【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。
其他文献
The use of extemally bonded carbon fiber reinforced polymer (CFRP) to strengthen deficient reinforced concrete columns has gained in popularity and has beco
As a new kind of building materials, Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) exhibits superior compressive and tensile mechanical behavior
Fiber-reinforced Polymer(FRP) Confined Concrete Columns (FCCC) have superior axial compressive capacity and ductility.It is difficult to make a comprehensiv
The development of membrane structure is closely related with and the research and application of membrane materials.With the development of materials scien
In pile foundation engineering, the non-autoclaved technique of PHC pipe piles has been a development tendency, and mineral admixtures are important raw mat
Portland cement (PC) concrete suffers from the attack of the salty and severe environment in ocean engineering.Alkali-activated slag (AAS) is one of the pot
Reinforcement of both textile and short fibers is a high efficiency and novel strengthening technique, which can greatly improve the flexural behavior and t
High drying shrinkage is one of the key characteristics that restrict the application of alkali activated slag (AAS) in civil engineering.It is found that t
对建筑用PTFE(聚四氟乙烯)膜材进行了5种温度(23℃,40℃,50℃,60℃,70℃)下的单轴应力松弛试验,考虑了不同初始拉伸速度(5N/s,10N/s,20N/s)对于膜材应力松弛性能的影响,
从应急交通保障需求入手,在分析固化剂加固松软土壤现状的基础上,提出了利用新型水下环氧树脂固化剂快速固化松软沙滩的新思路,并对水下环氧树脂固化剂快速加固松软沙滩的强