摘要
Abstract
In order to reduce the rebound rate of shotcrete,the rebound inhibitor was prepared by lithium slag,silica ash,cellulose ether and calcium formate.The effects on slump,compressive strength and resilience of shotcrete as well as the adaptability of the accelerator are stud-ied.The results show that with the increase of the content of rebound inhibitor,the slump of concrete gradually decreases,and the initial and final setting time both gradually extend.The 7 d compressive strength and 28 d compressive strength of concrete first increase and then decrease with the increase of rebound inhibitor,and the compressive strength is the highest when the dosage is 3%.The rebound rate of concrete de-creases gradually with the increase of the addition of rebound inhibitor.When the addition rate is 5%,the rebound rate of concrete is 50%of the reference sample.关键词
回弹抑制剂/喷射混凝土/坍落度/速凝剂适应性/抗压强度/回弹率Key words
Rebound inhibitor/Shotcrete/Alump/Accelerator adaptability/Compressive strength/Rebound rate分类
建筑与水利
