Flowability and durability of cement containing technological additives during grinding process

Abstract

This paper considers the major factors influencing cement flowability and its conservation in humid environment with the presence of processing additives during grinding. It describes cement flowability quantitative measurement methods developed and introduced by the authors and implemented on the basis of several cement plants of Russia. The influence of storage conditions on altering cement flowability in humid environments, which simulate absorption of significant moisture quantity in the accelerated mode, was studied. The influence of grinding intensifiers on cement flour rheological characteristics and their conservation under the conditions of storing cement in humid environments was studied as well. The correlation regression analysis of the impact of physical and chemical characteristics of the samples of cement on its flowability was performed. As follows from the analysis, cement flowability has weak correlation dependence on studying variables, which indicates it being influenced by a variable factor not quantitatively measured yet