USE OF THE RESIDUE OF THE GRINDING MACHINIG PROCESS OF THE INDUSTRY MECHANICAL METAL IN CONCRETE MANUFACTURING

Reference	Presenter	Authors (Institution)	Abstract
04-012	JOÃO CLÁUDIO FERREIRA SOARES	SOARES, J.C.(CENTRO UNIVERSITÁRIO LUTERANO DE MANAUS); FERNANDES, F.D.(UNIVERSIDADE DO ESTADO DO AMAZONAS); SOARES, R.P.(CENTRO UNIVERSITÁRIO LUTERANO DE MANAUS); SILVA, C.C.(Universidade do Estado Amazonas);	This research presents a study proposal in which it analyzes the technical, economic and environmental feasibility of the use of the residue of the metal grinding process of the metal-mechanical industry in the manufacture of concrete. The residue from the industrial grinding process is a solid residue that can not be disposed of in the environment. Currently, the Industrial Pole of Manaus (PIM) industries have high costs for the storage, collection and treatment of these wastes that are normally incinerated. Engineering studies ways to reuse materials and waste from industrial processes or the product life cycle to move the economy and still preserve the environment. The general objective is to reuse the grinding residue in concrete manufacturing. The specific objectives are to reduce environmental impact, reduce disposal costs, reduce concrete aggregate costs, and increase concrete strength. Four specimens of each percentage were prepared, within the technical and normative standards, with 30%, 20%, 10%, 5% and 2,5% of the grit residue replacing the sand. The workability, appearance, curing time and reference trace for 20 MPa were observed. Compressive strength tests were applied to the specimens until breaking according to standard. In the 30% and 20% percentages the resistance was below the required minimum of 20 MPa. With 10% of residue, the resistance was above the minimum required, with an average of 21 MPa. With 5% of residue, the resistance presented the highest average of 27.3 MPa and 2.5% of 26.5 MPa, being on average 16.5% higher than the reference. Other actions are in progress such as the making of a monolithic prototype wall using 10% of residue, chemical analysis of the residue, design and pilot house budget using the waste. It is intended to carry out new tests with 5% and 2,5% of waste aiming to evaluate the possibility of increasing the resistance of the concrete.
<< Back