摘要
通过加速试验方法研究了粉煤灰混凝土抗压强度、劈裂强度和弹性模量随溶蚀时间的退化规律。在该试验中,粉煤灰掺量分别为0、10%、20%、30%。试验结果表明,粉煤灰混凝土的抗压强度、劈裂强度和弹性模量均随着溶蚀时间的延长而下降。在混凝土中加入一定量的粉煤灰,可以减小混凝土强度和弹性模量的下降率,当粉煤灰掺量为20%时,效果最佳。对于给定的溶蚀时间,粉煤灰混凝土的溶蚀深度低于普通混凝土的溶蚀深度,而且加入粉煤灰可以明显减小溶蚀混凝土中大孔的数量。
An accelerated test method is adopted to study the degradation of compressive strength, splitting strength, and elastic modulus of fly-ash concrete With leaching time.In this test, the amount of fly ash is 0, 10%,20%, and 30%, respectively.The experimental results show that the compressive strength, splitting strength, and elastic modulus of fly-ash concrete all decrease with the increase of leaching time.When an appropriate amount of fly ash is added to concrete, the percentage decrease of the strength and elastic modulus is reduced. When the amount of fly ash is 20% ,the optimal effect is achieved.For a given leaching time,the leaching depth of fly-ash concrete is smaller than that of ordinary concrete and adding fly ash to concrete can obviously decrease the amount ofbigger pores.
出处
《混凝土》
CAS
北大核心
2018年第1期1-4,共4页
Concrete
基金
国家自然科学基金(51379188)
浙江省自然科学基金(LY15E090006)
浙江省科技计划项目(2016C33106)
关键词
溶蚀混凝土
粉煤灰
抗压强度
劈裂强度
弹性模量
leached concrete
fly ash
compressive strength
splitting strength
elastic modulus
