The effect of m-sand and waste marble for strength of concrete

Abstract

Concrete is a construction material composed of cement, water, and aggregate in the form of sand and gravel. Furthermore, Indonesia experiences a yearly increase in the need for building material, including concrete, due to the rise in development. Smooth and coarse aggregate materials are required to manufacture concrete with the inappropriate disposal of waste marble, adversely impacting environmental pollution. Therefore, tremendous efforts need to be carried out to reduce environmental problems associated with the disposal of waste marble to provide adequate economic value for construction and reduce the collection of rough aggregates in the river. A lot of industrial companies are needed to produce a coarse aggregate with various size variants, thereby, manufacturing waste, also known as M-Sand. The stone ash is one of the numerous coarse aggregate materials that are less desirable in concrete production. Therefore, this study was carried out to determine the compressive strength and water absorption content between fine and coarse concrete using a variety of coarse aggregate replacement materials from the waste marble with a 40% M-Sand substitute. The results showed waste marble variations of 0%, 25%, 50%, 75%, 100% substitution of coarse aggregate with 40% M Sand substitution of fine aggregate. The optimum compressive strength was found in variation 3 (40% M Sand + Waste Marble 50%) of 35.801 MPa at 28 days, with the optimum water absorption obtained at variation 1 (40% M-Sand + 0% Waste Marble) at 1.77%. By analysing the waste marble result of R close to 1, it is concluded that this variation can act as an alternative to the composition of a concrete mixture.