Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early-strength and high-impermeability lining concrete and preparation method thereof
The invention relates to early-strength and high-impermeability lining concrete and a preparation method thereof. The early-strength and high-impermeability lining concrete is prepared from cement, fly ash microspheres, machine-made sand, gravel, an impermeable functional material, an early strength agent, a polycarboxylic acid high-efficiency water reducing agent, a mud blocking agent and water.According to the invention, waste limestone powder and kaolin are subjected to composite modification, the prepared impermeable functional material can improve the impermeability of a lining to avoidcorrosion of a reinforcing mesh, the hydration temperature rise of concrete can be reduced after limestone powder replaces part of cement, and due to the fact that the high-activity fly ash microspheres, the ball effect and the micro-aggregate effect are adopted, the workability and compactness of the concrete are enhanced, and the homogeneity of the concrete is improved. According to the early-strength and high-impermeability lining concrete and the preparation method thereof, high-mud-content machine-made sand can be adopted to replace natural river sand, and the prepared early-strength andhigh-impermeability lining concrete is excellent in working performance, mechanical performance, volume stability and crack resistance.
本申请涉及一种早强高抗渗衬砌混凝土及其制备方法，该早强高抗渗衬砌混凝土由水泥、粉煤灰微珠、机制砂、碎石、抗渗功能材料、早强剂、聚羧酸类高效减水剂、阻泥剂和水制备而成。本申请通过对废弃石灰石粉及高岭土进行复合改性，制备出的抗渗功能材料可以提高衬砌抗渗性以避免钢筋网锈蚀，且石灰石粉替代部分水泥后可降低混凝土的水化温升，由于本申请采用了高活性的粉煤灰微珠，其滚珠效应和微集料效应，增强了混凝土的工作性和密实性，改善其均质性。本申请可采用高含泥量机制砂代替天然河砂，制备的早强高抗渗衬砌混凝土的工作性能、力学性能、体积稳定性能及抗裂性能优异。
Early-strength and high-impermeability lining concrete and preparation method thereof
The invention relates to early-strength and high-impermeability lining concrete and a preparation method thereof. The early-strength and high-impermeability lining concrete is prepared from cement, fly ash microspheres, machine-made sand, gravel, an impermeable functional material, an early strength agent, a polycarboxylic acid high-efficiency water reducing agent, a mud blocking agent and water.According to the invention, waste limestone powder and kaolin are subjected to composite modification, the prepared impermeable functional material can improve the impermeability of a lining to avoidcorrosion of a reinforcing mesh, the hydration temperature rise of concrete can be reduced after limestone powder replaces part of cement, and due to the fact that the high-activity fly ash microspheres, the ball effect and the micro-aggregate effect are adopted, the workability and compactness of the concrete are enhanced, and the homogeneity of the concrete is improved. According to the early-strength and high-impermeability lining concrete and the preparation method thereof, high-mud-content machine-made sand can be adopted to replace natural river sand, and the prepared early-strength andhigh-impermeability lining concrete is excellent in working performance, mechanical performance, volume stability and crack resistance.
本申请涉及一种早强高抗渗衬砌混凝土及其制备方法，该早强高抗渗衬砌混凝土由水泥、粉煤灰微珠、机制砂、碎石、抗渗功能材料、早强剂、聚羧酸类高效减水剂、阻泥剂和水制备而成。本申请通过对废弃石灰石粉及高岭土进行复合改性，制备出的抗渗功能材料可以提高衬砌抗渗性以避免钢筋网锈蚀，且石灰石粉替代部分水泥后可降低混凝土的水化温升，由于本申请采用了高活性的粉煤灰微珠，其滚珠效应和微集料效应，增强了混凝土的工作性和密实性，改善其均质性。本申请可采用高含泥量机制砂代替天然河砂，制备的早强高抗渗衬砌混凝土的工作性能、力学性能、体积稳定性能及抗裂性能优异。
Early-strength and high-impermeability lining concrete and preparation method thereof
一种早强高抗渗衬砌混凝土及其制备方法
CHEN LUYI (Autor:in) / LI XINHUA (Autor:in) / BAO JIACHENG (Autor:in) / LI JIANDONG (Autor:in) / YANG SHENGMIN (Autor:in) / WANG YAZHOU (Autor:in) / LIU QINMEI (Autor:in)
11.08.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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