| Issue |
E3S Web Conf.
Volume 274, 2021
2nd International Scientific Conference on Socio-Technical Construction and Civil Engineering (STCCE – 2021)
|
|
|---|---|---|
| Article Number | 04009 | |
| Number of page(s) | 10 | |
| Section | Building Materials and Products | |
| DOI | https://doi.org/10.1051/e3sconf/202127404009 | |
| Published online | 18 June 2021 | |
Influence of the porosity structure of road concrete on its durability
1 Kazan State University of Architecture and Engineering, 420043 Kazan, Russia
2 LLC «Project Bureau TechStroy», 420087 Kazan, Russia
3 JSC «Kazmetrostroy», 420127 Kazan, Russia
4 LLC «Road bulding fnd repair», 423820 Kazan, Russia
* Corresponding author: seregins2@yandex.ru
Cement-concrete pavements of roads and airfields are the most durable type of pavement. The design service life of cement-concrete pavements is 40-50 years, in Russia this period is 20-25 years, and for asphalt-concrete pavements is 10-15 years. The real, actual overhaul period of asphalt concrete pavements, is much lower than the design one (according to the Federal Road Agency of Russia «Rosavtodor», on average, 3-5 years or even less), therefore, work aimed at increasing the durability of cementconcrete pavements is of particular relevance. The main technical parameters of road concrete that characterize its durability are compressive strength, flexural tensile strength, water absorption and others. The most important parameter is the frost resistance of concrete, which is primarily influenced by the structure of the pore space. This paper shows the way of obtaining concretes based on aggregates, the frost resistance of which is lower than the frost resistance of the resulting concrete.
Key words: Concrete / porosity / concrete roads / frost resistance / strength
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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