Compressive strength properties of hyper-compacted concrete

The most important property of a concrete mix is workability, i.e., the ability mixture to spread and take given form while maintaining solidity uniformity. main influence on workability exerted by water consumption and, in part, cement consumption. Workability determined mobility at time filling mold plasticity, deform without breaking continuity. In process vibrating pressing placed mold, total volume changes until pressure balanced resistance forces. Deformation or, more precisely, freshly laid with any compaction methods, including vibration compaction, divided into elastic (reversible) residual (irreversible). Residual deformations during occur as result squeezing out redistribution aggregate fractions. Permanent deformation part total. Its value same composition depends shape size pressed sample. At time, it noteworthy that after reaching certain pressure, only will be characteristic mixture. So, A.D. Nikitin, course experiments, found 2.2 MPa, moduli components have following values: for paste - 0.16 · 104 4.5 MPa air 3 ... After static compressible showed deformation. This indicates specified was reached, relative movement aggregates had ended, they are located compactly.