Furnace slag water-stable base material and preparation method thereof

A water-stabilized base material and slag technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as insignificant economic value, reduce pavement cracks and diseases, save mineral resources, and save stacking The effect of the venue

Inactive Publication Date: 2016-07-06
JIANGSU SINOROAD ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is still a relatively extensive application, and the economic value is not obvious

Method used

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  • Furnace slag water-stable base material and preparation method thereof
  • Furnace slag water-stable base material and preparation method thereof
  • Furnace slag water-stable base material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The slag is pretreated to remove metal substances. The slag is mechanically screened and the dissolved salt content is detected. The particle size of 0-5mm is used, and the particle size above 5mm is not used; the gradation composition of the slag aggregate after pretreatment is shown in Table 1. The gravel is divided into three particle sizes, namely 5-10mm, 10-20mm and 20-31.5mm. After mixing, the weight percentages of cement, slag and gravel are shown in Table 2.

[0025] Table 1 Gradation composition of slag aggregates after pretreatment

[0026] Sieve hole(mm)

19

9.5

4.75

2.36

0.6

0.075

Passing rate(%)

100

90.2

75.0

54.8

30.1

1.8

[0027] Table 2 weight percentage of each material

[0028]

[0029] The preparation method of slag water stabilized base material comprises the following steps:

[0030] 1) Put the pretreated slag, crushed stone, cement and water into the water stabilization soil ...

Embodiment 2

[0033] The slag is pretreated to remove metal substances, the slag is mechanically screened, and the dissolved salt content is detected. The particle size of 0-5mm is used, and the particle size above 5mm is not used; the gradation composition of the slag aggregate after pretreatment is shown in Table 3 The gravel is divided into four particle sizes, namely 3-5mm, 5-10mm, 10-20mm, and 20-31.5mm. After mixing, the weight percentage of each material is shown in Table 4.

[0034] Table 3 Gradation composition of slag aggregate after pretreatment

[0035] Sieve hole(mm)

19

9.5

4.75

2.36

0.6

0.075

Passing rate(%)

100

98.7

77.9

58.7

23.1

2.0

[0036] Table 4 weight percentage of each specification material

[0037]

[0038] The preparation method of slag water stabilized base material comprises the following steps:

[0039] 1) Put the pretreated slag, gravel, cement and water into the water stabilization soil...

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Abstract

The invention discloses a furnace slag water-stable base material and a preparation method thereof. The furnace slag water-stable base material is formed by mixing a dry material and water. The dry material comprises the following components in percentage by weight: 3-5% of cement, 20-35% of furnace slag and 65-75% of macadam. The water accounts for 3.5-5.5 wt% of the dry material. The furnace slag is used instead of fine aggregate, thereby reducing the probability of cracking caused by temperature shrinkage when the cement content and water-stable base are reduced. The solid waste is used as the fine aggregate in the water-stable base material, thereby changing wastes into valuable substances, saving the waste piling site and saving the mineral resources of macadam production. The furnace slag material is pretreated, so that the heavy metal content and leaching toxicity are lower than the standard values. The furnace slag water-stable base material is applicable to the water-stable base with higher economic value, and lowers the engineering cost.

Description

technical field [0001] The invention relates to a road material, in particular to a slag water stabilized base material and a preparation method thereof. Background technique [0002] The proportion of waste incineration accounts for a large proportion of domestic waste treatment. With the limited land resources, the proportion of waste treatment by incineration is increasing. As a kind of solid waste, slag has complex components and is difficult to process and utilize. It is piled up in large quantities and seriously pollutes the environment, occupying valuable land resources. [0003] Water-stabilized base is the main material of pavement engineering in my country, and the amount of crushed stone is generally about 95%. With the depletion of mineral resources, the supply of crushed stone is tight, and the cost of use is increasing day by day. The invention patent with the application number "200410016076.X" discloses that domestic waste incineration slag replaces soil sou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/02C04B18/10
CPCC04B28/04C04B2111/0075C04B18/10C04B14/02C04B20/0076Y02W30/91
Inventor 唐建亚张万磊成相飞张伟
Owner JIANGSU SINOROAD ENG TECH RES INST CO LTD
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