Abstract
Currently available vegetation-concrete is not satisfactory for application in alpine and cold areas. The loss rates of weight and resonance-frequency are both more than 50 % after 30 freeze–thaw cycles. In order to improve the frost resistance of vegetation-concrete, this study chose five kinds of admixtures and then performed single-mixed and orthogonal tests for comparison and optimization. The composition of the optimum scheme is fly ash (FA):silica fume (SF):air-dried pine needles of Pinus armandii Franch (PNP):fibers of Trachycarpus fortunei (FT) = 12:20:3:5 (weight ratio), and the recommended mixing amount is between 6 and 9 % of soil weight. In practical ecological restoration projects, not only could the new mixed-admixture reinforce frost resistance, but it also has no significant influence on the porosity and pH of the vegetation-concrete.
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Acknowledgments
This study was supported by the Snow Avalanche Research Foundation of Ministry of Transport of the People’s Republic of China, Directional Project of Institute of Mountain Hazards and Environment of Chinese Academy of Sciences (Grant No. SDS-135-1204-01), National Natural Science Foundation of China (Grant No. 51278281), and National Key Technology R&D Program of China (Grant No. 2012BAC06B02).
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Daxiang, L., Wennian, X., Zunlan, C. et al. Improvement test on frost resistance of vegetation-concrete and engineering application of test fruitage. Environ Earth Sci 69, 161–170 (2013). https://doi.org/10.1007/s12665-012-1944-0
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DOI: https://doi.org/10.1007/s12665-012-1944-0