Foundation pit engineering waterproof curtain material based on industrial waste residue

Abstract

The invention discloses a novel cement soil material, which is prepared with clay / sandy soil and cement as raw materials with addition of industrial waste residue / fly ash or ore slag for replacing a part of cement and can reach the requirement of foundation pit engineering waterproof curtain / equal thickness cement soil mixed continuous wall (TRD). The material includes following components, by mass, 15-25% of water, and the balanced being solids and sodium silicate, wherein the mass of the sodium silicate accounts for 3% of the mass of the solids. The solid is composed of a base material and a curing agent, wherein the base material includes clay or sandy soil and the curing agent is composed of cement, industrial waste residue and quick lime. The mass of the curing agent accounts for 25% of total mass. The industrial waste residue is fly ash or ore slag. In the curing agent, the mass percentage of cement is 10-40%. The mass percentage ratio of the quick lime to the industrial waste residue is 1:10-1:5.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a material used for the water-stop curtain-cement-soil mixing continuous wall of constant thickness in foundation pit engineering. Background technique [0002] At present, as a new technology, constant-thickness cement-soil mixing diaphragm (TRD) method has been widely used in water-stop curtains and cut-off walls of deep and large foundation pits, and has achieved good results. And with the development of foundation pit construction toward larger and deeper directions, this construction method will have a large application market due to its own advantages. However, due to its high cost, there is great resistance in promotion. [0003] Constant-thickness cement-soil mixing continuous wall (TRD) construction method is a relatively new form of underground support developed in Japan. With its advantages of uniform wall, good water-tightness, uniform thickness, smooth surface, and ...

AI Technical Summary

Problems solved by technology

[0004] In engineering, rigid waterproof materials (such as anti-seepage concrete) or flexible waterproof materials (such as polymer waterproof materials) are generally used in the construction of anti-seepage projects, because these two waterproof materials have their own inherent defects, such as rigid waterproof materials. The deformation performance of the material is poor or there is a defect of brittleness, and some flexible waterproof materials have the defect that the rigidity is too small

In addition, no matter what kind of waterproof material, its cost is relatively high, and the effect is not very good

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