Deformation-Strength Characteristics of Complex-Modified Tar Concrete
Abstract: It has been experimentally established that tar concrete prepared using complex coal binders is more durable under the action of transport loads than standard tar concrete. This is evidenced by: a variety between residual porosity and water saturation, which shows the volume of closed pores in mixtures on complex coal binders (CCB) by 20…30 % more than for combustible tar concrete; higher values of critical stresses of tar polymer concrete; higher values of the modulus of elasticity at elevated temperatures (40…50 °C); the interval of viscoelastic behavior is much wider for tar-polymer concretes in comparison with traditional tar- concretes and warm asphalt concretes; the physical and mechanical properties of tar polymer concrete and heavy asphalt concrete are identical, which determines the scope of their application. It has been established that there is a correlation between the conditional glass transition temperature of concrete using complex coal binders and the glass transition temperature of organic binders. This indicates that the properties of complex-modified binders determine the rheological behavior of tar-polymer concrete. It has been established that the power-law dependence of the elastic modulus on the frequency of deformation, expressed in terms of the coefficient of plasticity on temperature, has an extreme character. The reason for this is the relaxation processes that occur most intensively in asphalt concrete, as evidenced by its higher values of the coefficient of plasticity at low temperatures than concrete with the use of CCA and hot tar concrete.
Keywords: complex-modified road tar polymer concrete, deformation-strength properties and durability of tar polymer concrete.
Pages: 31-37.
For citation: Bratchun, V. I.; Gulyak, D. V.; Jhevanov, V. V. [et al.]. Deformation-Strength Characteristics of Complex-Modified Tar Concrete. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2022. – Issue 2022-1(153) Modern building materials. – Р. 31-37. – URL: https://donnasa.ru/publish_house/journals/vestnik/2022/2022-1(153)/st_04_bratchun_gulyak_zhevanov_leonov_skorik.pdf (date of access: 19.11.2024). – ISSN 2519-2817.
Issue 2022-1 (153)
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture