TY - JOUR
T1 - Suppression of dust pollution by double-network material based on enzymatic calcification
AU - Sun, Xiaohao
AU - Miao, Linchang
AU - Wang, Hengxing
AU - Yuan, Junhao
AU - Fan, Guangcai
AU - Xia, Jingxin
N1 - Funding Information:
The authors thank the valuable comments from the reviewers. This study was funded by National Natural Science Foundation of China (grant number 51578147 ), Fundamental Research Funds for the Central Universities (grant number 2242020R20025), Science and Technology Department of Ningxia (grant number 2020BFG02014), and Transportation Department of Ningxia (grant number 202000173).
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/12/20
Y1 - 2021/12/20
N2 - Globally, most cities are facing the severe challenge of dust pollution. Therefore, it is of great significance to find an effective and environmentally friendly method for the suppression of dust generation. This study combined enzymatic calcification with polyvinyl acetate (EC-PVAc) treatment for dust control. To identify the optimal treatment condition for practical field application, wind tunnel tests and direct shear tests were performed. The feasibility of EC-PVAc treatment for the suppression of dust generation was demonstrated with a field test. The results showed that with increased PVAc concentration, both wind-erosion resistance and shear resistance of treated dust soils improved. With combined EC-PVAc treatment with 50 g/L PVAc, the treated dust soils showed a stable and cost-efficient double-network structure. Therefore, EC-PVAc (50 g/L) treatment was applied to solidify dust soils in the subsequent field test. In response to the treatment, vehicles passing the test site generated significantly lower concentrations of PM2.5 and PM10 at the field test site, especially near the soil surface. With EC-PVAc (50 g/L) treatment, the treated field test site had higher surface strength than an untreated area. These results demonstrate that EC-PVAc treatment significantly suppressed dust generation and improved shear resistance, which presents promising potential for the prevention of dust pollution.
AB - Globally, most cities are facing the severe challenge of dust pollution. Therefore, it is of great significance to find an effective and environmentally friendly method for the suppression of dust generation. This study combined enzymatic calcification with polyvinyl acetate (EC-PVAc) treatment for dust control. To identify the optimal treatment condition for practical field application, wind tunnel tests and direct shear tests were performed. The feasibility of EC-PVAc treatment for the suppression of dust generation was demonstrated with a field test. The results showed that with increased PVAc concentration, both wind-erosion resistance and shear resistance of treated dust soils improved. With combined EC-PVAc treatment with 50 g/L PVAc, the treated dust soils showed a stable and cost-efficient double-network structure. Therefore, EC-PVAc (50 g/L) treatment was applied to solidify dust soils in the subsequent field test. In response to the treatment, vehicles passing the test site generated significantly lower concentrations of PM2.5 and PM10 at the field test site, especially near the soil surface. With EC-PVAc (50 g/L) treatment, the treated field test site had higher surface strength than an untreated area. These results demonstrate that EC-PVAc treatment significantly suppressed dust generation and improved shear resistance, which presents promising potential for the prevention of dust pollution.
KW - Double network
KW - Dust control
KW - Enzymatic calcification
KW - Polyvinyl acetate
KW - Shear response
UR - http://www.scopus.com/inward/record.url?scp=85118481166&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2021.125432
DO - 10.1016/j.conbuildmat.2021.125432
M3 - Journal article
AN - SCOPUS:85118481166
SN - 0950-0618
VL - 312
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 125432
ER -