摘要
为研究粉煤灰对透水混凝土的影响作用,通过在透水混凝土中加入粉煤灰,利用裹石法制作透水混凝土,研究了粉煤灰对透水混凝土抗压强度、抗折强度、孔隙率和透水系数的影响作用。结果表明:粉煤灰的掺入对透水混凝土的性能有明显的影响,抗压强度先降低后增高,粉煤灰掺量为20%的时候抗压强度达到最大值19.6 MPa,随着粉煤灰掺量的继续增加,抗压强度值又逐渐减小;粉煤灰掺量为20%的时候抗折强度达到最大值,说明粉煤灰的最佳掺量在20%左右;随着粉煤灰掺量的增加,孔隙率和透水系数都逐渐减低,早期降低的速率大,后期降低的速率小。
In order to study the effect of fly ash on permeable concrete,the permeable concrete was prepared by adding fly ash to the permeable concrete,and the effect of fly ash on compressive strength,flexural strength,porosity and permeability of permeable concrete was investigated.The results showed that adding fly ash had significant effect on the performance of permeable concrete.The compressive strength decreased first and then increased.When the fly ash content was 20%,the compressive strength reached the maximum value of 19.6 MPa;With the continues increase of ash content,the compressive strength value decreased gradually.When the fly ash content was 20%,the flexural strength reached the maximum value,indicating that the optimum blending amount of fly ash is about 20%.With the increase of coal ash content,the porosity and permeability coefficient gradually reduced,the rate of early reduction was large,and the rate of late reduction was small.
作者
贾小妮
JIA Xiao-ni(Department of Engineering,Xi'an International University,Shaanxi Xi'an 710077,China)
出处
《当代化工》
CAS
2019年第12期2742-2745,共4页
Contemporary Chemical Industry
基金
陕西省教育厅项目,项目编号:19JK0723.
关键词
粉煤灰
透水混凝土
强度
孔隙率
透水系数
Fly ash
Permeable concrete
Strength
Porosity
Permeability coefficient
作者简介
贾小妮(1982-),女,陕西西安人,讲师,硕士,2008年毕业于西安建筑科技大学管理科学与工程专业,研究方向:工程管理及智能建筑材料。E-mail:54619845@qq.com。
