Influences of Metamaterials on Bending Toughness of Cement-Based Materials Based on Acoustic Emission Parameters

doi:10.16552/j.cnki.issn1001-1625.20241113.001

Abstract

Abstract: To investigate the feasibility of using novel reinforcing materials to replace fibers to improve the bending toughness of concrete, this study used 3D printing of polylactic acid (PLA) to prepare metamaterials and embedded them into cement-based materials. The crack evolution and mechanical properties of metamaterials and polypropylene (PP) fibers under bending load were studied by using three-point bending and acoustic emission measurement technology. The fracture behavior of metamaterials and PP fibers and the effects of metamaterials on the bending toughness of cement-based materials were analyzed from a microscopic perspective. The results show that the flexural strength of specimen embedded with metamaterials is 40.4% higher than that of specimen with PP fibers, and 116.8% higher than that of control group. Metamaterials greatly enhance the flexural strength of cement-based materials, changing the failure mode from a single crack mode to multiple crack modes, and brittle failure to plastic failure. PP fibers only increase the flexural strength of cement-based materials. The proportion of tensile cracks in the stable growth stage and instable cracking stage of metamaterials is significantly higher than that of PP fibers, and the toughness index is 16.75 times and 4.37 times that of PP fibers.

Key words: metamaterial, cement-based material, bending toughness, multiple crack mode, plastic failure, acoustic emission, tensile crack

CLC Number:

TU528

ZHU Guiwang, QIN Lei, DING Weijian, LI Pingfeng, SUN Ming. Influences of Metamaterials on Bending Toughness of Cement-Based Materials Based on Acoustic Emission Parameters[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(2): 424-433.

References

[1] HUNG C C, LEE H S, CHAN S N. Tension-stiffening effect in steel-reinforced UHPC composites: constitutive model and effects of steel fibers, loading patterns, and rebar sizes[J]. Composites Part B: Engineering, 2019, 158: 269-278.
[2] WEI B Y, HE X J, WU W W, et al. Research on the flexural behavior of polypropylene fiber reinforced concrete beams with hybrid reinforcement of GFRP and steel bars[J]. Materials and Structures, 2024, 57(4): 66.
[3] QIN Y, ZHANG X W, CHAI J R, et al. Experimental study of compressive behavior of polypropylene-fiber-reinforced and polypropylene-fiber-fabric-reinforced concrete[J]. Construction and Building Materials, 2019, 194: 216-225.
[4] WANG D H, JU Y Z, SHEN H, et al. Mechanical properties of high performance concrete reinforced with basalt fiber and polypropylene fiber[J]. Construction and Building Materials, 2019, 197: 464-473.
[5] DE SOUZA CASTOLDI R, DE SOUZA L M S, DE ANDRADE SILVA F. Comparative study on the mechanical behavior and durability of polypropylene and sisal fiber reinforced concretes[J]. Construction and Building Materials, 2019, 211: 617-628.
[6] 漆贵海, 彭小芹, 叶浩文, 等. 聚丙烯纤维对超高强混凝土断裂特性的影响[J]. 建筑材料学报, 2015, 18(3): 487-492.
QI G H, PENG X Q, YE H W, et al. Effects of polypropylene fibres on fracture energy properties of ultra high strength concrete[J]. Journal of Building Materials, 2015, 18(3): 487-492 (in Chinese).
[7] 郑思铭, 李蔚, 杨函瑞, 等. 3D打印聚乳酸的改性研究与应用进展[J]. 材料导报, 2024, 38(8): 256-265.
ZHENG S M, LI W, YANG H R, et al. Research progress in the modification and applications of 3D printed polylactic acid[J]. Materials Reports, 2024, 38(8): 256-265 (in Chinese).
[8] SANTANA H A, AMORIM N S, RIBEIRO D V, et al. 3D printed mesh reinforced geopolymer: notched prism bending[J]. Cement and Concrete Composites, 2021, 116: 103892.
[9] MAQSOOD N, RIMAŠAUSKAS M. Characterization of carbon fiber reinforced PLA composites manufactured by fused deposition modeling[J]. Composites Part C: Open Access, 2021, 4: 100112.
[10] DONG P, DING W J, YUAN H Y, et al. 3D-printed polymeric lattice-enhanced sustainable municipal solid waste incineration fly ash alkali-activated cementitious composites[J]. Developments in the Built Environment, 2022, 12: 100101.
[11] BEHNIA A, CHAI H K, SHIOTANI T. Advanced structural health monitoring of concrete structures with the aid of acoustic emission[J]. Construction and Building Materials, 2014, 65: 282-302.
[12] GENG J S, SUN Q, ZHANG Y C, et al. Studying the dynamic damage failure of concrete based on acoustic emission[J]. Construction and Building Materials, 2017, 149: 9-16.
[13] 朱德滨. 基于声发射技术的高韧性水泥基复合材料开裂损伤特性[J]. 武汉理工大学学报, 2012, 34(7): 94-97+123.
ZHU D B. Study on the fracture damage characteristic of high toughness cementitious composite with acoustic emission technique[J]. Journal of Wuhan University of Technology, 2012, 34(7): 94-97+123 (in Chinese).
[14] 卜静武, 徐慧颖, 羌宇杰, 等. 橡胶混凝土轴拉破坏过程中声发射特性[J]. 建筑科学与工程学报, 2022, 39(2): 78-86.
BU J W, XU H Y, QIANG Y J, et al. Acoustic emission characteristics of rubber concrete in axial tension process[J]. Journal of Architecture and Civil Engineering, 2022, 39(2): 78-86 (in Chinese).
[15] FARNAM Y, GEIKER M R, BENTZ D, et al. Acoustic emission waveform characterization of crack origin and mode in fractured and ASR damaged concrete[J]. Cement and Concrete Composites, 2015, 60: 135-145.
[16] OHNO K, OHTSU M. Crack classification in concrete based on acoustic emission[J]. Construction and Building Materials, 2010, 24(12): 2339-2346.
[17] 胡浩聪, 刘娟红, 王金安. 纤维增强混凝土韧性及声发射特征分析[J]. 煤炭学报, 2023, 48(3): 1209-1219.
HU H C, LIU J H, WANG J A. Toughness test and acoustic emission characteristics analysis of fiber reinforced concrete[J]. Journal of China Coal Society, 2023, 48(3): 1209-1219 (in Chinese).
[18] 白金超, 成云海, 郑强强, 等. 干、湿喷混凝土受载力学特性及破坏机制[J]. 煤炭学报, 2020, 45(8): 2777-2786.
BAI J C, CHENG Y H, ZHENG Q Q, et al. Mechanical characteristics and failure mechanism of dry and wet shotcrete under loading[J]. Journal of China Coal Society, 2020, 45(8): 2777-2786 (in Chinese).