ПІДВИЩЕННЯ ДОВГОВІЧНОСТІ ЦЕМЕНТОБЕТОНУ ДЛЯ ПОКРИТТЯ АВТОМОБІЛЬНИХ ДОРІГ

Abstract

The article is devoted to the problem of improving the durability of cement concrete to cover the road through the use of additives. The purpose of the work-improving the durability of cement concrete to cover roads through the use of hydrophobic additives. Object of study-cement-concrete to cover roads. Method of research: statistical analysis of scientific publications, technical and normative literature. In Ukraine, there are almost no necessary types and brands of road cement, so the research and application of existing binders with effective additives is an urgent problem, the solution of which will expand the nomenclature of cement binders for road Construction, improve the durability and resistance of cement concrete covering roads, bridges and airfields, as well as to solve security issues. For this, it is possible to use chemical additives that kolatating pores, give the surface of concrete water-repellent properties, involve in the concrete mixture of air. Based on the modern representations of the physical- xiemia of superficial processes, it can be concluded that the introduction to the concrete mix of small-scale kremnijorganicnih substances together with the water of the closing, will allow to significantly improve the durability and strength against At the same time for the concrete of aggressive factors and load. The influence of hydrophobic additives on physical, mechanical properties of cement concrete to cover roads is investigated. Based on the experimental results, it is determined that the application of 0.1­0.15% hydrophobic additives 136-157 M has a significant increase in the durability of cement concrete for the seal of roads. KEYWORDS: CEMENT CONCRETE PAVEMENT, HYDROPHOBIC ADDITIVES, FROST RESISTANCE, WATER RESISTANCE, STRENGTH, DURABILITY