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Experimental Study on Ecological Performance Improvement of Sprayed Planting Concrete Based on the Addition of Polymer Composite Material

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  • Haoqiang Lai

    (School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, China
    Guangdong Engineering Research Center for Major Infrastructures Safety, Guangzhou 510275, China)

  • Jiaxin Du

    (School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, China
    Guangdong Engineering Research Center for Major Infrastructures Safety, Guangzhou 510275, China)

  • Cuiying Zhou

    (School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, China
    Guangdong Engineering Research Center for Major Infrastructures Safety, Guangzhou 510275, China)

  • Zhen Liu

    (School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, China
    Guangdong Engineering Research Center for Major Infrastructures Safety, Guangzhou 510275, China)

Abstract

Sprayed planting concrete (SPC) can be used for the ecological restoration of rocky steep slopes. It is a kind of outside-soil material with excellent soil and slope stabilization performance, and plants can grow in SPC, thus achieving harmony between engineering stability and ecological restoration and improving the landscape and ecosystem. The addition of cement is the key to allowing SPC to achieve slope stabilization and prevent soil erosion. However, the addition of cement can cause SPC to have high alkalinity, overheating (cement generates hydration heat), and excessive hardening, which are not conducive to the growth of plants and can lead to poor ecological performance of SPC for slope ecological restoration. We studied the improvement of the ecological performance of SPC by using a polymer composite material composed of a polymer adhesive material and a polymer water-retaining material. This paper studied the improvement effects of the polymer composite material on the ecological performance of SPC used in slope ecological restoration through a laboratory erosion resistance test and a plant growth test. The results showed that SPC with the addition of polymer composite material can reduce its cement content by about 50% while still retaining excellent erosion resistance performance when it is used in slope ecological restoration. Additionally, the plant germination rates and plant heights when using the SPC improved by polymer composite material were increased by 190% and 110%, respectively. These results show that polymer composite material can significantly improve the ecological performance of SPC and effectively improve its slope ecological restoration effects. This study provides theoretical and technical support for the application of SPC in ecological restoration on rocky steep slopes.

Suggested Citation

  • Haoqiang Lai & Jiaxin Du & Cuiying Zhou & Zhen Liu, 2022. "Experimental Study on Ecological Performance Improvement of Sprayed Planting Concrete Based on the Addition of Polymer Composite Material," IJERPH, MDPI, vol. 19(19), pages 1-20, September.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:19:p:12121-:d:924545
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    References listed on IDEAS

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    1. Tae Hyoung Kim & Sung Ho Tae, 2016. "Proposal of Environmental Impact Assessment Method for Concrete in South Korea: An Application in LCA (Life Cycle Assessment)," IJERPH, MDPI, vol. 13(11), pages 1-16, November.
    2. Hao Gou & Jin Liao & Fan Du & Changliang Tang & Yali Lin & Dingjuan Li & Yulei Zhang & Yangyang Ning & Zihui Ye & Zheyao Xu & Cuiying Zhou & Zhen Liu, 2022. "Soil Remediation of Subtropical Garden Grasses and Shrubs Using High-Performance Ester Materials," Sustainability, MDPI, vol. 14(6), pages 1-18, March.
    3. Wei Huang & Cuiying Zhou & Zhen Liu, 2022. "Model Test Study on the Enhancement of Ecological Self-Repairing Ability of Surface Slope Soil by New Polymer Composites," IJERPH, MDPI, vol. 19(16), pages 1-17, August.
    4. Cuiying Zhou & Xingxing Ge & Wei Huang & Dexian Li & Zhen Liu, 2019. "Effects of Aqua-Dispersing Nano-Binder on Clay Conductivity at Different Temperatures," Sustainability, MDPI, vol. 11(18), pages 1-13, September.
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    Cited by:

    1. Wei Chen & Jiusu Li, 2023. "Effects of Different Silicon Sources on the Properties of Geopolymer Planting Concrete Mixed with Red Mud," Sustainability, MDPI, vol. 15(5), pages 1-21, March.
    2. Yongsheng Yao & Peiyi Xu & Jue Li & Hengwu Hu & Qun Qi, 2024. "Advancements and Applications of Life Cycle Assessment in Slope Treatment: A Comprehensive Review," Sustainability, MDPI, vol. 16(1), pages 1-28, January.

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