Abstract: Pumping is a high shear process used in the placement of concrete. The lubrication layer (LL), a thin layer of micromortar, forms at the inner periphery of the pipe during the pumping of concrete, facilitating its movement ...

Abstract: Pumping of concrete is an efficient placement technique. When the concrete is pumped in a pipe, the lubrication layer (LL) forms and its rheological properties predominantly dictate the flow and govern the resumption ...

Abstract: A thin layer of micromortar called a lubrication layer (LL) forms around the inner periphery of the pipe during the pumping of fresh concrete. This LL aids in the movement of concrete under pressure. The composition of the ...