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Red mud water hard roadbase, roadbase material and preparation method of roadbase material

A technology of road base and red mud water, applied in the field of red mud hydraulic road base, road base material and its preparation, can solve the problems of cracking, high rigidity of road base, poor crack resistance, etc., to achieve strong crack resistance and long service life , the effect of improving mechanical strength

Active Publication Date: 2015-09-23
黄菁华 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The road base formed by fly ash gravel is a semi-rigid base, which has obvious hydraulic and retarding properties. However, once the aggregates, lime and fly ash are combined, the chemical reaction inside stops, and the road matrix formed is too rigid and easy to build. Cracked by temperature and humidity, poor crack resistance

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0022] The invention provides a preparation method of red mud hydraulic road base material, comprising the following steps:

[0023] A: In terms of mass percentage, weigh 80% to 95% of red mud and 20% to 5% of ordinary silicon cement, and mix and stir evenly to obtain the primary mixture.

[0024] Preferably, 85% to 93% of red mud and 15% to 7% of ordinary silicate cement are weighed;

[0025] Further preferably, 90% of the red mud and 10% of ordinary Portland cement are weighed, and the ordinary Portland cement is ordinary Portland cement.

[0026] The specific production process is as follows: weigh red mud, add it to a silo of the cement-stabilized soil mixing station, weigh ordinary silicon cement, and add it to another silo of the cement-stabilized soil mixing station; The material in the bin is added to the forced mixer, mixed and stirred evenly to obtain the primary mixture.

[0027] B: In terms of mass percentage, weigh 99.5% to 99.9% of the primary mixture and 0.5% ...

Embodiment 1

[0035] Embodiment 1 provides a kind of preparation method of red mud hydraulic road base material, comprises the following steps:

[0036] Take by weighing 80kg of red mud and 20kg of ordinary silicon cement, and mix and stir evenly to obtain the primary mix; weigh 49.75kg of the primary mix and 0.25kg of the red mud hydraulic curing agent (the components of the red mud hydraulic curing agent include: elastic styrene-acrylic emulsion 2kg, nanometer aluminum sol 3kg, the solid content of described elastic styrene-acrylic emulsion>55%), mix and stir evenly, obtain premix, and control the moisture content of premix 14%, obtain described red mud hydraulic road base Material.

[0037] The physical properties of the red mud hydraulic road base material were tested: the 7-day unconfined compressive strength was 2.2 MPa; the 28-day unconfined compressive strength was 7.6 MPa.

Embodiment 2

[0039] Embodiment 2 provides a kind of preparation method of red mud hydraulic road base material, comprises the following steps:

[0040] Take by weighing 95kg of red mud and 5kg of ordinary silicon cement, mix and stir evenly to obtain the primary mix; weigh 49.95kg of the primary mix, 0.05kg of red mud hydraulic curing agent (the components of red mud hydraulic curing agent include: elastic styrene-acrylic emulsion 4kg, nanometer aluminum sol 1kg, the solid content of described elastic styrene-acrylic emulsion>55%), mix and stir evenly, obtain premix, and control the moisture content of premix to 18%, obtain described red mud hydraulic road base Material.

[0041] The physical properties of the red mud hydraulic road base material were tested: the 7-day unconfined compressive strength was 3.5 MPa; the 28-day unconfined compressive strength was 8 MPa.

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Abstract

The invention discloses a red mud water hard roadbase, a roadbase material and a preparation method of the roadbase material, relating to the field of road engineering construction. The preparation method of the roadbase material comprises the steps of weighing 80% to 95% of red mud and 20% to 5% of ordinary portland cement, and mixing and stirring evenly to obtain an elementary mixed material; weighing 99.5% to 99.9% of the elementary mixed material and 0.5% to 0.1% of red mud water rigidness curing agent, mixing and stirring evenly to obtain a gunk, and controlling the moisture content of the gunk to be 14% to 18% to obtain the roadbase material, wherein the red mud water rigidness curing agent is formed by mixing the following components in mass percent: 40% to 80% of elastic styrene acrylic emulsion and 60% to 20% of nano alumina sol, and the solid content of the elastic styrene acrylic emulsion is greater than 55%. The roadbase adopts the roadbase material and is prepared according to a standard roadbase construction method. The red mud is used for producing the roadbase material, thus turning waste into wealth; the formed roadbase is high in crack resistance, difficult to corrode and long in service life.

Description

technical field [0001] The invention relates to the field of road engineering construction, in particular to a red mud hydraulic road base, a road base material and a preparation method thereof. Background technique [0002] Red mud is a waste produced by the alumina industry, and about 1.0-1.3 tons of red mud is produced for every 1 ton of alumina produced. Because the chemical bonds bound by red mud are difficult to remove, and the content is large, and it contains fluorine, aluminum and other impurities, it has been difficult to carry out harmless utilization of red mud. Red mud stockpiling not only requires a certain amount of infrastructure costs, but also takes up a lot of land and pollutes the environment. Because red mud contains a large amount of strong alkaline chemical substances, its pH value is still 11.25 to 11.50 after being diluted 10 times. The extremely high pH value determines the strong corrosion of red mud to organisms, metals, and siliceous materials; ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/14E01C3/04E01C21/00
CPCY02W30/91
Inventor 黄菁华陈江胡海森赵挺松谢思敏
Owner 黄菁华
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