Concrete composite liquid anti-freezing pumping agent

Abstract

The invention provides a concrete composite liquid anti-freezing pumping agent and belongs to the technical field of the concrete pumping agent. The pumping agent is composed of the following components: a low-concentration naphthalene efficient water reducer, a sulfamate water reducer, sodium nitrite, an organic alcohol, water, sodium gluconate and dry Chinese honeylocust fruit powder, in a weight ratio of 1: 0.385: 0.3: 0.056: 2.017: 0.06: 0.013. The concrete composite liquid anti-freezing pumping agent provided by the invention has the advantages that all the components have synergistic effect to inhibit crystallization of an early strength component at a minus temperature, well control the slump of the concrete and keep development of the early strength of the concrete, and simultaneously, bubbles are introduced into the concrete and neat paste to improve the workability (peaceability) of the concrete and the cement neat paste, and therefore, the adaptability of the liquid anti-freezing pumping agent can be improved and the anti-freezing durability of the concrete can be greatly improved; besides, the anti-freezing pumping agent is free of chlorine, low in alkali, and in the form of a liquid, and thereby more convenient for storage, transportation and use.

Description

Technical field [0001] The invention belongs to the technical field of concrete pumping agents, and specifically relates to a concrete composite liquid antifreeze pumping agent. Background technique [0002] In the process of concrete construction, the transportation and pouring of concrete is an arduous and critical task. It requires speed, timeliness, quality assurance and reduced labor consumption. This is increasingly important in modern concrete projects characterized by large-scale, high-rise, and more complex. As a result, concrete pumping construction technology came into being, and it has become one of the signs of modern concrete. [0003] The mixing ratio design of pumping concrete is inseparable from admixtures, and the pumping agent is undoubtedly the most commonly used one. For pumping construction in a general construction environment, only add the pumping agent as an additive. [0004] However, the speed of cement hydration is not only related to the material and ...

AI Technical Summary

Problems solved by technology

[0005] At present, the most widely used concrete antifreeze pumping agents in China are sodium nitrite type, calcium nitrite type and chlorine salt anti-rust antifreeze agent, and these antifreeze agents are generally powder, with high alkali content and large dosage , There are many carriers, which affect the durability of concrete, and are not conducive to pumping construction and commercialization of concrete

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