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Method for preparing road concrete from admixtures steel slag micro-powder, superfine slag powder and fly ash
The invention discloses a method for preparing road concrete from admixtures steel slag micro-powder, superfine slag powder and fly ash. The road concrete mainly consists of a cementing material, mixing water, coarse and fine aggregates and additives, wherein the cementing material is obtained by compounding the following components in percentage by mass: 40 to 80 percent of cement, 5 to 20 percent of steel slag micro-powder, 5 to 20 percent of superfine slag powder and 5 to 20 percent of fly ash; the water-cement ratio is controlled to be 0.35 to 0.45; the coarse and fine aggregates are continuously graded; the sand ratio is controlled to be 31 to 41 percent; the additives comprise a polycarboxylic superplasticizer and a plant protein air-entraining agent, and the doping amounts of the polycarboxylic superplasticizer and the plant protein air-entraining agent are 1.5 to 2.5 percent and 0.5 to 1.5 percent based on the mass of the cementing material respectively. The method is simple, and has remarkable economic benefits and social benefits, the prepared road concrete has breaking strength of 4.7 to 7.6MPa, and is higher in working performance, mechanical performance and durability, and the utilization rates of steel slag micro-powder, superfine slag powder and fly ash can be remarkably increased.
Method for preparing road concrete from admixtures steel slag micro-powder, superfine slag powder and fly ash
The invention discloses a method for preparing road concrete from admixtures steel slag micro-powder, superfine slag powder and fly ash. The road concrete mainly consists of a cementing material, mixing water, coarse and fine aggregates and additives, wherein the cementing material is obtained by compounding the following components in percentage by mass: 40 to 80 percent of cement, 5 to 20 percent of steel slag micro-powder, 5 to 20 percent of superfine slag powder and 5 to 20 percent of fly ash; the water-cement ratio is controlled to be 0.35 to 0.45; the coarse and fine aggregates are continuously graded; the sand ratio is controlled to be 31 to 41 percent; the additives comprise a polycarboxylic superplasticizer and a plant protein air-entraining agent, and the doping amounts of the polycarboxylic superplasticizer and the plant protein air-entraining agent are 1.5 to 2.5 percent and 0.5 to 1.5 percent based on the mass of the cementing material respectively. The method is simple, and has remarkable economic benefits and social benefits, the prepared road concrete has breaking strength of 4.7 to 7.6MPa, and is higher in working performance, mechanical performance and durability, and the utilization rates of steel slag micro-powder, superfine slag powder and fly ash can be remarkably increased.
Method for preparing road concrete from admixtures steel slag micro-powder, superfine slag powder and fly ash
FUTIAN LIU (author) / KAIQIANG SONG (author)
2015-10-07
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2022
Processing method for preparing concrete admixture from superfine slag powder
| European Patent Office | 2021
| European Patent Office | 2015