received certainly by data of literatures
Contracting, temperature difference contraction, dry contraction, chemical shrinkage, Carbonization contract etc. are a variety of.The characteristic of various raw material and the cooperation of concrete
Than considerable influence can be produced to shrinking.
《Standard for test methods of longterm performance and durability of ordinary concrete standard》Provided in (GB/T 50081-2002)
The method that contact method and eyes with non-contact method detect concrete shrinkage, but to be that concrete is hardened produce one to the starting point of test
Determine after intensity, the cubic deformation before being extremely stripped after concrete initial set is not measured.But the volume of concrete of this time becomes
Control of the shape to concrete incipient crack is particularly important.Existing device manufacturer develops infrared detecting device, can be by self-constriction
Test zero point be advanced to structure formation the time（I.e. concrete initial set when）.Using infrared detection concrete early stage cubic deformation
Method is expensive, often detects once, costly.
A kind of short-cut method for detecting concrete early stage cubic deformation of the present invention, this method is our company technology people
Member develops the side of detection concrete early stage cubic deformation a kind of with low cost, easy to detect by substantial amounts of experimental study
Method, can accurately measure the early stage cubic deformation of concrete.Structure of the detecting device of the present invention is simple simultaneously, operation side
Just, testing result is reliable and stable, can accurately measure the early stage cubic deformation of concrete, be adapted to promote the use of.
The content of the invention
In order to overcome defect present in background technology, the technical solution adopted for the present invention to solve the technical problems is：
A kind of short-cut method for detecting concrete early stage cubic deformation, its step is：
A, the wide-mouth bottle for taking one 1000 milliliters, bottleneck use the rubber stopper with measuring pipette to seal, and are provided with simultaneously in rubber stopper
One discharging tube, correspondence discharging tube is provided with discharge opeing pipe plug, wide-mouth bottle is assembled rear standby；
B, the concrete for receiving detection will be prepared with the screening of 5 square millimeters of square hole screen, the mortar sifted out is slowly added into wide-mouth
In bottle, the addition of mortar is 600-800 milliliters, then wide-mouth bottle is placed on level table so that mortar is on table top
Stand；
C, when mortar stood on table top to mortar upper surface it is smooth after atoleine, the liquid stone are injected into wide-mouth bottle
The height of wax is more than the height of rubber stopper, by discharging tube discharging tube plug seal after filling, is prepared into experimental rig；
D, the experimental rig for preparing step c are moved into 20 DEG C of thermostatic curing case, while being put into same volume in curing box
The mortar in step b is accumulated, as a comparison mortar, the setting time for detecting concrete；
E, when contrast mortar it is pre-hardening after, record the test zero point of cubic deformation, over time, as needed, record is not
With the amount of contraction of time, by simply calculating, you can the cubic deformation ratio of corresponding time mortar is drawn, so as to detect coagulation
Native early stage cubic deformation..
The present invention devises a kind of short-cut method for detecting concrete early stage cubic deformation, and this method is our company technology people
Member develops the side of detection concrete early stage cubic deformation a kind of with low cost, easy to detect by substantial amounts of experimental study
Method, can accurately measure the early stage cubic deformation of concrete.Structure of the detecting device of the present invention is simple simultaneously, operation side
Just, testing result is reliable and stable, can accurately measure the early stage cubic deformation of concrete, be adapted to promote the use of.
Brief description of the drawings
Fig. 1 is a kind of structural representation for detecting concrete early stage cubic deformation device of the present invention；
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.Accompanying drawing is simplified schematic diagram, only with signal side
Formula illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
Specific embodiment, being prepared into concrete C40, C40 specific proportioning according to following proportioning is：
The C40 commerical ready-mixed concrete match ratios of table 1（kg/m3）
| Raw material | Cement | Miberal powder | Flyash | Sand | Rubble | Water reducer | Water |
| Quality（Kg） | 260 | 80 | 60 | 710 | 1050 | 6.0 | 170 |
The raw material that above-mentioned C40 concrete is used for,
(1) cement：Join PO42.5 cement in Xuzhou, 28d strengths of cement are 49.7MPa；
(2) miberal powder：The Xuzhou prosperous S95 of gold, water requirement 98%, specific surface area 409m2/Kg, 28d activity index 101%；
(3) flyash：II grade of China of state, 45 μm of square hole screens tail over 11%, loss on ignition 1.7%, water demand ratio 98%；
(4) silicon ash：Angstrom willing silicon ash, the m2/kg of specific surface area 25000, activity index 102%；
(5) fine aggregate 4：Nature medium sand, modulus of fineness 2.6, clay content 0.4%；
(6) coarse aggregate, 5-25mm rubbles, clay content 0.5%；
(7) polycarboxylate water-reducer, Su Bote SBT-1, water-reducing rate 25%.
(8) naphthalene water reducer, praises source JW-1, water-reducing rate 19%.
(9) aliphatic water reducing agent, praises source JW-2, water-reducing rate 18%.
(10) swelling agent, Su Bote JM- III.
A kind of short-cut method for detecting concrete early stage cubic deformation, it is characterised in that its step is：
A, the wide-mouth bottle 1 for taking one 1000 milliliters, bottleneck use the rubber stopper 3 with measuring pipette 2 to seal, in rubber stopper 3 simultaneously
Provided with a discharging tube 4, correspondence discharging tube 4 is provided with discharge opeing pipe plug 5, wide-mouth bottle 1 is assembled rear standby；
B, concrete C40 C40 5 square millimeters of the square hole screen screenings that receive detection will be prepared, the mortar 6 sifted out is slowly
Add in wide-mouth bottle 1, the addition of mortar is 700 milliliters, then wide-mouth bottle 1 is placed on level table so that mortar exists
Stood on table top；
C, when mortar stood on table top to mortar upper surface it is smooth after into wide-mouth bottle inject atoleine 7, the liquid
The height of paraffin 7 is more than the height of rubber stopper 3, and discharging tube 4 is sealed with discharge opeing pipe plug 5 after filling, experimental rig is prepared into；
D, the experimental rig for preparing step c are moved into 20 DEG C of thermostatic curing case, while being put into same volume in curing box
The mortar in step b is accumulated, as a comparison mortar, the setting time for detecting concrete；
E, when contrast mortar it is pre-hardening after, record the test zero point of cubic deformation, over time, as needed, record 1 day
With the amount of contraction of 7 days, by simply calculating, you can the cubic deformation ratio of corresponding time mortar is drawn, so as to detect coagulation
Native early stage cubic deformation.
The simple testing result of the C40 concrete prepared using said ratio and infrared detections contrast are as shown in table 2：
Influence of the water reducer species of table 2 to volume stability of concrete（10-4）
The result and the knot of infrared test of the short-cut method of the detection concrete early stage cubic deformation it can be seen from test result
Fruit is more or less the same, and the sample of simple device test is mortar, and without the interference of coarse aggregate, the amount of contraction of sample can be bigger by one
A bit.This method be our company technical staff by substantial amounts of experimental study, develop a kind of detection with low cost, easy to detect
The method of concrete early stage cubic deformation, can accurately measure the early stage cubic deformation of concrete.Inspection of the present invention simultaneously
Survey apparatus structure simple, easy to operate, testing result is reliable and stable, can accurately measure the early stage cubic deformation of concrete, fit
Conjunction is promoted the use of.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (1)
1. a kind of short-cut method for detecting concrete early stage cubic deformation, it is characterised in that its step is：
A, the wide-mouth bottle for taking one 1000 milliliters（1）, bottleneck, which is used, carries measuring pipette（2）Rubber stopper（3）Sealing, rubber stopper
（3）In simultaneously provided with discharging tube（4）, correspondence discharging tube（4）Provided with discharge opeing pipe plug（5）, by wide-mouth bottle（1）After assembling
It is standby；
B, the concrete for receiving detection will be prepared with the screening of 5 square millimeters of square hole screen, the mortar sifted out（6）It is slowly added into wide
Mouth bottle（1）In, the addition of mortar is 600-800 milliliters, then by wide-mouth bottle（1）It is placed on level table so that mortar
Stood on table top；
C, when mortar stood on table top to mortar upper surface it is smooth after atoleine is injected into wide-mouth bottle（7）, the liquid
Body paraffin（7）Height be more than rubber stopper（3）Height, by discharging tube after filling（4）Use discharge opeing pipe plug（5）Sealing, is prepared
Into experimental rig；
D, the experimental rig for preparing step c are moved into 20 DEG C of thermostatic curing case, while being put into same volume in curing box
The mortar in step b is accumulated, as a comparison mortar, the setting time for detecting concrete；
E, when contrast mortar it is pre-hardening after, record the test zero point of cubic deformation, over time, as needed, record is not
With the amount of contraction of time, by simply calculating, you can the cubic deformation ratio of corresponding time mortar is drawn, so as to detect coagulation
Native early stage cubic deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123818.6A CN107255707A (en) | 2017-03-03 | 2017-03-03 | A kind of short-cut method for detecting concrete early stage cubic deformation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123818.6A CN107255707A (en) | 2017-03-03 | 2017-03-03 | A kind of short-cut method for detecting concrete early stage cubic deformation |
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| Publication Number | Publication Date |
|---|---|
| CN107255707A true CN107255707A (en) | 2017-10-17 |
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ID=60027171
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| CN201710123818.6A Pending CN107255707A (en) | 2017-03-03 | 2017-03-03 | A kind of short-cut method for detecting concrete early stage cubic deformation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212171A (en) * | 2018-11-19 | 2019-01-15 | 太原理工大学 | Architectural engineering concrete self-shrinkage rate measuring device and method |
| CN110161218A (en) * | 2019-04-30 | 2019-08-23 | 东南大学 | Method that is a kind of while measuring cement slurry chemical shrinkage amount Yu apparent volume variable quantity |
Citations (9)
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|---|---|---|---|---|
| DE3237090A1 (en) * | 1982-10-07 | 1984-04-12 | Dyckerhoff & Widmann AG, 8000 München | Method of testing unset concrete and device for carrying out the method |
| CN2570786Y (en) * | 2002-09-02 | 2003-09-03 | 鲍光玉 | Apparatus for determining concrete contraction percentage |
| WO2005065411A3 (en) * | 2003-12-31 | 2005-12-15 | Saudi Arabian Oil Co | Test apparatus for direct measurement of expansion and shrinkage of oil well cements |
| CN101059499A (en) * | 2007-04-26 | 2007-10-24 | 同济大学 | Cement self-shrinking value test method |
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| CN102226803A (en) * | 2011-04-06 | 2011-10-26 | 同济大学 | Detection method of early autogenous shrinkage of cement mortar |
| CN104764873A (en) * | 2015-03-11 | 2015-07-08 | 同济大学 | Analysis and evaluation method of shrinkage resistance performance of concrete |
| CN204989179U (en) * | 2015-08-07 | 2016-01-20 | 中建商品混凝土（福建）有限公司 | Early volume self -constriction testing arrangement of mortar |
| CN103675242B (en) * | 2012-08-30 | 2016-05-18 | 贵州中建建筑科研设计院有限公司 | Measuring method and the device of a kind of concrete or mortar volume distortion |
-
2017
- 2017-03-03 CN CN201710123818.6A patent/CN107255707A/en active Pending
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|---|---|---|---|---|
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| CN2570786Y (en) * | 2002-09-02 | 2003-09-03 | 鲍光玉 | Apparatus for determining concrete contraction percentage |
| WO2005065411A3 (en) * | 2003-12-31 | 2005-12-15 | Saudi Arabian Oil Co | Test apparatus for direct measurement of expansion and shrinkage of oil well cements |
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| CN201191211Y (en) * | 2008-03-25 | 2009-02-04 | 施晓红 | Oil gas well cementing cement past volume changing amount measurement apparatus |
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| CN103675242B (en) * | 2012-08-30 | 2016-05-18 | 贵州中建建筑科研设计院有限公司 | Measuring method and the device of a kind of concrete or mortar volume distortion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212171A (en) * | 2018-11-19 | 2019-01-15 | 太原理工大学 | Architectural engineering concrete self-shrinkage rate measuring device and method |
| CN110161218A (en) * | 2019-04-30 | 2019-08-23 | 东南大学 | Method that is a kind of while measuring cement slurry chemical shrinkage amount Yu apparent volume variable quantity |
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Application publication date: 20171017 |