Fung B. Regulation of cement hardening in concrete with allowance of climatic features of Vietnam.

The ways regulation of cement hardening in concrete in the conditions of hot and humid climate of republic are presented. Kinetics of heat evolution during hydration of vietnamic and ukrainian cements in the presence of additives - plastificators and hardening accelerators is investigated. The indexes of intensity and the completeness of reaction under the influence of temperature factor and additives are found, the parameters of pore structure of the basic component of concrete - the cement stone with additives and shaped of water bonding in investigated temperature interval are defined by means of thermoporosimetry. Methodology is proposed and the calculation is carried out for determination of temperature fields and solar radiation in geliopackage. The proposition as to regulation of cement hardening in concrete with the application of chemical additives and solar energy are worked out and handed over to the Hanoi factory of armored concrete products.