Highly efficient composite concrete anti-freezing agent and preparation method thereof

Abstract

The invention discloses a highly efficient composite concrete anti-freezing agent and a preparation method thereof which relates to the technical field of concrete anti-freezing agent. The concrete anti-freezing agent comprises lignin sulfonate, sodium sulfate, silicate, triethanolamine, ammonium chloride, beta naphthalene sulfonate formaldehyde condensate, glucose laurate, N sodium laurate, pH regulator, low molecular weight alcohol and water. The agent has the advantages of proper water reducing rate, minimum losses through concrete, short condensation time, good compatibility with water and observable improvement of the early strength of concrete. The anti-freezing agent can make sure of the normal and stable production of concrete, grant the concrete great anti-freezing effects. Moreover the manufacturing process of the anti-freezing agent is simple and not costly.

Description

technical field [0001] The invention relates to the technical field of concrete antifreeze, in particular to a high-efficiency composite concrete antifreeze and a preparation method thereof. Background technique [0002] Since the advent of Portland cement in the 1920s, concrete materials and their application techniques have been continuously developed. Concrete has become the most widely used building material in modern civil engineering. If the concrete can be designed correctly according to the use environment, and at the same time be constructed and maintained according to the requirements, concrete will be a very durable structural material, and its service life can reach a hundred years or even longer. However, freeze-thaw cycles are one of the main causes of concrete damage in cold regions of the world, especially in severe cold regions, and most of them occur in buildings in contact with water such as dams, roads, pools, and cooling towers of power stations. In th...

AI Technical Summary

Problems solved by technology

Although the above-mentioned air-entraining antifreeze agents can effectively improve the frost resistance of concrete, the tiny air bubbles introduced by them will inevitably be lost during the process of mixing, transportation and pouring, which is the so-called air content damage problem.

The loss of air content makes it difficult to design or control the real air content of hardened concrete. If the real air content of concrete is too high, the strength of concrete will be reduced; if the air content is too low, it will be difficult to achieve the expected frost resistance.