Compounding method and application of novel anti-freeze composite additive

Abstract

The invention provides a compounding method and an application of a novel anti-freeze composite additive. The additive comprises 6-12wt% of hydroxysuccinimide, 28-34wt% of dimethyl formamide, 5wt% of triethanolamine, 6wt% of a naphthalene water reducer, 8wt% of a sodium alkyl sulfate air entraining agent and 41wt% of water. The novel anti-freeze composite additive is added to cement according to a weight ratio of the additive to used cement of 5.0:100 at an environment temperature of -12DEG C, and the novel anti-freeze composite additive is added to cement according to a weight ratio of the additive to the used cement of 8.0:100 at an environment temperature of -12-20DEG C. The novel anti-freeze composite additive can effectively promote setting of concrete under low temperature or minus temperature conditions, obviously improves the workability and the durability of the concrete, has the effects of early strength, water reduction, air entraining and freeze prevention, and is mainly used in concrete for casting of industrial civil buildings, roads and bridges.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to the compounding and application of a novel antifreeze and antifreeze composite admixture. Background technique [0002] When the civil engineering industry conducts concrete construction in winter, the poured concrete is covered with thermal insulation materials to ensure the construction quality, but it is far from meeting the requirements. Antifreeze is often added to the concrete to ensure the quality of the concrete at low temperatures, while The physical properties of concrete paste are closely related to the rheological parameters of early concrete paste, and antifreeze has a great influence on its rheological parameters. Although the sodium-based concrete composite antifreeze is a commonly used additive in winter construction, the formed concrete has high early strength and fast hydration; however, there is a conflict with the requirement that the concrete have ...

AI Technical Summary

Problems solved by technology

Although the sodium-based concrete composite antifreeze is a commonly used additive in winter construction, the formed concrete has high early strength and fast hydration; however, there is a conflict with the requirement that the concrete have good working performance during construction

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