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Solid waste based coastal karst green filling material and preparation method and application thereof

A filling material and coastal technology, which is applied in the field of solid waste-based coastal karst green filling materials and their preparation, can solve the problems of high filling engineering cost and large demand, and achieve short setting time, low preparation cost and high mechanical strength. Effect

Pending Publication Date: 2021-02-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned prior art, the filling materials are mostly used in the filling engineering of ordinary karst development areas and goaf areas, and the coastal karst development areas and goaf areas have special geological environments, and the filling materials are severely eroded by seawater, and the filling materials are required to have mechanical strength. High and strong resistance to seawater erosion
In addition, the existing filling materials use traditional cement as the base material. Due to the large demand for filling engineering materials, the current filling engineering cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A highly erosion-resistant solid waste-based littoral karst green filling material and a preparation method thereof, comprising the following steps:

[0039] (1) Weigh 50 parts of Bayer process red mud, 40 parts of blast furnace slag fine powder, 10 parts of steel slag, 7 parts of desulfurized gypsum, 8 parts of sodium silicate, 1 part of nano silicon dioxide, 2 parts of sulphoaluminate cement clinker, Dissolve in 100 parts of water and stir well to make solid waste-based littoral karst green filling material;

[0040] (2) According to GB / T50081-2002 Test Method for Mechanical Properties of Ordinary Concrete, various performance indexes of the hydrodynamic dispersion-resistant plugging material prepared in Example 1 were tested, and the results are shown in Table 1.

[0041] Table 1 performance indicators

[0042] Initial setting time 28d compressive strength Liquidity Corrosion coefficient K Expansion coefficient M 153min 13MPa 32cm 0.96 1....

Embodiment 2

[0044] A highly erosion-resistant solid waste-based littoral karst green filling material and a preparation method thereof, comprising the following steps:

[0045] (1) Weigh 50 parts of Bayer process red mud, 40 parts of blast furnace slag fine powder, 10 parts of steel slag, 10 parts of sodium hydroxide, 1 part of superfine silica fume, 2 parts of ferroaluminate cement clinker, 6 parts of fluorogypsum, Dissolve in 100 parts of water and stir well to make solid waste-based littoral karst green filling material;

[0046] (2) According to GB / T50081-2002 Test Method for Mechanical Properties of Ordinary Concrete, various performance indexes of the hydrodynamic dispersion-resistant plugging material prepared in Example 2 were tested, and the results are shown in Table 2.

[0047] Table 2 performance indicators

[0048] Initial setting time 28d compressive strength Liquidity Corrosion coefficient K Expansion coefficient M 183min 11.4MPa 34.6cm 1.05 1.0...

Embodiment 3

[0050] A highly erosion-resistant solid waste-based littoral karst green filling material and a preparation method thereof, comprising the following steps:

[0051] (1) Weigh 50 parts of Bayer process red mud, 40 parts of blast furnace slag fine powder, 10 parts of steel slag, 10 parts of sodium hydroxide, 8 parts of phosphogypsum, 1 part of superfine silica fume, 2 parts of ferroaluminate cement clinker, Dissolve in 100 parts of water and stir well to make solid waste-based littoral karst green filling material;

[0052] (2) According to GB / T50081-2002 Test Method for Mechanical Properties of Ordinary Concrete, various performance indexes of the hydrodynamic dispersion-resistant plugging material prepared in Example 3 were tested, and the results are shown in Table 3.

[0053] Table 3 performance indicators

[0054] Initial setting time 28d compressive strength Liquidity Corrosion coefficient K Expansion coefficient M 123min 18.4 MPa 32.1cm 1.18 1.0...

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Abstract

The invention relates to a solid waste based coastal karst green filling material and a preparation method and application thereof. The material is prepared from the following raw materials in parts by weight: 20-60 parts of red mud, 10-40 parts of blast furnace slag, 5-20 parts of high-iron type metallurgical slag, 3-10 parts of solid waste gypsum, 4-15 parts of an excitant, 0.5-3 part of a densifier and 1-8 parts of a modifier. The solid waste based coastal karst green filling material and water are mixed to form the flowing water anti-dispersion plugging material, and the plugging materialhas the advantages of short coagulation time, high mechanical strength, micro-expansion of a stone body, strong seawater erosion resistance, safety, no toxicity, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of grouting materials, and in particular relates to a solid waste-based coastal karst green filling material and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] In recent years, with the rapid development of my country's ocean development and coastal areas, a large number of basic transportation projects, water conservancy and hydropower projects, and deep mine construction have been put into construction in coastal areas. It is easy to induce disasters such as surface subsidence and water gushing, causing casualties and property losses. [0004] Grouting technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B18/04C04B18/14C04B22/14C04B111/70
CPCC04B18/0409C04B18/141C04B18/142C04B22/144C04B22/145C04B22/146C04B28/26C04B2111/00008C04B2111/00017C04B2111/00724C04B2111/70C04B2201/50C04B2103/0068C04B22/062C04B22/10C04B22/0006C04B14/28C04B14/024C04B14/06C04B14/303C04B24/405C04B18/146C04B7/32C04B22/066Y02W30/91
Inventor 李术才李召峰张健齐延海王衍升
Owner SHANDONG UNIV