A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Carbon sequestration type ultrahigh pumping concrete and preparation method thereof
The invention provides a preparation method of carbon sequestration type ultrahigh pumping concrete, which comprises the following steps: firstly, mixing cement, mineral powder, I type cement waste slurry and a polycarboxylic acid water reducer, introducing CO2, and reacting to obtain carbon sequestration type cementing material slurry; the method comprises the following steps: mixing sand, gravels and II type cement waste slurry, introducing CO2, filtering, naturally air-drying, and reacting to obtain a carbon sequestration type aggregate; secondly, mixing a polycarboxylic acid slump retaining agent, a defoaming agent and water to obtain a rheological modifier; thirdly, adopting a fluidized bed-chemical vapor deposition method to cover the surface of the mixture of the silica fume and the fly ash with the atomized rheology regulator to obtain a rheology regulation admixture; and finally, weighing the carbon sequestration type cementing material slurry, the carbon sequestration type aggregate, the rheology adjusting admixture and the air entraining agent in proportion, and uniformly stirring and mixing to obtain the carbon sequestration type ultrahigh-pumping concrete. The carbon sequestration type ultrahigh-pumping concrete prepared by the invention has the dual advantages of CO2 curing and excellent pumping performance, and is beneficial to the development of the building material industry.
本发明提供一种固碳型超高泵送混凝土的制备方法，包括以下步骤：首先，将水泥、矿粉、I型水泥废浆和聚羧酸系减水剂混合，通入CO2，反应得到固碳型胶凝材料浆料；将砂、碎石和II型水泥废浆混合，通入CO2，然后过滤、自然风干，反应得到固碳型骨料；其次，将聚羧酸系保坍剂、消泡剂和水混合，得到流变调节剂；再次，采用流化床‑化学气相沉积法，将雾化后的流变调节剂覆盖于硅灰和粉煤灰混合物的表面，得到流变调节掺合料；最后，按比例称取固碳型胶凝材料浆料、固碳型骨料、流变调节掺合料和引气剂，搅拌混合均匀，得到固碳型超高泵送混凝土。本发明制得的固碳型超高泵送混凝土兼具CO2固化和优异泵送性能双重优势，利于建材工业发展。
Carbon sequestration type ultrahigh pumping concrete and preparation method thereof
The invention provides a preparation method of carbon sequestration type ultrahigh pumping concrete, which comprises the following steps: firstly, mixing cement, mineral powder, I type cement waste slurry and a polycarboxylic acid water reducer, introducing CO2, and reacting to obtain carbon sequestration type cementing material slurry; the method comprises the following steps: mixing sand, gravels and II type cement waste slurry, introducing CO2, filtering, naturally air-drying, and reacting to obtain a carbon sequestration type aggregate; secondly, mixing a polycarboxylic acid slump retaining agent, a defoaming agent and water to obtain a rheological modifier; thirdly, adopting a fluidized bed-chemical vapor deposition method to cover the surface of the mixture of the silica fume and the fly ash with the atomized rheology regulator to obtain a rheology regulation admixture; and finally, weighing the carbon sequestration type cementing material slurry, the carbon sequestration type aggregate, the rheology adjusting admixture and the air entraining agent in proportion, and uniformly stirring and mixing to obtain the carbon sequestration type ultrahigh-pumping concrete. The carbon sequestration type ultrahigh-pumping concrete prepared by the invention has the dual advantages of CO2 curing and excellent pumping performance, and is beneficial to the development of the building material industry.
本发明提供一种固碳型超高泵送混凝土的制备方法，包括以下步骤：首先，将水泥、矿粉、I型水泥废浆和聚羧酸系减水剂混合，通入CO2，反应得到固碳型胶凝材料浆料；将砂、碎石和II型水泥废浆混合，通入CO2，然后过滤、自然风干，反应得到固碳型骨料；其次，将聚羧酸系保坍剂、消泡剂和水混合，得到流变调节剂；再次，采用流化床‑化学气相沉积法，将雾化后的流变调节剂覆盖于硅灰和粉煤灰混合物的表面，得到流变调节掺合料；最后，按比例称取固碳型胶凝材料浆料、固碳型骨料、流变调节掺合料和引气剂，搅拌混合均匀，得到固碳型超高泵送混凝土。本发明制得的固碳型超高泵送混凝土兼具CO2固化和优异泵送性能双重优势，利于建材工业发展。
Carbon sequestration type ultrahigh pumping concrete and preparation method thereof
一种固碳型超高泵送混凝土及其制备方法
HE XINGYANG (author) / LIU SENYE (author) / QI HUAHUI (author) / SU YING (author) / YANG JIN (author) / LU SIYU (author) / CHEN JIAYU (author) / CHEN RUI (author)
2023-09-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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