Sand size particle amount influence on the full brick quality and technical properties

Abstract

In this study was used three different clay types and sand from the local quarry in Latvia. Clay mass mixes were made by adding sand in each mix and remaining the same amount of clay proportion. Sand size particle amount was increased from 33% to 59%. Samples were extruded with laboratory extruded as full brick samples. After formation samples were dried at 105 °C and fired at 1000 °C for 1 h. Water absorption, shrinkage, density, compressive strength were measured after the firing process. The crack amount was determinate by the digital camera after drying process and after firing process. Fired sample cracks start/end points were analysed with SEM-EDX.