МІЦНІСТЬ, ЗНОСОСТІЙКІСТЬ І МОРОЗОСТІЙКІСТЬ ФІБРОБЕТОНІВ ЖОРСТКИХ ДОРОЖНІХ ПОКРИТТІВ З БАЗАЛЬТОВОЮ ФІБРОЮ ТА ПОВІТРОВТЯГУЮЧОЮ ДОБАВКОЮ

Abstract

Introduction. Increasing the durability of hard pavements allows you to reduce road maintenance costs by extending the intervals between repairs. Dispersed reinforcement is a well-known method of increasing the frost resistance and abrasion resistance of concrete, which has a positive effect on the durability of pavements in typical for Ukraine climatic conditions. Basalt fiber is resistant to corrosion and relatively inexpensive, which makes it promising for use in the road industry. Also, plasticizing and air-entraining admixtures must be used for concrete of hard pavement. Problem Statement. In modern economic conditions and taking into account the technological features of the preparation of mixtures, it is relevant to compare the effectiveness of the use of known methods of improving the properties of concrete for hard pavements: dispersed reinforcement and the use of air-entraining admixtures. Studying the expediency of the simultaneous use of these two methods of modifying the concrete mixture is also an important task from a scientific and practical point of view. Purpose. Determination of the influence of basalt fiber and air-entraining admixture on the strength, frost resistance and abrasion resistance of concrete of hard pavements.