生态混凝土绿色护坡植生性与耐久性研究
作者:
作者单位:

1.南京林业大学土木工程学院;2.中煤科工基团南京设计研究院有限公司、南京科工煤炭科学技术研究有限公司

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中图分类号:

U41

基金项目:

国家自然科学基金项目(5210081716);江苏省自然科学基金(BK20210617)


Investigation on the Planting Performance and Durability of Eco-Concrete for Slope Protection
Author:
Affiliation:

1.College of Civil Engineering,Nanjing Forestry University;2.China Coal Science and Engineering Group Nanjing Design Research Institute Co,Ltd

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    摘要:

    大孔隙护坡生态混凝土作为传统边坡防护混凝土的替代品,在实际工程中可有效保护服役地区的边坡生态环境,具有较好的生态和社会效益。本文通过植生性能、耐久性试验及微观机理分析研究大孔隙护坡生态混凝土内部碱环境的关键调控方法。研究结果表明:(1)复合降碱方法可以实现较好降碱效果;(2)降碱处理后的大孔隙护坡生态混凝土与黑麦草和高羊茅具有很好的匹配性,满足植被的生长需求。(3)植物生长前后,生态混凝土的抗压强度及孔隙率未产生显著变化。综上,生态混凝土碱环境调控方法与草种协同技术的提出有利于大孔隙护坡生态混凝土的性能提升,进一步推动促进“绿色可持续型”生态混凝土材料在护坡工程中的实际应用。

    Abstract:

    Porous eco-concrete is an alternative for the conventional concrete materials for slope protection, which could effectively protect the environmental circumstances during the field applications, with significant ecological and social benefits. In this paper, the research on the alkaline environment-modification methods, the planting performance, and the durability of porous eco-concrete for slope protection was conducted based on experimental tests. The investigation results demonstrated that: (1) The composite alkali-reduction method can achieve a good alkali reduction effect; (2) The porous eco-concrete for slope protection after alkali reduction treatment has a good match with ryegrass and tall fescue and meets the growth requirements of vegetation. (3) After plants' growth, the compressive strength and porosity of specimens were not significantly changed. In summary, the proposed alkaline environment-modification method and vegetation matching technique could contribute to the performance improvement of porous eco-concrete, which will promote the field applications of “green-sustainable” eco-concrete in projects for slope protection.

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  • 收稿日期:2021-05-24
  • 最后修改日期:2021-09-03
  • 录用日期:2021-10-15
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