@article{Zhang2020, 
author = {Biaozhi Zhang},
title = {Effects of Fly Ash on Sand Fixation with Microbial-Induced Carbonate},
year = {2020},
journal = {Journal of Highway and Transportation Research and Development (English Edition)},
volume = {14},
number = {2},
pages = {51-56},
keywords = {road engineering, sand fixation, microbial-induced, fly ash},
url = {https://www.sciopen.com/article/10.1061/JHTRCQ.0000729},
doi = {10.1061/JHTRCQ.0000729},
abstract = {Different samples of eolian sand were treated to study the sand-fixing effect of microbial-induced mineralization after mixing fly ash with eolian sand. The effects of blending fly ash on microbial-induced mineralization and sand fixation were investigated by measuring permeability, water retention, surface strength, and wind erosion resistance. After three times of microbial-induced mineralization treatment with 30% fly ash, the permeability coefficient decreased by 79.4%, the cumulative evaporation decreased by 26.5%, the surface strength increased by 19.9%, and the wind erosion rate decreased by 21.2%. The yield of calcium carbonate was negatively correlated with wind erosion rate and positively correlated with surface strength. In conclusion, mixing fly ash is more practical than simply using microbial-induced mineralization to fix sand, which can considerably reduce the permeability and improve the water retention, surface strength, and wind erosion resistance of the solidified layer of aeolian sand.}
}