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A platform for research: civil engineering, architecture and urbanism
Composite cementing material coal gangue pervious concrete and preparation method thereof
The invention discloses a composite cementing material coal gangue pervious concrete which is composed of the following materials in parts by weight: 200-320 parts of ordinary cement, 80-200 parts ofactive mineral admixture, 2-4 parts of naphthalene or polycarboxylate superplasticizer, 120 parts of water and 1390 parts of coal gangue aggregate. The preparation method comprises the following steps: (1) crushing and screening coal gangue until the content of flaky and acicular particles does not exceed 15%, and selecting coal gangue with the particle size of 5-10mm as coarse aggregate; and (2)uniformly stirring the coal gangue aggregate, the cement and the mineral admixture which are weighed in parts by weight, adding water, carrying out stirring, adding the water reducing agent, and uniformly stirring to obtain the pervious concrete. The composite cementing material and the coal gangue aggregate are adopted to prepare the pervious concrete, the strength and durability of the concretecan be improved, the mineral admixture is in a certain mixing amount range, and the 28d strength, frost resistance and carbonization resistance of the pervious concrete are all improved; the permeableconcrete is prepared from industrial solid wastes such as coal gangue and fly ash, so that the solid wastes are consumed, the resources are saved, the pollution is reduced, the environment is protected, and the concrete material can meet the development requirements for green building materials as well as the requirements of urban ecological construction and sustainable development.
本发明公开了一种复合胶凝材料煤矸石透水混凝土由下列物料按照重量份数组合而成：普通水泥200‑320份，活性矿物掺合料80‑200份，萘系或聚羧酸减水剂2‑4份，水120份，煤矸石骨料1390份。制备方法步骤如下：（1）将煤矸石经过破碎筛选后，片状和针状颗粒含量不超过15%，选择粒径为5‑10mm的煤矸石作为粗骨料；（2）将按重量份数配比称量好的煤矸石骨料、水泥、矿物掺合料搅拌均匀，然后加水搅拌，再加入减水剂，搅拌均匀后制成透水混凝土。本发明采用复合胶凝材料、煤矸石骨料配制透水混凝土，能够改善混凝土的强度和耐久性，矿物掺合料在一定掺量范围内，透水混凝土28d强度、抗冻性能、抗碳化能力均有所提升；利用煤矸石、粉煤灰等工业固废制备透水混凝土，既消耗了固废、节约了资源，又减少了污染、保护了环境，还能使混凝土材料符合绿色建筑材料的发展要求，满足城市生态建设和可持续发展的需要。
Composite cementing material coal gangue pervious concrete and preparation method thereof
The invention discloses a composite cementing material coal gangue pervious concrete which is composed of the following materials in parts by weight: 200-320 parts of ordinary cement, 80-200 parts ofactive mineral admixture, 2-4 parts of naphthalene or polycarboxylate superplasticizer, 120 parts of water and 1390 parts of coal gangue aggregate. The preparation method comprises the following steps: (1) crushing and screening coal gangue until the content of flaky and acicular particles does not exceed 15%, and selecting coal gangue with the particle size of 5-10mm as coarse aggregate; and (2)uniformly stirring the coal gangue aggregate, the cement and the mineral admixture which are weighed in parts by weight, adding water, carrying out stirring, adding the water reducing agent, and uniformly stirring to obtain the pervious concrete. The composite cementing material and the coal gangue aggregate are adopted to prepare the pervious concrete, the strength and durability of the concretecan be improved, the mineral admixture is in a certain mixing amount range, and the 28d strength, frost resistance and carbonization resistance of the pervious concrete are all improved; the permeableconcrete is prepared from industrial solid wastes such as coal gangue and fly ash, so that the solid wastes are consumed, the resources are saved, the pollution is reduced, the environment is protected, and the concrete material can meet the development requirements for green building materials as well as the requirements of urban ecological construction and sustainable development.
本发明公开了一种复合胶凝材料煤矸石透水混凝土由下列物料按照重量份数组合而成：普通水泥200‑320份，活性矿物掺合料80‑200份，萘系或聚羧酸减水剂2‑4份，水120份，煤矸石骨料1390份。制备方法步骤如下：（1）将煤矸石经过破碎筛选后，片状和针状颗粒含量不超过15%，选择粒径为5‑10mm的煤矸石作为粗骨料；（2）将按重量份数配比称量好的煤矸石骨料、水泥、矿物掺合料搅拌均匀，然后加水搅拌，再加入减水剂，搅拌均匀后制成透水混凝土。本发明采用复合胶凝材料、煤矸石骨料配制透水混凝土，能够改善混凝土的强度和耐久性，矿物掺合料在一定掺量范围内，透水混凝土28d强度、抗冻性能、抗碳化能力均有所提升；利用煤矸石、粉煤灰等工业固废制备透水混凝土，既消耗了固废、节约了资源，又减少了污染、保护了环境，还能使混凝土材料符合绿色建筑材料的发展要求，满足城市生态建设和可持续发展的需要。
Composite cementing material coal gangue pervious concrete and preparation method thereof
一种复合胶凝材料煤矸石透水混凝土及其制备方法
ZHU KAI (author) / ZHANG LIMING (author) / MA XIANWEI (author) / TIAN YE (author) / FAN ZHEZHE (author)
2020-12-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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