Non-autoclaved concrete admixture, cement mixture, concrete material, concrete product and preparation method

Abstract

The invention provides a non-autoclaved concrete admixture, a cement mixture, a concrete material, a concrete product and a preparation method, and relates to the technical field of concrete. The non-autoclaved concrete admixture provided by the invention comprises active silicon oxide micro-powder and natural anhydrite, and the mass ratio of the active silicon oxide micro-powder to the natural anhydrite is 1: 9-9: 1. According to the non-autoclaved concrete admixture provided by the invention, through mutual cooperation of the active silica powder and the natural anhydrite, the activity is remarkably improved, a large amount of dicalcium silicate and tricalcium silicate can be generated in the hydration process of a concrete material after cement is equivalently replaced according to the proportion of 5wt%-10wt%, and the early strength of a concrete product is remarkably improved; and meanwhile, the continuous increase of the strength of the concrete product can be ensured by adopting natural curing in the later period, the transportation cost is reduced, the preparation process of the concrete product is simplified, and lots of manpower and material resources are saved.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to an autoclave-free concrete admixture, cement mixture, concrete material, concrete product and a preparation method. Background technique [0002] The non-autoclaved concrete admixture popular in the market is mainly made of conventional slag powder and fly ash as the main raw materials, which are compounded by grinding. However, due to the limited activity of slag micropowder and fly ash, the amount of this type of admixture in concrete materials is relatively high, generally about 30%, which makes the transportation cost high. [0003] In view of this, the present invention is proposed. Contents of the invention [0004] One of the purposes of the present invention is to provide a non-autoclaved concrete admixture to improve the low activity of the existing non-autoclaved concrete admixture made of conventional slag powder and fly ash as main raw materials through grinding a...

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a non-autoclaved concrete admixture to improve the low activity of the existing non-autoclaved concrete admixture made of conventional slag powder and fly ash as main raw materials through grinding and compounding. The high dosage in concrete materials leads to the technical problem of high transportation costs

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