期刊论文

Study on Electrical Resistivity and Chloride Ion Permeability of High-Performance Lightweight Aggregate Concrete(HPLWC)

Huang, Z.-L.

中文

建筑材料学报

Journal of Building Materials

1007-9629

2005

8

4

341-348

10.3969/j.issn.1007-9629.2005.04.001

本校为第一机构

由于传统轻骨料吸水率高及连通孔洞多,而传统轻骨料混凝土又使用大量的水泥及水,因此在台湾的海洋性气候所形成的盐雾侵蚀环境下,传统轻骨料混凝土在达到隔热效果的同时却降低了其耐久性能,并对混凝土结构物的服务寿命也造成了影响.采用低吸水率的淤泥轻骨料,并通过致密配比设计,制成了高流动度、高性能的轻骨料混凝土(HPLWC);以3种水胶比(0.28,0.32,0.40)及3种用水量(140,150,160 kg/m3),探讨了水泥浆的质与量对高性能轻骨料混凝土耐久性能的影响.对混凝土试件730 d龄期的测量结果显示,各组轻骨料混凝土可同时达到具有足够强度、高流动度、高电阻率(在91 d及730 d可分别达到33～82 kΩ·cm及13...

Owing to high salt concentration in marine environment in Taiwan and large water absorption capacity of light weight aggregate (LWA), ordinary LWC is vulnerable to be damaged; and due to high cement and water content in ordinary LWC its durability will be affected although concrete cover properly protects reinforced bar and therefore, long-term service life of building structure is affected. In this investigation, low-water absorption LWA from fine sediment is selected and a high packing density mixture design is chosen to produce LWC to achiev...