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Coal ash synthesized channel joint impermeable material and its preparation method

A technology of anti-seepage material and fly ash, which is applied in the field of joint anti-seepage materials and its preparation, can solve the problems of high heating temperature requirements, poor weather resistance, low bonding strength, etc., achieve strong UV resistance and save mineral resources Effect of resources, strong bond strength

Inactive Publication Date: 2004-11-17
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are many anti-seepage materials in the current market, but due to reasons such as price and performance, there are few anti-seepage joint materials suitable for concrete lining channels, and the cost of chemically synthesized anti-seepage materials on the market is too high to be used in agricultural channel anti-seepage. Seepage joint project, at present, the anti-seepage materials of channel joints mainly use cement mortar, asphalt mortar and polyvinyl chloride cement
The bonding strength between the cement mortar and the concrete lining slab is low, and it is a rigid connection, which cannot be deformed and is not suitable for frost heaving of the channel. Once the deformation of the concrete slab of the channel caused by frost heaving occurs, the cement mortar joint will be broken first, and water seepage will occur. leakage; asphalt mortar has certain flexibility and can adapt to certain deformation when the temperature is normal, but it is easy to be brittle in winter and easy to flow in summer; PVC cement is composed of polyvinyl chloride, coal tar plus other additives and fillers, due to coal tar and polyvinyl chloride will pollute the water quality of the channel. In addition, the bonding strength between this material and concrete is low. It can be pulled out by hand in winter, like a black snake. This material needs hot construction, and the heating temperature is very high. Construction Very troublesome, standing seams are easy to flow; and this material has poor weather resistance
[0003] Most of the anti-seepage materials used in the construction industry today are chemical synthetic materials. These materials are expensive and cannot be directly and widely used in anti-seepage joint projects of agricultural channels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The first material of the present embodiment is a polyether type polyurethane prepolymer; the formula quality ratio of the second material prepared by formula components is as follows:

[0024] Fly Ash 70%

[0025] 4,4-diamino-3,3-dichlorophenylmethane 2%;

[0026] Thin oil 5%

[0027] 100# petroleum asphalt 20%;

[0028] Castor Oil 0.7%

[0029] Organotin 0.06%;

[0030] Toluene 1.8%

[0031] Dibutyl phthalate 0.3%;

[0032] Antioxidant 1010 0.07%;

[0033] UV absorber UV-327 0.07%.

[0034] The use process is prepared according to the mass ratio of 1:5.

[0035] After testing, the physical properties of this embodiment are as follows:

[0036] Density: 1.46g / cm 3 ;

[0037] Applicable period: 5h;

[0038] Tensile strength: ≥1.0Mpa;

[0039] Elongation: >350;

[0040] Droop value: 1mm;

[0041] Bond strength: 1.0MPa;

[0042] Heat resistance: 100℃, 5h, no flow, no sagging.

[0043] Low temperature flexibility: -40°C, no cracks around φ25m round rod.

...

Embodiment 2

[0046] The first material of the present embodiment is a polyether polyurethane prepolymer; the formula quality ratio of the second material prepared by the formula components is as follows: fly ash 70%;

[0047] 4,4-diamino-3,3-dichlorophenylmethane 2%;

[0048] 100# petroleum asphalt 30%;

[0049] Organotin 0.6%;

[0050] Dibutyl phthalate 7%;

[0051] Antioxidant 1010 0.2%;

[0052] Ultraviolet absorber UV-327 0.2%;

[0053] The use process is prepared according to the mass ratio of 1:5. Its performance is with embodiment 1.

Embodiment 3

[0055] The first material of the present embodiment is a polyether type polyurethane prepolymer; the formula quality ratio of the second material prepared by formula components is as follows:

[0056] Fly ash 60%;

[0057] 4,4-diamino-3,3-dichlorophenylmethane 1%;

[0058] Thin oil 7%

[0059] 100# petroleum asphalt 30%

[0060] Castor oil 0.6

[0061] Organotin 0.06%;

[0062] Toluene 1%

[0063] Dibutyl phthalate 0.2%

[0064] Antioxidant 1010 0.07%;

[0065] UV absorber UV-327 0.07%

[0066] The use process is prepared according to the mass ratio of 1:5, and its performance is the same as that of Example 1.

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Abstract

A channel juncture impervious material using fly ash as principal raw material synthesized from fly ash with polyether form polyurethane pre-polymer, hardening agent, catalyst, anti-oxidizing agent, and ultraviolet absorbent. The jointing material has superior performance than the jointing material used in the present channel engineering.

Description

technical field [0001] The invention relates to a joint anti-seepage material applied to agricultural irrigation channels, roads, slope linings and building joints and a preparation method thereof, in particular to a fly ash synthetic channel joint anti-seepage material and a preparation method thereof. Background technique [0002] There are many anti-seepage materials in the current market, but due to reasons such as price and performance, there are few anti-seepage joint materials suitable for concrete lining channels, and the cost of chemically synthesized anti-seepage materials on the market is too high to be used in agricultural channel anti-seepage. For seepage joint projects, currently the anti-seepage materials for channel joints mainly use cement mortar, asphalt mortar and polyvinyl chloride cement. The bonding strength between the cement mortar and the concrete lining slab is low, and it is a rigid connection, which cannot be deformed and is not suitable for frost...

Claims

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Application Information

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IPC IPC(8): C09K3/10E01C11/02E02B13/00
Inventor 张慧莉汪有科娄宗科田堪良王永龙阎宁霞
Owner NORTHWEST A & F UNIV
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