region have strong belief that the use of crushed sand for making cement concrete results in increase of cement consumption per cubic meter of concrete.Also, the percentage of fine particles (less than 150 m termed as silt) in the crushed sand considerably affects the strength of the concrete....
摘要: PURPOSE: To obtain a concrete product having a surfacing material capable of freely selecting material by arranging imitation stones on a face pallet provided with pores for draining and needlelike protrusions, compacting sand therebetween and feeding a cement paste thereon....
Using 40 mm size graded angular aggregate and zone II river sand, nominal mix concrete (1.0 : 1.5 : 3.0) was prepared. Density and cement content of fresh concrete were 23.45 kN/m3 and 390.83 kg/m3 respectively. Using same ingredients, nominal mix concrete was prepared using ratio given in...
Several experiments have been conducted on a variety of tailings from different mines,including a gradation characterization and influence experiment,a rheology experiment on materials of similar densities,and double-factor rheological experiments based on the concentration and sand ratio. Combined with ...