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Waterproof concrete pipe and preparation method thereof

A waterproof concrete and pipe technology, applied in the field of concrete pipes, can solve the problems of complicated waterproof measures and poor waterproof effect, and achieve the effects of good waterproof and anti-corrosion effect, reduced risk of cracking, and excellent water resistance

Inactive Publication Date: 2021-10-12
佛山市志必合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a waterproof concrete pipe and its preparation method, aiming to solve the technical problems of poor waterproof effect and complicated waterproof measures of concrete pipes in the prior art

Method used

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  • Waterproof concrete pipe and preparation method thereof
  • Waterproof concrete pipe and preparation method thereof
  • Waterproof concrete pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method of preparing a waterproof concrete pipe provided in this example, comprising the steps of:

[0037] 1) Weighing, stirring: the raw material is weighing according to the material ratio of the waterproof concrete pipe of Table 1, wherein the octylsilane waterproof agent is a normal octyltriboxyzoxysilane emulsion. The concentration of the n-octyltriethoxysilane emulsion was 40%. The solid raw material was placed in a stirrer, stirred for 0.5 minutes, and then the liquid raw material was added, and stirring was continued for 1 minute to give a mixture.

[0038] 2) Carter formation: Put the mixture into the mold, add steel bib, and the core molding, and the waterproof concrete pipe is made.

[0039] 3) Steam, demultiplexing: At normal pressure, the crude product is placed in the steam pool, and after 3 hours at a temperature of 22 ° C, the temperature rise rate is warmed at 20 ° C / h. 60 ° C, at which the temperature was 4 hours under this temperature; then the waterp...

Embodiment 2

[0042] A method of preparing a waterproof concrete pipe provided in this example, comprising the steps of:

[0043] 1) Weighing, stirring: the raw material is weighing according to the material ratio of the waterproof concrete pipe of Table 1, wherein the octylsilane waterproof agent is a normal octyltriboxyzoxysilane emulsion. The concentration of the n-octyltriethoxysilanous emulsion was 60%. After placing the solid raw material into the mixer, stirred for 1 minute, then the liquid raw material was added, and stirring was continued for 2 minutes to give a mixture.

[0044] 2) Carter formation: Put the mixture into the mold, add steel bib, and the core molding, and the waterproof concrete pipe is made.

[0045] 3) Steam, demultiplexing: The hydrophilic concrete pipe is placed in the steam pool under normal pressure, and after 2 hours at a temperature of 25 ° C, the temperature rise rate is heated at 25 ° C / h. 90 ° C, at this temperature conditions for 3 hours; then cool down to...

Embodiment 3

[0048] A method of preparing a waterproof concrete pipe provided in this example, comprising the steps of:

[0049] 1) Weighing, stirring: the raw material is weighing according to the material ratio of the waterproof concrete pipe of Table 1, wherein the octylsilane waterproof agent is a normal octyltriboxyzoxysilane emulsion. The concentration of the n-octyltriethoxysilanous silicone emulsion was 50%. The solid raw material was placed in a mixer, stirred for 1 minute, then adding liquid raw materials, continued for 4 minutes to give a mixture.

[0050] 2) Carter formation: Put the mixture into the mold, add steel bib, and the core molding, and the waterproof concrete pipe is made.

[0051] 3) Steam, demultiplexing: The crude material of the waterproof concrete pipe is placed in the steam pool under normal pressure, and after 2 hours at a temperature of 25 ° C, the temperature rise rate at 23 ° C / hr. 70 ° C, at which the temperature was 3 hours; then the waterproof concrete pip...

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Abstract

The invention belongs to the technical field of concrete pipes, and relates to a waterproof concrete pipe and a preparation method thereof. The waterproof concrete pipe comprises, by weight, 2400-2500 parts of the following raw materials: 100-500 parts of cement; 500-800 parts by weight of sand; 10-150 parts by weight of fly ash; 10-150 parts by weight of mineral powder; 900 to 1400 parts by weight of broken stone; 0.5-6 parts by weight of an octyl silane waterproof agent, wherein the octyl silane waterproof agent is an oil-in-water emulsion; 1-6 parts by weight of a shrinkage reducing agent; 1-8 parts by weight of a water reducing agent; and 120-180 parts by weight of water. According to the waterproof concrete pipe and the preparation method thereof of the present invention, the siloxane group on the octyl silane waterproof agent is hydrolyzed so as to perform a condensation reaction with the silicon hydroxyl group on the cement hydration product C-S-H gel so as to be chemically anchored on capillary pore walls, and the hydrophobic group on the octyl silane waterproof agent faces capillary pores, such that the hydrophobic structure provides the excellent waterproofness for the waterproof concrete pipe. The preparation method of the waterproof concrete pipe comprises the following steps of: 1) weighing and stirring; (2) vibration core forming; and 3) steam curing and form removal.

Description

Technical field [0001] The present invention belongs to the technical field of concrete pipes, and more particularly to waterproof concrete pipes and preparation methods thereof. Background technique [0002] With the acceleration of urbanization, the demand for various underground pipes is increasing, with respect to metal pipes and plastic pipes, low cost, high compressive strength, and increased demand for concrete pipes. [0003] There may be erosion media inside and outside the underground pipeline. The erosion medium will corrode the tube, resulting in a decrease in strength, and cannot meet the requirements of the design period. The existing concrete pipe usually does not have a waterproof function, so existing concrete pipes need to additional waterproof and anti-corrosion measures such as liner lining. [0004] The application number is a prestressed steel cylinder concrete pipe for self-contained anti-corrosion resistance. The prestressed steel cylindrical coil concrete...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/27C04B2201/50C04B2201/52C04B14/06C04B14/02C04B18/08C04B18/12C04B24/42C04B2103/0068C04B2103/302
Inventor 柴堂蒋凌飞黄东
Owner 佛山市志必合材料有限公司
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