Waterproofing agent for mortar concrete and preparation method thereof

Abstract

The invention relates to a waterproofing agent for mortar concrete and a preparation method thereof in the field of building materials. The waterproofing agent for mortar concrete is prepared by compounding multiple inorganic and organic admixtures and comprises the following components accounting for total weight of the waterproofing agent: 5-15% of moisture-proof agent, 50-60% of inorganic substance waterproofing agent, 1-3% of inorganic water reducing agent, 1-2.5% of rust inhibitor, 6-9% of early strength agent, 3-10% of surfactant, 0.1-30% of superplasticizer, 1-5% of dispersant and 0.1-1% of thickener. The waterproofing agent integrates various waterproofing and anti-permeability functions into a whole, is small is usage amount of water and excellent in waterproof effect, not only improves the compactness, compressive strength and waterproof and anti-permeability performance of the concrete, but also has multiple functions such as rust resistance, cracking resistance, hydration heat release delaying and reduction, crack prevention, freezing resistance and bleeding reduction. The waterproofing agent is a powder additive, is simple in production process, low in cost, easy to package and transport and capable of better solving problems such as inconvenience in measurement. Through detection, the performance indexes of the waterproofing agent reach or exceed the national building material industry JC474-2008 standard.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a waterproofing agent for mortar concrete and a preparation method thereof. Background technique [0002] Existing waterproofing agents can be divided into two categories from the method of use: one is externally coated waterproofing membranes, coatings, and sealants, and the other is mixing emulsions, polymers, inorganic or organic externally mixed mortars. material. The main problems faced by external coating waterproof materials are easy aging, short service life, and limited scope of use, such as being unable to be used for internal walls and ground impermeability. The external waterproofing agent can form an organic whole with mortar concrete, which is durable, low in cost, and easy to construct. However, the current waterproofing agent market has a wide variety of product specifications, a mixture of good and bad, large price differences, and various defects in performanc...

AI Technical Summary

Problems solved by technology

However, in the actual use of the currently commercially available composite mortar concrete waterproofing agent products, there are often problems such as low strength of the construction waterproof layer, long opening time, poor waterproof effect, and short life. In addition, there are toxic and harmful components used. For example, a waterproof additive for cement is mentioned in the Chinese patent application number 201410059359.6, and the sodium fluorosilicate used in it is a poisonous product among dangerous chemicals; Potassium dichromate used in the preparation method of high-efficiency composite mortar and concrete waterproofing agent with application number 201510338833.3 is a toxic and carcinogenic strong oxidant, which is classified as the first category by the International Agency for Research on Cancer carcinogen

These ingredients do not meet the increasingly stringent environmental protection requirements; at the same time, in the Chinese patent application number 201510963720.2, which focuses on non-toxic and environmental protection, an early-strength waterproofing agent for ordinary Portland cement is disclosed, but its corrosion resistance is not enough , the strength of time resistance needs to be improved

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