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A platform for research: civil engineering, architecture and urbanism
Low-carbon pervious concrete based on modified recycled aggregate and preparation method of low-carbon pervious concrete
The invention discloses pervious concrete based on modified recycled aggregate. The pervious concrete comprises the following components in parts by weight: 260-500 parts of a low-carbon cementing material, 900-1600 parts of modified recycled coarse aggregate, 50-200 parts of fine aggregate, 90-180 parts of water and 9-30 parts of a water reducing agent, the preparation method of the modified recycled aggregate comprises the following steps: mechanically crushing a building demolition material, and removing impurities to obtain 5-10mm recycled coarse aggregate; the recycled coarse aggregate is soaked or sprayed and wetted by adopting an acetic acid aqueous solution; sequentially dipping with a calcium source solution and a nutrient solution under a vacuum condition; finally, dipping with a microbial suspension; the pervious concrete based on the modified recycled aggregate and the preparation method of the pervious concrete are provided for solving the problem that the pervious concrete prepared from a low-carbon binding material is large in carbonization degree difference in the carbonization curing process, through modification treatment on the recycled aggregate, the defects of the recycled aggregate can be overcome, and the service life of the pervious concrete is prolonged. And the carbonization homogeneity of the low-carbon pervious concrete can also be improved.
本发明公开了基于改性再生骨料的透水混凝土，组成按重量份数计如下：低碳胶凝材料260～500份，改性再生粗骨料900～1600份，细骨料50～200份，水90～180，减水剂9～30份；所述改性再生骨料制备方法包括以下步骤：将建筑拆除物经机械破碎，去除杂质，得到5‑10mm再生粗骨料；所述再生粗骨料采用乙酸水溶液浸泡或喷洒润湿；在真空条件下依次用钙源溶液、营养液各浸渍；最后用微生物悬浮液浸渍；针对低碳胶凝材料制备透水混凝土在碳化养护过程中存在碳化程度差异较大的问题，本发明提供了一种基于改性再生骨料的透水混凝土及其制备方法，通过对再生骨料的改性处理，不仅能够改善再生骨料本身的缺陷，还能够提高低碳透水混凝土的碳化匀质性。
Low-carbon pervious concrete based on modified recycled aggregate and preparation method of low-carbon pervious concrete
The invention discloses pervious concrete based on modified recycled aggregate. The pervious concrete comprises the following components in parts by weight: 260-500 parts of a low-carbon cementing material, 900-1600 parts of modified recycled coarse aggregate, 50-200 parts of fine aggregate, 90-180 parts of water and 9-30 parts of a water reducing agent, the preparation method of the modified recycled aggregate comprises the following steps: mechanically crushing a building demolition material, and removing impurities to obtain 5-10mm recycled coarse aggregate; the recycled coarse aggregate is soaked or sprayed and wetted by adopting an acetic acid aqueous solution; sequentially dipping with a calcium source solution and a nutrient solution under a vacuum condition; finally, dipping with a microbial suspension; the pervious concrete based on the modified recycled aggregate and the preparation method of the pervious concrete are provided for solving the problem that the pervious concrete prepared from a low-carbon binding material is large in carbonization degree difference in the carbonization curing process, through modification treatment on the recycled aggregate, the defects of the recycled aggregate can be overcome, and the service life of the pervious concrete is prolonged. And the carbonization homogeneity of the low-carbon pervious concrete can also be improved.
本发明公开了基于改性再生骨料的透水混凝土，组成按重量份数计如下：低碳胶凝材料260～500份，改性再生粗骨料900～1600份，细骨料50～200份，水90～180，减水剂9～30份；所述改性再生骨料制备方法包括以下步骤：将建筑拆除物经机械破碎，去除杂质，得到5‑10mm再生粗骨料；所述再生粗骨料采用乙酸水溶液浸泡或喷洒润湿；在真空条件下依次用钙源溶液、营养液各浸渍；最后用微生物悬浮液浸渍；针对低碳胶凝材料制备透水混凝土在碳化养护过程中存在碳化程度差异较大的问题，本发明提供了一种基于改性再生骨料的透水混凝土及其制备方法，通过对再生骨料的改性处理，不仅能够改善再生骨料本身的缺陷，还能够提高低碳透水混凝土的碳化匀质性。
Low-carbon pervious concrete based on modified recycled aggregate and preparation method of low-carbon pervious concrete
基于改性再生骨料的低碳透水混凝土及其制备方法
LI YEQING (author) / WEI YANG (author) / CHEN CHAO (author) / YU SONGBAI (author) / TAN JIANXIANG (author) / REN ZHENG (author) / QIN JIEFA (author) / LUO SIQIAO (author) / ZHANG BOWEN (author)
2024-11-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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