CN110606708A - High-performance foam concrete and preparation method thereof - Google Patents
High-performance foam concrete and preparation method thereof Download PDFInfo
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- CN110606708A CN110606708A CN201810618200.1A CN201810618200A CN110606708A CN 110606708 A CN110606708 A CN 110606708A CN 201810618200 A CN201810618200 A CN 201810618200A CN 110606708 A CN110606708 A CN 110606708A
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- foam concrete
- reducing agent
- water reducing
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- 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
-
- 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
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses high-performance foam concrete and a preparation method thereof. The preparation method comprises the steps of mixing and grinding the fly ash and the exciting agent, adding the grinding material, common portland cement, the coagulant, the water reducing agent, polyacrylamide, cellulose ether, polyvinyl alcohol and fiber into water, stirring to prepare mortar, finally adding the foaming agent, and uniformly stirring to prepare the high-performance foam concrete. The invention adds coagulant into common Portland cement, and uses the fly ash compounded by the excitant to replace cement, and the prepared foam concrete has light weight, high strength, low heat conductivity coefficient and excellent volume stability.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to high-performance foam concrete and a preparation method thereof.
Background
The foam concrete is also called as foaming cement, lightweight concrete and the like, and is a novel building energy-saving material which is waste-utilizing, environment-friendly, energy-saving, low in cost and non-combustible. The foam concrete is a concrete product which is formed by introducing air or gases such as nitrogen, carbon dioxide, oxygen and the like into concrete slurry according to application requirements in a chemical or physical mode and reasonably curing and forming, contains a large number of fine closed air holes and has considerable strength. The production of foamed concrete is usually carried out by mechanically preparing an aqueous solution of a foaming agent into a foam.
As a novel energy-saving environment-friendly building material, the foam concrete has the following outstanding advantages: it can be naturally cured and hardened, its production process is simple, investment scale is small, not only can be used for producing various prefabricated products, but also can be cast in situ. With the reform of wall materials and the promotion of energy-saving construction policies, the development and application of energy-saving building materials are widely regarded, and the rapid development of novel building materials with energy conservation, waste utilization, heat preservation and light weight becomes a mainstream trend, wherein the foam concrete block plays an important role in non-bearing wall materials.
Disclosure of Invention
The invention aims to provide high-performance foam concrete and a preparation method thereof, and the prepared foam concrete has the advantages of light weight, high strength, low heat conductivity coefficient and excellent volume stability.
A high-performance foam concrete comprises the following raw materials in parts by weight: 20-30 parts of ordinary portland cement, 2-3 parts of a coagulant, 10-20 parts of fly ash, 3-7 parts of an excitant, 2-3 parts of a water reducing agent, 3-5 parts of polyacrylamide, 2-3 parts of cellulose ether, 0.5-1 part of polyvinyl alcohol, 0.5-1 part of fiber, 9-12 parts of a foaming agent and 20-30 parts of water;
the coagulant is a mixture of sodium aluminate and sodium silicate;
the fibers are a mixture of polypropylene fibers, polyester fibers and glass fibers;
the foaming agent is sodium dodecyl benzene sulfonate and sodium bentonite;
the excitant is quicklime.
Preferably, the weight ratio of the sodium aluminate to the sodium silicate is 1: 1-2.
Preferably, the weight ratio of the sodium dodecyl benzene sulfonate to the sodium bentonite is 2: 1-2.
Preferably, the water reducing agent is a polycarboxylate water reducing agent or a naphthalenesulfonate water reducing agent.
Preferably, the polyacrylamide has a weight average molecular weight of 600 ten thousand.
The preparation method of the high-performance foam concrete comprises the following steps:
step 1, mixing and grinding fly ash and an exciting agent to obtain a grinding material;
step 2, adding ordinary portland cement, a coagulant, a grinding material, a water reducing agent, polyacrylamide, cellulose ether, polyvinyl alcohol and fibers into water, and stirring to obtain mortar;
and 3, adding a foaming agent into the mortar obtained in the step 2, and uniformly stirring to obtain the high-performance foam concrete.
The invention adds coagulant into common Portland cement, and uses the fly ash compounded by the excitant to replace cement, and the prepared foam concrete has light weight, high strength, low heat conductivity coefficient and excellent volume stability.
Detailed Description
Example 1
A high-performance foam concrete comprises the following raw materials in parts by weight: 20 parts of ordinary portland cement, 2 parts of a coagulant, 10 parts of fly ash, 3 parts of an excitant, 2 parts of a water reducing agent, 3 parts of polyacrylamide, 2 parts of cellulose ether, 0.5 part of polyvinyl alcohol, 0.5 part of fiber, 9 parts of a foaming agent and 20 parts of water;
the coagulant is a mixture of sodium aluminate and sodium silicate, and the weight ratio of the sodium aluminate to the sodium silicate is 1: 1;
the fiber is a mixture of polypropylene fiber, polyester fiber and glass fiber, and the weight ratio of the polypropylene fiber to the polyester fiber to the glass fiber is 1: 1: 1;
the foaming agent is sodium dodecyl benzene sulfonate and sodium bentonite, and the weight ratio of the sodium dodecyl benzene sulfonate to the sodium bentonite is 2: 1;
the excitant is quicklime.
Wherein the water reducing agent is a polycarboxylate water reducing agent; the weight average molecular weight of the polyacrylamide is 600 ten thousand.
The preparation method of the high-performance foam concrete comprises the following steps:
step 1, mixing and grinding fly ash and an exciting agent to obtain a grinding material;
step 2, adding ordinary portland cement, a coagulant, a grinding material, a water reducing agent, polyacrylamide, cellulose ether, polyvinyl alcohol and fibers into water, and stirring to obtain mortar;
and 3, adding a foaming agent into the mortar obtained in the step 2, uniformly stirring, and curing at room temperature to obtain the high-performance foam concrete.
The prepared foam concreteThe main performance indexes are as follows: dry density 768kg/m3The cube compressive strength is 12.35MPa, the heat conductivity coefficient is 0.142W/m.K, and the drying shrinkage value is 0.28 mm/m.
Example 2
A high-performance foam concrete comprises the following raw materials in parts by weight: 23 parts of ordinary portland cement, 2 parts of a coagulant, 14 parts of fly ash, 4 parts of an excitant, 2 parts of a water reducing agent, 3 parts of polyacrylamide, 2 parts of cellulose ether, 0.7 part of polyvinyl alcohol, 0.8 part of fiber, 10 parts of a foaming agent and 24 parts of water;
the coagulant is a mixture of sodium aluminate and sodium silicate, and the weight ratio of the sodium aluminate to the sodium silicate is 1: 2;
the fiber is a mixture of polypropylene fiber, polyester fiber and glass fiber, and the weight ratio of the polypropylene fiber to the polyester fiber to the glass fiber is 1: 2: 1;
the foaming agent is sodium dodecyl benzene sulfonate and sodium bentonite, and the weight ratio of the sodium dodecyl benzene sulfonate to the sodium bentonite is 1: 1;
the excitant is quicklime.
Wherein the water reducing agent is a polycarboxylate water reducing agent; the weight average molecular weight of the polyacrylamide is 600 ten thousand.
The preparation method of the high-performance foam concrete comprises the following steps:
step 1, mixing and grinding fly ash and an exciting agent to obtain a grinding material;
step 2, adding ordinary portland cement, a coagulant, a grinding material, a water reducing agent, polyacrylamide, cellulose ether, polyvinyl alcohol and fibers into water, and stirring to obtain mortar;
and 3, adding a foaming agent into the mortar obtained in the step 2, uniformly stirring, and curing at room temperature to obtain the high-performance foam concrete.
The main performance indexes of the prepared foam concrete are as follows: dry density 789kg/m3The cube compressive strength is 11.96MPa, the heat conductivity coefficient is 0.125W/m.K, and the drying shrinkage value is 0.31 mm/m.
Example 3
A high-performance foam concrete comprises the following raw materials in parts by weight: 27 parts of ordinary portland cement, 3 parts of a coagulant, 18 parts of fly ash, 5 parts of an excitant, 3 parts of a water reducing agent, 4 parts of polyacrylamide, 3 parts of cellulose ether, 0.8 part of polyvinyl alcohol, 0.7 part of fiber, 11 parts of a foaming agent and 27 parts of water;
the coagulant is a mixture of sodium aluminate and sodium silicate, and the weight ratio of the sodium aluminate to the sodium silicate is 1: 1;
the fiber is a mixture of polypropylene fiber, polyester fiber and glass fiber, and the weight ratio of the polypropylene fiber to the polyester fiber to the glass fiber is 1: 1: 1;
the foaming agent is sodium dodecyl benzene sulfonate and sodium bentonite, and the weight ratio of the sodium dodecyl benzene sulfonate to the sodium bentonite is 2: 1;
the excitant is quicklime.
Wherein the water reducing agent is a polycarboxylate water reducing agent; the weight average molecular weight of the polyacrylamide is 600 ten thousand.
The preparation method of the high-performance foam concrete comprises the following steps:
step 1, mixing and grinding fly ash and an exciting agent to obtain a grinding material;
step 2, adding ordinary portland cement, a coagulant, a grinding material, a water reducing agent, polyacrylamide, cellulose ether, polyvinyl alcohol and fibers into water, and stirring to obtain mortar;
and 3, adding a foaming agent into the mortar obtained in the step 2, uniformly stirring, and curing at room temperature to obtain the high-performance foam concrete.
The main performance indexes of the prepared foam concrete are as follows: dry density 675kg/m3The cube compressive strength is 10.85MPa, the heat conductivity coefficient is 0.123W/m.K, and the drying shrinkage value is 0.25 mm/m.
Example 4
A high-performance foam concrete comprises the following raw materials in parts by weight: 30 parts of ordinary portland cement, 3 parts of a coagulant, 20 parts of fly ash, 7 parts of an excitant, 3 parts of a water reducing agent, 5 parts of polyacrylamide, 3 parts of cellulose ether, 1 part of polyvinyl alcohol, 1 part of fiber, 12 parts of a foaming agent and 30 parts of water;
the coagulant is a mixture of sodium aluminate and sodium silicate, and the weight ratio of the sodium aluminate to the sodium silicate is 1: 1;
the fiber is a mixture of polypropylene fiber, polyester fiber and glass fiber, and the weight ratio of the polypropylene fiber to the polyester fiber to the glass fiber is 1: 1: 1;
the foaming agent is sodium dodecyl benzene sulfonate and sodium bentonite, and the weight ratio of the sodium dodecyl benzene sulfonate to the sodium bentonite is 2: 1;
the excitant is quicklime.
Wherein the water reducing agent is a polycarboxylate water reducing agent; the weight average molecular weight of the polyacrylamide is 600 ten thousand.
The preparation method of the high-performance foam concrete comprises the following steps:
step 1, mixing and grinding fly ash and an exciting agent to obtain a grinding material;
step 2, adding ordinary portland cement, a coagulant, a grinding material, a water reducing agent, polyacrylamide, cellulose ether, polyvinyl alcohol and fibers into water, and stirring to obtain mortar;
and 3, adding a foaming agent into the mortar obtained in the step 2, uniformly stirring, and curing at room temperature to obtain the high-performance foam concrete.
The main performance indexes of the prepared foam concrete are as follows: dry density 658kg/m3The cube compressive strength is 11.69MPa, the heat conductivity coefficient is 0.123W/m.K, and the drying shrinkage value is 0.24 mm/m.
Claims (6)
1. A high-performance foam concrete is characterized in that: the raw materials comprise the following components in parts by weight: 20-30 parts of ordinary portland cement, 2-3 parts of a coagulant, 10-20 parts of fly ash, 3-7 parts of an excitant, 2-3 parts of a water reducing agent, 3-5 parts of polyacrylamide, 2-3 parts of cellulose ether, 0.5-1 part of polyvinyl alcohol, 0.5-1 part of fiber, 9-12 parts of a foaming agent and 20-30 parts of water;
the coagulant is a mixture of sodium aluminate and sodium silicate;
the fibers are a mixture of polypropylene fibers, polyester fibers and glass fibers;
the foaming agent is sodium dodecyl benzene sulfonate and sodium bentonite;
the excitant is quicklime.
2. The high performance foamed concrete according to claim 1, characterized in that: the weight ratio of the sodium aluminate to the sodium silicate is 1: 1-2.
3. The high performance foamed concrete according to claim 1, characterized in that: the weight ratio of the sodium dodecyl benzene sulfonate to the sodium bentonite is 2: 1-2.
4. The high performance foamed concrete according to claim 1, characterized in that: the water reducing agent is a polycarboxylate water reducing agent or a naphthalenesulfonate water reducing agent.
5. The high performance foamed concrete according to claim 1, characterized in that: the weight average molecular weight of the polyacrylamide is 600 ten thousand.
6. The method for producing high-performance foamed concrete according to claim 1, wherein: the method comprises the following steps:
step 1, mixing and grinding fly ash and an exciting agent to obtain a grinding material;
step 2, adding ordinary portland cement, a coagulant, a grinding material, a water reducing agent, polyacrylamide, cellulose ether, polyvinyl alcohol and fibers into water, and stirring to obtain mortar;
and 3, adding a foaming agent into the mortar obtained in the step 2, and uniformly stirring to obtain the high-performance foam concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810618200.1A CN110606708A (en) | 2018-06-15 | 2018-06-15 | High-performance foam concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810618200.1A CN110606708A (en) | 2018-06-15 | 2018-06-15 | High-performance foam concrete and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110606708A true CN110606708A (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810618200.1A Withdrawn CN110606708A (en) | 2018-06-15 | 2018-06-15 | High-performance foam concrete and preparation method thereof |
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| CN (1) | CN110606708A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115636640A (en) * | 2022-10-18 | 2023-01-24 | 青岛中邦新材料科技有限公司 | Foam concrete material and preparation method thereof |
-
2018
- 2018-06-15 CN CN201810618200.1A patent/CN110606708A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115636640A (en) * | 2022-10-18 | 2023-01-24 | 青岛中邦新材料科技有限公司 | Foam concrete material and preparation method thereof |
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20191224 |