植生混凝土在公路边坡防护中的试验及应用研究

Test and Application of Planting Concrete in Highway Side Slope Protection

基于日本植生混凝土的相应技术标准,设计了植生混凝土的配合比,通过室内试验研究了其力学性能,并通过工程实例对植生混凝土的护坡效果进行了评价。室内试验表明:室内试验所制备植生混凝土的28d抗压与抗折强度分别大于10MPa、2MPa,满足日本关于植生混凝土的相应规范标准,可用于边坡稳定中;试验所制备植物生长基料可有效保证植物的生根发芽,一个月后,根系可穿透植生混凝土层扎根到下层土壤中汲取营养,植物生长良好。工程应用实例表明:边坡采用植生混凝土进行护坡后,在经历暴雨等不利天气后,坡面未出现任何垮塌现象,抗冲刷能力强,边坡稳定性好;同时坡面植物生长良好,起到了固土护坡与美化边坡景观的作用。

In this paper,the corresponding technical standards of Japan planting concrete based on the design with planting concrete ratio, its mechanical properties were studied through laboratory test, and evaluated through the engineering example of planting concrete slope protection effect. Laboratory tests show that the 28 d compressive and flexural strength of the concrete produced in laboratory tests are greater than 10 MPa and2 MPa,which meets the corresponding specifications of Japanese concrete and can be used in slope stability; the preparation of plant growth material can effectively ensure the rooting and germination of plants. After one month,the roots can penetrate the planting concrete layer,root in the lower soil and absorb nutrients,and the plants grow well; The engineering application example shows that when the slope is planted with vegetation concrete,the slope does not appear any collapse after severe weather such as rainstorm,and the erosion resistance is strong,and the slope stability is good. At the same time,the plant on the slope grows well,and plays the role of soil consolidation,slope protection and landscaping of the slope landscape.