Experimental study on the vegetation characteristics of biochar-modified vegetation concrete
| Autor: | Jing Qiu, Chao Xie, Linjuan Yuan, Yinghui Jia, Min Zhao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Pollution
Plant growth media_common.quotation_subject fungi 0211 other engineering and technologies food and beverages 020101 civil engineering Improved method 02 engineering and technology Building and Construction 0201 civil engineering Compressive strength Root length Agronomy Germination 021105 building & construction Biochar Environmental science General Materials Science Porosity Civil and Structural Engineering media_common |
| Zdroj: | Construction and Building Materials. 206:321-328 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2019.01.238 |
| Popis: | Vegetation concrete is an effective material to beautify the landscape, reduce pollution and protect the environment. To further improve the plant compatibility of vegetation concrete, this paper recommends an improved method of adding biochar particles to vegetation concrete. In this research, different masses of biochar were mixed into concrete to study the trend in porosity, permeability and plant compatibility. According to the growth status of three types of common grass species, ryegrass was selected as the best grass species in this study. As the content of biochar increased, the porosity and permeability coefficient of vegetation concrete continued to decrease, while the effect of biochar on plant growth promotion at first showed an increase to the maximum and then a gradual decrease. When the biochar content was 5 kg/m3, ryegrass showed the best growth. Compared with the experimental group of vegetation concrete without biochar, the plant height, root length and germination rate increased by 22.2%, 21.1% and 12%, respectively, on day 25, and the compressive strength also increased slightly. Therefore, adding a suitable amount of biochar can improve the characteristics of vegetation concrete. Furthermore, the optimum mix proportion of biochar-modified vegetation concrete was recommended. |
| Databáze: | OpenAIRE |
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