Mechanical and durability properties of sintered fly ash aggregate concrete

Abstract

Conservation of natural resources and effective management of waste materials that can harm our environment is a challenging phenomenon. This paper is focused to study the different properties of M30 grade concrete where the coarse aggregate has been completely replaced by commercially available sintered fly ash aggregate and it has proved to meet the target strength. To further improve the crack resisting behavior and tensile strength,basalt fibers was incorporated. The incorporation of fibers has improved the mechanical properties to around 3-4%. The RCPT and water absorption test has proved that the durability properties of sintered fly ash aggregate are within the standard specified.

Effects of cement as a substitute binder on strength and durability of fly ash–rice husk ash geopolymer concrete

“…Wang et al 33 worked on FA-OPC paste and discovered that C S H gel was mainly responsible for the strength increase and matrix structure hardening. Similar findings were reported in this study, as C S H gel formation due to OPC inclusion According to Nonat, 34 C S H gel formed a nanoparticle framework, improving the pore structure of the concrete matrix, resulting in densification and higher strength. The results of the above studies supported the results of the current research and the observed compressive strength shows that GPC with higher compressive strength can also be achieved by using a mixture binder consisting of RHA, FA, and OPC.…”