CN101121590A - Steel slag coal ash self-cementing material - Google Patents

Steel slag coal ash self-cementing material Download PDF

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Publication number
CN101121590A
CN101121590A CNA2007100526816A CN200710052681A CN101121590A CN 101121590 A CN101121590 A CN 101121590A CN A2007100526816 A CNA2007100526816 A CN A2007100526816A CN 200710052681 A CN200710052681 A CN 200710052681A CN 101121590 A CN101121590 A CN 101121590A
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China
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slag
flyash
coal ash
cementing material
steel slag
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CN100515985C (en
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沈卫国
周明凯
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/10—Accelerators; Activators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00103—Self-compacting mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Road Paving Structures (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The present invention belongs to a building material, in particular to a self-concretion material of steel residue powder and coal ash. The self-concretion material of steel residue powder and coal ash is characterized in that: the material is made of the mixing with steel residue, coal ash powder, industrial waste gypsum and alkaline catalyzer; the molar of the industrial waste gypsum is 1-15 percent of the total molar of the steel residue, coal ash powder, industrial waste gypsum and alkaline catalyzer; the molar of the alkaline catalyzer is 0-3 percent of the total molar of the steel residue, coal ash powder, industrial waste gypsum and alkaline catalyzer; the molar ratio between the steel residue and the coal ash powder is 1: 2-4: 1. (The material can not only be used alone, but also be used for stabilizing the road base of detritus and grit and the building brick.) The material is characterized in low cost.

Description

Steel slag coal ash self-cementing material
Technical field
The invention belongs to material of construction, be specifically related to a kind of steel slag coal ash self-cementing material.
Background technology
The generation of the slag of China, flyash, industrial waste gypsum is big, make a low multiple use, the economic benefit and with low content of technology of comprehensive utilization, research and development are eaten quantity of slag industrial residue method of comprehensive utilization big and that have a higher technico-economical comparison and are had important economic benefit and environmental benefit.Slag is to extract impurity and a large amount of waste residue that generates with slag formers such as lime or fluorites in the Steel industry, contains C in the slag of high basicity 2S, C 3S, C 4Hydraulicity mineral such as A and silicon, aluminium matter vitreum, thereby have the good hydraulicity and latent hydraulicity.Owing to contain a large amount of f-CaO and a certain amount of Fe in the slag, so its stability and grindability are relatively poor, and these have all greatly influenced Multipurpose Utilization of Steel Slag.Though be used for the applied research of manufacture of cement about slag very many, but practical efficiency is less than 10% still, slag is used for reclamation work in a large number at present, carry out with the research of cement, lime or lime-flyash stabilization slag using it as road base material is existing at home and abroad, but these researchs do not make full use of the hydraulically active of slag self, all need to mix gelling material such as a certain amount of cement or lime.
Summary of the invention
The object of the present invention is to provide the low steel slag coal ash self-cementing material of a kind of cost.
To achieve these goals, technical scheme of the present invention is: steel slag coal ash self-cementing material, it is characterized in that it is mainly mixed by slag, flyash, industrial waste gypsum and alkali-activator raw material, the mass percent of the shared slag of industrial waste gypsum, flyash, industrial waste gypsum and alkali-activator raw material is: 1%-15%, the mass percent of the shared slag of alkali-activator, flyash, industrial waste gypsum and alkali-activator raw material is: 0-3%, the mass ratio of slag and flyash=1: 2-4: 1.
Described raw material is made up of slag, flyash, industrial waste gypsum, alkali-activator and rubble (or gravel), the mass percent of slag and the shared raw material of flyash is: 30%-50%, the mass percent of the shared raw material of industrial waste gypsum is: 1%-10%, the mass percent of the shared raw material of alkali-activator is: 0-3%, the mass percent of the shared raw material of rubble (or gravel) is: 40%-69%, the wherein mass ratio of slag and flyash=1: 2-4: 1.
Described slag is basicity factor (CaO/SiO 2) be not less than 1.6 and have good hydraulically active and through the stabile original state slag of ageing.
Described flyash is adding calcium fly ash, high-calcium fly ass or low calcium fly ash.
Described industrial waste gypsum is phosphogypsum, fluorgypsum, Huangshi cream, saline gypsum, dihydrate gypsum, solid sulphur slag or desulfurated plaster.
Described alkali-activator is any one or any one the above mixture in sodium hydroxide, sodium sulfate, yellow soda ash, the water glass, during any one above mixing, is any proportioning.
The preparation method of above-mentioned steel slag coal ash self-cementing material, (described original state is not ground, i.e. original-shape to choose original state slag after ageing is stable by proportioning; Described ageing is stable to be ordinary method), choose flyash, industrial waste gypsum and alkali-activator by proportioning, mix to stir promptly getting product.
The application of described steel slag coal ash self-cementing material: get the water of steel slag coal ash self-cementing material quality 6-25%, mix, make highway road surface material or building brick.More than the different 95%-98% of being controlled at of compactness when steel slag coal ash self-cementing material is made the ground subsoil layer material according to road quality classification and layer of structure.Compactness during steel slag coal ash self-cementing material using it as road base material: according to different being controlled at 97%-99% more than of road quality classification with basic unit's level.Forming pressure was at 12-22MPa when steel slag coal ash self-cementing material was made building brick.
The invention has the beneficial effects as follows: utilize original state slag, flyash and industrial waste gypsum to prepare steel slag coal ash self-cementing material, slag, utilization of fly ash rate height, cost is low; And the cost of industrial waste gypsum is also low, so the present invention has the characteristics of cost.Steel slag coal ash self-cementing material not only can be saved construction costs in a large number, can also reduce the exploitation to the natural earth building stones, has very significantly environmental benefit.Steel slag coal ash self-cementing material does not need gellings such as cement and lime, forms by industrial residue fully, and be the cheap ecological architectural material of a class, technical economic benefit is remarkable.
The present invention utilizes good hydraulically active and the pozzolanic activity of flyash and the excitation of micro aggregate effect and industrial waste gypsum (or adding alkali-activator again) of slag, forms a kind of novel steel slag coal ash self-cementing material with higher-strength.Steel slag coal ash self-cementing material of the present invention mixes with water, through rolling or mechanical compaction, prepare fixed by the gelation activity of industrial residue self fully and self-cementing material that form, this cementing material can reach the requirement of strength of each grade ground subsoil layer, basic unit, and the part material proportioning can reach the requirement of strength of 50-75 building brick.The present invention can be used for the basic unit and the subbase of each standard highway and the urban road and the piece of smooth land, and the preparation building brick.It is stable to have gain in strength, good endurance, the characteristics that splitting resistance is strong.
Embodiment
Embodiment 1:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and Huangshi cream raw material, the mass percent of the shared slag of Huangshi cream, flyash and Huangshi cream is: 5.0%, the mass percent of the shared slag of slag and flyash, flyash and Huangshi cream is: 95.0%, and the mass ratio of slag and flyash=1: 1; Mix to such an extent that steel slag coal ash is tied material certainly together.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 19% of a steel slag coal ash self-cementing material quality, maximum dry density 1.56g/cm 3, when compactness was 97%, 7 days intensity was 1.95MPa, intensity was 8.14MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material, and had reached the requirement of strength of No. 50 building bricks.
Embodiment 2:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and fluorgypsum raw material, the mass percent of the shared slag of fluorgypsum, flyash and fluorgypsum is: 2.5%, the mass percent of the shared slag of slag and flyash, flyash and fluorgypsum is: 97.5%, and the mass ratio of slag and flyash=1: 2; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 24% of a steel slag coal ash self-cementing material quality, maximum dry density 1.48g/cm 3, when compactness was 97%, 7 days intensity was 1.67MPa, intensity was 5.98MPa in 28 days, had reached the requirement of strength of highway road surface material.
Embodiment 3:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and desulfurated plaster raw material, the mass percent of the shared slag of desulfurated plaster, flyash and desulfurated plaster is: 3.5%, the mass percent of the shared slag of slag and flyash, flyash and desulfurated plaster is: 96.5%, and the mass ratio of slag and flyash=3: 2; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 16% of a steel slag coal ash self-cementing material quality, maximum dry density 1.68g/cm 3, when compactness was 97%, 7 days intensity was 1.92MPa, intensity was 7.87MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material, and had reached the requirement of strength of No. 50 building bricks.
Embodiment 4:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and dihydrate gypsum powder raw material, the mass percent of the shared slag of dihydrate gypsum powder, flyash and dihydrate gypsum powder is: 5.0%, the mass percent of the shared slag of slag and flyash, flyash and dihydrate gypsum powder is: 95%, and the mass ratio of slag and flyash=3: 2; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 16% of a steel slag coal ash self-cementing material quality, maximum dry density 1.68g/cm 3, when compactness was 97%, 7 days intensity was 1.78MPa, intensity was 7.98MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material, and had reached the requirement of strength of No. 50 building bricks.
Embodiment 5:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and dihydrate gypsum powder raw material, the mass percent of the shared slag of dihydrate gypsum powder, flyash and dihydrate gypsum powder is: 2.5%, the mass percent of the shared slag of slag and flyash, flyash and dihydrate gypsum powder is: 97.5%, and the mass ratio of slag and flyash=3: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 14% of a steel slag coal ash self-cementing material quality, maximum dry density 1.94g/cm 3, when compactness was 97%, 7 days intensity was 1.36MPa, intensity was 6.17MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material, and had reached the requirement of strength of No. 50 building bricks.
Embodiment 6:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and phosphogypsum raw material, the mass percent of the shared slag of phosphogypsum, flyash and phosphogypsum is: 3.5%, the mass percent of the shared slag of slag and flyash, flyash and phosphogypsum is: 96.5%, and the mass ratio of slag and flyash=3: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 12% of a steel slag coal ash self-cementing material quality, maximum dry density 2.00g/cm 3, when compactness was 97%, 7 days intensity was 1.45MPa, intensity was 7.46MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material, and had reached the requirement of strength of No. 50 building bricks.
Embodiment 7:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash, rubble and phosphogypsum raw material, the mass percent of the shared slag of phosphogypsum, flyash, rubble and phosphogypsum is: 3.0%, the mass percent of the shared slag of rubble, flyash, rubble and phosphogypsum is: 50%, the mass percent of the shared slag of slag and flyash, flyash, rubble and phosphogypsum is: 47%, and the mass ratio of slag and flyash=1: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 6% of a steel slag coal ash self-cementing material quality, maximum dry density 2.23g/cm 3, when compactness was 98%, 7 days intensity was 2.47MPa, intensity was 5.39MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material.
Embodiment 8:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash, gravel and phosphogypsum raw material, the mass percent of the shared slag of phosphogypsum, flyash, gravel and phosphogypsum is: 1.0%, the mass percent of the shared slag of gravel, flyash, gravel and phosphogypsum is: 69%, the mass percent of the shared slag of slag and flyash, flyash, gravel and phosphogypsum is: 30%, and the mass ratio of slag and flyash=1: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 5.5% of a steel slag coal ash self-cementing material quality, maximum dry density 2.28g/cm 3, when compactness was 98%, 7 days intensity was 2.14MPa, intensity was 3.32MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material.
Embodiment 9:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash, gravel and phosphogypsum raw material, the mass percent of the shared slag of phosphogypsum, flyash, gravel and phosphogypsum is: 3.0%, the mass percent of the shared slag of gravel, flyash, gravel and phosphogypsum is: 50%, the mass percent of the shared slag of slag and flyash, flyash, gravel and phosphogypsum is: 49%, and the mass ratio of slag and flyash=1: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 6.2% of a steel slag coal ash self-cementing material quality, maximum dry density 2.23g/cm 3, when compactness was 98%, 7 days intensity was 2.21MPa, intensity was 3.02MPa in 28 days, had reached the requirement of strength of high grade highway pavement subbase course material.
Embodiment 10:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and desulfurated plaster raw material, the mass percent of the shared slag of desulfurated plaster, flyash and desulfurated plaster is: 5.0%, the mass percent of the shared slag of slag and flyash, flyash and desulfurated plaster is: 95%, and the mass ratio of slag and flyash=1: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 19% of a steel slag coal ash self-cementing material quality, maximum dry density 1.56g/cm 3, when compactness was 97%, 7 days intensity was 1.78MPa, intensity was 8.47MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material, and had reached the requirement of strength of No. 75 building bricks.
Embodiment 11:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and solid sulphur slag raw material, Gu the mass percent of the shared slag of sulphur slag, flyash and solid sulphur slag is: 12.5%, the mass percent of the shared slag of slag and flyash, flyash and solid sulphur slag is: 87.5%, and the mass ratio of slag and flyash=1: 2; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 25% of a steel slag coal ash self-cementing material quality, maximum dry density 1.45g/cm 3, when compactness was 97%, 7 days intensity was 1.79MPa, intensity was 7.84MPa in 28 days, had reached the requirement of strength of highway road surface material, had reached the requirement of strength of No. 50 building bricks.
Embodiment 12:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and saline gypsum raw material, the mass percent of the shared slag of saline gypsum, flyash and saline gypsum is: 2.5%, the mass percent of the shared slag of slag and flyash, flyash and saline gypsum is: 97.5%, and the mass ratio of slag and flyash=1: 2; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 24% of a steel slag coal ash self-cementing material quality, maximum dry density 1.48g/cm 3, when compactness was 97%, 7 days intensity was 1.72MPa, intensity was 9.04MPa in 28 days, had reached the requirement of strength of highway pavement subbase course material, and had reached the requirement of strength of No. 75 building bricks.
Embodiment 13:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash, yellow soda ash and saline gypsum raw material, the mass percent of the shared slag of saline gypsum, flyash, yellow soda ash and saline gypsum is: 2.5%, the mass percent of the shared slag of yellow soda ash, flyash, yellow soda ash and saline gypsum is: 2.5%, the mass percent of the shared slag of slag and flyash, flyash, yellow soda ash and saline gypsum is: 95%, and the mass ratio of slag and flyash=3: 2; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 16% of a steel slag coal ash self-cementing material quality, maximum dry density 1.68g/cm 3, when compactness was 97%, 7 days intensity was 2.13MPa, intensity was 9.35MPa in 28 days, had reached the requirement of strength of high grade highway pavement base material, and had reached the requirement of strength of No. 75 building bricks.
Embodiment 14:
Steel slag coal ash self-cementing material, it is by slag, flyash, sodium sulfate, yellow soda ash and saline gypsum raw material mix, the shared slag of saline gypsum, flyash, sodium sulfate, the mass percent of yellow soda ash and saline gypsum is: 2.5%, the shared slag of yellow soda ash, flyash, sodium sulfate, the mass percent of yellow soda ash and saline gypsum is: 1.5%, the shared slag of sodium sulfate, flyash, sodium sulfate, the mass percent of yellow soda ash and saline gypsum is: 1.5%, the shared slag of slag and flyash, flyash, sodium sulfate, the mass percent of yellow soda ash and saline gypsum is: 94.5%, and the mass ratio of slag and flyash=1: 2; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 24% of a steel slag coal ash self-cementing material quality, optimum moisture content 24%, maximum dry density 1.48g/cm 3, when compactness was 97%, 7 days intensity was 1.89MPa, intensity was 9.62MPa in 28 days, had reached the requirement of strength of highway pavement subbase course material, and had reached the requirement of strength of No. 75 building bricks.
Embodiment 16:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash and fluorgypsum raw material, the mass percent of the shared slag of fluorgypsum, flyash and fluorgypsum is: 15%, the mass percent of the shared slag of slag and flyash, flyash and fluorgypsum is: 85%, and the mass ratio of slag and flyash=4: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 12% of a steel slag coal ash self-cementing material quality, maximum dry density 2.08g/cm 3, when compactness was 97%, 7 days intensity was 1.84MPa, intensity was 6.83MPa in 28 days, had reached the requirement of strength of highway road surface material.
Embodiment 17:
Steel slag coal ash self-cementing material, it is mixed by slag, flyash, sodium hydroxide and fluorgypsum raw material, the mass percent of the shared slag of fluorgypsum, flyash, sodium hydroxide and fluorgypsum is: 10%, the mass percent of the shared slag of sodium hydroxide, flyash, sodium hydroxide and fluorgypsum is: 3%, the mass percent of the shared slag of slag and flyash, flyash, sodium hydroxide and fluorgypsum is: 87%, and the mass ratio of slag and flyash=2: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 16% of a steel slag coal ash self-cementing material quality, maximum dry density 1.71g/cm 3, when compactness was 97%, 7 days intensity was 2.17MPa, intensity was 9.62MPa in 28 days, had reached the requirement of strength of highway road surface material and No. 75 building bricks.
Embodiment 18:
Steel slag coal ash self-cementing material, it is by slag, flyash, rubble, sodium hydroxide and fluorgypsum raw material mix, the shared slag of fluorgypsum, flyash, rubble, the mass percent of sodium hydroxide and fluorgypsum is: 10%, the shared slag of sodium hydroxide, flyash, rubble, the mass percent of sodium hydroxide and fluorgypsum is: 3%, the shared slag of rubble, flyash, rubble, the mass percent of sodium hydroxide and fluorgypsum is: 40%, the shared slag of slag and flyash, flyash, rubble, the mass percent of sodium hydroxide and fluorgypsum is: 47%, and the mass ratio of slag and flyash=2: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 8% of a steel slag coal ash self-cementing material quality, maximum dry density 2.21g/cm 3, when compactness was 97%, 7 days intensity was 1.86MPa, intensity was 6.46MPa in 28 days, had reached the requirement of strength of highway road surface material.
Embodiment 19:
Steel slag coal ash self-cementing material, it is by slag, flyash, gravel, water glass and fluorgypsum raw material mix, the shared slag of fluorgypsum, flyash, gravel, the mass percent of water glass and fluorgypsum is: 10%, the shared slag of water glass, flyash, gravel, the mass percent of water glass and fluorgypsum is: 3%, the shared slag of gravel, flyash, gravel, the mass percent of water glass and fluorgypsum is: 40%, the shared slag of slag and flyash, flyash, gravel, the mass percent of water glass and fluorgypsum is: 47%, and the mass ratio of slag and flyash=2: 1; Mix steel slag coal ash self-cementing material.
Steel slag coal ash self-cementing material and water mix, and the add-on of water is 16% of a steel slag coal ash self-cementing material quality, maximum dry density 1.71g/cm 3, when compactness was 97%, 7 days intensity was 2.49MPa, intensity was 10.28MPa in 28 days, had reached the requirement of strength of highway road surface material and No. 75 building bricks.
The upper lower limit value of each raw material of the present invention, with and interval value can both realize the present invention, do not enumerate embodiment one by one at this.

Claims (6)

1. steel slag coal ash self-cementing material, it is characterized in that it is mainly mixed by slag, flyash, industrial waste gypsum and alkali-activator raw material, the mass percent of the shared slag of industrial waste gypsum, flyash, industrial waste gypsum and alkali-activator raw material is: 1%-15%, the mass percent of the shared slag of alkali-activator, flyash, industrial waste gypsum and alkali-activator raw material is: 0-3%, the mass ratio of slag and flyash=1: 2-4: 1.
2. steel slag coal ash self-cementing material according to claim 1, it is characterized in that: described raw material is made up of slag, flyash, industrial waste gypsum, alkali-activator and rubble (or gravel), the mass percent of slag and the shared raw material of flyash is: 30%-50%, the mass percent of the shared raw material of industrial waste gypsum is: 1%-10%, the mass percent of the shared raw material of alkali-activator is: 0-3%, the mass percent of the shared raw material of rubble (or gravel) is: 40%-69%, the wherein mass ratio of slag and flyash=1: 2-4: 1.
3. steel slag coal ash self-cementing material according to claim 1 and 2 is characterized in that: described slag be basicity factor be not less than 1.6 through the stabile original state slag of ageing.
4. steel slag coal ash self-cementing material according to claim 1 and 2 is characterized in that: described flyash is adding calcium fly ash, high-calcium fly ass or low calcium fly ash.
5. steel slag coal ash self-cementing material according to claim 1 and 2 is characterized in that: described industrial waste gypsum is phosphogypsum, fluorgypsum, Huangshi cream, saline gypsum, dihydrate gypsum, solid sulphur slag or desulfurated plaster.
6. steel slag coal ash self-cementing material according to claim 1 and 2, it is characterized in that: described alkali-activator is any one or any one the above mixture in sodium hydroxide, sodium sulfate, yellow soda ash, the water glass, during any one above mixing, be any proportioning.
CNB2007100526816A 2007-07-10 2007-07-10 Steel slag coal ash self-cementing material Expired - Fee Related CN100515985C (en)

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