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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage pumpable heavy concrete and preparation method thereof
The invention discloses low-shrinkage pumpable heavy concrete which comprises the following components: 280-340 kg/m < 3 > of cement, 0-40 kg/m < 3 > of coal ash, 0-60 kg/m < 3 > of mineral powder, 250-400 kg/m < 3 > of modified high-titanium heavy slag sand, 1000-1300 kg/m < 3 > of barite sand, 0-500 kg/m < 3 > of barite, 1000-1740 kg/m < 3 > of hematite, 30-50 kg/m < 3 > of an expanding agent, 10-12 kg/m < 3 > of a water reducing agent and 140-145 kg/m < 3 > of water. The modified high-titanium heavy slag sand is obtained by mixing and stirring high-titanium heavy slag sand and super absorbent resin and then adsorbing a sodium monofluorophosphate solution. According to the low-shrinkage pumpable heavy concrete, on the premise that good pumping performance is guaranteed, the problems of shrinkage cracking and the like of the concrete can be greatly solved, the uniformity, the mechanical property and the like of the heavy concrete are remarkably improved, and the low-shrinkage pumpable heavy concrete is suitable for application and popularization.
本发明公开了一种低收缩可泵性重混凝土，各组分及其用量包括：水泥280～340kg/m3，粉煤灰0～40kg/m3，矿粉0～60kg/m3，改性高钛重矿渣砂250～400kg/m3，重晶石砂1000～1300kg/m3，重晶石0～500kg/m3，赤铁矿1000～1740kg/m3，膨胀剂30～50kg/m3，减水剂10～12kg/m3，水140～145kg/m3；所述改性高钛重矿渣砂将高钛重矿渣砂与高吸水树脂混合搅拌，然后吸附单氟磷酸钠溶液得到。本发明所述低收缩可泵性重混凝土可在保证良好泵送性能的前提下，大幅降低混凝土收缩开裂等问题，并显著提升重混凝土的均匀性和力学性能等，适合推广应用。
Low-shrinkage pumpable heavy concrete and preparation method thereof
The invention discloses low-shrinkage pumpable heavy concrete which comprises the following components: 280-340 kg/m < 3 > of cement, 0-40 kg/m < 3 > of coal ash, 0-60 kg/m < 3 > of mineral powder, 250-400 kg/m < 3 > of modified high-titanium heavy slag sand, 1000-1300 kg/m < 3 > of barite sand, 0-500 kg/m < 3 > of barite, 1000-1740 kg/m < 3 > of hematite, 30-50 kg/m < 3 > of an expanding agent, 10-12 kg/m < 3 > of a water reducing agent and 140-145 kg/m < 3 > of water. The modified high-titanium heavy slag sand is obtained by mixing and stirring high-titanium heavy slag sand and super absorbent resin and then adsorbing a sodium monofluorophosphate solution. According to the low-shrinkage pumpable heavy concrete, on the premise that good pumping performance is guaranteed, the problems of shrinkage cracking and the like of the concrete can be greatly solved, the uniformity, the mechanical property and the like of the heavy concrete are remarkably improved, and the low-shrinkage pumpable heavy concrete is suitable for application and popularization.
本发明公开了一种低收缩可泵性重混凝土，各组分及其用量包括：水泥280～340kg/m3，粉煤灰0～40kg/m3，矿粉0～60kg/m3，改性高钛重矿渣砂250～400kg/m3，重晶石砂1000～1300kg/m3，重晶石0～500kg/m3，赤铁矿1000～1740kg/m3，膨胀剂30～50kg/m3，减水剂10～12kg/m3，水140～145kg/m3；所述改性高钛重矿渣砂将高钛重矿渣砂与高吸水树脂混合搅拌，然后吸附单氟磷酸钠溶液得到。本发明所述低收缩可泵性重混凝土可在保证良好泵送性能的前提下，大幅降低混凝土收缩开裂等问题，并显著提升重混凝土的均匀性和力学性能等，适合推广应用。
Low-shrinkage pumpable heavy concrete and preparation method thereof
一种低收缩可泵性重混凝土及其制备方法
YUAN WENTAO (author) / ZHANG YUAN (author) / LU JIALIN (author) / LAN CONG (author) / ZHANG WUZONG (author) / LIU DONG (author) / ZHU YONGCHAO (author) / WANG ZONGHAO (author) / WANG ZIJIE (author) / LIU XIA (author)
2023-10-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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