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Preparation method of carbon sequestration concrete by using solid waste as cementing material and olivine aggregate
The invention discloses a preparation method of carbon sequestration concrete by using solid waste as a cementing material and olivine aggregate, which comprises the following steps: respectively placing 1167-1273 parts of olivine coarse aggregate and 573-665 parts of olivine fine aggregate in a supercritical carbon dioxide reaction kettle, and introducing CO2 for carbon sequestration; adding the olivine coarse aggregate and the olivine fine aggregate after carbon sequestration, 36-42 parts of fly ash, 2-84 parts of steel slag and 252-294 parts of cement into a stirrer, and uniformly stirring; 0.36-0.42 part of a polycarboxylate superplasticizer is poured into 185-195 parts of water to be dissolved, the dissolved polycarboxylate superplasticizer and the water are poured into a stirrer to be stirred evenly, the evenly stirred concrete is poured into a mold to be formed, and formed concrete is obtained; the formed concrete is placed in a carbonization box to be cured with CO2, and carbon fixation concrete is obtained; the production cost of the concrete is reduced, the utilization rate of the coal ash and the steel slag is increased, supercritical carbon dioxide is used for carbonizing the olivine fine aggregate and the olivine coarse aggregate, the carbon sequestration amount of the olivine and the conversion rate of the olivine are increased, the carbon sequestration amount of the concrete is increased, and the strength of the concrete is improved.
本发明公开一种固废作为胶凝材料和橄榄石骨料固碳混凝土的制备方法，将1167～1273份橄榄石粗骨料和573～665份橄榄石细骨料分别放置在超临界二氧化碳反应釜中，通入CO2固碳；将固碳后的橄榄石粗骨料和橄榄石细骨料以及36～42份粉煤灰、2～84份钢渣和252～294份水泥加入搅拌机中搅拌均匀；将0.36～0.42份聚羧酸减水剂倒入185～195份水中溶解后一起倒入搅拌机中搅拌均匀，将搅拌均匀后的混凝土倒入模具中成型得到成型后的混凝土；将成型后的混凝土放置在碳化箱中用CO2养护得到固碳混凝土；降低了混凝土的生产成本，提高了煤灰和钢渣的利用率，用超临界二氧化碳对橄榄石细骨料和橄榄石粗骨料进行碳化，提高橄榄石的固碳量和橄榄石的转化率，提高混凝土的固碳量和提升混凝土的强度。
Preparation method of carbon sequestration concrete by using solid waste as cementing material and olivine aggregate
The invention discloses a preparation method of carbon sequestration concrete by using solid waste as a cementing material and olivine aggregate, which comprises the following steps: respectively placing 1167-1273 parts of olivine coarse aggregate and 573-665 parts of olivine fine aggregate in a supercritical carbon dioxide reaction kettle, and introducing CO2 for carbon sequestration; adding the olivine coarse aggregate and the olivine fine aggregate after carbon sequestration, 36-42 parts of fly ash, 2-84 parts of steel slag and 252-294 parts of cement into a stirrer, and uniformly stirring; 0.36-0.42 part of a polycarboxylate superplasticizer is poured into 185-195 parts of water to be dissolved, the dissolved polycarboxylate superplasticizer and the water are poured into a stirrer to be stirred evenly, the evenly stirred concrete is poured into a mold to be formed, and formed concrete is obtained; the formed concrete is placed in a carbonization box to be cured with CO2, and carbon fixation concrete is obtained; the production cost of the concrete is reduced, the utilization rate of the coal ash and the steel slag is increased, supercritical carbon dioxide is used for carbonizing the olivine fine aggregate and the olivine coarse aggregate, the carbon sequestration amount of the olivine and the conversion rate of the olivine are increased, the carbon sequestration amount of the concrete is increased, and the strength of the concrete is improved.
本发明公开一种固废作为胶凝材料和橄榄石骨料固碳混凝土的制备方法，将1167～1273份橄榄石粗骨料和573～665份橄榄石细骨料分别放置在超临界二氧化碳反应釜中，通入CO2固碳；将固碳后的橄榄石粗骨料和橄榄石细骨料以及36～42份粉煤灰、2～84份钢渣和252～294份水泥加入搅拌机中搅拌均匀；将0.36～0.42份聚羧酸减水剂倒入185～195份水中溶解后一起倒入搅拌机中搅拌均匀，将搅拌均匀后的混凝土倒入模具中成型得到成型后的混凝土；将成型后的混凝土放置在碳化箱中用CO2养护得到固碳混凝土；降低了混凝土的生产成本，提高了煤灰和钢渣的利用率，用超临界二氧化碳对橄榄石细骨料和橄榄石粗骨料进行碳化，提高橄榄石的固碳量和橄榄石的转化率，提高混凝土的固碳量和提升混凝土的强度。
Preparation method of carbon sequestration concrete by using solid waste as cementing material and olivine aggregate
固废作为胶凝材料和橄榄石骨料固碳混凝土的制备方法
XU JUN (author) / DU DAGANG (author) / SU CHUANYE (author) / WANG TAO (author) / YUN SE-CHANG (author) / CHEN BANGHUI (author) / ZHAN JIAYI (author)
2024-05-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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