Preparation of core type greening brick

Abstract

The invention discloses a method for preparing a green core brick with the advantages of simplicity, low cost and short curing time. The green core brick consists of 0.5 to 5 portions of gelling agent, 2 to 10 portions of curing agent, 3 to 45 portions of desert sand grains, and 1 to 15 portions of bentonite, wherein the gelling agent is water glass, and the curing agent is AlCl3 solution. The penetration depth and the cementing strength of the green core brick are set according to the grain size of the sand grains, and simultaneously, a little amount of the bentonite is added in the formulation to obtain a chemical sand fixing brick with good moisture and fertility preserving properties. A curing layer of the green core brick is suitable for Tibet plateau with large wind sand and more drift sand in particular.

Description

technical field [0001] The invention belongs to the technical field of desert control. The invention relates to a core-shaped greening brick, more specifically a desert greening brick prepared by inorganic gelling technology and a preparation method thereof. Background technique [0002] China is one of the countries seriously endangered by land desertification. At present, my country's land desertification is still showing an increasing trend. Land desertification is not only a major ecological environment problem, but also a very serious social and economic sustainable development problem that our country is facing. my country's desert and desertification land area is about 1.607 million square kilometers, accounting for 16.7% of the country's land area. At present, the area of ​​desertified land in my country is expanding at a rate of 2,460 square kilometers per year, and there is a trend of accelerating expansion. my country has taken many measures to prevent and cont...

AI Technical Summary

Problems solved by technology

The growth rate of plants is very slow, and desert sand does not have the ability to retain water and fertilizer, so chemical sand fixation is almost unfeasible according to the existing geographical conditions; mechanical sand fixation methods based on short-distance sand barriers are costly and can only be used within about 50 meters of the road. In addition, there are many mobile sand dunes along the railway line, with large sandstorms, many quicksands, and sand barriers tens of centimeters high. They will be submerged and filled in less than 2 to 5 years, and the effective time is very short.

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