文献类型：期刊文献

英文题名：Quantitative Assessment and Optimized Utilization of Soundless Cracking Demolition Agent for Fragmentations of Basalt Fiber-Reinforced Concrete

作者：Zhong, Zhen[1];Cui, Yuhang[1];Tao, Pan[1];Gao, Chao[2];Lou, Rong[3];Liu, Jie[1]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[2]Hohai Univ, Key Lab Coastal Disaster & Protect, Minist Educ, Nanjing 213022, Peoples R China;[3]Huahui Engn Design Grp Corp Ltd, 177 Jiefang Ave, Shaoxing 312000, Peoples R China

年份：2025

卷号：37

期号：3

外文期刊名：JOURNAL OF MATERIALS IN CIVIL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001397962100002)、、EI(收录号：20250317701385)、Scopus(收录号：2-s2.0-85214994663)、WOS

基金：This work was funded by National Natural Science Foundation of China (Grant Nos. 51509154 and 52179112), Natural Science Foundation of Zhejiang Province (Grant No. LGJ20E090001), International Scientific and Technological Cooperation Projects of Shaoxing University (Grant No. 2019LGGH1008), and Shaoxing Scientific and Technological Projects (Grant No. 2023A13005). All of the support is gratefully acknowledged.

语种：英文

外文关键词：Soundless cracking demolition agent (SCDA) technique; Basalt fiber-reinforced concrete (BFRC); Fiber content; Modified concrete damage plasticity (CDP) model; Cracked volume

外文摘要：The soundless cracking demolition agent (SCDA) technique provides an environmentally friendly approach for demolishing brittle structures. An integration of experimental and numerical approaches was adopted to explore an optimized design for the fragmentation of basalt fiber-reinforced concrete (BFRC). The expansion pressure of SCDA was first determined via the volume expansion ratio (VER) and expansion pressure (EP) tests. Then, cracking experiments combined with digital image correlation (DIC) and acoustic emission (AE) techniques were performed on lab-scale BFRC blocks. SCDA-induced cracking is divided into the microcracking, macrocracking, and failure stages. Surface cracks initiate around the hole and then propagate toward the free surface along the line of least resistance. As indicated by measuring the time to first crack (TFC), the maximum crack width and the cracked volume ratio (Rc), the cracking process of the PC/BFRC cubes is significantly affected by both fiber content and hole diameter. The maximum crack width and Rc increase with the increased hole diameter and the decreased fiber content. TFC is later for the cubes with higher fiber content. Furthermore, a modified concrete damage plasticity (CDP) was developed to simulate SCDA-induced cracking in meter-scale PC/BFRC models with various hole diameters, spacings, and fiber contents. The Rc increases with increased hole diameter and decreased fiber content. The optimum hole spacings with respect to the peak Rc are determined. Finally, an empirical relationship was proposed to correlate the effective Rc to the hole and BFRC parameters. This quantitative study provides guidance to optimize parameter design for practical works.