High-performance concrete organic-inorganic composite additive

Abstract

The invention discloses a high-performance concrete organic-inorganic composite additive. The composite additive comprises the following components by weight percent: 30-90% of active powder, 0-10% of sodium silicate and 5-70% of surface active agent. The additive disclosed by the invention is suitable for long-distance transportation; by using the additive, the compaction is increased, the durability is improved, and concrete can obtain high early strength. The additive is especially suitable for steaming and improvement of early strength.

Description

technical field [0001] The invention relates to the field of high-performance concrete, durable concrete and autoclaved concrete production, including the manufacture of high-performance concrete such as pipe piles, square piles, subway segments, prefabricated segments of river-crossing passages, high-speed rail slabs, sheet piles, etc. In particular, it relates to an organic-inorganic composite admixture for high-performance concrete. Background technique [0002] In the process of preparing high-performance concrete, the commonly used external admixtures are slag powder, fly ash, etc., and the dosage is 10-30%. The water reducing agent used is water agent, and the solid content is mostly between 18-55%. For areas with long transportation distances, these external admixtures have to be abandoned due to the high transportation cost. In order to obtain high early strength of the product, the method adopted is to use expensive early strength agents with large dosage and high p...

AI Technical Summary

Problems solved by technology

[0002] In the process of preparing high-performance concrete, the commonly used external admixtures are slag powder, fly ash, etc., the dosage is 10-30%, and the water reducing agent used is water agent, and the solid content is mostly between 18-55%. For areas with long transportation distances, these external admixtures have to be abandoned due to the high transportation cost. In order to obtain high early strength of the product, the method adopted is to use expensive early strength agents with large dosage and high pressure. Steam curing is unfavorable to the cost and performance of the product