Liquid concrete anti-freezing agent

Abstract

The invention provides a liquid concrete anti-freezing agent, solving the problem of anti-freezing in winter construction of construction engineering. The liquid concrete anti-freezing agent is characterized by comprising the following components in part by weight: 10-25 parts of polycarboxylic acid high performance water reducing agent, 0.1-0.2 parts of nonylphenol ethoxylates, 1-3 parts of lithium sulfate, 2-5 parts of organic alcohol amine and 50-60 parts of water. The liquid concrete anti-freezing agent is prepared by uniformly mixing and stirring the components. The liquid concrete anti-freezing agent provided by the invention can be constructed at the temperature -5 to -20 DEG C, and has the advantages of nontoxic property, alkali-free property, chlorine-free property and ammonia-free release, proper water reducing amount, suitable concrete slump constant, short coagulation time, and good adaptability with cement. The liquid concrete anti-freezing agent obviously improves properties of concrete which is stirred just now and cured concrete, and can be widely applicable to a reinforced concrete structure in the winter construction.

Description

Technical field [0001] The invention belongs to the technical field of building material production, and in particular relates to a liquid concrete antifreeze, which is suitable for building construction in winter. Background technique [0002] In winter construction in northern my country, in order to ensure the quality of the project and prevent concrete from freezing damage, two protective measures are mainly taken. One is to use covering or enclosure heating methods to prevent the concrete temperature from dropping below 0°C. This method is costly and complicated to operate; The second is to add antifreeze to the concrete. This method has simple construction and good effect, so it has been widely used. So far, the antifreeze agents used in construction projects at home and abroad are all formulated with early strength components, antifreeze components and air-entraining components. Among them, the early strength components include sulfates, carbonates, nitrates, organic ...

AI Technical Summary

Problems solved by technology

Methanol is volatile and toxic; chlorine salts will corrode steel bars and affect the service life of buildings; urea, ammonia, etc. release pungent odors, affecting quality of life; nitrites are carcinogenic and can easily lead to alkali-aggregate reaction in concrete, alkali return, etc. Undesirable phenomenon, affecting the use of buildings and the quality of appearance

The air-entraining components are mainly alkyl sulfonates, rosin soaps, triterpene saponins, etc. Among them, the air bubbles induced by alkyl sulfonate products are not uniform enough, and the particle size distribution of the bubbles is wide, which affects the strength of concrete. Larger; the other two types of products have slightly better performance than alkyl sulfonate products, but the price is higher

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