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High-permeability multi-effect concrete water-proofing agent and preparation method thereof

A technology of concrete waterproofing agent and high permeability, applied in the field of preparation of concrete waterproofing agent, can solve the problems of high product viscosity, insufficient waterproof layer thickness, increased complexity and cost, etc. The effect of penetration

Active Publication Date: 2012-07-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of high-modulus silicate as the main component, the viscosity of the product is relatively high; during the penetration process, the silicate reacts with the concrete prematurely and completely, the penetration depth is only 2-5mm, the thickness of the waterproof layer is insufficient, and the two-component The formulation increases the complexity and cost of construction

Method used

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  • High-permeability multi-effect concrete water-proofing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Add 0.1 part of fluoroaliphatic polymer lipid, 0.2 part of nonylphenol polyoxyethylene (10) ether, 0.5 part of tartaric acid, and 2.5 parts of anhydrous sodium carbonate into 33 parts of deionized water in order by weight, and stir After uniformity, let it stand for 1 hour to prepare a penetrating aid; then add 15 parts of lithium silicate (modulus 1.2) into the above penetrating aid, stir until completely dissolved, and prepare an inorganic active penetrating liquid; methyl silicon Add 16.7 parts of potassium phosphate (solid content 30%) to 32 parts of deionized water, stir until the potassium methyl silicate is fully hydrolyzed, prepare a potassium methyl silicate solution, and add it to the above-mentioned inorganic active penetrant, and stir evenly. The desired high-permeability multi-effect concrete waterproofing agent can be prepared.

[0051] The prepared concrete waterproofing agent is constructed as follows (the following examples are the same):

[0052] a) C...

Embodiment 2

[0057] 0.5 parts of polyoxyethylene-based nonionic fluorocarbon surfactants, C 12~18 Add 0.1 part of fatty alcohol polyoxyethylene (5) ether, 0.6 part of sodium tartrate, and 2 parts of anhydrous potassium carbonate into 37.9 parts of deionized water, stir evenly, and let stand for 1 hour to prepare a permeation aid; then add silicic acid Add 16 parts of potassium (modulus 2) to the above-mentioned permeation aid, stir until completely dissolved, and prepare an inorganic active permeation solution; add 5 parts of γ-glycidyl etheroxypropyl trimethoxysilane (solid content 100%) to 37.9 parts of deionized water, stirred until γ-glycidyl ether oxypropyl trimethoxysilane is fully hydrolyzed, prepared into γ-glycidyl ether oxypropyl trimethoxy silane solution, and added to the above-mentioned inorganic active penetrant, Stir evenly to obtain the desired high-permeability multi-effect concrete waterproofing agent.

Embodiment 3

[0059] Add 0.3 part of polyoxyethylene ether nonionic fluorocarbon surfactant, 0.5 part of octylphenol polyoxyethylene (10) ether, 1 part of sodium tripolyphosphate, and 0.1 part of triethanolamine in order by weight 27.5 parts of deionized water, after stirring evenly, let it stand for 1 hour to prepare a permeation aid; then add 10 parts of sodium silicate (modulus 3.3) into the above permeation aid, stir until completely dissolved, and prepare an inorganic substance Active penetrating solution; add 33 parts of sodium methyl silicate (solid content 30%) to 27.5 parts of deionized water, stir until the sodium methyl silicate is fully hydrolyzed, prepare a sodium methyl silicate solution, and add it to the above inorganic matter In the active penetrating liquid, stir evenly to obtain the required high-permeability multi-effect concrete waterproofing agent.

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Abstract

The invention discloses a high-permeability multi-effect concrete water-proofing agent and a preparation method thereof. The water-proofing agent is a colorless transparent alkaline mixed solution of which the pH value is 10-12 and the solid content is 15.4-35 percent. The method comprises the following preparation steps of: adding 0.1-0.5 part by weight of a fluorocarbon surfactant, 0.1-1 part by weight of a nonionic surfactant, 0.1-1 part by weight of an inhibiting agent and 0.1-2.5 parts by weight of a modified into 21-42 parts by weight of deionized water in sequence; uniformly stirring; adding 10-20 parts by weight of alkali metal silicate, and then adding 5-33 parts by weight of organic silicon into 21-42 parts of water; and stirring till organic silicon is fully hydrolyzed, and adding into an organic matter active penetrating fluid. The water-proofing agent has the outstanding advantage of excellent permeation capability and the advantages of maximum permeation depth of 30 millimeters, great increase in the thickness of a water-proof layer, lowering in the complexity of double-component formula construction due to the adoption of a single-component formula, saving in construction cost, nontoxicity and environmental friendliness.

Description

technical field [0001] The invention relates to the field of preparation of concrete waterproofing agent, in particular to a high-permeability multi-effect concrete waterproofing agent and a preparation method thereof. Background technique [0002] As a widely used building material, concrete is used in a huge amount in construction projects. The strength of concrete comes from the hydration of cement, which can only be hydrated in capillaries filled with water; and concrete is usually exposed to corrosive environments such as water-soluble ions (mainly chloride ions), acid rain and low temperature, and will inevitably suffer from corrosion And damage, resulting in the decline of concrete physical and mechanical properties, shortening the service life of construction projects. [0003] The key to the aforementioned cement hydration and concrete erosion is water. Concrete is a homogeneous material with a porous structure. On the one hand, during the curing period, water wi...

Claims

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Application Information

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IPC IPC(8): C04B41/50
Inventor 瞿金清苏铭健
Owner SOUTH CHINA UNIV OF TECH
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