In 2018, production in São Paulo was distributed in 51 industrial plants, with a production of approximately 560 million m 2, corresponding to 70% of the total concrete roofing tiles manufactured in Brazil, while the South represents 18% of production and the Northeast 12% ( Cabral Júnior et al., 2019 CABRAL JUNIOR, M. Between 19, concrete roofing tile factories were also installed in the southern region, mainly in Santa Catarina. Estudo estratégico da cadeia produtiva da indústria cerâmica no estado de São Paulo: Parte II - indústria de revestimentos. The first concrete roofing tiles factory began production around 1976 in the city of São Paulo ( Cabral Júnior et al., 2019 CABRAL JUNIOR, M. ABNT NBR 13858:2/2009: Telhas de concreto - Parte 2 : requisitos e métodos de ensaio. The importance of this tile has evolved in such a way that the Brazilian Association of Technical Standards (ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS) has developed standards to regulate the quality standards and properties of this product by means of NBR 13858 ( ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS, 2009a ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS.

When compared to ceramic tiles, concrete roofing tiles have similarities such as weight and diversity of colors. Propriedades físicas, mecânicas e térmicas de telhas de concreto fabricadas com adição de diferentes materiais isolantes. The concrete roofing tiles are used for various roofs, with rectangular shape and wavy or flat profile, formed by cement, aggregate, water, and optionally, additives and pigment or surface coating ( Damasceno et al., 2015 DAMASCENO, F. Thus, it was demonstrated that the technical viability for the proposed process and the use of basalt powder to obtain pressed flat concrete roof tile meets technical requirements and standards, compared to conventional concrete roofing tiles.Ĭomposites pressing strength microstructure roofing tile. This composition, containing cement and basalt powder, is not toxic, confirming the possibility for total replacement of sand by basalt powder. In the bending strength test, the pressed samples containing a cement:basalt mass ratio of 1:6, water content of 5% and specific pressure of 25 MPa revealed a value of 3.82 ☐.46 MPa at 28 days of curing, while the molded samples (reference) with cement:sand mass ratio of 1:5 and 15% water content revealed 1.72 ☐.86 MPa. Hence, pressed specimens based on cement and basalt powder were analyzed. Specimens were submitted to technological and toxicological characterization. This study aims to develop a pressed concrete roofing tile from powder technology containing basalt powder in substitution of fine sand (aggregate) for application in building covers.

Pressed concrete tiles