LAUSR

Abstract This paper presents the results of a laboratory research work suggesting a new technique (ST) for casting concrete that simplifies the well–known conventional casting technique (CT). This simplicity can be done by avoiding the step of mixing cement, sand, gravel and water together (as it is in CT) through preparing cement paste (P) or cement mortar (M) then pouring this mixture over the mold that is filled with gravel. This work consisted of two parts; no sand infiltrated concrete (ST-P) and infiltrated concrete that contained sand (ST-M). In case of using the same amounts of mixing materials, the decrements in compressive and tensile strength caused by changing mixing technique from CT to ST were about (7−9)%. ST was also used to compare reinforced concrete beam, slab and column specimens with those that cast by CT. This work has come to conclude that using ST was easier and faster with less cost and noise when compared with CT although the decrement in the ultimate capacities in cases of beam, slab and column were about (10−15)%.