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Application of coal ash synthetic channel jointing material on damping interface or in water construction

A fly ash and channel technology, applied in water conservancy projects, marine engineering, other chemical processes, etc., can solve the problems that polyurethane sealing materials cannot be constructed, materials cannot be cured, and bonding surfaces cannot be bonded into a whole.

Inactive Publication Date: 2009-01-21
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0009] The same kind of polyurethane sealing materials cannot be applied on wet interfaces and water. If water is encountered, this type of material will not be cured or bonded with the bonding surface as a whole.

Method used

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  • Application of coal ash synthetic channel jointing material on damping interface or in water construction

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0049] Experimental example 1, the bond strength measured on the dry surface is 1.02MPa, the bond strength measured on the wet interface is 0.91MPa, and the bond strength in water is 0.83MPa.

experiment example 2

[0050]In Experimental Example 2, the bond strength measured on the dry surface is 1.10 MPa, the bond strength measured on the wet interface is 0.93 MPa, and the bond strength in water is 0.84 MPa.

experiment example 3

[0051] In Experimental Example 3, the bond strength measured on the dry surface is 0.92 MPa, the bond strength measured on the wet interface is 0.81 MPa, and the bond strength in water is 0.73 MPa.

[0052] The above bonding strength values ​​are all greater than the 0.2MPa bonding strength value stipulated in the national standard JC / T482 and JC / T483, which can far meet the requirements of practical engineering applications.

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Abstract

The invention discloses an application of a known impervious canal joint material synthesized by fly ash in the construction at a moist interface or in water. The proposer carries out an experiment to the material at the moisture interface or in the water; experiments show that the bonding strength of the construction of the canal joint material synthesized by the fly ash at the moisture interface or in the water achieves more than 80 percent of that at a dry interface, so the impervious canal joint material synthesized by the fly ash can fully solve problems of moist and water-contained bonding which are encountered during the actual engineering, and satisfy the operating requirement of the engineering.

Description

technical field [0001] The invention relates to the application of a fly ash synthetic channel joint material in wet interface or construction in water, which provides a new application for the fly ash channel joint material. Background technique [0002] In water conservancy projects, a large number of channel projects or aqueduct projects have engineering leakage problems due to weak bonding between joint materials and concrete side walls, which seriously reduces water utilization efficiency and project life. The applicant has obtained the national invention patent "fly ash synthetic channel joint anti-seepage material and its preparation method" (patent number: ZL 200310118992.X), wherein the fly ash synthetic channel joint anti-seepage material is made of pulverized coal The ash is synthesized with raw materials such as polyether polyurethane prepolymer, curing agent, catalyst, antioxidant, and ultraviolet absorber. Its performance is superior to that of the joint materi...

Claims

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Application Information

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IPC IPC(8): E02B3/16C09K3/10
Inventor 张慧莉何武全娄宗科田堪良姚汝芳马少军
Owner NORTHWEST A & F UNIV
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