Cement and recycled concrete for pavement improved the mechanical properties of lake sediment

Abstract

Abstract
This research purpose was to study the cement and recycled concrete for pavement improved the mechanical properties of lake sediment. The sediment which used in this research is from Kwan Phayao (Phayao lake), gained by digging at the surface in the dumping areas around the lake and the solder materials were the ordinary Portland cement and recycled concrete from the building demolition. The way of soil improvement was mixing the sediment with cement in ratio as 0%, 3%, 5%, 7%, and 10% and the volume of recycled concrete in ratio as 0%, 5%, 10%, 15% and 20% upon the soil weight. The preparation of each mixture was in the appropriate humidity and the driest density from compaction test higher than the standard. The samples were prepared in the molds with diameter 2 inches and height 4 inches. Then, mature at 7, 14, and 28 days. As the maturity in defined periods, the samples were bought into unconfined compression test. Finally, this research is going to present the appropriate ratio of sediment and the ordinary Portland cement and recycled concrete for applying in highway engineering later.