A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to recycled concrete, a recycled concrete prefabricated part and a preparation method thereof. The recycled concrete is prepared from the following raw materials in parts by weight: 325 to 420 parts of cement, 500 to 650 parts of fine aggregate, 850 to 1000 parts of coarse aggregate, 350 to 450 parts of recycled aggregate, 155 to 200 parts of water, 3 to 9 parts of a retarding type water reducing agent and 2 to 6 parts of an early strength agent. The preparation method of the recycled concrete prefabricated part comprises the steps of recycled concrete slurry preparation, concrete pouring, prefabricated part maintenance and the like. The concrete prefabricated part is obtained by adopting the preparation method of the recycled concrete prefabricated part. The flowing property of the concrete containing the recycled aggregate is improved, and the problems that the slump loss of the recycled concrete is large and the vibrating operation is difficult are solved; meanwhile, the early strength and the later strength of the concrete are also improved, the problem that demolding is difficult to realize in one day after the delayed coagulation component is added is solved, and the production cycle and the product quality of the concrete member are ensured.
本申请涉及了一种再生混凝土、再生混凝土预制构件及其制备方法。再生混凝土，由包括以下重量份的原料制备而成：水泥325‑420份、细骨料500‑650份、粗骨料850‑1000份、再生骨料350‑450份、水155‑200份、缓凝型减水剂3‑9份以及早强剂2‑6份。再生混凝土预制构件的制备方法，包括再生混凝土浆料制备、混凝土浇筑以及预制构件养护等步骤。混凝土预制构件，采用上述再生混凝土预制构件的制备方法得到。本申请提高了含再生骨料混凝土的流动性能，解决了再生混凝土坍落度损失大、振捣操作难的问题；同时本申请还提高了混凝土的早期强度和后期强度，改善了加入缓凝成分后难以一天脱模的问题，保证了混凝土构件的生产周期和产品质量。
The invention relates to recycled concrete, a recycled concrete prefabricated part and a preparation method thereof. The recycled concrete is prepared from the following raw materials in parts by weight: 325 to 420 parts of cement, 500 to 650 parts of fine aggregate, 850 to 1000 parts of coarse aggregate, 350 to 450 parts of recycled aggregate, 155 to 200 parts of water, 3 to 9 parts of a retarding type water reducing agent and 2 to 6 parts of an early strength agent. The preparation method of the recycled concrete prefabricated part comprises the steps of recycled concrete slurry preparation, concrete pouring, prefabricated part maintenance and the like. The concrete prefabricated part is obtained by adopting the preparation method of the recycled concrete prefabricated part. The flowing property of the concrete containing the recycled aggregate is improved, and the problems that the slump loss of the recycled concrete is large and the vibrating operation is difficult are solved; meanwhile, the early strength and the later strength of the concrete are also improved, the problem that demolding is difficult to realize in one day after the delayed coagulation component is added is solved, and the production cycle and the product quality of the concrete member are ensured.
本申请涉及了一种再生混凝土、再生混凝土预制构件及其制备方法。再生混凝土，由包括以下重量份的原料制备而成：水泥325‑420份、细骨料500‑650份、粗骨料850‑1000份、再生骨料350‑450份、水155‑200份、缓凝型减水剂3‑9份以及早强剂2‑6份。再生混凝土预制构件的制备方法，包括再生混凝土浆料制备、混凝土浇筑以及预制构件养护等步骤。混凝土预制构件，采用上述再生混凝土预制构件的制备方法得到。本申请提高了含再生骨料混凝土的流动性能，解决了再生混凝土坍落度损失大、振捣操作难的问题；同时本申请还提高了混凝土的早期强度和后期强度，改善了加入缓凝成分后难以一天脱模的问题，保证了混凝土构件的生产周期和产品质量。
Recycled concrete, recycled concrete prefabricated part and preparation method thereof
再生混凝土、再生混凝土预制构件及其制备方法
2021-09-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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