Effects of two types of activated carbon on the properties of vegetation concrete and Cynodon dactylon growth
Abstract Vegetation concrete is one of the most widely used substrates for slope ecological protection in China. However, there are still some imperfections that are disadvantageous for plant growth, such as high density, low porosity, insufficient nutrient retention ability and so on. In this paper...
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doaj-d7d8c5de631043408075c0a82d7892282021-09-05T11:27:31ZengNature Publishing GroupScientific Reports2045-23222020-09-0110111210.1038/s41598-020-71440-wEffects of two types of activated carbon on the properties of vegetation concrete and Cynodon dactylon growthJiazhen Gao0Daxiang Liu1Yakun Xu2Jiangang Chen3Yueshu Yang4Dong Xia5Yu Ding6Wennian Xu7Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region (China Three Gorges University), Ministry of EducationEngineering Research Center of Eco-Environment in Three Gorges Reservoir Region (China Three Gorges University), Ministry of EducationEngineering Research Center of Eco-Environment in Three Gorges Reservoir Region (China Three Gorges University), Ministry of EducationKey Laboratory of Mountain Hazards and Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of SciencesKey Laboratory of Geological Hazards on Three Gorges Reservoir Area (China Three Gorges University), Ministry of EducationKey Laboratory of Geological Hazards on Three Gorges Reservoir Area (China Three Gorges University), Ministry of EducationKey Laboratory of Disaster Prevention and Mitigation (China Three Gorges University), Hubei ProvinceKey Laboratory of Disaster Prevention and Mitigation (China Three Gorges University), Hubei ProvinceAbstract Vegetation concrete is one of the most widely used substrates for slope ecological protection in China. However, there are still some imperfections that are disadvantageous for plant growth, such as high density, low porosity, insufficient nutrient retention ability and so on. In this paper, the effect of wood activated carbon and mineral activated carbon on the physicochemical properties of vegetation concrete is studied. The experimental results show that the activated carbon proportion in vegetation concrete is positively related to the porosity, permeability coefficient, water holding capacity, and nutrient content and retention ability, while it is negatively related to the dry density, water retention ability, cohesive force and internal friction angle. However, it should be noticed that when the proportion exceeds 2%, the average height, aboveground biomass and underground biomass of Cynodon dactylon decrease with increasing proportion of activated carbon. The effect of wood activated carbon is generally more remarkable than that of mineral activated carbon. In addition, according to the research results, the effect of activated carbon on vegetation concrete can last for at least half a year, although it does slowly deteriorate with increasing time. By comprehensive consideration of the current industry standard, previous research results and economical reasoning, the recommended type of activated carbon is wood, with a corresponding suitable proportion ranging between 1 and 2%.https://doi.org/10.1038/s41598-020-71440-w |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jiazhen Gao Daxiang Liu Yakun Xu Jiangang Chen Yueshu Yang Dong Xia Yu Ding Wennian Xu |
spellingShingle |
Jiazhen Gao Daxiang Liu Yakun Xu Jiangang Chen Yueshu Yang Dong Xia Yu Ding Wennian Xu Effects of two types of activated carbon on the properties of vegetation concrete and Cynodon dactylon growth Scientific Reports |
author_facet |
Jiazhen Gao Daxiang Liu Yakun Xu Jiangang Chen Yueshu Yang Dong Xia Yu Ding Wennian Xu |
author_sort |
Jiazhen Gao |
title |
Effects of two types of activated carbon on the properties of vegetation concrete and Cynodon dactylon growth |
title_short |
Effects of two types of activated carbon on the properties of vegetation concrete and Cynodon dactylon growth |
title_full |
Effects of two types of activated carbon on the properties of vegetation concrete and Cynodon dactylon growth |
title_fullStr |
Effects of two types of activated carbon on the properties of vegetation concrete and Cynodon dactylon growth |
title_full_unstemmed |
Effects of two types of activated carbon on the properties of vegetation concrete and Cynodon dactylon growth |
title_sort |
effects of two types of activated carbon on the properties of vegetation concrete and cynodon dactylon growth |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2020-09-01 |
description |
Abstract Vegetation concrete is one of the most widely used substrates for slope ecological protection in China. However, there are still some imperfections that are disadvantageous for plant growth, such as high density, low porosity, insufficient nutrient retention ability and so on. In this paper, the effect of wood activated carbon and mineral activated carbon on the physicochemical properties of vegetation concrete is studied. The experimental results show that the activated carbon proportion in vegetation concrete is positively related to the porosity, permeability coefficient, water holding capacity, and nutrient content and retention ability, while it is negatively related to the dry density, water retention ability, cohesive force and internal friction angle. However, it should be noticed that when the proportion exceeds 2%, the average height, aboveground biomass and underground biomass of Cynodon dactylon decrease with increasing proportion of activated carbon. The effect of wood activated carbon is generally more remarkable than that of mineral activated carbon. In addition, according to the research results, the effect of activated carbon on vegetation concrete can last for at least half a year, although it does slowly deteriorate with increasing time. By comprehensive consideration of the current industry standard, previous research results and economical reasoning, the recommended type of activated carbon is wood, with a corresponding suitable proportion ranging between 1 and 2%. |
url |
https://doi.org/10.1038/s41598-020-71440-w |
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