On the influence temperature conditions during concreting of massive monolithic reinforced concrete structures on the strength of concrete
Abstract
On the influence temperature conditions during concreting of massive monolithic reinforced concrete structures on the strength of concrete
Incoming article date: 02.09.2021Ensuring the regulation of the temperature regime of concrete curing to prevent cracking due to temperature gradients and shrinkage deformations is one of the key points in the construction of massive monolithic reinforced concrete structures. A combination of prescription and technological ones are considered as the main methods for regulating the temperature regime of holding during concreting of massive monolithic structures. The analysis of temperature fields and an assessment of possible cracking of concrete during concreting of grillages of bridge supports, holding of concrete during the erection of structures, in which it was carried out by different methods. It was proposed to clearly stipulate in the normative documents the cases of mandatory tests for concrete frost resistance based on samples taken from the structures. When developing design documentation for standardizing concrete quality indicators, it was proposed that the values of the class of concrete in terms of compressive strength should first of all be assigned according to the condition of ensuring the durability of the structure, depending on the class of the operating environment.
Keywords: massive monolithic reinforced concrete structures, temperature conditions of concrete curing, cracking, frost resistance, compressive strength class of concrete