CN111305283B - High-toughness fiber mortar sound measuring tube and preparation method thereof - Google Patents
High-toughness fiber mortar sound measuring tube and preparation method thereof Download PDFInfo
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- CN111305283B CN111305283B CN202010088311.3A CN202010088311A CN111305283B CN 111305283 B CN111305283 B CN 111305283B CN 202010088311 A CN202010088311 A CN 202010088311A CN 111305283 B CN111305283 B CN 111305283B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/56—Compositions suited for fabrication of pipes, e.g. by centrifugal casting, or for coating concrete pipes
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Abstract
The invention discloses a high-toughness fiber mortar sound detecting tube and a preparation method thereof. The two inner sleeves are respectively sleeved at two ends in the high-toughness fiber mortar pipe barrel, and the outer sleeve is sleeved at one end of the high-toughness fiber mortar pipe. The high-toughness fiber mortar pipe is made of high-toughness fiber mortar formed by mixing cement, fibers, quartz sand, industrial waste, a water reducing agent and an additive. The high-toughness fiber mortar pipe is used as the main body part of the acoustic pipe, so that the acoustic pipe has high toughness, high strength, high crack resistance, high tensile strength and high pressure resistance, completely meets the stress requirement of the acoustic pipe, and particularly improves the quality guarantee of pile foundation detection under the condition of severe geological conditions. In addition, the outer sleeve is installed in a factory, and then the portable intelligent electric hydraulic clamp is used for extruding on a construction site to complete the connection of the two high-toughness fiber mortar pipes, so that the connection quality of joints is ensured, and the probability of water leakage is reduced.
Description
Technical Field
The invention relates to the field of foundation pile detection in the field of construction engineering, in particular to a high-toughness fiber mortar sounding pipe.
Background
In the building foundation construction, the quality of the pile foundation is required to be detected by an ultrasonic transmission method according to the specification for detecting the pile foundation. The sounding pipe is a channel pre-buried in the cast-in-place pile and is used for enabling a probe of equipment to enter the pile body through the channel when ultrasonic detection is carried out.
At present, a thin-wall steel pipe acoustic pipe with the wall thickness of 1.8 mm and a thick-wall acoustic pipe with the wall thickness of 3.0mm are generally adopted in design, a construction unit frequently adopts a meter-based measuring mode for bidding, acoustic pipe suppliers usually adopt low reporting price and compete in a wall thickness reducing mode when bidding, if the wall thickness of 1.8 is adopted in design, the suppliers generally supply the wall thickness to the site, the wall thickness is only 1.0, 1.2 and 1.5 mm, the phenomenon of pipe blockage often occurs in a construction site, so that ultrasonic detection of a pile foundation cannot be completed, remedial measures need to be taken, a geological drilling machine is used for checking the integrity of the pile foundation, loss is caused, and the construction period is delayed.
In addition, the above two acoustic pipes have the following problems in different degrees:
1. the corrosion resistance is poor, and the transportation and the storage are not facilitated;
2. the thicknesses required by construction units are inconsistent, the construction units need to produce according to orders, the required processing period is long, and manufacturers cannot produce in a large scale;
3. the thick-wall acoustic pipe is heavy in weight, labor and time are wasted, the thick-wall steel pipe acoustic pipe is welded on site, the joint connection is greatly influenced by human factors, and the quality cannot be ensured;
4. the thin-wall sounding pipe and the thick-wall steel pipe sounding pipe are constructed according to design requirements, and the cost is high;
5. especially under the conditions of severe geological conditions and complex stress conditions, the crack resistance, tensile strength and compression resistance are poor, and the requirements of pile foundation detection cannot be met.
Considering that the acoustic pipe belongs to disposable service characteristics, as long as the acoustic pipe is pre-buried in the foundation pile concrete, the requirement can be met by meeting the stress requirement and preventing water leakage. Therefore, how to develop a sound tube with low cost and capable of solving the above problems must be broken through in terms of raw materials, structure and process.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem that exists among the prior art is overcome, provide a rational in infrastructure, the dead weight is light and have better mechanical properties, satisfy the acoustic pipe required acoustic pipe atress completely to satisfy the requirement of carrying out the pile foundation under the abominable geological conditions and detect.
The object of the invention is thus achieved.
The invention provides a high-toughness fiber mortar sound measuring tube, which comprises a high-toughness fiber mortar tube, two inner sleeves and an outer sleeve; the wall thickness of the high-toughness fiber mortar pipe is 2.5 mm-5 mm, and the wall thickness of the inner sleeve pipe is 0.8 mm-3 mm;
the outer sleeve is sleeved at one end of the high-toughness fiber mortar pipe, a binder is coated on the contact surface of the outer sleeve and the high-toughness fiber mortar pipe, the length of the outer sleeve is L1, and the length of the outer sleeve sleeved at one end of the high-toughness fiber mortar pipe is L1/2; the two inner sleeves are respectively inserted into the pipe barrels of the high-toughness fiber mortar pipe from two ends of the high-toughness fiber mortar pipe, the end faces, facing the outer side of the high-toughness fiber mortar pipe, of the inner sleeves are flush with the end faces of the high-toughness fiber mortar pipe, the end faces, facing the inner side of the high-toughness fiber mortar pipe, of the inner sleeves are provided with reducing diameters, and binding agents are coated on the contact surfaces of the inner sleeves and the high-toughness fiber mortar pipe.
Preferably, the adhesive is a hot melt adhesive.
Preferably, the inner sleeve and the outer sleeve are both high-frequency welded pipes.
Preferably, the length L1 of the outer sleeve is 10 cm-16 cm, and the length of the high-toughness fiber mortar pipe is 6 m-12 m.
Preferably, the length of the inner sleeve is L2, L2 is 7 cm-12 cm, and the length of the reduced diameter part is 2 cm.
Preferably, the high-toughness fiber mortar pipe is made of high-toughness fiber mortar mixed by ordinary portland cement, water, refined sand, fly ash, silicon powder, metakaolin, redispersible latex powder, fiber, hydroxypropyl methyl cellulose and a polycarboxylic acid water reducing agent, and the high-toughness fiber mortar pipe comprises the following components in sequence by weight:
20 to 35 percent, 13 to 20 percent, 20 to 35 percent, 15 to 25 percent, 0.5 to 1.5 percent, 1.5 to 3 percent, 1.5 to 7 percent, 0.03 to 0.15 percent and 0.1 to 0.35 percent, wherein the fiber is one or the combination of more than two of carbon fiber, polyvinyl alcohol fiber and basalt fiber.
Preferably, the high-toughness fiber mortar pipe is made of high-toughness fiber mortar mixed by ordinary portland cement, water, refined sand, fly ash, metakaolin, redispersible latex powder, fiber, hydroxypropyl methyl cellulose and a polycarboxylic acid water reducing agent, and the high-toughness fiber mortar pipe comprises the following components in sequence by weight: 20-35%, 13-20%, 20-35%, 15-25%, 1.5-3%, 1.5-7%, 0.03-0.15%, 0.1-0.35%, wherein the fiber is one or the combination of more than two of carbon fiber, polyvinyl alcohol fiber, and basalt fiber.
Further, the grain size of the refined sand is 0.01mm to 0.2 mm.
The invention also provides a preparation method of the high-toughness fiber mortar sound-measuring tube, which comprises the following steps:
selecting a seamless welded pipe or a high-frequency welded pipe with the length of 12m, the outer diameter of 55-80 mm and the wall thickness of 2.5-3.0 mm, dividing the seamless welded pipe or the high-frequency welded pipe into two semicircular section pipes through linear cutting, respectively serving as an upper die and a lower die of an outer die of the high-toughness fiber mortar pipe, welding a mortar inlet pipe at the mortar inlet end of the upper die, welding a mortar outlet pipe at the outlet end of the lower die, mounting valves on the mortar inlet pipe and the mortar outlet pipe, respectively fixing the upper die and the lower die on two flat plates, and mounting bolt connecting devices on the two flat plates;
before the outer mold is closed, an inner mold air inflation air bag is placed, and positioning ribs made of plastics are arranged on the air bag every 50-100 cm to ensure that the air bag is positioned in the center of the mold, so that the thickness of a high-toughness fiber mortar layer is uniform, and then the mold is closed through a bolt connecting device on two flat plates;
step 2, strictly weighing the required raw materials according to the proportion, mixing the raw materials to prepare a powdery body, adding water and stirring the powdery body into high-toughness fiber mortar;
step 4, removing the mold and cleaning;
step 5, coating adhesives on the outer wall surfaces of the two inner sleeves, and respectively inserting the adhesives into two ends of the high-toughness fiber mortar pipe;
and 6, firstly coating a binder on the inner wall of the outer sleeve, sleeving 1/2 length parts of the outer sleeve at one end of the high-toughness fiber mortar pipe with two ends inserted into the inner sleeve, and extruding by intelligent electric hydraulic pliers to enable the outer sleeve to be tightly combined on the high-toughness fiber mortar pipe, so that the high-toughness fiber mortar sounding pipe is obtained. .
Compared with the prior art, the invention has the beneficial effects that:
1. the high-toughness fiber mortar pipe is used as the acoustic pipe, so that the acoustic pipe has high toughness, high strength, high crack resistance, high tensile strength and high pressure resistance, and completely meets the stress requirement of the acoustic pipe.
According to experimental data, the compressive strength of the high-toughness fiber mortar standard test piece is 10-40% higher than that of common concrete, the tensile deformation capacity of the high-toughness fiber mortar is 100-600% of that of the common mortar, and the high-toughness fiber mortar standard test piece has high toughness, is not easy to crack and meets the stress requirement of an acoustic pipe.
In particular, the high-toughness fiber mortar has high toughness (crack resistance), high impermeability, high impact resistance and high tensile strength. The high toughness can prevent the expansion of original defects (microcracks) in a cement organism and effectively delay the generation of new cracks; the high impermeability can improve the compactness of the cement matrix through crack resistance and prevent external moisture from invading; high impact resistance means that the ability of the matrix to withstand shape can be significantly improved, thereby improving the toughness and impact resistance thereof; the high tensile strength can significantly improve the tensile strength of the matrix on the premise of using the high-strength modulus fiber.
2. The high-toughness fiber mortar pipe is connected with the inner sleeve pipe, the high-toughness fiber mortar pipe and the outer sleeve pipe through the binder, so that water leakage caused by holes and cracks at the joint is avoided, the connection quality of the sounding pipe is guaranteed, and the probability of water leakage is reduced.
3. The reliability of the connection of the two sounding pipes is enhanced by the inner sleeve. Specifically, the wall thickness of the high-toughness fiber mortar pipe is between 2.5 millimeters and 5 millimeters, the wall is thick, and the pressure is very high due to the fact that the intelligent electric hydraulic clamp is adopted for extruding the joint. In order to increase the pressure resistance and the resilience performance of the acoustic pipe, an inner sleeve is lined in the high-toughness fiber mortar pipe, firstly, the pressure of the electric hydraulic tongs is resisted, secondly, after the intelligent electric hydraulic tongs are pressed, tooth printing on the intelligent electric hydraulic tongs is pressed on an outer sleeve, and meanwhile, the inner sleeve is also provided with the same tooth printing, the two are deformed in the same way, and one part of the elastic steel is rebounded, so that the joint connection is firmer and tighter.
4. The outer sleeve is installed in a factory, the intelligent electric hydraulic tongs are adopted for extrusion, the portable intelligent electric hydraulic tongs are adopted for extrusion on the site, and the quality of joint connection is ensured.
5. The outer sleeve has one end connected when leaving the factory, which enhances the connection stability. Specifically, only the portable intelligent electric hydraulic clamp is needed to be adopted to connect the other end of the sound-detecting pipe at a construction site, so that the construction is convenient, one of two main reasons for water leakage of the sound-detecting pipe is solved, and the water leakage at the joint is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a high-toughness fiber mortar sounding pipe in an embodiment of the invention.
FIG. 2 is a schematic connection diagram of two high-toughness fiber mortar acoustic pipes in the embodiment of the invention.
The high-toughness mortar pipe comprises a high-toughness mortar pipe 1, an inner sleeve 2, an outer sleeve 3 and a binder 4.
Detailed Description
Fig. 1 is a schematic structural diagram of a high-toughness fiber mortar sound-measuring tube in an embodiment of the invention, and fig. 2 is a schematic connection diagram of two high-toughness fiber mortar sound-measuring tubes in an embodiment of the invention. As can be seen from fig. 1 and 2, the high-tenacity fiber mortar pipe 1, two inner sleeves 2 and one outer sleeve 3 are provided. The wall thickness of the high-toughness fiber mortar pipe 1 is 2.5 mm-5 mm, and the wall thickness of the inner sleeve 2 is 0.8 mm-3 mm.
The outer sleeve 3 is sleeved at one end of the high-toughness fiber mortar pipe 1, the adhesive 4 is coated on the contact surface of the outer sleeve 3 and the high-toughness fiber mortar pipe 1, the length of the outer sleeve 3 is L1, and the length of the outer sleeve 3 sleeved at one end of the high-toughness fiber mortar pipe 1 is L1/2. Two inner sleeves 2 are respectively inserted into the pipe barrels of the high-toughness fiber mortar pipe 1 from two ends of the high-toughness fiber mortar pipe 1, as shown in fig. 1, the end surface of one end of each inner sleeve 2 is flush with the end surface of the high-toughness fiber mortar pipe 1, the other end of each inner sleeve is reduced in diameter, and a binder is coated on the contact surface of each inner sleeve 2 and the corresponding high-toughness fiber mortar pipe 1.
Specifically, the outer diameter of the inner sleeve 2 is slightly smaller than the inner diameter of the high-toughness fiber mortar pipe 1, the inner diameter of the outer sleeve 3 is slightly larger than the outer diameter of the high-toughness fiber mortar pipe 1, and a reducing hole is formed in one end of the inner sleeve 2, so that the inner sleeve 2 can be conveniently inserted into the high-toughness fiber mortar sounding pipe 1, the high-toughness fiber mortar pipe 1 can be conveniently inserted into the outer sleeve 3, and the adhesion between the inner sleeve 2 and the high-toughness fiber mortar sounding pipe 1 and the adhesion between the high-toughness fiber mortar pipe 1 and the outer sleeve 3 can be ensured through the binder 4.
In the present embodiment, the adhesive 4 is a hot melt adhesive.
In the present embodiment, the inner sleeve 2 and the outer sleeve 3 are both high-frequency welded pipes.
In this embodiment, the length L1 of the outer sleeve is 10cm to 16cm, and the length of the high-tenacity fiber mortar pipe is 6m to 12 m.
In the present embodiment, the length of the inner tube 2 is L2, L2 is 7cm to 12cm, and the length of the reduced diameter portion is 2 cm.
The invention also provides a preparation method of the high-toughness fiber mortar sound-measuring tube, which comprises the following steps:
selecting a seamless welded pipe or a high-frequency welded pipe with the length of 12m, the outer diameter of 55-80 mm and the wall thickness of 2.5-3.0 mm, dividing the seamless welded pipe or the high-frequency welded pipe into two semicircular section pipes through linear cutting, respectively serving as an upper die and a lower die of an outer die of the high-toughness fiber mortar pipe 1, welding a mortar inlet pipe at a mortar inlet end of the upper die, welding a mortar outlet pipe at an outlet end of the lower die, installing valves on the mortar inlet pipe and the mortar outlet pipe, respectively fixing the upper die and the lower die on two flat plates, and installing bolt connecting devices on the two flat plates.
Before the outer mold is closed, the inner mold is placed into an air inflation air bag, positioning ribs made of plastics are arranged on the air bag every 50-100 cm to ensure that the air bag is positioned in the center of the mold, so that the thickness of the high-toughness fiber mortar layer is uniform, and then the mold is closed through a bolt connecting device on two flat plates.
And 2, strictly weighing the required raw materials according to the proportion, mixing the raw materials to prepare a powder, adding water and stirring the powder to prepare the high-toughness fiber mortar.
And 3, pushing the high-toughness fiber mortar from the mortar inlet pipe to the mortar outlet pipe at the other end by using a vacuum mortar pump, closing a mortar outlet pipe valve when the air is exhausted from the mortar outlet pipe and the mortar is completely discharged, stabilizing the pressure for 30 seconds, and closing the mortar inlet pipe valve to finish the prefabrication of the high-toughness fiber mortar pipe 1.
And 4, removing the mold and cleaning.
And 5, coating the adhesive 4 on the outer wall surfaces of the two inner sleeves 2, and respectively inserting the two inner sleeves into the two ends of the high-toughness fiber mortar pipe 1. In the present embodiment, the adhesive 4 is a hot melt adhesive. Specifically, the hot melt adhesive is heated and melted, then uniformly coated on the outer walls of the two inner sleeves 2, and then respectively inserted into two ends of the high-toughness fiber mortar pipe 1. Because the diameter of one end of the inner sleeve 2 is reduced, the smooth insertion is ensured.
And 6, firstly coating a binder 4 on the inner wall of the outer sleeve 3, then sleeving 1/2 length parts of the outer sleeve 3 at one end of the high-toughness fiber mortar pipe 1 with two ends inserted into the inner sleeve 2, extruding by intelligent electric hydraulic pliers to enable the outer sleeve 3 to be tightly combined on the high-toughness fiber mortar pipe 1, and at the moment, tightly connecting the outer sleeve 3, the high-toughness fiber mortar pipe 1 and the inner sleeve 2 into a whole to obtain the high-toughness fiber mortar acoustic pipe product.
Specifically, as in step 6, the hot melt adhesive is heated and melted and then uniformly coated on the inner wall of the outer sleeve 3, then the 1/2 length part of the outer sleeve 3 is sleeved on one end of the high-toughness fiber mortar pipe 1 with two ends inserted into the inner sleeve 2, and the extrusion is performed by intelligent electric hydraulic pliers, so that the outer sleeve 3 is tightly combined on the high-toughness fiber mortar pipe 1, and the preparation of the high-toughness fiber mortar acoustic pipe product is completed. In the extrusion process, the hot melt adhesive shrinks after being cooled, so that the connection between the high-toughness fiber mortar pipe 1 and the inner sleeve 2 and the outer sleeve 3 is tighter, and the reliability of the joint is improved.
During on-site construction, firstly, a binder 4 is coated on the inner wall of an outer sleeve 3 in one high-toughness fiber mortar sound measuring pipe product, then the outer sleeve 3 is sleeved at one end, without the outer sleeve 3, of a high-toughness fiber mortar pipe 1 of another high-toughness fiber mortar sound measuring pipe product, then a portable intelligent electric hydraulic clamp is used for extruding the outer sleeve 3 of the sleeved part, so that the outer sleeve 3 is tightly compounded on the other high-toughness fiber mortar pipe 1 due to extrusion deformation and the action of the binder 4, and the connection of the two high-toughness fiber mortar sound measuring pipes is completed. The construction is convenient, one of the main reasons of water leakage of the acoustic pipe is solved, namely, the acoustic pipe is protected by adopting various measures, and the joint is ensured to be watertight.
In the specific implementation process, the raw materials of the high-toughness fiber mortar are screened, and good effects are obtained. The data are detailed in the examples below.
Example 1: the high-toughness fiber mortar is prepared by mixing ordinary portland cement, water, refined sand, fly ash, silicon powder, metakaolin, redispersible latex powder, fiber, hydroxypropyl methyl cellulose and a polycarboxylic acid water reducing agent, and the weight percentages of the high-toughness fiber mortar are as follows according to the arrangement sequence of the raw materials: 20 to 35 percent, 13 to 20 percent, 20 to 35 percent, 15 to 25 percent, 0.5 to 1.5 percent, 1.5 to 3 percent, 1.5 to 7 percent, 0.03 to 0.15 percent and 0.1 to 0.35 percent, wherein the fiber is one or the combination of more than two of carbon fiber, polyvinyl alcohol fiber and basalt fiber.
Example 2: the high-toughness fiber mortar pipe is made of high-toughness fiber mortar formed by mixing ordinary portland cement, water, refined sand, fly ash, metakaolin, redispersible latex powder, fibers, hydroxypropyl methyl cellulose and a polycarboxylic acid water reducing agent, and the high-toughness fiber mortar pipe comprises the following raw materials in percentage by weight: : 20-35%, 13-20%, 20-35%, 15-25%, 1.5-3%, 1.5-7%, 0.03-0.15%, 0.1-0.35%, wherein the fiber is one or the combination of more than two of carbon fiber, polyvinyl alcohol fiber, and basalt fiber.
In the above two examples, the grain size of the refined sand was 0.01mm to 0.2 mm. Specifically, the materials are screened and taken according to natural gradation between 0.01mm and 0.2 mm.
Claims (7)
1. The high-toughness fiber mortar sounding pipe is characterized by comprising a high-toughness fiber mortar pipe, two inner sleeves and an outer sleeve; the wall thickness of the high-toughness fiber mortar pipe is 2.5 mm-5 mm, and the wall thickness of the inner sleeve pipe is 0.8 mm-3 mm;
the outer sleeve is sleeved at one end of the high-toughness fiber mortar pipe, a binder is coated on the contact surface of the outer sleeve and the high-toughness fiber mortar pipe, the length of the outer sleeve is L1, and the length of the outer sleeve sleeved at one end of the high-toughness fiber mortar pipe is L1/2; the two inner sleeves are respectively inserted into the pipe barrels of the high-toughness fiber mortar pipe from two ends of the high-toughness fiber mortar pipe, the end surfaces of the inner sleeves facing the outer side of the high-toughness fiber mortar pipe are flush with the end surfaces of the high-toughness fiber mortar pipe, the end surfaces of the inner sleeves facing the inner side of the high-toughness fiber mortar pipe are provided with reducing diameters, and a binder is coated on the contact surfaces of the inner sleeves and the high-toughness fiber mortar pipe;
the high-toughness fiber mortar pipe is made of the following two materials:
the high-toughness fiber mortar pipe is made of high-toughness fiber mortar formed by mixing ordinary portland cement, water, refined sand, fly ash, silicon powder, metakaolin, redispersible latex powder, fiber, hydroxypropyl methyl cellulose and a polycarboxylic acid water reducing agent, and the high-toughness fiber mortar pipe comprises the following components in sequence by weight: 20-35%, 13-20%, 20-35%, 15-25%, 0.5-1.5%, 1.5-3%, 1.5-7%, 0.03-0.15%, 0.1-0.35%, wherein the fiber is one or the combination of more than two of carbon fiber, polyvinyl alcohol fiber, and basalt fiber;
or the high-toughness fiber mortar pipe is made of high-toughness fiber mortar formed by mixing ordinary portland cement, water, refined sand, fly ash, metakaolin, redispersible latex powder, fiber, hydroxypropyl methyl cellulose and a polycarboxylic acid water reducing agent, and the high-toughness fiber mortar pipe comprises the following components in sequence by weight: 20-35%, 13-20%, 20-35%, 15-25%, 1.5-3%, 1.5-7%, 0.03-0.15%, 0.1-0.35%, wherein the fiber is one or the combination of more than two of carbon fiber, polyvinyl alcohol fiber, and basalt fiber.
2. The high tenacity fiber mortar sound tube of claim 1, wherein said binder is a hot melt adhesive.
3. The high tenacity fiber mortar acoustic pipe of claim 1, wherein both the inner sleeve and the outer sleeve are high frequency welded pipes.
4. The high-toughness fiber mortar sound detecting tube according to claim 1, wherein the length L1 of the outer sleeve is 10-16 cm, and the length of the high-toughness fiber mortar tube is 6-12 m.
5. The high-toughness fiber mortar sound-measuring tube according to claim 1, wherein the length of the inner sleeve is L2, L2 is 7 cm-12 cm, and the length of the reduced diameter part is 2 cm.
6. The high-toughness fiber mortar sound-measuring tube according to claim 1, wherein the grain size of the refined sand is 0.01-0.2 mm.
7. The preparation method of the high-toughness fiber mortar sound pipe according to claim 1, wherein the method comprises the following steps:
step 1, manufacturing a high-toughness fiber mortar pipe mold;
selecting a seamless welded pipe or a high-frequency welded pipe with the length of 12m, the outer diameter of 55-80 mm and the wall thickness of 2.5-3.0 mm, dividing the seamless welded pipe or the high-frequency welded pipe into two semicircular section pipes through linear cutting, respectively serving as an upper die and a lower die of an outer die of the high-toughness fiber mortar pipe, welding a mortar inlet pipe at the mortar inlet end of the upper die, welding a mortar outlet pipe at the outlet end of the lower die, mounting valves on the mortar inlet pipe and the mortar outlet pipe, respectively fixing the upper die and the lower die on two flat plates, and mounting bolt connecting devices on the two flat plates;
before the outer mold is closed, an inner mold air inflation air bag is placed, and positioning ribs made of plastics are arranged on the air bag every 50-100 cm to ensure that the air bag is positioned in the center of the mold, so that the thickness of a high-toughness fiber mortar layer is uniform, and then the mold is closed through a bolt connecting device on two flat plates;
step 2, strictly weighing the required raw materials according to the proportion, mixing the raw materials to prepare a powdery body, adding water and stirring the powdery body into high-toughness fiber mortar;
step 3, pushing the high-toughness fiber mortar from the mortar inlet pipe to the mortar outlet pipe at the other end by using a vacuum mortar pump, closing a mortar outlet pipe valve when the mortar outlet pipe exhausts air and the mortar is discharged, stabilizing the pressure for 30 seconds, and then closing the mortar inlet pipe valve to finish the prefabrication of the high-toughness fiber mortar pipe;
step 4, removing the mold and cleaning;
step 5, coating adhesives on the outer wall surfaces of the two inner sleeves, and respectively inserting the adhesives into two ends of the high-toughness fiber mortar pipe;
and 6, firstly coating a binder on the inner wall of the outer sleeve, sleeving 1/2 length parts of the outer sleeve at one end of the high-toughness fiber mortar pipe with two ends inserted into the inner sleeve, and extruding by intelligent electric hydraulic pliers to enable the outer sleeve to be tightly combined on the high-toughness fiber mortar pipe, so that the high-toughness fiber mortar sounding pipe is obtained.
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