文献类型：期刊文献

英文题名：Research progress and future prospective of soundless chemical demolition agents (SCDAs) and associated applications

作者：Zhong, Zhen[1,2,3,4];Tao, Pan[1];Zhang, Hao[1];Jin, Huijun[2];Lou, Rong[4];Cui, Yuhang[1];Huang, Qian[1,3];Liu, Jie[1,3]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[2]Northeast Forestry Univ, Inst Cold Reg Sci & Engn, Permafrost Inst, Sch Civil Engn & Transportat, Harbin 150040, Peoples R China;[3]Shaoxing Univ, Ctr Rock Mech & Geohazards, Shaoxing 312000, Peoples R China;[4]Huahui Engn Design Grp Corp Ltd, Shaoxing 312000, Peoples R China

年份：2023

卷号：409

外文期刊名：CONSTRUCTION AND BUILDING MATERIALS

收录：SCI-EXPANDED(收录号：WOS:001122454300001)、、EI(收录号：20234815110086)、Scopus(收录号：2-s2.0-85177981836)、WOS

基金：This work was funded by National Natural Science Foundation of China (grant number 51509154), Natural Science Foundation of Zhejiang Province (grant number LGJ20E090001), International Scientific and Technological Cooperation Projects of Shaoxing University (grant number 2019LGGH1008), Shaoxing Scientific and Technological Projects (2023A13005). All the supports are gratefully acknowledged.

语种：英文

外文关键词：Soundless cracking demolition agent (SCDA); technique; Expansion properties; Cracking mechanism; Optimal hole parameters; Field applications

外文摘要：Rapid urbanizations impose increasing challenges on safety decompositions of those buildings that reached service life, so there is an urgent call for eco-friendly demolition methods. As a green demolition method, the technique of soundless cracking demolition agents (SCDAs) can effectively eliminate dust and noise pollution commonly encountered in conventional methods, and thus attract rising attention in light of increasing concerns for sustainable and low-carbon developments. Herein, this paper provides a state-of-art review of SCDAs and associated applications. SCDA, a powdery material, mainly consists of quicklime (CaO), which tends to expand significantly when mixed with water. The expansion properties of SCDAs are susceptible to internal and external factors, such as compositions, ambient temperature, mixing water temperature, and water/cement (W/C) ratio, restraint conditions, among others. Therefore, substantial efforts have been made to improve the expansion performance of SCDAs by regulating the abovementioned factors. The resulting expansion force from SCDA expansion can effectively crack brittle materials, e.g., concrete and rocks, the cracking process of which can be measured using strain gauges and Acoustic Emission (AE). More recently, digital image correlation and computed tomography have been employed to monitor the SCDA-induced cracking process, and the implementation of those new techniques promotes the observations of crack developments and underlying mechanisms. To gain a cost-effective application of SCDAs, extensive efforts have been undertaken to optimize the design in hole parameters. Accordingly, several empirical equations have been proposed for determinations of optimal hole parameters, but the application of the equations is restricted to particular conditions where they are proposed. Despite the successful usage of the SCDA technique in demolitions of construction structures, mining, unconventional gas and oil recovery, some limitations, namely hard rock fragmentation, precise numerical works and blowout, still need to be addressed for further applications. Overall, this paper gives a brief review of SCDAs, covering scopes of compositions, expansion properties, applications, inadequacies and prospects, deepening our understanding of SCDAs, and providing recommendations for future research priorities.