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A platform for research: civil engineering, architecture and urbanism
Application of dust collection stone powder in concrete
The invention discloses application of dust collection stone powder in concrete, and relates to the technical field of preparation of cement concrete, the dust collection stone powder is prepared from cement with 28-day compressive strength of 55.13 MPa, dust collection stone powder with MB value of 1.25 and fineness of 6.1%, machine-made sand with density of 2.72 g/cm < 3 > and fineness modulus of 2.8, gravel with 5-25 mm and 0-5 mm in a compounding ratio of 7: 3, secondary fly ash and a polycarboxylic acid high-performance water reducing agent, the water reducing rate of the polycarboxylic acid high-performance water reducing agent is 22%, the solid content is 8.5%, the fly ash is secondary fly ash, and the dust collection stone powder replaces the secondary fly ash to be doped into the concrete. When the dust-collecting stone powder is applied to concrete, the surface of the dust-collecting stone powder is smooth, so that the ball effect of the dust-collecting stone powder can be fully exerted, the flowability of cement paste is improved, and a water reducing effect is achieved. The different doping modes of the dust collection stone powder can better fill and optimize the pore structure of the hardened concrete, and the uniformity of the fresh concrete is improved.
本发明公开了一种收尘石粉在混凝土中的应用，涉及水泥混凝土的制备技术领域，包括28天抗压强度为55.13MPa的水泥，MB值为1.25，细度为6.1%的收尘石粉，密度为2.72g/cm3，细度模数为2.8的机制砂，5mm‑25mm和0mm‑5mm碎石复配比例为7：3，二级粉煤灰和聚羧酸高性能减水剂，聚羧酸高性能减水剂减水率为22%，固含量为8.5%，粉煤灰为二级粉煤灰，将收尘石粉代替二级粉煤灰掺入混凝土中。该收尘石粉在混凝土中的应用，通过收尘石粉表面光滑，能够充分发挥本身的滚珠效应，增加水泥净浆的流动性，起到减水的作用。收尘石粉的不同掺入方式可以更好的填充和优化硬化后混凝土的孔隙结构，提高新拌混凝土的均一性。
Application of dust collection stone powder in concrete
The invention discloses application of dust collection stone powder in concrete, and relates to the technical field of preparation of cement concrete, the dust collection stone powder is prepared from cement with 28-day compressive strength of 55.13 MPa, dust collection stone powder with MB value of 1.25 and fineness of 6.1%, machine-made sand with density of 2.72 g/cm < 3 > and fineness modulus of 2.8, gravel with 5-25 mm and 0-5 mm in a compounding ratio of 7: 3, secondary fly ash and a polycarboxylic acid high-performance water reducing agent, the water reducing rate of the polycarboxylic acid high-performance water reducing agent is 22%, the solid content is 8.5%, the fly ash is secondary fly ash, and the dust collection stone powder replaces the secondary fly ash to be doped into the concrete. When the dust-collecting stone powder is applied to concrete, the surface of the dust-collecting stone powder is smooth, so that the ball effect of the dust-collecting stone powder can be fully exerted, the flowability of cement paste is improved, and a water reducing effect is achieved. The different doping modes of the dust collection stone powder can better fill and optimize the pore structure of the hardened concrete, and the uniformity of the fresh concrete is improved.
本发明公开了一种收尘石粉在混凝土中的应用，涉及水泥混凝土的制备技术领域，包括28天抗压强度为55.13MPa的水泥，MB值为1.25，细度为6.1%的收尘石粉，密度为2.72g/cm3，细度模数为2.8的机制砂，5mm‑25mm和0mm‑5mm碎石复配比例为7：3，二级粉煤灰和聚羧酸高性能减水剂，聚羧酸高性能减水剂减水率为22%，固含量为8.5%，粉煤灰为二级粉煤灰，将收尘石粉代替二级粉煤灰掺入混凝土中。该收尘石粉在混凝土中的应用，通过收尘石粉表面光滑，能够充分发挥本身的滚珠效应，增加水泥净浆的流动性，起到减水的作用。收尘石粉的不同掺入方式可以更好的填充和优化硬化后混凝土的孔隙结构，提高新拌混凝土的均一性。
Application of dust collection stone powder in concrete
一种收尘石粉在混凝土中的应用
WANG LEI (author) / WANG YAN (author) / HE TINGSHU (author) / CHANG XIULONG (author) / ZHAO LELE (author) / CAO JIA (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Application of collected dust stone powder in concrete as cementing material
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