CN110117176A - A kind of carrying thermal-insulating type foamed concrete material and preparation method thereof using drift-sand - Google Patents
A kind of carrying thermal-insulating type foamed concrete material and preparation method thereof using drift-sand Download PDFInfo
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- CN110117176A CN110117176A CN201910411213.6A CN201910411213A CN110117176A CN 110117176 A CN110117176 A CN 110117176A CN 201910411213 A CN201910411213 A CN 201910411213A CN 110117176 A CN110117176 A CN 110117176A
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/068—Specific natural sands, e.g. sea -, beach -, dune - or desert sand
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, 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
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of carrying thermal-insulating type foamed concrete materials and preparation method thereof using drift-sand, in terms of mass fraction, carrying thermal-insulating type foamed concrete material composition includes: 200-450 parts of ordinary portland cement, 50-160 parts of silicon ash, 450-730 parts of drift-sand, 1-3 parts of foam stabilizer, 1-5 parts of polypropylene fibre, 4-7 parts of water-reducing agent, 1-2 parts of foaming agent, 105-240 parts of water.Drift-sand is resourceful, and circularity is high, can replace natural aggregate preparation carrying thermal-insulating type foam concrete.Incorporation polypropylene fibre, silicon ash are used to improve the cohesive force and pore structure of matrix.Prepared carrying thermal-insulating type foam concrete has the characteristics that compression strength is high, thermal coefficient is small, environmentally friendly low-carbon.It can be applied to the foundation engineering under load bearing heat preserving integrated wall system and particular surroundings.
Description
Technical field
The invention belongs to novel green the field of building materials, and in particular to a kind of carrying thermal-insulating type foam using drift-sand
Concrete material and preparation method thereof.
Background technique
Northwest China's construction condition complexity and bad environments, it is widely distributed to have soft soil foundation and desert region, no
Conducive to infrastructure and economic development.Currently, mainly using preloading for soft soil foundation, changing the tradition sides such as earth fill
Method carrys out solid base engineering to tamp rock stratum, however these methods are low in the presence of compacting intensity, consolidation cycle is long and roadbed is uneven
The engineering problems such as sedimentation.Bearing type foam concrete greatly improves construction with its low cost, Gao Biqiang, fast the features such as consolidating
Efficiency and windblown sand movement are horizontal, but its intensity is not able to satisfy structural requirement still.In addition, the Northwest's morning and evening temperature difference is big, and build
Heat insulating ability is generally poor to lead to significantly increasing for building energy consumption, realizes that building heat preservation is to alleviate effectively arranging for environmental resource pressure
It applies.Thermal-insulating type foam concrete is wall heat insulation material common in building, and complex heat-preservation usually is made with other structural materials
Wallboard is used for building heat preservation, but engineer application process is cumbersome.And the thermal insulation property of bearing type foam concrete is poor.Therefore in order to
Expand foam concrete in the application range of building structure, improves its carrying and thermal insulation property is of great significance.
The preparation of usual bearing type foam concrete can mix fine sand for the use and control contraction that reduce cementitious material.
Screening or quartz sand, the two of the fine sand from natural river sand exert heavy pressures on to environment.And the Northwest is widely distributed
Drift-sand belong to ultra fine sand, and purity is high, surface are round and smooth.It is not only small on foam system influence, and gathering materials on the spot can be substantially
The production cost of foam concrete is reduced, is realized from controlling transformation of the sand to the improvement idea with sand.But due to the cohesion of drift-sand
Power is low, makes the easy laminated segregation of prepared slurry, can have an adverse effect to the performance of foam concrete.Improve drift-sand slurry
Workability be efficiently utilize drift-sand resource technical foundation.
Summary of the invention
Goal of the invention: in order to solve the above technical problem, the present invention provides a kind of carrying thermal-insulating type bubbles using drift-sand
Foam concrete material and preparation method thereof.
Technical solution: to achieve the goals above, the invention discloses a kind of carrying thermal-insulating type foams using drift-sand
Concrete material is mainly made of the raw material of following weight ratio:
200-450 parts of ordinary portland cement
50-160 parts of silicon ash
450-730 parts of drift-sand
1-3 parts of foam stabilizer
1-5 parts of polypropylene fibre
4-7 parts of water-reducing agent
1-2 parts of foaming agent
105-240 parts of water
The ordinary portland cement is PII52.5 grades of ordinary portland cements；
The silicon ash its Average Particle Diameters D50 is 0.18 μm, and specific surface area is not less than 15000m2/kg；
The fineness modulus of the drift-sand is 1.2-1.4, partial size 0.08-0.63mm, density 2.55-2.70g/
cm3, water absorption rate 0.6-0.8%；
The foam stabilizer is hydroxypropyl methyl cellulose, white powder, viscosity 20000mPas；
The length of the polypropylene fibre is 9~12mm, and tensile strength is equal to greatly 400MPa, density 0.91g/cm3；
The water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid, and solid content is more than or equal to 40% (mass content), and water-reducing rate is big
In equal to 30%.
The foaming agent is commercially available compound foaming agent.
The water is tap water or drinking water, meets the requirement of " concrete water standard " (JGJ63-2006).
The carrying thermal-insulating type foamed concrete material using drift-sand, prepares according to the following steps according to the ratio:
(1) foaming agent, foam stabilizer are uniformly mixed, and are diluted with water, then previously prepared foam is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is taken to stir to obtain mixed dry material；
(3) water-reducing agent is added into mixed dry material and water is uniformly mixing to obtain mixture slurry；
(4) preformed foam and die-filling after mixing evenly obtained by step (1) is added into mixture slurry, is demoulded after certain age
And standard curing.
Carrying thermal-insulating type foam concrete prepared by the present invention can improve isolation of the drift-sand in foam concrete and ask
Topic, while guaranteeing the characteristics of prepared foam concrete has both low thermal conductivity and high compressive strength.Drift-sand is resourceful,
And circularity is high, can replace natural aggregate preparation carrying thermal-insulating type foam concrete.Incorporation polypropylene fibre, silicon ash are for improving
The cohesive force and pore structure of matrix.Prepared carrying thermal-insulating type foam concrete, have compression strength is high, thermal coefficient is small,
The characteristics of environmentally friendly low-carbon.It can be applied to the foundation engineering under load bearing heat preserving integrated wall system and particular surroundings.
Technical effect: comparing existing bearing type foam concrete, and the present invention uses drift-sand to reduce pair as raw material
The dependence of natural aggregate not only realizes effective sand control but also reduces environmental pressure and production cost.Improve wind by incorporation silicon ash
The workability of sand slurry and its pore structure of hardened paste improve the compression strength and its heat preservation of bearing type foam concrete
Performance.
Specific embodiment
Below with reference to specific example, the present invention is furture elucidated.
Raw material used in following embodiment selects as follows:
Ordinary portland cement is PII52.5 grades of ordinary portland cements；
Silicon ash its Average Particle Diameters D50 is 0.18 μm, and specific surface area is not less than 15000m2/kg；
The fineness modulus of drift-sand is 1.2-1.4, partial size 0.08-0.63mm, density 2.55-2.70g/cm3, water suction
Rate is 0.6-0.8%.；
Foam stabilizer is hydroxypropyl methyl cellulose, white powder, viscosity 20000mPas；
The length of polypropylene fibre is 9~12mm, and tensile strength is equal to greatly 400MPa, density 0.91g/cm3
Water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid, and solid content is more than or equal to 40% (mass content), and water-reducing rate is more than or equal to
30%；
Foaming agent is commercially available compound foaming agent；
Water is tap water or drinking water, meets the requirement of " concrete water standard " (JGJ63-2006).
Embodiment 1
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
350.0 parts of ordinary portland cement, 150.0 parts of silicon ash, 500.0 parts of drift-sand, 2.5 parts of foam stabilizer, polypropylene is fine
2.6 parts, 6.3 parts of water-reducing agent, 1.1 parts of foaming agent, 200.0 parts of water of dimension.
Preparation method:
(1) foaming agent, foam stabilizer are weighed by weight and is uniformly mixed, and be diluted with water by the mass ratio of 1:50, then
Using the previously prepared foam of foaming machine, preformed foam is obtained, it is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is weighed by weight to stir to obtain
Mixed dry material；
(3) water-reducing agent and water are added into gained mixed dry material and is uniformly mixing to obtain mixture slurry；
(4) preformed foam obtained by being added into mixture slurry in step (1) is simultaneously die-filling after mixing evenly, demoulds afterwards for 24 hours, and
It is placed in standard curing room and conserves 28d.
Embodiment 2
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
336.0 parts of ordinary portland cement, 144.0 parts of silicon ash, 480.0 parts of drift-sand, 2.4 parts of foam stabilizer, polypropylene is fine
2.7 parts, 6.0 parts of water-reducing agent, 1.0 parts of foaming agent, 240.0 parts of water of dimension.
Preparation method:
(1) foaming agent, foam stabilizer are weighed by weight and is uniformly mixed, and be diluted with water by the mass ratio of 1:50, then
Using the previously prepared foam of foaming machine, preformed foam is obtained, it is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is weighed by weight to stir to obtain
Mixed dry material；
(3) water-reducing agent and water are added into gained mixed dry material and is uniformly mixing to obtain mixture slurry；
(4) preformed foam obtained by being added into mixture slurry in step (1) is simultaneously die-filling after mixing evenly, demoulds afterwards for 24 hours, and
It is placed in standard curing room and conserves 28d.
Embodiment 3
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
289.7 parts of ordinary portland cement, 124.1 parts of silicon ash, 620.7 parts of drift-sand, 2.1 parts of foam stabilizer, polypropylene is fine
2.5 parts, 5.2 parts of water-reducing agent, 1.3 parts of foaming agent, 165.5 parts of water of dimension.
Preparation method:
(1) foaming agent, foam stabilizer are weighed by weight and is uniformly mixed, and be diluted with water by the mass ratio of 1:50, then
Using the previously prepared foam of foaming machine, preformed foam is obtained, it is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is weighed by weight to stir to obtain
Mixed dry material；
(3) water-reducing agent and water are added into gained mixed dry material and is uniformly mixing to obtain mixture slurry；
(4) preformed foam obtained by being added into mixture slurry in step (1) is simultaneously die-filling after mixing evenly, demoulds afterwards for 24 hours, and
It is placed in standard curing room and conserves 28d.
Embodiment 4
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
425.0 parts of ordinary portland cement, 75.0 parts of silicon ash, 500.0 parts of drift-sand, 2.5 parts of foam stabilizer, polypropylene fibre
2.6 parts, 6.3 parts of water-reducing agent, 1.1 parts of foaming agent, 200.0 parts of water.
Preparation method:
(1) foaming agent, foam stabilizer are weighed by weight and is uniformly mixed, and be diluted with water by the mass ratio of 1:50, then
Using the previously prepared foam of foaming machine, preformed foam is obtained, it is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is weighed by weight to stir to obtain
Mixed dry material；
(3) water-reducing agent and water are added into gained mixed dry material and is uniformly mixing to obtain mixture slurry；
(4) preformed foam obtained by being added into mixture slurry in step (1) is simultaneously die-filling after mixing evenly, demoulds afterwards for 24 hours, and
It is placed in standard curing room and conserves 28d.
Embodiment 5
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
350.0 parts of ordinary portland cement, 150.0 parts of silicon ash, 500.0 parts of drift-sand, 2.5 parts of foam stabilizer, polypropylene is fine
1.6 parts, 6.3 parts of water-reducing agent, 1.1 parts of foaming agent, 200.0 parts of water of dimension.
Preparation method:
(1) foaming agent, foam stabilizer are weighed by weight and is uniformly mixed, and be diluted with water by the mass ratio of 1:50, then
Using the previously prepared foam of foaming machine, preformed foam is obtained, it is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is weighed by weight to stir to obtain
Mixed dry material；
(3) water-reducing agent and water are added into gained mixed dry material and is uniformly mixing to obtain mixture slurry；
(4) preformed foam obtained by being added into mixture slurry in step (1) is simultaneously die-filling after mixing evenly, demoulds afterwards for 24 hours, and
It is placed in standard curing room and conserves 28d.
Embodiment 6
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
350.0 parts of ordinary portland cement, 150.0 parts of silicon ash, 500.0 parts of drift-sand, 2.5 parts of foam stabilizer, polypropylene is fine
2.6 parts, 6.3 parts of water-reducing agent, 1.1 parts of foaming agent, 200.0 parts of water of dimension.
Preparation method:
(1) foaming agent, foam stabilizer are weighed by weight and is uniformly mixed, and be diluted with water by the mass ratio of 1:50, then
Using the previously prepared foam of foaming machine, preformed foam is obtained, it is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is weighed by weight to stir to obtain
Mixed dry material；
(3) water-reducing agent and water are added into gained mixed dry material and is uniformly mixing to obtain mixture slurry；
(4) preformed foam obtained by being added into mixture slurry in step (1) is simultaneously die-filling after mixing evenly, demoulds afterwards for 24 hours, and
It is placed in standard curing room and conserves 28d.
Embodiment 7
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
200 parts of ordinary portland cement, 50 parts of silicon ash, 450 parts of drift-sand, 1 part of foam stabilizer, 1 part of polypropylene fibre, diminishing
4 parts of agent, 1 part of foaming agent, 105 parts of water.
Preparation method:
(1) foaming agent, foam stabilizer are weighed by weight and is uniformly mixed, and be diluted with water by the mass ratio of 1:50, then
Using the previously prepared foam of foaming machine, preformed foam is obtained, it is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is weighed by weight to stir to obtain
Mixed dry material；
(3) water-reducing agent and water are added into gained mixed dry material and is uniformly mixing to obtain mixture slurry；
(4) preformed foam obtained by being added into mixture slurry in step (1) is simultaneously die-filling after mixing evenly, demoulds afterwards for 24 hours, and
It is placed in standard curing room and conserves 28d.
Embodiment 8
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
450 parts of ordinary portland cement, 160 parts of silicon ash, 730 parts of drift-sand, 3 parts of foam stabilizer, 5 parts of polypropylene fibre, subtract
7 parts of aqua, 2 parts of foaming agent, 240 parts of water.
Preparation method:
(1) foaming agent, foam stabilizer are weighed by weight and is uniformly mixed, and be diluted with water by the mass ratio of 1:50, then
Using the previously prepared foam of foaming machine, preformed foam is obtained, it is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is weighed by weight to stir to obtain
Mixed dry material；
(3) water-reducing agent and water are added into gained mixed dry material and is uniformly mixing to obtain mixture slurry；
(4) preformed foam obtained by being added into mixture slurry in step (1) is simultaneously die-filling after mixing evenly, demoulds afterwards for 24 hours, and
It is placed in standard curing room and conserves 28d.
Comparative example 1
A kind of carrying thermal-insulating type foamed concrete material using drift-sand, according to parts by weight, including following components:
450 parts of ordinary portland cement, 450 parts of drift-sand, 2.5 parts of foam stabilizer, 6.3 parts of water-reducing agent, 1.1 parts of foaming agent,
180 parts of water.
Preparation method is same as above.
Performance detection:
To the foam concrete test performance of Examples 1 to 6 and comparative example 1, as a result such as table 1.
1 the performance test results of table
Compared with comparative example 1, the suitable polypropylene fibre and drift-sand aggregate mixed in Examples 1 to 6 plays association
Same effect is substantially reduced the dry of product and shrinks and improve reliability of material and compression strength；In addition the incorporation of silicon ash both increased
Add the cohesive force of drift-sand slurry, so that drift-sand slurry isolation problem is effectively controlled, also improves the envelope of pore structure
Closing property improves the thermal insulation property and waterproof performance of product.
Claims (9)
1. a kind of carrying thermal-insulating type foamed concrete material using drift-sand, which is characterized in that it is mainly by following parts by weight
The raw material of ratio is made:
200-450 parts of ordinary portland cement
50-160 parts of silicon ash
450-730 parts of drift-sand
1-3 parts of foam stabilizer
1-5 parts of polypropylene fibre
4-7 parts of water-reducing agent
1-2 parts of foaming agent
105-240 parts of water.
2. carrying thermal-insulating type foamed concrete material according to claim 1, which is characterized in that the normal silicate
Cement is PII52.5 grades of ordinary portland cements.
3. carrying thermal-insulating type foamed concrete material according to claim 1, which is characterized in that it is average for the silicon ash
Particle size D50It is 0.18 μm, specific surface area is not less than 15000m2/kg。
4. carrying thermal-insulating type foamed concrete material according to claim 1, which is characterized in that the drift-sand it is thin
Degree modulus is 1.2-1.4, partial size 0.08-0.63mm, density 2.55-2.70g/cm3, water absorption rate 0.6-0.8%.
5. carrying thermal-insulating type foamed concrete material according to claim 1, which is characterized in that the foam stabilizer is hydroxyl
Propyl methocel, white powder, viscosity 20000mPas.
6. carrying thermal-insulating type foamed concrete material according to claim 1, which is characterized in that the polypropylene fibre
Length be 9~12mm, tensile strength is equal to greatly 400MPa, density 0.91g/cm3。
7. carrying thermal-insulating type foamed concrete material according to claim 1, which is characterized in that the water-reducing agent is poly-
Carboxylic acid high efficiency water reducing agent, solid content are more than or equal to 40% (mass content), and water-reducing rate is more than or equal to 30%.
8. carrying thermal-insulating type foamed concrete material according to claim 1, which is characterized in that the foaming agent is multiple
Mould assembly foaming agent.
9. the described in any item carrying thermal-insulating type foamed concrete material preparation methods using drift-sand of claim 1-8,
It is characterized in that, comprising the following steps:
(1) foaming agent, foam stabilizer are uniformly mixed, and are diluted with water, then previously prepared foam is spare；
(2) ordinary portland cement, silicon ash, polypropylene fibre and drift-sand is taken to stir to obtain mixed dry material；
(3) water-reducing agent is added into mixed dry material and water is uniformly mixing to obtain mixture slurry；
(4) preformed foam and die-filling after mixing evenly obtained by step (1) is added into mixture slurry, demoulds and marks after certain age
Quasi- maintenance.
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Cited By (1)
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| CN114907068A (en) * | 2022-05-07 | 2022-08-16 | 四川省绵竹澳东水泥有限责任公司 | High-strength high-adsorbability foam concrete and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114907068A (en) * | 2022-05-07 | 2022-08-16 | 四川省绵竹澳东水泥有限责任公司 | High-strength high-adsorbability foam concrete and preparation method and application thereof |
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