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.