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Internally-doped capillary crystalline waterproof material and preparation method thereof

A technology of osmotic crystalline waterproofing and water reducing agent, which is applied in the field of cement concrete waterproofing materials, which can solve the problems of high cost and short service life, and achieve the effects of low cost, reduced cost and improved overall impermeability

Inactive Publication Date: 2016-07-06
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of intermixed osmotic crystalline waterproof material and its preparation method, which solves the problems of external coating, high cost, short service life, and loss of function once the surface is damaged, especially to improve the existing common osmotic crystalline waterproof material. Waterproof, anti-seepage performance, improved durability and other aspects have significant advantages, to meet the waterproof and anti-seepage requirements of bridges, roads, tunnels, underground and other cement concrete structures

Method used

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  • Internally-doped capillary crystalline waterproof material and preparation method thereof
  • Internally-doped capillary crystalline waterproof material and preparation method thereof
  • Internally-doped capillary crystalline waterproof material and preparation method thereof

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Embodiment 1

[0033] In parts by weight, fully mix 1 part of tetrasodium aminotrimethylene phosphonate with 1 part of polycarboxylate water reducer powder, then add 5 parts of magnesium hydroxide and 10 parts of calcium hydroxide to the above-mentioned In the mixture, and stir evenly, finally add 35 parts of fly ash, 10 parts of ferrous sulfate heptahydrate, 3 parts of potassium sulfate, 20 parts of nano-calcium carbonate (particle size 50nm), and 15 parts of calcium silicate , and mix uniformly to obtain the osmotic intermixing type osmotic crystalline waterproof material of the present invention.

[0034] The technical indicators of this embodiment are as follows: 8% internal mixing, the 28-day compressive strength ratio of cement concrete is 108%, the 28-day anti-seepage pressure ratio is 285%, and the 56-day secondary anti-seepage pressure ratio is 235%.

Embodiment 2

[0036] In parts by weight, fully mix 5 parts of sodium hexametaphosphate and 1.5 parts of polyvinyl alcohol (rheological agent), then add 15 parts of calcium hydroxide to the above mixture, and stir evenly, and finally mix 35.5 15 parts of ground slag powder, 6 parts of sodium thiosulfate pentahydrate, 22 parts of superfine silica fume (50 μm in particle size), and 15 parts of sodium silicate were added in sequence and mixed evenly to obtain the permeable internal mixing type of the present invention. Penetrates crystalline waterproof material.

[0037] The technical indicators of this embodiment are as follows: 10% internal mixing, the 28-day compressive strength ratio of cement concrete is 122%, the 28-day anti-seepage pressure ratio is 298%, and the 56-day secondary anti-seepage pressure ratio is 223%.

Embodiment 3

[0039] In parts by weight, 2 parts of sodium diethylenetriamine pentamethylene phosphonate, 1 part of tartaric acid, 0.5 parts of water repellent, 1.5 parts of polycarboxylate superplasticizer powder are fully mixed, and then 2 parts of Add 35 parts of fly ash, 5 parts of metakaolin, 8 parts of potassium aluminum sulfate dodecahydrate, 15 parts of nano-silica powder and 18 parts of sodium silicate are added in sequence and mixed uniformly to obtain the osmotic internal doping type osmotic crystalline waterproof material of the present invention.

[0040] The technical indicators of this embodiment are as follows: 6% is added internally, the 28-day compressive strength ratio of cement concrete is 102%, the 28-day impermeability pressure ratio is 256%, and the 56-day secondary impermeability pressure ratio is 203%.

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Abstract

The invention relates to the field of cement concrete waterproof materials, in particular to a built-in osmotic crystal waterproof material and a preparation method thereof. The composition and mass parts of each component of the intermixed osmotic crystalline waterproof material are: 10-30 parts of nanometer component; 0.5-10 parts of complexing agent; 5-20 parts of silicate; 20-50 parts of active component A; 5-20 parts of active component B; 10-30 parts of calcium hydroxide / magnesium hydroxide / barium hydroxide; 0.5-5 parts of auxiliary components. First, mix the complexing agent and auxiliary components thoroughly; add calcium hydroxide / magnesium hydroxide / barium hydroxide to the above mixture, and stir well, then add active component A, active component B, silicate in sequence Components, nanomaterial components, and evenly mixed, weighed, packaged. The built-in permeable crystalline waterproof material of the invention can significantly improve the anti-permeability of the cement concrete structure, and can also improve the volume stability of the cement concrete structure and the like.

Description

technical field [0001] The invention relates to the field of cement concrete waterproof materials, in particular to a built-in osmotic crystal waterproof material and a preparation method thereof. Background technique [0002] The waterproof and anti-seepage problems of cement concrete structure have more and more significant impact on its durability, seriously affecting the quality of the project and its use function. The osmotic crystalline waterproof material is generally spread a layer of osmotic crystalline material evenly on the surface of the newly poured cement concrete, and uses ion migration to make the chemical components enter the pores of the cement concrete and undergo a hydration reaction to fill the pores and compact the structure, thereby improving The heatstroke resistance and impermeability of cement concrete structure can improve the service life of cement concrete structure. [0003] At present, the common permeable crystalline waterproof materials are ...

Claims

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Application Information

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IPC IPC(8): C04B24/24C04B24/26C04B103/65
CPCC04B40/0042C04B2103/65
Inventor 丁向群张洺硕李晓佟钰邢进
Owner SHENYANG JIANZHU UNIVERSITY
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