The study of the change in the composition of a concrete mixture and kinetics of concrete strength during centrifugation on the example of the production experience of power line supports at the enterprises of the Socialist Republic of Vietnam
Abstract
The study of the change in the composition of a concrete mixture and kinetics of concrete strength during centrifugation on the example of the production experience of power line supports at the enterprises of the Socialist Republic of Vietnam
Incoming article date: 18.04.2018The experience of applying centrifugation as a molding and compacting method has opened new prospects for the production of highly efficient reinforced concrete products. The experience of production of centrifuged power line supports at one of the enterprises of the Socialist Republic of Vietnam is analyzed. The studies aimed at studying the change in the composition of the mixture during centrifugation and the kinetics of the strength of centrifuged concrete were carried out. The dependence of the ultimate strength of centrifuged concrete on compression on the value of B / W after HMT (heat and moisture treatment) and at the age of 3-7 days was studied. Conclusions are made on the correction of the known quantitative regularities of the change in the strength of vibrating concrete from the value of B / W and the porosity, taking into account the heterogeneity of the structure of the centrifuged concrete over the cross section.
Keywords: centrifugation, heavy concrete, concrete mixture, power line supports, additives to concrete, enterprises for the production of reinforced concrete products