Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Recycled concrete and preparation method thereof
The invention discloses recycled concrete and a preparation method thereof, and relates to the technical field of concrete.The recycled concrete is prepared from, by weight, 320-400 parts of cement, 180-220 parts of water, 450-500 parts of recycled coarse aggregate, 300-380 parts of recycled fine aggregate, 14-20 parts of a water reducing agent, 20-30 parts of fly ash, 20-30 parts of gravel and 20-30 parts of composite fibers, and the recycled coarse aggregate, the recycled fine aggregate, the water reducing agent, the fly ash, the gravel and the composite fibers are mixed according to the weight ratio. The concrete is prepared from 80-130 parts of fly ash, 380-460 parts of gravel and 100-150 parts of composite fibers. The cement, the recycled coarse aggregate and the recycled fine aggregate are used as base materials of the recycled concrete, and the recycled coarse aggregate and the recycled fine aggregate are modified, so that microcracks and the water absorption rate in the recycled coarse aggregate are reduced, and the microcracks and the water absorption rate of the recycled concrete are improved; meanwhile, the produced recycled concrete has relatively high compressive strength, the mechanical strength of the recycled concrete is enhanced, and the waste concrete can be recycled again, so that the pollution to the environment is reduced, and the production cost can be reduced.
本发明公开了一种再生混凝土及其制备方法，涉及混凝土技术领域，再生混凝土由水泥、水、再生粗骨料、再生细骨料、减水剂、粉煤灰、碎石和复合纤维配制组成，各成分配重量配比为，水泥320‑400份，水180‑220份，再生粗骨料450‑500份，再生细骨料300‑380份，减水剂14‑20份，粉煤灰80‑130份，碎石380‑460份，复合纤维100‑150份。本发明通过以水泥、再生粗骨料和再生细骨料为再生混凝土的基材，并且对再生粗骨料和再生细骨料进行改性，从而使再生粗骨料中的微裂缝和吸水率进行降低，使再生混凝土的微裂缝和吸水率进行改善，同时也使生产的再生混凝土具有较高的抗压强度，增强再生混凝土的机械强度，并且也能对废旧混凝土进行再次回收使用，减少对环境的污染，能够减少生产的成本。
Recycled concrete and preparation method thereof
The invention discloses recycled concrete and a preparation method thereof, and relates to the technical field of concrete.The recycled concrete is prepared from, by weight, 320-400 parts of cement, 180-220 parts of water, 450-500 parts of recycled coarse aggregate, 300-380 parts of recycled fine aggregate, 14-20 parts of a water reducing agent, 20-30 parts of fly ash, 20-30 parts of gravel and 20-30 parts of composite fibers, and the recycled coarse aggregate, the recycled fine aggregate, the water reducing agent, the fly ash, the gravel and the composite fibers are mixed according to the weight ratio. The concrete is prepared from 80-130 parts of fly ash, 380-460 parts of gravel and 100-150 parts of composite fibers. The cement, the recycled coarse aggregate and the recycled fine aggregate are used as base materials of the recycled concrete, and the recycled coarse aggregate and the recycled fine aggregate are modified, so that microcracks and the water absorption rate in the recycled coarse aggregate are reduced, and the microcracks and the water absorption rate of the recycled concrete are improved; meanwhile, the produced recycled concrete has relatively high compressive strength, the mechanical strength of the recycled concrete is enhanced, and the waste concrete can be recycled again, so that the pollution to the environment is reduced, and the production cost can be reduced.
本发明公开了一种再生混凝土及其制备方法，涉及混凝土技术领域，再生混凝土由水泥、水、再生粗骨料、再生细骨料、减水剂、粉煤灰、碎石和复合纤维配制组成，各成分配重量配比为，水泥320‑400份，水180‑220份，再生粗骨料450‑500份，再生细骨料300‑380份，减水剂14‑20份，粉煤灰80‑130份，碎石380‑460份，复合纤维100‑150份。本发明通过以水泥、再生粗骨料和再生细骨料为再生混凝土的基材，并且对再生粗骨料和再生细骨料进行改性，从而使再生粗骨料中的微裂缝和吸水率进行降低，使再生混凝土的微裂缝和吸水率进行改善，同时也使生产的再生混凝土具有较高的抗压强度，增强再生混凝土的机械强度，并且也能对废旧混凝土进行再次回收使用，减少对环境的污染，能够减少生产的成本。
Recycled concrete and preparation method thereof
一种再生混凝土及其制备方法
FENG WEI (Autor:in) / TU XINGHE (Autor:in) / LYU LONG (Autor:in) / SONG QINGJU (Autor:in)
12.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Recycled concrete, recycled concrete prefabricated part and preparation method thereof
| Europäisches Patentamt | 2021