掺合料对轻集料混凝土抗渗性的影响  

IMPERMEABILITY AND PORE STRUCTURE OF LWA CONCRETE WITH MINERAL ADMIXTURE

作　　者：郑秀华[1] 杨文萃[1] 蔡小平[1] 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,哈尔滨150090

出　　处：《低温建筑技术》2013年第3期1-3,共3页Low Temperature Architecture Technology

基　　金：黑龙江省交通厅重点科技项目(MH20060051)

摘　　要：研究了单掺粉煤灰及粉煤灰、沸石粉、硅粉复掺对轻集料混凝土抗渗性与孔结构的影响,并将轻集料混凝土抗渗性与普通混凝土做了对比。结果表明,掺加矿物掺合料轻集料混凝土将获得更高的抗渗性;复掺对轻集料混凝土抗渗性更有利;轻集料混凝土抗渗性优于相同强度等级普通混凝土;LC40轻集料混凝土抗渗性与C60普通混凝土抗渗性相当。掺加矿物掺合料能明显改善轻集料混凝土的孔结构,小孔增多,总孔隙率降低。The experimental research of impermeability and pore structure of light aggregate concrete was carried out , with the single mixing fly ash and composite addition of mineral admixture（ fly ash, zeolite powder, silicon powder） and ordinary concrete are compared. The results show that adding mineral admixture light-weight aggregate concrete will get higher impermeability; impermeability of light-tweight aggregate concrete is more advantageous ; impermeability of light-weight aggregate concrete is better than that of the same strength grade ordinary concrete ; LC40 light-weight aggregate concrete impermeability is the common concrete quite. Adding mineral admixture can obviously improve pore structure of the light-weight aggregate concrete, small pore increased, the total porosity reduce.

关 键 词：轻集料混凝土 粉煤灰 沸石粉 硅粉 

分 类 号：TU528.041[建筑科学—建筑技术科学]