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Novel steel slag composite soil road base material and preparation method thereof

A technology for road base and base material, applied in the field of new steel slag mixed soil road base material and preparation, can solve problems such as poor stability, and achieve the effects of low expansion rate, good water stability and good durability

Inactive Publication Date: 2019-03-19
安徽马钢嘉华新型建材有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Based on the above reasons, the present invention aims at the problem of poor stability of unaged steel slag, mixes the composite agent, utilizes the silicon dioxide contained in it to chemically react with free calcium oxide in the steel slag to form digestion, and utilizes the slaked lime alkali in the composite agent to stimulate the potential gelation of steel slag; at the same time, add modifiers to ordinary soil and mix them

Method used

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  • Novel steel slag composite soil road base material and preparation method thereof
  • Novel steel slag composite soil road base material and preparation method thereof
  • Novel steel slag composite soil road base material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Select 50 parts of steel slag, 50 parts of soil, 3 parts of cement, 40 parts of compounding agent and 0.02 part of modifier, and prepare a new type of steel slag mixed soil road base material according to the following steps:

[0036] 1) After mixing steel slag, soil, cement and compounding agent, conduct a compaction test to measure the optimum moisture content;

[0037] 2) Screening the unaged steel slag for particle size, and crushing if the particle size is greater than 3.0 cm;

[0038] 3) weighing each component according to parts by weight, wherein the steel slag particle size is not more than 3.0cm;

[0039] 4) Spray the steel slag and the composite agent with tap water with a total water content of 50%, mix and mix them to make them fully contact, and obtain the slag powder mixture;

[0040] 5) Spray modifier in soil and mix remaining 50% tap water to obtain modified soil;

[0041] 6) mixing the slag-powder mixture and the modified soil for the second time to ...

Embodiment 2

[0050] Select 40 parts of steel slag, 60 parts of soil, 3 parts of cement, 40 parts of compounding agent and 0.020 parts of modifier, and prepare the new steel slag mixed soil road base material according to the following steps:

[0051] 1) After mixing steel slag, soil, cement and compounding agent, conduct a compaction test to measure the optimum moisture content;

[0052] 2) Screening the unaged steel slag for particle size, and crushing if the particle size is greater than 3.0 cm;

[0053] 3) weighing each component according to parts by weight, wherein the steel slag particle size is not more than 3.0cm;

[0054] 4) Spray the steel slag and the composite agent with tap water with a total water content of 50%, mix and mix them to make them fully contact, and obtain the slag powder mixture;

[0055] 5) Spray modifier in soil and mix remaining 50% tap water to obtain modified soil;

[0056] 6) mixing the slag-powder mixture and the modified soil for the second time to obta...

Embodiment 3

[0064] Select 50 parts of steel slag, 50 parts of soil, 3 parts of cement, 30 parts of compounding agent and 0.02 part of modifier, and prepare a new type of steel slag mixed soil road base material according to the following steps:

[0065] 1) After mixing steel slag, soil, cement and compounding agent, conduct a compaction test to measure the optimum moisture content;

[0066] 2) Screening the unaged steel slag for particle size, and crushing if the particle size is greater than 3.0 cm;

[0067] 3) weighing each component according to parts by weight, wherein the steel slag particle size is not more than 3.0cm;

[0068] 4) Spray the steel slag and the composite agent with tap water with a total water content of 50%, mix and mix them to make them fully contact, and obtain the slag powder mixture;

[0069] 5) Spray modifier in soil and mix remaining 50% tap water to obtain modified soil;

[0070] 6) mixing the slag-powder mixture and the modified soil for the second time to ...

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Abstract

The invention discloses a steel slag composite soil road base material and a preparation method thereof. The steel slag composite soil road base material contains the following materials in parts by weight: 0-15 parts of water, 40-80 parts of common soil, 20-60 parts of steel slag without ageing treatment, 5-25 parts of complexing agent, 1-5 parts of cement, and 0.01-0.05 part of modifying agent.The preparation method comprises the following steps: mixing the steel slag, the soil, the cement and the complexing agent and then performing a compaction test, and testing to obtain an optimal watercontent; smashing the steel slag; spraying tap water accounting for 50% of the total water amount, and sufficiently blending the steel slag with the complexing agent, to obtain a slag-powder mixture;spraying the modifying agent to the common soil and doping the redundant tap water, to obtain modified soil; blending and compacting the slag-powder mixture, the modified soil and Portland cement, toobtain a road base material. The steel slag composite soil road base material and the preparation method can sufficiently realize recycling of metallurgic solid water resource, and reduce pollution to the environment in the steel slag stacking and ageing process; also can effectively save the sandstone material, and avoid destruction of the ecological environment caused by sandstone material mining, and has remarkable economical and social benefits.

Description

technical field [0001] The invention relates to the technical field of road base material and its preparation, in particular to a novel steel slag mixed soil road base material and a preparation method. Background technique [0002] With the rapid development of the steel industry, the discharge of steel slag is increasing year by year. my country, as a major steel producer in the world, calculates that 0.2-0.5 tons of steel slag is produced for every ton of crude steel produced. The annual output of steel slag in my country is about 50 million tons, and the accumulated steel slag has reached more than 6 billion tons. A large amount of steel slag cannot be effectively disposed of, which not only occupies a large amount of land, pollutes the environment, but also causes a waste of resources; in addition, as the country attaches importance to environmental protection issues, the price of high-quality natural sand and gravel continues to rise. Stabilized gravel has a large dem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2111/0075C04B2111/27C04B2201/50C04B18/142C04B14/10C04B22/08C04B24/16C04B24/2641C04B24/26C04B22/064C04B18/141C04B18/08
Inventor 黄伟邱鹏赵鲁卿唐刚郭卫东王宗森
Owner 安徽马钢嘉华新型建材有限公司
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