High fluidity dredging sea mud anti-seepage solidification material and preparation method thereof

Abstract

The invention discloses a high-flow-degree blow-reclamation sea mud anti-seepage curing material and a preparation method thereof. The material includes a component A and a component B, wherein the component A comprises 30-60 parts of active inorganic minerals, 10-30 parts of a cementing material, 10-20 parts of gypsum, 5-12 parts of quick-dissolving sodium silicate, 2-5 parts of quick lime and 1-3 parts of a stabilizing agent, and the component B is one selected from or is a mixture composed of blow-reclamation sea sand and sea mud, wherein the granular size of the component B is not more than 5 mm, the dry mass ratio of the component A to the component B is 1-5:1, and water cement ratio is 0.2-0.5. The material is prepared from easy-to-obtain raw materials and is easy and convenient to prepare, is low in cost and is suitable for large-scale application. The anti-seepage curing material has excellent mechanical performance, good dry shrinkage property, low anti-seepage coefficient and good anti-erosion performance, high grouting flowability and excellent groutability, and has very wide application prospect in the fields of curtain grouting, coastal dam anti-seepage engineering and the like.

Description

technical field [0001] The invention relates to a geotechnical anti-seepage solidification material, in particular to a high fluidity dredging sea mud anti-seepage solidification material and a preparation method thereof. Background technique [0002] my country has a long coastline, and the coastal tidal flats are extremely extensive. The anti-seepage of coastal dams and tidal flats is an extremely important project for coastal areas to resist the erosion of tides and waves. However, in the design and construction of traditional dams, there are many defects such as outdated methods, single materials, long construction period, easy subsidence, slippage, leakage, collapse, etc.: (1) The dams on weak foundations have slow construction speed and serious subsidence Problem: Due to the high water content of the soil, low bearing capacity of the foundation and slow consolidation, the loading speed must be controlled, and the load can only be added when the bearing capacity of the ...

AI Technical Summary

Problems solved by technology

However, in the design and construction of traditional dams, there are many defects such as outdated methods, single materials, long construction period, easy subsidence, slippage, leakage, collapse, etc.: (1) The dams on weak foundations have slow construction speed and serious subsidence The problem: due to the high water content of the soil, the low bearing capacity of the foundation and the slow consolidation, the loading speed must be controlled, and the load can only be added when the bearing capacity of the foundation is increased.

(2) Leakage problems exist in dams on gravel foundations. Many coastal tidal flats in my country belong to sandy geology. The traditional concept is only because of the poor water retention capacity of sandy soil or the danger of piping or flow soil damage due to large seepage hydraulic gradients. Farming cannot be developed in these areas

(3) The dams in the intertidal zone have the problem of erosion and collapse: because the soft clay on the coastal beach has the characteristics of high water content and large cracks when it is dry, it is easy to cause over-wave, Erosion of slopes and even collapse of embankments requires repair and filling almost every day