Pulverised fuel ash in pumped concrete

Abstract

Pumped concrete is defined by the American Concrete Institute as “concrete that is conveyed by pressures through either rigid pipe or flexible hose and discharged directly into the desired area”. Placing concrete by pumping is both economical and practical. Its use has recently increased considerably in the local building industry. Pumping can be used in virtually all projects; its major benefits being evident on congested building sites. For such sites the concrete pump provides a convenient method of transporting the ready mixed concrete. Concrete to be pumped must be plastic. Harsh mixes do not pump. For satisfactory pumping, the supply of concrete must be constant.