Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-strength low-drying-shrinkage full-coal-gangue aggregate cement mortar and preparation method thereof
The invention provides high-strength low-drying-shrinkage full-coal-gangue aggregate cement mortar. The cement mortar is prepared from calcined coal gangue fine aggregate or calcined coal gangue composite fine aggregate, P.II52.5 Portland cement, a polycarboxylic acid water reducing agent and water. The invention further provides a preparation method. The preparation method comprises the following steps: stirring and mixing water and cement to obtain cement paste; and adding the calcined coal gangue fine aggregate or the calcined coal gangue composite fine aggregate into the cement paste in two times, conducting stirring, vibrating and molding, performing pre-curing for 24 hours, removing a mold, and conducting curing with water to obtain the high-strength low-drying-shrinkage full-coal gangue aggregate cement mortar. The full-coal-gangue aggregate cement mortar disclosed by the invention is high in compressive strength and breaking strength, compact in mortar matrix, good in interface bonding and excellent in drying shrinkage resistance, the problems of low strength, large drying shrinkage and the like of the traditional coal gangue aggregate cement mortar can be solved, and resource utilization of coal gangue and preparation of the high-performance full-coal-gangue aggregate cement mortar are realized.
本发明提供了一种高强低干燥收缩全煤矸石骨料水泥砂浆，由煅烧煤矸石细骨料或者煅烧煤矸石复合细骨料、P.Ⅱ52.5硅酸盐水泥、聚羧酸减水剂和水制成，还提供了制备方法：将水和水泥搅拌混合得到水泥净浆，然后将煅烧煤矸石细骨料或者煅烧煤矸石复合细骨料分2次加入至所述水泥净浆中，经搅拌、振捣成型、预养24h后拆模、水养，得到高强低干燥收缩全煤矸石骨料水泥砂浆。本发明的全煤矸石骨料水泥砂浆抗压和抗折强度高、砂浆基体密实、界面结合好、抗干燥收缩性能优，可克服传统煤矸石骨料水泥砂浆强度低、干燥收缩大等问题，实现煤矸石资源化利用及高性能全煤矸石骨料水泥砂浆的制备。
High-strength low-drying-shrinkage full-coal-gangue aggregate cement mortar and preparation method thereof
The invention provides high-strength low-drying-shrinkage full-coal-gangue aggregate cement mortar. The cement mortar is prepared from calcined coal gangue fine aggregate or calcined coal gangue composite fine aggregate, P.II52.5 Portland cement, a polycarboxylic acid water reducing agent and water. The invention further provides a preparation method. The preparation method comprises the following steps: stirring and mixing water and cement to obtain cement paste; and adding the calcined coal gangue fine aggregate or the calcined coal gangue composite fine aggregate into the cement paste in two times, conducting stirring, vibrating and molding, performing pre-curing for 24 hours, removing a mold, and conducting curing with water to obtain the high-strength low-drying-shrinkage full-coal gangue aggregate cement mortar. The full-coal-gangue aggregate cement mortar disclosed by the invention is high in compressive strength and breaking strength, compact in mortar matrix, good in interface bonding and excellent in drying shrinkage resistance, the problems of low strength, large drying shrinkage and the like of the traditional coal gangue aggregate cement mortar can be solved, and resource utilization of coal gangue and preparation of the high-performance full-coal-gangue aggregate cement mortar are realized.
本发明提供了一种高强低干燥收缩全煤矸石骨料水泥砂浆，由煅烧煤矸石细骨料或者煅烧煤矸石复合细骨料、P.Ⅱ52.5硅酸盐水泥、聚羧酸减水剂和水制成，还提供了制备方法：将水和水泥搅拌混合得到水泥净浆，然后将煅烧煤矸石细骨料或者煅烧煤矸石复合细骨料分2次加入至所述水泥净浆中，经搅拌、振捣成型、预养24h后拆模、水养，得到高强低干燥收缩全煤矸石骨料水泥砂浆。本发明的全煤矸石骨料水泥砂浆抗压和抗折强度高、砂浆基体密实、界面结合好、抗干燥收缩性能优，可克服传统煤矸石骨料水泥砂浆强度低、干燥收缩大等问题，实现煤矸石资源化利用及高性能全煤矸石骨料水泥砂浆的制备。
High-strength low-drying-shrinkage full-coal-gangue aggregate cement mortar and preparation method thereof
一种高强低干燥收缩全煤矸石骨料水泥砂浆及其制备方法
WANG AIGUO (Autor:in) / ZHU YUANYUAN (Autor:in) / SUN DAOSHENG (Autor:in) / LIU KAIWEI (Autor:in) / XU HAIYAN (Autor:in) / GUAN YANMEI (Autor:in) / DONG WEIWEI (Autor:in) / HAO FAJUN (Autor:in) / HUANG MENG (Autor:in) / YANG XUELEI (Autor:in)
15.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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Coal gangue masonry mortar and preparation method thereof
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