Porous vegetation concrete for road slope ecological protection and preparation method thereof

Abstract

The invention relates to a porous vegetation concrete for road slope ecological protection and a preparation method thereof. The porous vegetation concrete comprises the following components by weight: 100 parts of gravel aggregate, 5.0-8.0 parts of soil, 10-12 parts of cement, 5.0-8.0 parts of papermaking black liquid black concentrated modified liquid, 2.0-3.0 parts of an organic fertilizer, and 4.5-6.0 parts of water. The preparation method includes: evaporating and concentrating papermaking black liquid, then adding a formaldehyde solution, conducting mixing and raising the temperature to 80-85DEG C for reaction, then performing cooling, and conducting evaporation and concentration again. A porous concrete layer formed by pouring of the porous vegetation concrete has a pH value of only about 9.0, and belongs to a low alkali environment suitable for vegetation growth, the porous vegetation concrete has large porosity and high water permeability coefficient, is suitable for plants to take root and the root system to pass through and reach the subsoil, has high compressive strength, and can guarantee the long-term stability of road slopes, thus being suitable for ecological protection of road slopes.

Description

technical field [0001] The invention belongs to the technical field of road slope ecological protection, in particular to a porous vegetation concrete used for road slope ecological protection, and also relates to a preparation method of the porous vegetation concrete used for road slope ecological protection. Background technique [0002] In recent years, my country's infrastructure construction is in full swing, especially the road construction has achieved world-renowned achievements. However, in the process of highway construction, considering factors such as route site selection, economic benefits, and social benefits, most road sections often require high filling and deep excavation construction, which disturbs the soil structure, destroys vegetation, and large-scale mountain quarrying , borrowing soil, resulting in exposed road slope soil and a large amount of waste soil and slag accumulation, causing serious damage to the ecological environment around the line, aggra...

AI Technical Summary

Problems solved by technology

[0005] Cement is an indispensable binder and crosslinking agent for the preparation of vegetation concrete substrates. Generally, ordinary Portland cement is used. The greater the cement content, the better the structural stability and anti-corrosion performance of the concrete substrate. However, when the cement is hydrated, the pores of the vegetation concrete substrate will become strongly alkaline, and the phenomenon of burning seedlings or roots will appear, which is not conducive to the restoration and reconstruction of vegetation communities; at the same time, in order to ensure the nutritional conditions required for vegetation growth, the concrete It is necessary to add a certain amount of greening additives. The existing greening additives are mostly chemical agents, which have poor compatibility with concrete and are easy to be washed away by rain, which also results in poor mechanical properties and poor durability of concrete.

Therefore, the existing vegetation concrete cannot take into account the high strength and durability and the nutritional environment to ensure the normal growth of plants, which limits its further popularization and application.

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