灌浆料抗裂措施研究及应用

Studies on Anti-cracking Measures and Application

通过研究粉煤灰等掺合料对灌浆加固材料的水化热、体积稳定性和抗裂性能的影响,结果表明掺加粉煤灰的灌浆材料早期竖向膨胀率增加、长期干燥收缩率大幅度降低,根据实验室提供的数据,指导现场进行小截面、大面积灌浆料浇筑研究,以及开展施工。

Based on experimental studies of admixtures such as fly ash's influence on hydration heat,volume stability,crack resistance of grouting materials.The data provided by the laboratory demonstrates that vertical expansion rate of grouting material added with fly ash increases in the early stage,and the long-term shrinkage rate radically reduces.The experimental data instructed extensive on-site casting research and construction.