Al-Rammahi N. The high-strength self-compacting concrete with shrinkage-compensated for the dry hot climate

Object of research - The object of research is concrete, modified by the water-saturated porous agents that contribute to reducing of shrinkage deformations. The aim of research is development of self-compacting concrete with low shrinkage in the conditions of hot dry climates. The methods of testing concretes in accordance with ЕN 206-1, methodology of viscosimetry and calorimetry, computer modeling are used for the search of optimal ratio between the fractions of the porous agent and optimization of the composition of concrete. Theoretical and practical results consists in perfection of technology of search of composition of high-strength self-compacting concrete on the basis of use of methods of computer material science (moisture propagation model, experimentally-statistical modeling, Monte Carlo method), development of complex addition composition that includes a stabilizator for homogenization of spread of porous components in concrete mixture and self-compacting concrete of С60 class with low shrinkage. The scientific novelty of work consists in the experimental ground of method of internal care of self-compacting concrete in the conditions of hot dry climates. The resulting recommendations are realized when designing the composition of concrete, including concrete with water-saturated lightweight sand ("porcelinite"), which is used in Iraq.