Recycled coarse aggregate concrete and preparation method thereof
Abstract
According to the recycled coarse aggregate concrete and the preparation method thereof provided by the invention, the recycled coarse aggregate is prepared by using the waste concrete, and the gelatinized starch permeating into the gaps of the recycled coarse aggregate is subjected to grafting reaction, so that the gaps generated in the crushing process of the recycled coarse aggregate are filled, and the water absorption rate of the coarse aggregate is reduced, so that the quality of the concrete is ensured. After the starch free radical solution infiltrating into the gaps of the recycled coarse aggregate and the unsaturated monomer are subjected to polymerization reaction, an approximately continuous structure is formed, and the bonding strength of the recycled coarse aggregate and other components is improved. Along with the increase of the addition proportion of the starch free radical solution, the release amount of cement hydration heat is also reduced to a certain extent, so that the formula is also beneficial to reducing the temperature stress of the concrete and reducing the cracking of the concrete.
Inventors 4
- Qiu, Ying
- H. Zhang Aachen author as filed: Zhang, Hua
- Xian, Jiazhi
- Ma, Binbin
Inventors are linked to an Aachen author when surname and first name match exactly one author.
Applicants
- 江苏亚琛材料科技有限公司
- Jiangsu Aachen Material Tech Co Ltd
- Kunshan Xianglu Cement Products Co Ltd
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