Fiber reinforced resin base composite material manhole cover

A fiber-reinforced resin and composite material technology, which is used in infrastructure engineering, water conservancy engineering, artificial islands, etc., and can solve the problems of material brittleness, cracks, knocked-off corners, etc.

Inactive Publication Date: 2005-08-03
廖国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steel fiber reinforced concrete manhole cover has high bearing strength, but the material itself is brittle and the impact resistance is not ideal, especially when the joint between the manhole cover and the road surface is uneven during construction, there may be corners or cracks from time to time

Method used

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  • Fiber reinforced resin base composite material manhole cover

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] Manhole cover is made according to formula of the present invention, operating procedure:

[0048] 16% unsaturated resin A, 5% prepreg FRP reinforcement B, 70% aggregate C, 6% filler D, 3% wear-resistant material E.

[0049] ① Unsaturated polyester resin A consists of 80 parts of unsaturated dibasic acid and anhydride

[0050] 1.5 parts methyl ethyl ketone peroxide

[0051] 1.0 parts cobalt naphthenate

[0052] 1.0 part flame retardant hexabromobenzene

[0053] 0.1 part of inorganic pigment mixed;

[0054] ②Prepreg FRP bar B consists of 10-20 parts of unsaturated resin

[0055] 8-20 parts glass fiber

[0056] ③ Aggregate C consists of 120 parts of 40-60 mesh sand

[0057] 120 parts of 20-40 mesh sand

[0058] 80 parts of 10-20 mesh sand

[0059] 30 pieces of 2-4mm stones

[0060] 30 pieces of 4-6mm stones

[0061] ④Fil...

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Abstract

The present invention relates to manhole cover of composite thermoset resin base material, and especially a kind of manhole well of pre-soaked FRP rib and polyester cemented quartz mortar. The manhole cover has reinforcing ribs of pre-soaked FRP, and its material includes polyester resin 10-30 wt%, pre-soaked FRP ribs 1-8 wt%, aggregate 40-75 wt%, stuffing 5-30 wt%, and nanometer material 1-8 wt%. The manhole cover has high compression strength, high toughness, high impact strength and less damage and cracking, is anticorrosive and noise-less, and may be colorized.

Description

technical field [0001] The invention relates to a manhole cover of a thermosetting resin-based composite material, in particular to a manhole cover formed by prepreg FRP bars and polyester resin cemented with quartz mortar. Background technique [0002] Manhole covers made of traditional materials are prone to rust under natural conditions, and noise is likely to be generated when vehicles pass by. Modern roads, especially expressways, have a large traffic flow and many heavy vehicles. The traditional manhole covers are also difficult to meet the requirements in terms of strength. The manhole covers laid on the road are often stolen, causing damage to pedestrians and vehicles. ACCIDENT. A few years ago, a steel fiber reinforced concrete manhole cover was developed. Its pressure bearing effect is much higher than that of the cast iron manhole cover of the same specification. It can meet the requirements of passing heavy vehicles, does not produce noise, has no value for thef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/14
Inventor 廖国
Owner 廖国
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