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Filling material and ground-repairing method

A technology of filling materials and mass parts, which is applied in the direction of infrastructure repair, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of large quantity and rising cost, so as to slow down the hardening speed, reduce the total cost, and reduce failures The effect that occurs

Inactive Publication Date: 2014-07-09
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Compared with the prior art, the technology of Patent Document 1 can obtain lightweight foam filling material at a low cost, but at 1 m 3 The average amount of medium cement is about 100kg, and the amount is large, so there is a problem of cost increase

Method used

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  • Filling material and ground-repairing method

Examples

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Embodiment

[0078] Next, the effects of the present invention will be described using examples and comparative examples, but this example is only an example for explaining the present invention and does not limit the present invention.

[0079]

[0080] Filling materials were produced in the formulation shown in Table 1.

[0081] In addition, with regard to the mixed granulated slag, the throughput of 1mm particle diameter is 50% or more, and the maximum particle diameter is 9.5mm, which has figure 2 The cumulative particle size curve is shown. In addition, blast furnace type B was used for the blast furnace cement.

[0082]

[0083]

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Abstract

Provided are a filling material, which can be manufactured at low cost and has excellent flowability / pumpability and appropriate strength as well as a ground-repairing method using the filling material. The filling material is characterized by comprising 2-10 parts by mass of cement, 30-100 parts by mass of water and 3-10 parts by mass of bentonite with respect to 100 parts by mass of iron and steel slag and in the gas bubble content being in the range of 10-40 volume%.

Description

technical field [0001] The present invention relates to a filling material that can be produced at low cost and has excellent fluidity, pressurized conveyability, and appropriate strength, and a foundation repair method using the filling material. Background technique [0002] Due to the consolidation subsidence of the foundation or the liquefaction accompanying the earthquake, the subsidence of the surface foundation and the subsidence of the road are caused, and a cavity (also called a void) appears between the foundation of the building and the foundation, resulting in the indoor concrete floor. There are problems such as cracks or collapse. [0003] As a method of solving the above-mentioned problems, use of fillers such as micro sand air mortar (micro sand air mortar) can be mentioned. However, regarding the filling material, it is desired to improve the following points: because cement (cement) hardens quickly, it is difficult to carry out pressurized transportation w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/02C04B7/02C04B7/19C04B14/10C04B28/08C09K17/08C09K17/10C09K17/44E02D3/12E02D37/00C04B111/70C09K103/00
CPCC04B28/02C04B2111/00146C04B2111/00663C04B2111/00732C09K17/10E02D3/12Y02W30/91C04B14/104C04B18/142C04B18/144C04B38/0074
Inventor 林正宏林堂靖史中西克佳吉武英树筱原雅树
Owner JFE STEEL CORP
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