【摘 要】
：
本文研究了环境湿度对掺加粉煤灰和硅灰等活性矿物掺合料的玻璃纤维增强水泥砂浆(GRC)力学性能的影响。在温度为60℃,相对湿度为75％,85％,95％等三个不同环境湿度下,分别测定
【机 构】
：
哈尔滨工程大学航天与建筑工程学院,哈尔滨150001
【出 处】
：
第二届中国国际复合材料科技大会 (CCCM-2)
论文部分内容阅读
本文研究了环境湿度对掺加粉煤灰和硅灰等活性矿物掺合料的玻璃纤维增强水泥砂浆(GRC)力学性能的影响。在温度为60℃,相对湿度为75％,85％,95％等三个不同环境湿度下,分别测定在0d,3d,14d,28d,56d不同龄期时试件的抗折强度、抗压强度和基体PH值。研究表明环境湿度对GRC试件的抗折强度有重要影响,相对湿度越大GRC试件的抗折强度降低越严重；掺有40％粉煤灰、10％硅灰的GRC试件其抗折强度随时间逐渐增加,抗压强度增加较缓慢；没有掺加粉煤灰和硅灰的GRC试件的抗折强度随时间逐渐减低,抗压强度增加不明显。
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