Implementation of marble waste as aggregate material rigid pavement

Abstract

The rigid pavement is used for the pavement with soft ground conditions (subgrade). On the other hand, in recent years, marble waste for civil construction has been widely used to substitute conventional materials such as fine and coarse aggregate in concrete. This study aims to optimize marble sand waste as a substitute for river sand aggregates on concrete pavements. This research creates innovation in the production of rigid pavement. The study used an experimental method to test the raw material, namely fine aggregate (river sand and marble sand) and rigid pavement testing, with various variations in the material's composition, including loading, strain, and concrete slab stress tests. The use of marble sand as a substitute for river sand affects the compressive strength of concrete. The maximum compressive strength of 34.67 N/mm² occurs at 60 % marble sand content. Calculation of the optimum level of marble sand by the regression method yielded 48.90 % with an average compressive strength of 32.37 N/mm². In terms of strain, rigid pavement concrete slabs with 60 % marble sand content showed the best performance among all specimens. The stretch is relatively small so that it is not so fluctuating, the flexibility is relatively small, and the stiffness is the highest. The strain character tends to be compressive so that the dependence on reinforcement will decrease. Dynamically at the shock load, the three concrete slabs are quite good and very far from resonance in both the traffic service load frequency and the large shock load. Rigid pavement concrete slabs with a marble sand content of 40 % show the best performance because they are damping faster and have less tension. Statically, rigid pavement concrete slabs with a marble sand content of 60 % are the best

Exploring the Effects of Reinforcement Ratio on Concrete Rigid Pavement Structure in Malang, Indonesia: Experimental Study and Analysis

“…Finally, the introduction of marble waste material into rigid pavement formulation yields superior performance, characterized by minimal and stable elongation, modest flexibility, and heightened stiffness. The strain behavior leans towards compressive tendencies, indicating reduced reliance on reinforcement [20].…”

Identifying the influence of reinforcement ratio on crack behaviour of rigid pavement

“…Flexural cracking mainly occurs in the tensile region of the concrete, and the largest crack width is located at the surface, close to the neutral line where the crack becomes zero. The dependence of crack width on a number of factors, and previous research has established an aesthetically acceptable range of crack widths, which is between 0.25 mm and 0.38 mm [4]. An area of concern that remains unexplored is how these factors quantitatively affect crack width in concrete, especially in the context of concrete tensile stress.…”