Ultra-Fine Treated and Untreated Walnut Shell Ash Incorporated Cement Mortar: Properties and Environmental Impact Assessments

The utilization of walnut shell (WS) as partial replacement aggregates and cement is getting more attention in modern research on construction material. Though WS provides lightweight concrete, but less compressive strength porous structure concrete still problematic for its utilization. Thus, this study using untreated powder (UWSP) ultra-fine treated ash (UFTWSA) a substitute cement. Different weight fractions UWSP UFTWSA (5, 10, 15 20%) were used to investigate the influence fresh hardened properties mortar. Further, durability all mixes was evaluated by immersing them different concentrations MgSO4 10 20%). experimental results revealed that inclusion reduces Moreover, addition has negative impact mortar compared UFTWSA. specimens remarkably decreased solution. However, contained not exposed acid attack achieved than 30 MPa can be classified good type depending obtained ultra-sonic plus velocity values (UPV).