WATER QUALITY FOR CONCRETE MIXING: A DETERMINING FACTOR FOR THE PERFORMANCE AND DURABILITY OF STRUCTURES

Abstract

The durability of reinforced concrete structures is directly related to the quality of the materials used and the exposure conditions throughout the service life of the structure. In this context, water plays a fundamental role both in the cement hydration process and in the concrete deterioration mechanisms, acting as a transport medium for aggressive agents responsible for pathological manifestations. This study aimed to analyze the influence of water on the durability of reinforced concrete, focusing on pathologies associated with the presence of deleterious substances. Therefore, a qualitative bibliographic research was carried out based on books, scientific articles, and technical standards related to concrete technology and mixing water quality control. Deterioration mechanisms such as reinforcement corrosion, chloride attack, sulfate attack, leaching, and alkali-aggregate reaction were addressed, in addition to the importance of ABNT NBR 15900-1-1 in controlling the quality parameters of water used in concrete production. The results showed that the use of unsuitable water may compromise the strength, durability, and service life of reinforced concrete structures.