Research Progress in 3D-Printed Noise-Reducing Concrete Materials

doi:10.12141/j.issn.1000-565X.250372

Abstract

Abstract:

As environmental noise pollution becomes increasingly severe, concrete noise barriers have been widely used in noise control applications due to their excellent durability and cost-effectiveness. However, conventional concrete barriers still have shortcomings in sound absorption and insulation performance, making it difficult to meet the comprehensive demands of lightweight design, functional integration, and environmental sustainability simultaneously. Existing research has improved the noise reduction capability of concrete at the material level by incorporating components such as foaming agents and porous lightweight aggregates into cement-based systems. By adjusting material density, porosity, and pore connectivity, the pore structure and acoustic energy dissipation mechanism of the material have been optimized. On this basis, 3D printing provides a new way to achieve complex geometric designs, lightweight manufacturing, and structural personalization for noise-reducing elements. The directional interconnected pore networks and unique interlayer interface characteristics formed during the printing process can effectively extend the sound wave propagation paths and enhance energy dissipation, thus achieving acoustic performance optimization at the structural level. This article systematically summarizes the key factors and their control strategies affecting the noise reduction performance of concrete, focuses on analyzing the mechanisms by which 3D printing processes regulate pore distribution, interlayer interfaces, and surface textures, and summarizes relevant engineering application cases. Existing research indicates that properly designed 3D-printed concrete structure exhi-bits significant advantages in mid-to-low-frequency sound absorption, while further targeted optimization of acoustic performance can be achieved by coordinated regulation of geometric configurations and surface textures. In addition, 3D-printed noise-reducing concrete holds significant application potential in road noise barriers and architectural acoustics, though it still faces technical challenges such as material printability, interlayer bond strength and long-term service performance. Future research should focus on the utilization of green and low-carbon raw mate-rials, multi-scale structural design, and durability assessment to promote the high-performance development and engineering application of 3D-printed noise-reducing concrete.

Key words: 3D-printed concrete, noise reduction, sound absorption, sound insulation

CLC Number:

TU55⁺2

CHEN Yu, LUO Chuyu, ZHANG Yamei. Research Progress in 3D-Printed Noise-Reducing Concrete Materials[J]. Journal of South China University of Technology(Natural Science Edition), 2026, 54(3): 148-159.

Figures/Tables 11

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相关研究	发泡剂类型和用量	材料体系	吸声性能指标
Rommel等^［46］	表面活性剂类发泡剂；用量1%~4%	泡沫混凝土	吸声系数从0.67提升至0.89
Mastali等^［52］	蛋白质水解物发泡剂；用量10%~35%	纤维增强碱激发矿渣泡沫混凝土	中高频吸声系数达0.8~1.0
Galzerano等^［53］	植物表面活性剂类发泡剂；用量0.05%、12.00%	地聚物泡沫	最大吸声系数为0.47（300 Hz）
Zhang等^［54］	稀释水性表面活性剂类发泡剂；用量5%~16%	地聚物泡沫混凝土	吸声系数达0.7~1.0（40~150 Hz）