Use of Biochemically Modified Silicate at the Waterproofing System Case Study of A Residential Enterprise in Belo Horizonte

Leonardo Otto Coutinho

Universidade Federal Do Rio De Janeiro, Brazil

Abstract: This paper aims to present a case study of waterproofing a multipurpose slab of a residential enterprise located in Belo Horizonte, approximately 2,250 m², including swimming pools, wet deck, gardens, tennis court, sports court, leisure areas and areas of common use. Using the waterproofing system with biochemically modified silicate will increase the waterproofing life to a higher level, according to NBR 15,575, providing sustainability to the environment, less time in isolation of the treated area, the benefits gained the internal conditions of the concrete structure and the ease of maintenance of the structure if necessary. iochemically modified silicate associates with the free calcium of the concrete and whenever it comes in contact with moisture, it reacts chemically resulting in the formation of a CSH gel inside the concrete, which by expanding seals empty and capillary pores within the structure, protecting and waterproofing the structure. Thus providing definitive regenerative properties (self-healing), because its chemical reaction within the concrete causes the formed CSH gel to expand as the structure needs, by forming a gel ts reaction follows the characteristics of porosity and cracking of the structure, filling the voids needed to protect the concrete structure. The increase in service life, the great improvement in maintainability and the sustainability that this system provides for over 40 years in reinforced concrete structures should be presented seeking the development of good technique in Brazilian engineering.