Papers by Author: Liang Peng Deng

Abstract: Reactive powder concrete (RPC) is a new kind of material with very high mechanical behavior and durability, however, high cost and complex procedure to make RPC result in hardly apply to engineering in large scale. a new low-cost RPC that compressive strength exceeds 130MPa was prepared with the replacement of quartz sand, crushed quartz and partial of silica fume by fly ash, slag and natural fine aggregate in the paper. Manhole cover that made from the low-cost RPC can meets the requirements of different situations, such as special road, motorway, etc.

Abstract: Reactive powder concrete (RPC), which is a new cement-based composite material with ultra-high strength, low-brittleness, excellent durability, is adopted to make well covers. In addition, static loading tests of the well covers are carried out. The test results show that the loading capacity of the RPC well covers can meet the requirements for different situations, such as the special roads, the city motorway, footway, various parking places, etc.

Abstract: Based on experiments, the effect of various types and content of mineral admixtures and steel fiber on flexural strength and compressive strength of reactive powder concrete (RPC) have been studied. The low-cost green RPC is made with the replacement of quartz sand, quartz powder and partial silica fume by natural fine aggregate and fly ash. The preparation techniques of RPC was also improved.