PROPERTIES OF CONCRETE FORMULATION WITH ADDICTION OF CERAMIC SCRAP LIKE AGGREGATE

Reference	Presenter	Authors (Institution)	Abstract
04-103	Carolina Del Roveri	Del Roveri, C.(Universidade Federal de Alfenas); Almeida, D.H.(UNIFAL-MG); Maestrelli, S.C.(Universidade Federal de Alfenas); Grillo, R.H.(INSTITUTO FEDERAL SUL DE MINAS); Grillo, K.F.(INSTITUTO FEDERAL SUL DE MINAS);	Among the inputs used in civil construction, concrete is one of the most used. Concrete can be made for structural purposes or for non-structural purposes: in concrete manufacture, cement (Portland cement is the most used), water and aggregates (classified into coarse and fine). With the use of several raw materials the generation of waste is inevitable, both in construction and in other sectors, such as the industries producing ceramic materials. Among the types of waste from such industries, we can mention the ceramic scrap (from the sanitary ware industry). According to the above, the aim of this research was to study the addition of ceramic scrap as a coarse aggregate in different proportions in the concrete formulation. In order to do this, was select wastes from an industry in the south of Minas Gerais (Brazil), and prepare specimens to determine the physical  and mechanical property of concrete. Were fabricated five concrete formulations, one reference (RC) and four with ceramic scrap substituted for coarse aggregate in the proportions of 25% (CSC-I), 50% (CSC-II), 75% (CSC-III) and 100% (CSC -IV). Fresh concretes, two formulations did not show adhesiveness (CSC-III and CSC-IV) and two a small water runoff (CSC-I and CSC-II), however, without compromising the concrete’s workability. Regarding the compression strength, the average values presented were very good, including the formulation with 100% ceramic scrap (fc = 47.78 MPa). Test specimens showing the waste fragment in the direction parallel to the application of the compression force showed a decrease in the compressive strength. Another important aspect observed in the rupture modes was the small adhesion between the ceramic scrap and the mortar due to the enamel in the contour of the waste. As for the porosity of the concretes, those with 25%, 75% and 100% of ceramic scrap in their composition presented lower values than the reference concrete.
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