Damage behavior and assessment of hollow masonry walls reinforced with polyurea coating under explosive loading

Yuang Wang; Chong Ji; Xin Wang; Haojie Zhu; Gang Wu; Kaikai Zhang

Damage behavior and assessment of hollow masonry walls reinforced with polyurea coating under explosive loading

Authors

Yuang Wang College of Field Engineering, Army Engineering University of PLA https://orcid.org/0009-0006-4222-9374
Chong Ji College of Field Engineering, Army Engineering University of PLA https://orcid.org/0000-0003-3428-6302
Xin Wang College of Field Engineering, Army Engineering University of PLA https://orcid.org/0000-0002-9572-9288
Haojie Zhu College of Field Engineering, Army Engineering University of PLA https://orcid.org/0009-0003-7811-7006
Gang Wu College of Field Engineering, Army Engineering University of PLA https://orcid.org/0000-0003-3043-3336
Kaikai Zhang Training Base of Army Engineering University of PLA https://orcid.org/0009-0002-6747-0886

Abstract

As one of the new protection technologies in the field of anti-explosion protection of masonry walls, polyurea spraying has attracted wide attention of researchers. This paper established a refined numerical model to predict the dynamic response of unreinforced hollow masonry walls (UWs) and polyurea-reinforced hollow masonry walls (PWs) under blast loading. The numerical simulation results were in good agreement with the reference test results. The progressive failure process of UWs and PWs under blast load was clarified by numerical simulation and failure theory model of wall. According to a series of numerical simulation results, the dimensionless damage parameters (maximum deflection rate and mass loss rate) of the wall were defined, the comprehensive influence of polyurea coating method and blast scaled distance on the damage degree of the wall was summarized, and the damage mode retrieval diagram of polyurea reinforced hollow masonry wall under blast load was established. The results showed that the existence of polyurea coating can provide reliable protection for the wall without catastrophic damage when the blast scaled distance was not less than 1.47 m/kg1/3. The research results of this paper can provide an engineering reference for the polyurea reinforcement of hollow masonry walls.

Downloads

Published

2025-06-04

Issue

Vol. 22 No. 8 (2025)

Section

Original Article

License

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).