摘要
研究内掺风积沙代替相同质量普通砂的风积沙水泥砂浆在盐溶液下进行快速冻融循环试验,达到一定冻融次数后分析强度、质量损失和相对动弹模量的变化情况及变化规律。结果表明:掺适量风积沙可提高砂浆抗冻性能。为解释掺风积沙提高砂浆抗冻性能原因,进行了电镜扫描试验和气泡特征参数测试,由试验得出:掺适量风积沙可以改善砂浆微观结构和气泡结构。
By mixing mass fraction of aeolian sand to replace the same weight of river sand to configure cement mortar,which carried out rapid freeze-thaw cycle test in saline solution. The change range and change law of compressive strength,mass loss,relative dynamic elastic modulus were analyzed after the certain freeze-thaw times. Results show： adding moderate aeolian sand can improve frost resistance of mortar. In order to explain the reasons for the improvement of frost resistance of mortar,We performed scanning electron microscopic experiment and air void characteristic parameters testing. The tests indicated： adding moderate aeolian sand can improve the microstructure and air void structure of mortar.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2016年第4期1159-1163,1183,共6页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金资助项目(51569021)
高等学校博士学科点专项科研基金(20121515110002)
内蒙古自治区应用与研究开发科技计划项目(20130425)
关键词
风积沙水泥砂浆
抗冻性
电镜扫描
气泡特征参数
aeolian sand cement mortar
frost resistance
scanning electron microscope
air void characteristic parameters
