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Scrap iron-doped fine sand sleeve grouting material and preparation method and matched strength detection method thereof

A technology of sleeve grouting and iron filings, which is applied in the direction of material magnetic variable, etc., can solve the problems of insufficient strength and poor strength of fine sand, improve the strength and crack resistance of the slurry, improve the crack resistance, and reduce the deterioration of mortar Effect

Active Publication Date: 2020-11-10
JINLING INST OF TECH
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AI Technical Summary

Problems solved by technology

[0004] Cement, modified mineral powder and aggregate are the main components of the traditional sleeve grouting material for steel bar connection. At present, the commonly used aggregate is fine sand. Because the fine sand itself is not strong enough, the sleeve grouting material for steel bar connection after use Often weak;

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  • Scrap iron-doped fine sand sleeve grouting material and preparation method and matched strength detection method thereof
  • Scrap iron-doped fine sand sleeve grouting material and preparation method and matched strength detection method thereof
  • Scrap iron-doped fine sand sleeve grouting material and preparation method and matched strength detection method thereof

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Embodiment Construction

[0044] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0045] The present invention provides a sleeve grouting material mixed with iron filings and fine sand, and a preparation method and a supporting strength detection method. This application uses processed iron filings and fine sand to replace the aggregate in the original sleeve grouting material, which can greatly improve the sleeve after use. The strength of the barrel grouting material is low in cost because the application mainly uses pig iron filings to prepare it, and the prepared barrel grouting material can ensure product reliability through real-time rapid analysis and detection of compressive strength.

[0046] As a specific example of the sleeve grouting material mixed with iron filings and fine sand in the present invention, the sleeve grouting material of the present invention is calculated in parts by weight, including the following compon...

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Abstract

The invention discloses a scrap iron-doped fine sand sleeve grouting material and a preparation method and a matched strength detection method thereof, and the scrap iron-doped fine sand sleeve grouting material comprises the following components in parts by weight: 100 parts of cement, 50-55 parts of modified mineral powder, 2 parts of scrap iron fine sand slurry, 3 parts of a water reducing agent, 3 parts of a retarder, 2 parts of a defoaming agent, 1 part of an expanding agent and 20-25 parts of water; According to the invention, aggregate in an original sleeve grouting material is replacedwith the processed scrap iron fine sand, and due to the irregularity of scrap iron, the compactness and strength of the sleeve grouting material are improved; the scrap iron is also equivalent to fibers, so that the crack resistance of the sleeve grouting material is improved. Therefore, the use of scrap iron can greatly improve the intensity of slurry and the crack resistance. The sleeve grouting material is mainly prepared from raw scrap iron, so that the cost is low, and the product reliability of the prepared sleeve grouting material is guaranteed through compressive strength detection.

Description

Technical field [0001] The invention relates to the field of sleeves for connecting steel bars. In particular, it relates to a sleeve grouting material mixed with iron filings and fine sand, a preparation method thereof, and a matching strength detection method. Background technique [0002] At present, my country is actively promoting the industrialization of construction and vigorously promoting prefabricated buildings. At present, prefabricated buildings often use steel bar sleeve connection. Compared with traditional steel bar welding and mechanical connection, the steel bar sleeve grouting connection method is not restricted by the diameter of the steel bar, the load category and the height of the house, and the scope of application is wider; [0003] Rebar sleeve grouting connection technology means that ribbed steel bars are inserted into a grouting sleeve with a concave-convex surface. The gap between the sleeve and the steel bar is poured with special high-strength cement...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B14/34C04B24/00C04B24/12C04B24/28G01N27/72
CPCC04B28/06C04B14/34C04B24/281C04B24/121C04B24/008G01N27/72C04B2201/50C04B7/02C04B14/18C04B14/36C04B14/104C04B14/106C04B2103/302C04B24/10C04B2103/50C04B2103/0068
Inventor 苏慧梁书亭朱筱俊刘传新
Owner JINLING INST OF TECH
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