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

A concrete and autoclave-free technology, which is applied in the field of concrete, can solve the problems of high dosage, high transportation cost and low activity, and achieve the effects of simplifying the preparation process, ensuring strength and improving activity

Pending Publication Date: 2021-04-27
无锡精诚恒科技有限公司
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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 c

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

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[0047] According to the fifth aspect of the present invention, the present invention provides a method for preparing the above concrete product, which includes the following steps: after molding the concrete material, curing it at 90-100° C. for 5-6 hours in normal pressure saturated steam to obtain concrete products.

[0048] Typical but non-limiting, the curing temperature of the concrete product provided by the present invention after forming is 90°C, 92°C, 95°C, 98°C or 100°C, and the curing time is such as 5h, 5.2h, 5.5h, 5.8h or 6h .

[0049] The preparation method of the concrete product provided by the present invention can achieve the traditional secondary curing process treatment by curing the concrete material at 90-100 DEG C for 5-6h in normal pressure saturated steam after molding (the normal pressure after the concrete is formed and formed). To maintain the strength of concrete products after 6 hours of water vapor curing and then continue curing in 1.0Mpa press...

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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...

Claims

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Application Information

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IPC IPC(8): C04B14/06C04B22/14C04B28/00
CPCC04B40/0039C04B28/00C04B2201/50
Inventor 蔡付平文平贵
Owner 无锡精诚恒科技有限公司
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