摘要
实际工程中常使用粉煤灰替代硅灰,可以有效改善透水混凝土的力学性能和透水性能。为分析粉煤灰掺量对透水混凝土和岩质边坡防护的具体影响,在分析透水混凝土配合比的基础上,对比不同粉煤灰掺量下混凝土的性能情况。研究结果显示:粗骨料粒径为10 mm~15 mm、粉煤灰替代率为10%或20%时,制备出的透水混凝土满足设计需求;对不同配比方案进行数值模拟,粉煤灰替代率为20%时岩质边坡的稳定性高于粉煤灰替代率为10%的加固处理;使用10 mm~15 mm粗骨料粒径和20%粉煤灰替代率的锚喷植生透水混凝土可有效实现对岩质边坡的防护。该结论可为岩质边坡防护理论工作提供一定参考。
In practical engineering,fly ash is often used instead of silica fume,which can effectively improve the mechanical properties and water permeability of pervious concrete.In order to analyze the specific influence of fly ash content on pervious concrete and rock slope protection,based on the analysis of pervious concrete mix ratio,the performance of concrete with different fly ash content is compared.The research results show that when the coarse aggregate particle size is 10 mm~15 mm and the fly ash replacement rate is 10%or 20%,The prepared pervious concrete meets the design requirements;The results of numerical simulation show that the stability of rock slope with 20%fly ash replacement ratio is higher than that with 10%fly ash replacement ratio.Shotcrete with 10 mm~15 mm coarse aggregate particle size and 20%fly ash replacement ratio can effectively protect rock slope.The conclusion can provide a certain reference for the theoretical work of rock slope protection.
作者
高熙贺
GAO Xihe(Traffic and Surveying Engineering Branch of Yangling Vocational and Technical College,Yangling 712100,China)
出处
《粉煤灰综合利用》
CAS
2021年第6期80-85,共6页
Fly Ash Comprehensive Utilization
关键词
粉煤灰
数值分析
岩质边坡
锚喷植生
透水混凝土
fly ash
numerical analysis
rock slope
anchor spray planting
permeable concrete
