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Steel slag and cement stabilized base material

A technology for water-stabilized base material and steel slag, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high brittleness, reduced pavement strength and service performance, and strong temperature and humidity sensitivity, etc. Achieve the effect of good board body, improve water permeability, and improve road service life

Active Publication Date: 2012-06-13
MCC BAOSTEEL TECH SERVICE
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, cement-stabilized crushed stone also has its inherent shortcomings: the main reason is that it is brittle, which leads to strong sensitivity to temperature and humidity, and it is easy to generate cracks due to temperature changes and humidity changes and reflect to the road surface, resulting in poor pavement strength. The performance is greatly reduced, resulting in cracks

Method used

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  • Steel slag and cement stabilized base material
  • Steel slag and cement stabilized base material
  • Steel slag and cement stabilized base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0025] Table 1 Material example formula (material weight ratio)

[0026]

[0027]

[0028] Additives are added at 5% by weight of cement.

[0029] Among them, the performance parameters of the steel slag aggregate in each embodiment are as follows:

[0030] Table 2

[0031] Steel slag aggregate process parameters

Example 1

Example 2

Example 3

f-CaO,%

3.81

3.15

2.97

f-MgO,%

2.76

2.03

1.88

SO 3 ,%

0.05

0.07

0.03

[0032] Among them, the type parameters of the components in each embodiment are as follows:

[0033] table 3

[0034]

[0035] The preparation of steel slag water-stable base layer includes the following steps:

[0036] a) Cushion treatment;

[0037] b) Weigh each raw material according to weight percentage;

[0038] c) Put the weighed raw materials in a forced mixer, add water and stir, about 10-15 minutes;

[0039] d) Paving, the thickness is 25-35cm;

[0040] e) Vibration compaction, repeated rolling;

[0041] f) Cover the film and spray water regular...

Embodiment 4-6

[0046] Table 5 Material example formula (material weight ratio)

[0047]

[0048] Additives are added at 5% by weight of cement. The types and performance parameters of other components are the same as in Example 1. The test results are as follows:

[0049] Table 6 Test results

[0050]

Embodiment 7-8

[0052] Table 7 Material example formula (material weight ratio)

[0053]

[0054] The types and performance parameters of each component are the same as in Example 1. The test results are as follows:

[0055] Table 8 Test results

[0056]

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Abstract

The invention provides a steel slag and cement stabilized base material comprising components of steel, cement, water, and an additive. The weight ratio of steel to cement to water is 100:4-6:4-6; and the weight of the additive is 0.6-6% of the weight of cement. According to the invention, graded steel slag serves as an aggregate, and is used for replacing crushed stones. The voids of the aggregate are filled by using a certain amount of a cementing material and the volume of enough mortar. The materials are paved and compacted according to an interlocking principle. The strength of the base is high. With increasing age periods, the base rapidly turns into a board body. Therefore, the material has high strength, high water permeability and high freezing resistance. The material can be used in road base constructions.

Description

Technical field [0001] The invention belongs to the field of new building materials, and specifically relates to a steel slag water-stable base material. Background technique [0002] The water-stable base (cement-stabilized base) has good mechanical properties and board properties. Its initial strength is high and its strength grows with age. Its mechanical strength can be adjusted according to engineering needs. Its characteristics are: high strength, good water stability, good frost resistance, erosion resistance, low temperature shrinkage and dry shrinkage. It is an excellent pavement base material. Therefore, it is widely used in the pavement structure of urban roads. It mainly undertakes the surface layer and the gravel base layer to protect the road and prolong the service life. At present, the domestic water-stable base layer mainly refers to the crushed stone water-stable base layer, which is a semi-rigid material base layer, which can be used as the base layer of expre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/14
CPCY02W30/91
Inventor 武传金金强杨刚刘国威王幼琴
Owner MCC BAOSTEEL TECH SERVICE
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