Determinação da qualidade dos blocos cerâmicos produzidos em três estaleiros da vila sede do distrito de Magude

Abstract

Ceramic brick is a reddish ceramic product, generally in the shape of a parallelepiped shape and widely used in civil construction, both handmade and industrial. It is suspected that quality care of clay blocks is still not a common task for producers in rural Mozambique. in rural Mozambique. The present work aims at determining the quality of of the clay blocks produced in three yards in the main town of Magude district in Maputo province. Maputo province. The research methodology was a study that covered the building sites of the Machaiei Machaieie and Armando located in the Mawandha area and the producer Boas located in the Boas located in the control zone, the clay deposit was analysed taking into account the organic matter the organic matter content, the location of the deposit and the ease of disintegration of the clods, and then proceeded with the description of the production process from clay extraction to the sewing stage, and then 10 blocks were selected from each yard, adding up to a total of 30 that were total of 30 that were sent to the laboratory and later submitted to tests of resistance to compression, water absorption, dimensions and deviation from the square for each batch belonging to each ceramic building site. As a result, the following results were obtained from the shipyards of the producers Machaieie and Armando, as to the analysis of the clay deposit, the clay is easily degraded due to humidity, as it is close to the river. This is because it is close to the river and has a low content of organic matter. Boas producer that along the entire profile of the deposit has high organic matter content. At In the production process, they were careful at the clay extraction, kneading and drying stages. But the Machaieie producer takes four days to dry the blocks when they are sunny days. No They do not stock the clay and at the firing stage they take only one day to sew the blocks. On In the final product, the dimensional analysis of the three batches tested was rejected, while the compressive strength test was rejected. for the test of compressive strength, deviation from the square, water absorption and visual characteristics visual characteristics of the blocks corresponding to the producer Machaieie, were within the quality parameter having an average that reached the minimum value of 1.5Mpa of compressive strength compression strength and a total of 10 blocks with less than 3mm of misalignment and warping and an average of 20,608% water absorption, different from the blocks from the producer's yards Armando e Boas which were not within the standards. (TRADUÇAO NOSSA)