Open AccessCalculation of Crack Formation During the Thermal Stress State of Concrete Masses and Development of Measures to Improve the Operational Properties of Concrete
Author(s) -
S. Nikolenko,
Светлана Сазонова,
A. V. Zvyagintseva
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1079/3/032028
Subject(s) - mass concrete , slab , materials science , thermal , structural engineering , cement , shrinkage , curing (chemistry) , stress (linguistics) , foundation (evidence) , finite element method , composite material , engineering , linguistics , philosophy , physics , meteorology , archaeology , history
The modeling of the thermally stressed state of the building foundation slab is considered. The performed calculations took into account the occurrence of stresses as a result of heating the concrete mass during cement hydration. To simulate the thermal stress state, the specialized Midas Fea software package is used. In carrying out the research, materials from articles on the construction and examination of the current state of buildings and structures made of concrete and fiber-reinforced structures were used. At control points, diagrams of changes in temperatures, stresses, and crack formation coefficients in relation to the time of curing are obtained. The isopoles of temperature distribution and crack formation coefficients over the volume of the studied array are obtained. Measures have been developed to improve the operational properties of concrete, including engineering and technical recommendations to reduce the negative impact of temperature differences on the manufacturing process of concrete mixtures and foundations.