CN106518153A - Foamed concrete building block mainly prepared from phosphogypsum hydraulic composite binding material and preparation method thereof - Google Patents

Foamed concrete building block mainly prepared from phosphogypsum hydraulic composite binding material and preparation method thereof Download PDF

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Publication number
CN106518153A
CN106518153A CN201610925899.7A CN201610925899A CN106518153A CN 106518153 A CN106518153 A CN 106518153A CN 201610925899 A CN201610925899 A CN 201610925899A CN 106518153 A CN106518153 A CN 106518153A
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CN
China
Prior art keywords
weight
ardealite
water
composite gel
concrete block
Prior art date
Application number
CN201610925899.7A
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Chinese (zh)
Inventor
孙振平
曾文波
郭二飞
刘毅
杨旭
张世杰
Original Assignee
同济大学
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Priority to CN201610925899.7A priority Critical patent/CN106518153A/en
Publication of CN106518153A publication Critical patent/CN106518153A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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
    • C04B28/142Compositions 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
    • C04B28/143Compositions 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 the synthetic calcium sulfate being phosphogypsum
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20Mortars, concrete or artificial stone characterised by specific physical values for the density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention belongs to the technical field of construction materials, and discloses a foamed concrete building block mainly prepared from a phosphogypsum hydraulic composite binding material and a preparation method thereof. The foamed concrete building block is prepared from cement, phosphogypsum, pulverized fuel ash, slag powder, mountain flour, fiber, water, a compound type foaming agent, a water reducing agent and a coagulation accelerator. First, the cement, the phosphogypsum, the pulverized fuel ash, the slag powder, the mountain flour and the fiber are uniformly mixed; afterwards, uniform slurry obtained after the water, the water reducing agent and the coagulation accelerator are sufficiently agitated is added into an obtained first mixture; afterwards, the compound type foaming agent is added into the slurry; an obtained second mixture is quickly put into a die and is molded after being rapidly agitated; the foamed concrete building block can be obtained through normal-temperature maintenance. According to a product provided by the invention, solid waste phosphogypsum is used largely; binding materials of the cement and the like are saved; the production cost is decreased; meanwhile, the compound type foaming agent is adopted for foaming; air bubbles are many and uniform and are also further relatively independent, so that the foamed concrete building block difficultly generates shrinkage, sinking, collapsing and deformation in making and maintenance processes; the performance of a light weight, favorable heat-preservation and thermal-insulation effects, and the like can be realized.

Description

A kind of foam concrete block based on ardealite hydraulicity composite gel material and Its preparation method
Technical field
The invention belongs to building material technical field, and in particular to one kind is based on ardealite hydraulicity composite gel material Foam concrete block and preparation method thereof.
Background technology
Building energy conservation has become realization " 20 as China environmental protection and the main contents of energy saving policy One of important measures of the century strategy of sustainable development ".With the continuous development of economic and technical, China's Building Energy-saving Work Also achieve huge achievement.The peripheral structure being made up of roofing, body of wall, ground and door and window is the most main of building energy consumption loss Part, wherein exterior wall area larger (the about gross area 45%) are wanted, its energy consumption for causing of heat transfer accounts for 25%, therefore, improve body of wall Insulation plays vital effect to building energy conservation.
For the selection of external-wall heat-insulation material, strict implement State Council is answered《Green building action scheme》Indicative spirit and state Mark GB8624-2012《Construction material and product burns grading performance》Mandatory standard, insulation material should be energy-efficient, again Fire safety reliability.Foam concrete block self heat insulation wall be with current China's Developing Energy-saving Construction need and produce it is new Type materials for wall, belongs to building structure and building energy conservation integrated technique.
Foamed concrete also known as foam concrete, are that the gases such as air are introduced concrete by way of chemically or physically In slurry, then formed containing a large amount of holes through shaping, maintenance and there is the concrete product of some strength.It belongs to bubble Shape heat-insulating material, outstanding feature are the foam holes that a large amount of closings are formed in inside concrete, make concrete have light weight, thermal insulation separation The performance such as heat, sound insulation, nonflammable, is a kind of construction material of energy-conserving and environment-protective.Replace traditional organic with foam concrete block Filling materials for wall body and insulation material, it is A1 level energy-saving heat preserving requirements both to have reached fire-protection rating, and reaching energy-saving safe fire prevention again will Ask, more reach environment protection requirement, eliminate security hidden trouble.
Ardealite is the solid industrial discarded object of wet production phosphate fertilizer, often produces the ardealite that 1t phosphoric acid about produces 5t. Existing nearly 300,000,000 t of ardealite that China piles up at present, and due to the use of high concentration phosphate fertilizer, the annual new phosphorus stone for producing in the whole nation The up to ten million tons of cream.Currently, most of enterprise by ardealite air storage, not only floor space is wide, investment is big, slag is costly, And long-term air storage, due to scrubbing for rainwater so that free phosphorus, fluorine and metal ion, the radiation contained in ardealite Contaminated soil and the water sources such as property element, cause environmental pollution.Although country encourage enterprise by ardealite eat it is dry bleed, due to political affairs The consideration of plan, technology and economic aspect, the enthusiasm of enterprise be not high, causes the utilization rate of the annual ardealite of China to there was only 20%- 30%.From preserving the ecological environment and angle of developing a circular economy, develop the more valuable comprehensive Utilization Ways of ardealite and compel In the eyebrows and eyelashes.
The present invention is aided with cement, flyash, breeze and stone flour etc. with ardealite as major gelled material, prepares foaming mixed Solidifying earth building blocks, ardealite of can dissolving in a large number save cement and other Binder Materials, reduces cost;Use composite foamed simultaneously Agent is foamed, and makes bubble more uniform and stable, improves the performances such as foaming concrete lightweight, insulation.Product of the present invention Can be not only used for the insulation on body of wall, roofing and ground, it can also be used to underground backfill, foundation engineering etc., with good society Benefit, economic benefit and environmental benefit.
The content of the invention
It is an object of the invention to provide a kind of process is simple, cost be relatively low, ardealite utilization rate high and better performances Foam concrete block and preparation method thereof.
A kind of foam concrete block based on ardealite hydraulicity composite gel material proposed by the present invention, by water Mud, ardealite, flyash, slag powders, stone flour, fiber, water, compound foaming agent, water reducer and coagulant composition, each component Weight ratio is:
Cement 20-40
Ardealite 50-150
Flyash 15-25
Slag powders 15-35
Stone flour 10-15
Fiber 0.2-0.6
Water 40-80
Compound foaming agent 2-8
Water reducer 0.2-0.6
Coagulant 1-3
In the present invention, the cement is P O42.5 level Portland cements.
In the present invention, the ardealite is high concentration phosphate fertilizer enterprise using the solid waste during Wet-process phosphoric acid (WPPA) Thing, 200 mesh sieves are crossed after drying is broken can be used.
In the present invention, the flyash be I level high-calcium fly asses, its free calcium oxide content≤3.0%, loss on ignition≤ 5.0%。
In the present invention, the slag powders are S95 slag powders or the one kind in S105 slag powders.
In the present invention, the stone flour is the powder produced in stone machining processing, after drying, grinding crosses 200 mesh sieves Can use.
In the present invention, the fiber is the one kind in polypropylene fibre and string.
In the present invention, the water be running water, reclaim in water, containing the one kind in alkali waste water, river.
In the present invention, the compound foaming agent is by 50 weight portion of Tea Saponin, 20 weight portion of lauryl sodium sulfate, gathers 10 weight portion of ethylene glycol, 10 weight portion of gelatin and 10 weight portion of carboxymethylcellulose calcium are uniformly mixed at normal temperatures and form.
In the present invention, the water reducer is polycarboxylate high performance water-reducing agent.
In the present invention, the coagulant is by sodium sulphate, calcium chloride and triethanolamine according to 5: 3: 2 weight than compounding Into.
A kind of preparation of foam concrete block based on ardealite hydraulicity composite gel material proposed by the present invention Method, comprises the following steps that:
(1) by cement, ardealite, flyash, slag powders, stone flour and fiber according to part by weight weighing, then by solid powder Adding in mixer with fiber carries out one-level stirring, low rate mixing (2-3) minute, is well mixed solid powder and fiber;
(2) water, water reducer and the coagulant of corresponding part by weight are added in the powder after above-mentioned being well mixed, is then entered rapidly Two grades of stirrings of row, quick stirring (1-2) minute, are obtained the uniform sizing material before foaming;
(3) compound foaming agent of corresponding part by weight is added in the slurry Jing after two grades of stirrings, three-level is then carried out rapidly Then foam slurry is poured into in-mold molding rapidly by stirring, quick stir about 1 minute, stands (1-2) hour;
(4) by step(3)After foamed concrete after middle standing (1-2) hour moves to normal temperature curing box maintenance (12-24) hour The demoulding, the building block after the demoulding continue maintenance to 7d and 28d.
The beneficial effects of the present invention is:On the one hand foam concrete block insulation is prepared using solid waste phosphogypsum Material, is advantageously implemented the recycling of ardealite;On the other hand cement and other admixtures are saved, production is reduced and is built The cost of energy-saving material is built, is conducive to advancing China's building energy conservation and environmental protection.Product of the present invention can be not only used for body of wall, roofing And ground insulation, can also be used for underground backfill, foundation engineering etc., with good social benefit, economic benefit and ring Protect benefit.
Compared with present technology, the invention has the advantages that:
(1) present invention prepares foam concrete block based on ardealite hydraulicity composite gel material, is ensureing product quality On the premise of, improve industrial solid castoff ardealite with dosage (ardealite consumption is more than 50%), be conducive to solid waste The comprehensive utilization in goods and materials source, environmental protection, while being conducive to saving cement and other Binder Materials, reduce production cost.
(2) present invention is foamed to concrete using compound foaming agent, by component, foam stabilizing composition and the thickening of bubbling The comprehensive function of component, foaming effect is good and foam is more stable, make foam concrete block make and maintenance processes in easily not Produce and shrink, cave in, deform, while air entrapment is uniform and relatively independent greatly, foamed concrete is being done on an equal basis There is under unit weight higher intensity and more preferable heat insulating effect.
(3) present invention adopts coagulant, accelerates foamed concrete condensation setting rate, improves foamed concrete early stage strong Degree, foam concrete block can realize the demoulding in (12-24) h without the need for steam-cured, and production technology is simpler, also more energy-conservation.
Specific embodiment
The present invention is further illustrated below by embodiment.
A kind of embodiment 1, foam concrete block based on ardealite hydraulicity composite gel material, weighs water respectively 20 weight portion of mud, 50 weight portion of ardealite, 15 weight portion of flyash, 15 weight portion of S105 slag powders, 10 weight portion of stone flour and poly- 0.2 weight portion of tacryl, adds low rate mixing (2-3) minute in mixer, is well mixed powder and fiber;Water is weighed again 40 weight portions, 1 weight portion of 0.2 weight portion of water reducer and coagulant, quickly stir (1-2) minute in adding mixer, make Homogenate material;Add rapidly 2 weight portion compound foaming agents, then quickly stir about 1 minute afterwards toward slurry, it is then rapid to discharge Enter mold forming, after material foams (1-2) hour in a mold, take off after (12-24) h Mould, continues maintenance to 7d and 28d, takes out test specimen, its dry density, thermal conductivity factor and intensity are surveyed after drying.Test result is shown in Table 1.
A kind of embodiment 2, foam concrete block based on ardealite hydraulicity composite gel material, weighs water respectively 30 weight portion of mud, 100 weight portion of ardealite, 20 weight portion of flyash, 20 weight portion of S95 slag powders, 12 weight portion of stone flour and poly- 0.3 weight portion of tacryl, adds low rate mixing (2-3) minute in mixer, is well mixed powder and fiber;Water is weighed again 60 weight portions, 2 weight portion of 0.4 weight portion of water reducer and coagulant, quickly stir (1-2) minute in adding mixer, make Homogenate material;Add rapidly 4 weight portion compound foaming agents, then quickly stir about 1 minute afterwards toward slurry, it is then rapid to discharge Enter mold forming, after material foams (1-2) hour in a mold, take off after (12-24) h Mould, continues maintenance to 7d and 28d, takes out test specimen, its dry density, thermal conductivity factor and intensity are surveyed after drying.Test result is shown in Table 1.
A kind of embodiment 3, foam concrete block based on ardealite hydraulicity composite gel material, weighs water respectively 40 weight portion of mud, 150 weight portion of ardealite, 25 weight portion of flyash, 35 weight portion of S95 slag powders, 15 weight portion of stone flour and wood 0.6 weight portion of matter fiber, adds low rate mixing (2-3) minute in mixer, is well mixed powder and fiber;Water 80 is weighed again Weight portion, 3 weight portion of 0.6 weight portion of water reducer and coagulant, quickly stir (1-2) minute in adding mixer, make uniform Slurry;Add rapidly 8 weight portion compound foaming agents, then quickly stir about 1 minute afterwards toward slurry, then discharge rapidly into Mold forming, after material foams (1-2) hour in a mold, take off after (12-24) h Mould, continues maintenance to 7d and 28d, takes out test specimen, its dry density, thermal conductivity factor and intensity are surveyed after drying.Test result is shown in Table 1.
1 embodiment the performance test results of table

Claims (10)

1. a kind of foam concrete block based on ardealite hydraulicity composite gel material, it is characterised in that by cement, phosphorus Gypsum, flyash, slag powders, stone flour, fiber, water, compound foaming agent, water reducer and coagulant composition, the weight of each component Than for:
Cement 20-40
Ardealite 50-150
Flyash 15-25
Slag powders 15-35
Stone flour 10-15
Fiber 0.2-0.6
Water 40-80
Compound foaming agent 2-8
Water reducer 0.2-0.6
Coagulant 1-3
Wherein:The ardealite is high concentration phosphate fertilizer enterprise using the solid waste during Wet-process phosphoric acid (WPPA), drying Cross 200 mesh sieves to use after broken.
2. a kind of foam concrete block based on ardealite hydraulicity composite gel material according to claim 1, It is characterized in that the cement is P O42.5 level Portland cements.
3. a kind of foam concrete block based on ardealite hydraulicity composite gel material according to claim 1, It is characterized in that the flyash is I level high-calcium fly asses, and its free calcium oxide content≤3.0%, loss on ignition≤5.0%.
4. a kind of foam concrete block based on ardealite hydraulicity composite gel material according to claim 1, It is characterized in that the slag powders are S95 slag powders or the one kind in S105 slag powders.
5. a kind of foam concrete block based on ardealite hydraulicity composite gel material according to claim 1, It is characterized in that the stone flour is the powder produced in stone machining processing, make by crossing 200 mesh sieves after drying, grinding With.
6. a kind of foam concrete block based on ardealite hydraulicity composite gel material according to claim 1, It is characterized in that the fiber is the one kind in polypropylene fibre and string.
7. a kind of foam concrete block based on ardealite hydraulicity composite gel material according to claim 1, It is characterized in that the water be running water, reclaim in water, containing the one kind in alkali waste water, river.
8. a kind of foam concrete block based on ardealite hydraulicity composite gel material according to claim 1, It is characterized in that the compound foaming agent is by 50 weight portion of Tea Saponin, 20 weight portion of lauryl sodium sulfate, polyethylene glycol 10 weight portions, 10 weight portion of gelatin and 10 weight portion of carboxymethylcellulose calcium are uniformly mixed at normal temperatures and form.
9. a kind of foam concrete block based on ardealite hydraulicity composite gel material according to claim 1, It is characterized in that the coagulant is formed than compounding according to 5: 3: 2 weight by sodium sulphate, calcium chloride and triethanolamine.
10. a kind of a kind of foamed concrete based on ardealite hydraulicity composite gel material as claimed in claim 1 is built The preparation method of block, it is characterised in that comprise the following steps that:
(1) by cement, ardealite, flyash, slag powders, stone flour and fiber according to corresponding part by weight weighing, then will be solid Body powder and fiber carry out one-level stirring in adding mixer, low rate mixing (2-3) minute, make solid powder and fiber mixing equal It is even;
(2) water, water reducer and the coagulant of corresponding part by weight are added in the powder after above-mentioned being well mixed, is then entered rapidly Two grades of stirrings of row, quick stirring (1-2) minute, are obtained the uniform sizing material before foaming;
(3) compound foaming agent of corresponding part by weight is added in the slurry Jing after two grades of stirrings, three-level is then carried out rapidly Then foam slurry is poured into in-mold molding rapidly by stirring, quick stir about 1 minute, stands (1-2) hour;
(4) by step(3)Foamed concrete after middle standing (1-2) hour conserves (12-24) hour in moving to normal temperature curing box The demoulding afterwards, the building block after the demoulding continue maintenance to 7d and 28d.
CN201610925899.7A 2016-10-31 2016-10-31 Foamed concrete building block mainly prepared from phosphogypsum hydraulic composite binding material and preparation method thereof CN106518153A (en)

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Cited By (8)

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CN107032820A (en) * 2017-05-02 2017-08-11 福建聚合隆复合材料有限公司 A kind of processing method of stone material waste residue foamed board and stone material waste residue
CN107935627A (en) * 2017-11-27 2018-04-20 固岩科技发展有限公司 A kind of construction method based on the cementitious material of slag in highway high roadbed
CN108033748A (en) * 2017-11-27 2018-05-15 固岩科技发展有限公司 A kind of building block based on boron gypsum and preparation method thereof
CN108358578A (en) * 2018-03-01 2018-08-03 西南科技大学 A kind of titanium extraction tailings-titanium gypsum base foam concrete and preparation method thereof
CN108409248A (en) * 2018-04-18 2018-08-17 王汉桥 A kind of Industrial Solid Waste original state Ardealite block and preparation method thereof
CN108975840A (en) * 2017-05-31 2018-12-11 山东红日化工股份有限公司 A kind of technique of ardealite aerated-block
CN109574614A (en) * 2018-11-14 2019-04-05 湖北冶金地质研究所(中南冶金地质研究所) A kind of method that quartz mud modified ardealite based cementitious material prepares concrete
CN110029661A (en) * 2019-04-26 2019-07-19 上海宝田新型建材有限公司 Method for disposing the combination tubular pole of solid waste material and its disposing solid waste material

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107032820A (en) * 2017-05-02 2017-08-11 福建聚合隆复合材料有限公司 A kind of processing method of stone material waste residue foamed board and stone material waste residue
CN108975840A (en) * 2017-05-31 2018-12-11 山东红日化工股份有限公司 A kind of technique of ardealite aerated-block
CN107935627A (en) * 2017-11-27 2018-04-20 固岩科技发展有限公司 A kind of construction method based on the cementitious material of slag in highway high roadbed
CN108033748A (en) * 2017-11-27 2018-05-15 固岩科技发展有限公司 A kind of building block based on boron gypsum and preparation method thereof
CN107935627B (en) * 2017-11-27 2020-12-29 固岩科技发展有限公司 Construction method of slag-based cementing material in highway high fill
CN108358578A (en) * 2018-03-01 2018-08-03 西南科技大学 A kind of titanium extraction tailings-titanium gypsum base foam concrete and preparation method thereof
CN108409248A (en) * 2018-04-18 2018-08-17 王汉桥 A kind of Industrial Solid Waste original state Ardealite block and preparation method thereof
CN109574614A (en) * 2018-11-14 2019-04-05 湖北冶金地质研究所(中南冶金地质研究所) A kind of method that quartz mud modified ardealite based cementitious material prepares concrete
CN109574614B (en) * 2018-11-14 2019-08-09 湖北冶金地质研究所(中南冶金地质研究所) A kind of method that quartz mud modified ardealite based cementitious material prepares concrete
CN110029661A (en) * 2019-04-26 2019-07-19 上海宝田新型建材有限公司 Method for disposing the combination tubular pole of solid waste material and its disposing solid waste material

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