| Title |
The Flexural Behaviour of Reinforced Concrete Beams with Precast Light Weight Concrete Formwork |
| Authors |
Jeong Byung-Joo ; Hong Kap-Pyo ; Ha Sang-Woon |
| Keywords |
Precast Light Weight Concrete Form ; Pearlite Aggregate ; Infilled Concrete |
| Abstract |
Light weight concrete is about one half the weight of hard structural concrete. It can be mixed from a variety of light weight aggregates including vermiculite, perlite, scoria, and pumice. Structural lightweight concrete has strengths comparable to normal weight concrete, yet is typically 25% to 35% lighter. This study explores reinforced concrete beams with lightweight precast concrete form. Infilled concrete may often refer to strengths equal or greater than 22N/mm2. The scope of this study includes two general topics. The first is a summary of pertinent literature on application of lightweight concrete in form applications. The results indicate a number of successful applications as well as a few cautions. The second topic outlines in detail the development of 20N/mm2 and mixes using locally available materials and mixing practices suitable for local precasting plants. The use of three type lightweight aggregate in concrete as a partial replacement of granite aggregate has been examined and compared. The lightweight concrete specimen so produced is light in nature (up to 14% reduction in unit weight) and the development of such concrete with sintered aggregate minimises the consumption of granite rock. The Investigation was conducted to determine the bond characteristic of deformed bar embedded in light-weight concrete with thin concrete coverage. |