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A road manhole cover made of waste residue and its preparation method

A waste residue and manhole cover technology is applied in the field of using waste residues to make road manhole covers and their preparation, and can solve the problems of poor wear resistance, aging resistance and chemical corrosion resistance, fast decay of bearing capacity, and easily broken manhole covers. Simple and easy to use, good compressive and flexural strength, and the effect of avoiding theft and loss

Inactive Publication Date: 2016-05-18
黄俞霖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing road manhole covers are generally made of cast iron. Due to the recycling value of the material, they are often stolen and lost seriously, resulting in accidents of car crashes and deaths.
In order to solve the theft of the cast iron manhole cover, two methods are mainly adopted at present: the one is to install an anti-theft device on the cast iron manhole cover, but the cost is increased, but the problem cannot be fundamentally solved, and it brings inconvenience to the use, such as Chinese patent 93237579, 95241036, 96232738, 99227151, etc.; the second is to consider its no recycling value in terms of materials, such as Chinese patents 97202338, 97207516, 99231650.2, etc.
But they have the following problems: (1) The periphery of the road manhole cover made of reinforced concrete or glass fiber reinforced plastic is easy to break, or even collapse as a whole.
(2) Road manhole covers made of plastic materials have very poor wear resistance, aging resistance and chemical corrosion resistance, and their bearing capacity decays quickly, which cannot meet the requirements of heavy traffic on urban roads

Method used

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  • A road manhole cover made of waste residue and its preparation method
  • A road manhole cover made of waste residue and its preparation method
  • A road manhole cover made of waste residue and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A road manhole cover made of waste slag is characterized in that it is composed of the following raw materials in terms of weight percentage: 50% of waste slag, 20% of quartz sand, and 20% of 500-grade cement.

[0026] The waste slag refers to the waste rock produced during the mining and processing of mineral resources.

[0027] Raw material requirements

[0028] (1) Main technical indicators of waste residue

[0029]

[0030] (2) Main technical indicators of quartz sand

[0031]

[0032] According to the percentage content of the above raw materials, waste residue: square hole sieve with a fineness of 0.049mm, the sieve residue <30%; quartz sand: a square hole sieve with a fineness <2.5mm, and the sieve residue<25%;

[0033] Its preparation steps are:

[0034] (1) Measure the above-mentioned raw materials and 0.12% moisture respectively, and then put them into a forced twin-shaft mixer and mix them into a mixture, and the mixing time is 6 minutes;

[0035] ...

Embodiment 2

[0041] A road manhole cover made of waste slag is characterized in that it is composed of the following raw materials in terms of weight percentage: 55% of waste slag, 25% of quartz sand, and 25% of 500-grade cement.

[0042] The waste slag refers to smelting waste slag.

[0043] The smelting waste slag refers to ferroalloy slag.

[0044] Raw material requirements

[0045] (1) Main technical indicators of waste residue

[0046]

[0047] (2) Main technical indicators of quartz sand

[0048]

[0049] According to the percentage content of the above raw materials, waste residue: square hole sieve with a fineness of 0.049mm, the sieve residue <30%; quartz sand: a square hole sieve with a fineness <2.5mm, and the sieve residue<25%;

[0050] Its preparation steps are:

[0051] (1) Measure the above-mentioned raw materials and 0.12% water respectively, and then put them into a forced twin-shaft mixer to mix and stir to form a mixture, and the stirring time is 6.5 minutes; ...

Embodiment 3

[0058] A road manhole cover made of waste slag is characterized in that it is composed of the following raw materials in terms of weight percentage: 60% of waste slag, 30% of quartz sand, and 30% of 500-grade cement.

[0059] The waste residue refers to other waste residues.

[0060] The other waste residue refers to fly ash.

[0061] Raw material requirements

[0062] (1) Main technical indicators of waste residue

[0063]

[0064] (2) Main technical indicators of quartz sand

[0065]

[0066] According to the percentage content of the above raw materials, waste residue: square hole sieve with a fineness of 0.049mm, the sieve residue <30%; quartz sand: a square hole sieve with a fineness <2.5mm, and the sieve residue<25%;

[0067] Its preparation steps are:

[0068] (1) Measure the above-mentioned raw materials and 0.12% moisture respectively, and then put them into a forced twin-shaft mixer to mix and stir to form a mixture, and the stirring time is 7 minutes;

[...

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Abstract

The invention relates to a road manhole cover made of waste residue and a preparation method thereof. Its characteristics are: calculated by weight percentage, it is composed of the following raw materials: 50%-60% of waste residue, 20%-30% of quartz sand, and 20%-30% of 500-grade cement. The preparation steps are: (1) mixing raw materials and 0.12% water to form a mixture; (2) digesting the mixture; (3) pressing and forming the manhole cover blank; (5) Carry out appearance and quality inspection, and stack them in grades; (6) Reuse after cleaning. The beneficial effects of the present invention are: the present invention uses the waste residue to make the road manhole cover, which not only avoids theft and loss because of no recycling value; but also has good compressive and flexural strength; it is also durable, and its preparation method is simple and easy OK.

Description

technical field [0001] The invention relates to a road manhole cover made of waste residue and a preparation method thereof. Background technique [0002] At present, the existing road manhole covers are generally made of cast iron. Because the materials have recycling value, they are often stolen and lost seriously, resulting in accidents of vehicle crashes and deaths. In order to solve the theft of the cast iron manhole cover, two methods are mainly adopted at present: the one is to install an anti-theft device on the cast iron manhole cover, but the cost is increased, but the problem cannot be fundamentally solved, and it brings inconvenience to the use, such as Chinese patent 93237579, 95241036, 96232738, 99227151 or the like; the 2nd, consider its no recycling value on the material, and such as Chinese patent 97202338, 97207516, 99231650.2 or the like. But they have the following problems: (1) The periphery of the road manhole cover made of reinforced concrete or fiber...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B14/06C04B18/12C04B18/14
CPCY02W30/91
Inventor 黄俞霖
Owner 黄俞霖
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