查看文章

Many researches have been carried out on production and properties of pre-cast concretes. Currently, most of them have focused on normal concrete, and are unable to completely represent the behavior of lightweight concrete (LWC). In this study, physical and mechanical properties of LWC produced with diatomite and pumice lightweight aggregates after autoclave curing were investigated. In the production of LWC, 0–4mm maximum sizes of aggregates were used. Cement content and water/cement ratio were kept at 300kg/m³ and 0.20, respectively. The specimens were prepared in ∅50×100mm cylindrical shape, and after 24h of demoulding exposed to autoclave curing for 2, 4, 6, 8 and 10h. Besides, two different cures were applied on the specimens as in water and in air at 20°C±2, respectively. At the end of autoclaving and environmental cure, compressive strength in 7, 28 and 590d, unit weight, specific …