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A platform for research: civil engineering, architecture and urbanism
Structure capable of preventing concrete long wall early cracking, construction method and application
The invention relates to a structure capable of preventing concrete long wall early cracking, a construction method and application. The structure comprises an existing concrete wall body, a newly poured concrete wall body, and a concrete retarded coagulation layer arranged between the existing concrete wall body and the newly poured concrete wall body. The coagulation time of the concrete retarded coagulation layer is at least five days, the concrete retarded coagulation layer reaches the design strength within 28 days after pouring, and the percentage of contraction is 0%; and the concrete retarded coagulation layer comprises 0.5%-1% of a retarder by weight, and the retarder comprises the following components including, by weight, 100-200 g/L of gluconic acid, 200-300 g/L of citric acid,10-50 g/L of sodium tripolyphosphate and 10-50 g/L of sodium pyrophosphate. The structure is good in anti-cracking effect and easy in construction.
本发明涉及一种防止混凝土长墙早期开裂的结构、施工方法和应用，包括既有混凝土墙体、新浇筑混凝土墙体，以及设置在既有混凝土墙体和新浇筑混凝土墙体之间的混凝土缓凝层，所述混凝土缓凝层的凝结时间至少为5天，混凝土缓凝层在浇筑后28天内达到设计强度，收缩率为0％，混凝土缓凝层包括重量百分数为0.5‑1％的缓凝剂，所述缓凝剂包括如下重量组分，葡萄糖酸100‑200g/L，柠檬酸200‑300g/L，三聚磷酸钠10‑50g/L，焦磷酸钠10‑50g/L，本发明防开裂效果好，施工简单。
Structure capable of preventing concrete long wall early cracking, construction method and application
The invention relates to a structure capable of preventing concrete long wall early cracking, a construction method and application. The structure comprises an existing concrete wall body, a newly poured concrete wall body, and a concrete retarded coagulation layer arranged between the existing concrete wall body and the newly poured concrete wall body. The coagulation time of the concrete retarded coagulation layer is at least five days, the concrete retarded coagulation layer reaches the design strength within 28 days after pouring, and the percentage of contraction is 0%; and the concrete retarded coagulation layer comprises 0.5%-1% of a retarder by weight, and the retarder comprises the following components including, by weight, 100-200 g/L of gluconic acid, 200-300 g/L of citric acid,10-50 g/L of sodium tripolyphosphate and 10-50 g/L of sodium pyrophosphate. The structure is good in anti-cracking effect and easy in construction.
本发明涉及一种防止混凝土长墙早期开裂的结构、施工方法和应用，包括既有混凝土墙体、新浇筑混凝土墙体，以及设置在既有混凝土墙体和新浇筑混凝土墙体之间的混凝土缓凝层，所述混凝土缓凝层的凝结时间至少为5天，混凝土缓凝层在浇筑后28天内达到设计强度，收缩率为0％，混凝土缓凝层包括重量百分数为0.5‑1％的缓凝剂，所述缓凝剂包括如下重量组分，葡萄糖酸100‑200g/L，柠檬酸200‑300g/L，三聚磷酸钠10‑50g/L，焦磷酸钠10‑50g/L，本发明防开裂效果好，施工简单。
Structure capable of preventing concrete long wall early cracking, construction method and application
一种防止混凝土长墙早期开裂的结构、施工方法和应用
JIANG ZHENGLYU (author) / JI HONGQI (author) / HUANG ZHENGYU (author) / SU JIE (author) / LI LEI (author) / AI GUOPING (author) / DU GUOTAO (author) / HE JIA (author) / LIU LUMING (author) / WANG DINGHUI (author)
2020-05-29
Patent
Electronic Resource
Chinese
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