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Anti-freezing super-sulfur cement concrete and preparation method thereof

A technology of supersulfur cement and concrete, which is applied in the field of material chemistry, can solve the problems of poor frost resistance, and achieve the effects of improved salt freeze resistance, obvious salt freeze resistance, and low cost

Active Publication Date: 2022-04-26
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The present invention aims at the problem of poor frost resistance of super-sulfur cement concrete existing in the prior art, provides a kind of anti-freeze super-sulfur cement concrete, and also provides a preparation method of the above-mentioned cement concrete

Method used

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  • Anti-freezing super-sulfur cement concrete and preparation method thereof
  • Anti-freezing super-sulfur cement concrete and preparation method thereof
  • Anti-freezing super-sulfur cement concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Prepare 20kg of ground supersulfur cement mixture: take 15kg of slag, 4kg of desulfurized gypsum, and 1kg of Portland cement, mix and grind to get final product;

[0023] (2) Prepare 3kg of composite additives: add 2124g of water, 195g of water reducing agent and 225g of nano silicon dioxide in proportion, stir at 1300rpm for 3min; add 450g of sodium lactate, stir at 7000rpm for 10min; add 6g of air-entraining agent, stir at 200rpm for 5min to obtain the composite additive;

[0024] (3) Ultrasonic disperse the composite additive first, then mix the finely ground supersulfur cement mixture and composite additive, and finally add 27.6kg of sand, 41.4kg of stone and 4.598kg of water to prepare frost-resistant supersulfur cement concrete.

[0025] After the mixing is completed, the concrete is formed. After 1 day, the formwork is removed and moved into the standard curing room for curing until 28 days. The concrete strength test, single-sided freeze-thaw test, etc. are c...

Embodiment 2

[0027] (1) Prepare 20kg of ground supersulfur cement mixture: take 15kg of slag, 4kg of desulfurized gypsum, and 1kg of Portland cement, mix and grind to get final product;

[0028] (2) Prepare 4kg of composite additives: add 2832g of water, 260g of water reducing agent and 300g of nano silicon dioxide in proportion, stir at 1500rpm for 3min; add 600g of sodium lactate, stir at 7500rpm for 10min; add 8g of air-entraining agent, stir at 300rpm for 5min to obtain the composite additive;

[0029] (3) Ultrasonic dispersion of composite additives, mixing finely ground supersulfur cement mixture and composite additives, adding 27.6kg of sand, 41.4kg of stone and 3.798kg of water to prepare frost-resistant supersulfur cement concrete.

[0030] After the mixing is completed, the concrete is formed. After 1 day, the formwork is removed and moved into the standard curing room for curing until 28 days. The concrete strength test, single-sided freeze-thaw test, etc. are carried out. The e...

Embodiment 3

[0032] (1) Prepare 20kg of ground supersulfur cement mixture: take 15kg of slag, 4kg of desulfurized gypsum, and 1kg of Portland cement, mix and grind to get final product;

[0033] (2) Prepare 5kg of composite additives: add water 3540g, water reducer 325g and nano silicon dioxide 375g in proportion, and stir at 1000rpm for 3min; add 750g of sodium lactate, stir at 6000rpm for 9min; add air-entraining agent 10g, stir at 200rpm for 4min to obtain the composite additive;

[0034] (3) Ultrasonic dispersion of composite additives, mixing finely ground supersulfur cement mixture and composite additives, adding 27.6kg of sand, 41.4kg of stone and 2.997kg of water to prepare frost-resistant supersulfur cement concrete.

[0035] After the mixing is completed, the concrete is formed. After 1 day, the formwork is removed and moved into the standard curing room for curing until 28 days. The concrete strength test, single-sided freeze-thaw test, etc. are carried out. The experimental res...

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Abstract

The invention discloses anti-freezing super-sulfur cement concrete and a preparation method thereof, industrial solid waste slag, desulfurized gypsum and Portland cement are compounded and ground according to a certain proportion to obtain a super-sulfur cement mixture as a cementing material, and sand, stone, water and a composite additive are added to prepare the anti-freezing super-sulfur cement concrete. On one hand, the prepared super-sulfur cement concrete has relatively high strength, and on the other hand, the salt freezing resistance of the super-sulfur cement concrete is also obviously improved; the method is simple and easy to implement, the production cost is greatly reduced, meanwhile, environmental pollution is reduced, and economic benefits and environmental benefits are achieved.

Description

technical field [0001] The invention relates to an antifreeze supersulfur cement concrete, and also relates to a preparation method of the antifreeze supersulfur cement concrete, which belongs to the technical field of material chemistry. Background technique [0002] Cement concrete has high strength, long service life, and can be manufactured into different shapes according to needs, making it the most widely used building material. According to reports, carbon dioxide emissions in the production of Portland cement account for 7% to 10% of the total emissions, and each ton of Portland cement production will be accompanied by one ton of carbon dioxide emissions. At the same time, a large amount of energy is consumed in the production process, which is contrary to the concept of environmental protection and sustainable development. As a new type of green cementitious material, supersulfur cement is composed of a large amount of industrial solid waste slag, gypsum and a smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/27C04B111/76
CPCC04B28/144C04B2111/76C04B2111/27C04B2201/50C04B18/141C04B7/02C04B2103/302C04B22/06C04B2103/304C04B24/06C04B14/06C04B14/02Y02W30/91
Inventor 周扬彭泽川陈鲁川黄家乐邢家瑞
Owner SOUTHEAST UNIV
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