Preparation method of improved greening additive for vegetation growing concrete

Abstract

The invention discloses a preparation method of an improved greening additive for vegetation growing concrete. The additive is prepared by processing iron ore powder, calcium powder, phosphate ore powder, silicious ore powder, a compound fertilizer, a water-retaining agent, sulphur powder, an air entraining agent and sulphur bacteria. The improved greening additive is added into a vegetation growing concrete base material, so that the porosity of the vegetation growing concrete base material can be greatly increased, the pH value of the vegetation growing concrete base material can be reduced, a slope protecting greening base material of the vegetation growing concrete can be activated, and the process of recovering vegetation of a side slope can be speeded up.

Description

technical field [0001] The invention relates to the technical field of slope greening or slope ecological slope protection, in particular to a method for preparing an improved vegetation concrete greening additive capable of activating a vegetation concrete slope protection greening base material. Background technique [0002] Vegetation concrete slope protection and greening technology is to mix cement, loam, organic matter, plant seeds, fertilizers and vegetation concrete additives in an appropriate proportion to obtain vegetation concrete slope protection greening substrate (referred to as greening substrate, the same below), and then spray it with a concrete dry sprayer On the slopes that need to be greened, then the slope protection greening technology of sprinkling maintenance. On some slopes, anchor rods and hanging nets are often constructed before spraying to enhance integrity and stability. Since the technology came out around 2000, it has been popularized and app...

AI Technical Summary

Problems solved by technology

[0008] However, in a large number of actual projects, it is also found that the vegetation concrete slope protection greening technology has some shortcomings. The main problem is that the greening base material is added with cement. After the cement is hydrated, the calcium hydroxide produced leads to a high early pH value of the base material. , greening base material compaction is not conducive to the activities of microorganisms in the vegetation concrete slope protection greening base material, thus affecting the growth of vegetation roots and the supply of effective nutrients in the soil

A large number of engineering practices have shown that in the first three years, the plant roots sown on the vegetation concrete greening substrate are generally difficult to penetrate to a depth of less than 4cm, which greatly affects the ecological restoration process of the slope