Work

Experimental Investigation on the Dynamic Flexural Performance of High-Strength Rubber Concrete

Year: 2025

Type: article

Abstract: Traditional concrete suffers from high energy consumption during production and low flexural strength, making it prone to flexural failure under impact loading. To address these issues, an eco-friendly non-autoclaved rubber concrete (NARC) was developed. The dynamic flexural performance of NARC was systematically investigated using a 100 mm diameter split Hopkinson pressure bar (SHPB) apparatus, with variations in rubber content (0%, 5%, 10%, 15%, and 20%). The results demonstrate an inverse correlation between dynamic flexural strength and rubber content. A replacement level exceeding 10% resulted in strengths inadequate for practical applications. At a 5% rubber content, the strain rate sensitivity was the most pronounced, where both dynamic strength and mid-span displacement exhibited a significant positive correlation with increasing strain rate. This enhanced performance is attributed to the high strength and dense microstructure of NARC, which facilitates more effective aggregate fracture under high-energy, short-duration impacts, thereby improving its dynamic load resistance. These findings provide valuable insights for promoting the practical and environmentally friendly production of rubber concrete.

Source: Buildings

DOI: 10.3390/buildings15234377

Authors: Jiahao Wen, Fei Yang, Dawei Chen, Wanhui Feng, Sheng Lan

Institutions: Guangdong University of Technology, Zhongkai University of Agriculture and Engineering

Language: English

Topic: Innovative concrete reinforcement materials

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $3,137