A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-carbon multi-component early-strength steam-curing-free concrete prefabricated part and preparation method thereof
The invention discloses a low-carbon multi-element composite early-strength steam-curing-free concrete prefabricated part and a preparation method thereof. The low-carbon multi-element composite early-strength steam-curing-free concrete prefabricated part comprises the following components in proportion: 200 +/-20kg/m < 3 > of cement, 50 +/-20kg/m < 3 > of coal ash, 50 +/-20kg/m < 3 > of semi-hydrated gypsum, 844 +/-40kg/m < 3 > of fine aggregate, 1074 +/-40kg/m < 3 > of coarse aggregate, 5 +/-3kg/m < 3 > of polycarboxylic acid water reducer, 12 +/-3kg/m < 3 > of composite early-strength agent and 130 +/-20kg/m < 3 > of water, the water-binder ratio is 0.44, and the sand ratio is 44%. By adopting the materials such as the superfine cement, the semi-hydrated gypsum and the multi-component composite early strength agent, the early strength of the concrete prefabricated part is enhanced from multiple dimensions, the use amount of the cement is greatly reduced while steam curing is avoided, the carbon emission in the production process is remarkably reduced, meanwhile, the material cost is reduced, and the economic benefit is increased. The development of the later strength of the concrete is stabilized, and the later cracking resistance of the concrete is improved.
本发明公开了一种低碳型多元复合早强免蒸养混凝土预制件及其制备方法，所述低碳型多元复合早强免蒸养混凝土预制件的配合比为：水泥200±20kg/m3，粉煤灰50±20kg/m3，半水石膏50±20kg/m3，细骨料844±40kg/m3，粗骨料1074±40kg/m3，聚羧酸减水剂5±3kg/m3，复合早强剂12±3kg/m3，水130±20kg/m3，水胶比为0.44，砂率44％。本发明通过采用超细水泥、半水石膏、多元复合早强剂等材料，从多个维度增强混凝土预制件的早期强度，在免蒸养的同时，大幅降低了水泥的用量，显著降低了生产过程中的碳排放量，同时本发明降低了材料成本，稳定了混凝土后期强度的发展，提高了混凝土后期抗开裂的能力。
Low-carbon multi-component early-strength steam-curing-free concrete prefabricated part and preparation method thereof
The invention discloses a low-carbon multi-element composite early-strength steam-curing-free concrete prefabricated part and a preparation method thereof. The low-carbon multi-element composite early-strength steam-curing-free concrete prefabricated part comprises the following components in proportion: 200 +/-20kg/m < 3 > of cement, 50 +/-20kg/m < 3 > of coal ash, 50 +/-20kg/m < 3 > of semi-hydrated gypsum, 844 +/-40kg/m < 3 > of fine aggregate, 1074 +/-40kg/m < 3 > of coarse aggregate, 5 +/-3kg/m < 3 > of polycarboxylic acid water reducer, 12 +/-3kg/m < 3 > of composite early-strength agent and 130 +/-20kg/m < 3 > of water, the water-binder ratio is 0.44, and the sand ratio is 44%. By adopting the materials such as the superfine cement, the semi-hydrated gypsum and the multi-component composite early strength agent, the early strength of the concrete prefabricated part is enhanced from multiple dimensions, the use amount of the cement is greatly reduced while steam curing is avoided, the carbon emission in the production process is remarkably reduced, meanwhile, the material cost is reduced, and the economic benefit is increased. The development of the later strength of the concrete is stabilized, and the later cracking resistance of the concrete is improved.
本发明公开了一种低碳型多元复合早强免蒸养混凝土预制件及其制备方法，所述低碳型多元复合早强免蒸养混凝土预制件的配合比为：水泥200±20kg/m3，粉煤灰50±20kg/m3，半水石膏50±20kg/m3，细骨料844±40kg/m3，粗骨料1074±40kg/m3，聚羧酸减水剂5±3kg/m3，复合早强剂12±3kg/m3，水130±20kg/m3，水胶比为0.44，砂率44％。本发明通过采用超细水泥、半水石膏、多元复合早强剂等材料，从多个维度增强混凝土预制件的早期强度，在免蒸养的同时，大幅降低了水泥的用量，显著降低了生产过程中的碳排放量，同时本发明降低了材料成本，稳定了混凝土后期强度的发展，提高了混凝土后期抗开裂的能力。
Low-carbon multi-component early-strength steam-curing-free concrete prefabricated part and preparation method thereof
一种低碳型多元复合早强免蒸养混凝土预制件及其制备方法
ZHANG YANKE (author) / ZHU SHUANGJIAN (author) / HAN YUEWEI (author) / PENG WENBIN (author) / GUI GENSHENG (author) / WEI TIANCHOU (author)
2023-04-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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