ZOOM Ready Mix Concrete - Zoom EngineerConcrete Class. Ratio Cement:Sand:Crush. Working Strength Lbs/Sq. In. A, 1:1:2, 4275. B, 1:1-1/2:3, 3750. C, 1:2:4, 3000. D, 1:3:6, 1500. E, 1:4:8, 1000 . is state of the art plant is equiped with best technology of transit mixers with concrete pump and a full fledged laboratory to deliver quality ready mix concrete. “ZOOM.concrete crushing plant in lahore,USED MARBLE WASTE AGGREGATE: OPPURUNITIES FOR .investigation was carried out on different concrete mixes and was tested in terms of workability and compressive strength test. The slump test result . recycling plant. The in-site recycling system method was developed by Kajima Technical and Research Institute. (2002). The cost of recycled aggregate is half of cost of.