Experimental Evaluation of Reinforced Concrete Slab Reinforced by Composite Mortar in terms of Flexural Behavior and Floor Impact Noise Evaluation

Abstract

A total of 13 ferroconcrete slab specimens reinforced by composite mortar were used to conduct a strength performance evaluation with the types of reinforcement and the diameter of wire meshes as its parameters to determine failure modes, ductility and stiffness. A total of six floor impact noise tests based on KS F 2810-2:2012 were performed at the construction site of H apartment complex, which had just completed frame construction. The study used Ethylene-Vinyl Acetate Copolymer (EVA), Expanded Polystyrene (EPS), and Polypropylene (PP) as the reinforcement materials effective against floor impact noise, and employed the gridshaped steel wire meshes for improving strength performance.The test results showed that in the case of the reinforced slab specimens, there was no detachment of reinforcement materials like the wire meshes and composite mortar thanks to the bonding force of anchor bolts and composite mortar. Under the maximum strength, the EVA-reinforced slab specimen was the most effective by improving the heavyweight floor impact noise by 23% and the lightweight floor impact noise by 12%.

Estimating the performance of heavy impact sound insulation using empirical approaches

“…The acoustic performance of residential buildings has recently become a prominent issue due to recognition of the adverse effects of noise on the health and lives of residents (e.g., speech interference, hearing impairment, sleep disturbance, annoyance) (Berglund, Lindvall, and Schwela 1999;Secchi et al 2016;Schiavi 2018;NECRC 2016;Haron, Yahya, and Mohamad 2009;Kwon et al 2018). Specifically, floor impact sounds cause a number of noise-related problems in high occupancy areas with multifamily housing (e.g., apartment buildings) as they are inevitably transmitted through the floors and walls (Eom and Paek 2009;Kim et al 2009;K-eco 2018;Ho and Yoon 2019). Such sounds are generally termed neighbor noise.…”