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Bridge back backfill material prepared by curing and recycling waste sandy mud sediment and preparing method thereof

A mud and sediment technology, applied in the direction of solid waste management, climate sustainability, sustainable waste treatment, etc., can solve the problems of difficult recycling of EPS, environmental pollution, non-degradable, etc., to reduce the project cost and solve the difficulty of soil extraction , cheap effect

Inactive Publication Date: 2017-02-22
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EPS has good performance and is widely used in production and life, but EPS is difficult to recycle, resulting in a large amount of waste
Due to its relatively stable chemical properties, EPS cannot degrade or rot in the natural state for decades or even hundreds of years, causing serious pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment prepares bridge back filler according to the following steps:

[0029]Step 1: Take 1.5kg of representative mud sediment with natural moisture content, dry, crush and pass through a 2mm sieve, fully crush the mud sediment under the sieve, weigh 30% of the water and the crushed mud sediment by mass percentage Stir evenly to get the spare mud sediment;

[0030] Step 2: hand rubbing or crushing the waste foam blocks into granules; measuring the mass and volume of the standby mud sediment, weighing 12% cement by mass percentage, and weighing 60% foam particles by volume percentage;

[0031] Step 3: Add cement to the spare mud sediment and stir evenly, then add foam particles and stir well to obtain the prepared bridge back filling.

[0032] The test results of lightweight soil used as the backfill material of the bridge are as follows: the unconfined compressive strength is 480.7kPa, and the density is 1.24g / cm 3 , the CBR value is 11.4%.

[0033] The abov...

Embodiment 2

[0035] This embodiment prepares bridge back filler according to the following steps:

[0036] Step 1: Take 1.5kg of representative mud sediment with natural moisture content, dry, crush and pass through a 2mm sieve, fully crush the mud sediment under the sieve, weigh 30% of the water and the crushed mud sediment by mass percentage Stir evenly to get the spare mud sediment;

[0037] Step 2: hand rubbing or crushing the waste foam blocks into granules; measuring the mass and volume of the standby mud sediment, weighing 10% cement by mass percentage, and weighing 45% foam particles by volume percentage;

[0038] Step 3: Add cement to the spare mud sediment and stir evenly, then add foam particles and stir well to obtain the prepared bridge back filling.

[0039] The test results of light soil used as bridge back filling are as follows: the unconfined compressive strength is 479kPa, and the density is 1.38g / cm 3 , the CBR value is 11.4.

[0040] The above test results show that...

Embodiment 3

[0042] This embodiment prepares bridge back filler according to the following steps:

[0043] Step 1: Take 1.5kg of representative mud sediment with natural moisture content, dry, crush and pass through a 2mm sieve, fully crush the mud sediment under the sieve, weigh 30% of the water and the crushed mud sediment by mass percentage Stir evenly to get the spare mud sediment;

[0044] Step 2: hand rubbing or crushing the waste foam blocks into granules; measuring the mass and volume of the standby mud sediment, weighing 10% cement by mass percentage, and weighing 30% foam particles by volume percentage;

[0045] Step 3: Add cement to the spare mud sediment and stir evenly, then add foam particles and stir well to obtain the prepared bridge back filling.

[0046] The test results of the lightweight soil used as the bridge back filling are as follows: the unconfined compressive strength is 619.7kPa, and the density is 1.52g / cm 3 , the CBR value is 15.0.

[0047] The above test r...

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Abstract

The invention provides a bridge back backfill material prepared by curing and recycling waste sandy mud sediment and a preparing method thereof, characterized in that the bridge back backfill material is prepared from waste sandy mud sediment, cement and waste foam particles, wherein the cement accounts for 10-12% of the waste sandy mud sediment by weight, the waste foam particles account for 30-60% of the waste sandy mud sediment by volume. In the bridge back backfill material of the invention, the mud sediment acts as a framework, the cement acts for curing the mud sediment, and the waste foam particles act for decreasing the self-weight of the backfill material; the preparing method of the invention is simple, and is low in cost, low in resource consumption and easy to popularize.

Description

technical field [0001] The invention specifically relates to resource utilization of engineering waste mud sediment and waste foam, and belongs to the fields of environmental protection material preparation methods and waste comprehensive utilization methods. Background technique [0002] Since the reform and opening up, my country's highway construction has developed by leaps and bounds, and the "Twelfth Five-Year Plan" period is an extraordinary five years in the development of my country's transportation. The road network continues to expand. The total mileage of national roads has reached 4.57 million kilometers. 81% of the official villages in the western region are unimpeded, and 96% of the country's counties are connected by roads of grade two or above. As the main link of various roads, bridges have played a decisive role in the transportation industry. The erection of bridges has given people a broader space for exploration. With the rapid development of road netwo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B16/08C04B18/16
CPCC04B28/04C04B2111/0075C04B2201/20C04B2201/50C04B18/16C04B16/08Y02W30/91
Inventor 储诚富郭坤龙叶浩赵辉董满生
Owner HEFEI UNIV OF TECH
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