CN113354355A - Preparation method of novel POM fiber EPS composite ultra-light concrete material - Google Patents
Preparation method of novel POM fiber EPS composite ultra-light concrete material Download PDFInfo
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- CN113354355A CN113354355A CN202110626033.7A CN202110626033A CN113354355A CN 113354355 A CN113354355 A CN 113354355A CN 202110626033 A CN202110626033 A CN 202110626033A CN 113354355 A CN113354355 A CN 113354355A
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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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0675—Macromolecular compounds fibrous from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
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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
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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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation method of a novel POM fiber EPS composite ultra-light concrete material, which comprises the following steps: the method comprises the following steps: preparing an EPS light concrete material: preparing raw materials of ordinary portland cement PO42.5, river sand, water, silicon powder, quartz powder, a water reducing agent and EPS polystyrene particles in advance, adding the water reducing agent and EPS polystyrene plastic particles; step two: and (3) firstly, blending the water reducing agent into water in the stirring process, then, blending into the mortar, adding the POM copolyoxymethylene fiber, and blending the consistency of the mortar in the stirring process for 4 minutes. The light concrete material prepared by the invention realizes 1677kg/m3Compared with the traditional concrete, the self weight of the concrete is reduced by 33 percent, and the standard of 28 days is realizedThe compressive strength of the quasi-cube reaches 30Mpa, the heat conductivity coefficient is 0.31W/m.K, the quasi-cube is only 1/3-1/4 of the traditional concrete material, the optimal comprehensive performance of the ultra-light concrete material is realized, and the quasi-cube has excellent market application potential.
Description
Technical Field
The invention belongs to the technical field of concrete materials, and particularly relates to a preparation method of a novel POM fiber EPS composite ultra-light concrete material.
Background
The traditional concrete material has the defects of self-significance (2400-. Especially, in recent years, the development of the technology for developing the fabricated concrete is greatly advocated in China, construction enterprises are objectively required to prepare reinforced concrete members in fabricated member factories in advance and realize field assembly combination as much as possible, but the following problems generally exist in the actual construction process of the fabricated construction enterprises at present: 1. the assembled building meets the requirement of good anti-seismic performance, because the assembled building is assembled and installed on site, the overall anti-seismic performance of the building is poorer than that of the traditional cast-in-place building, if the anti-seismic performance of the assembled building is partially improved, the times and the scale of assembling and combining the components are objectively required to be reduced as much as possible, so that the assembled integrated toilet and the integrated balcony have the new problem for construction units in recent years, the self weight of the integrated toilet, kitchen or balcony components prepared by adopting the traditional concrete is too large, serious risks and difficulties exist in the process of hoisting high-rise buildings on site, the traditional tower crane cannot hoist the heavy large-scale assembled components, the problem is overcome, one of the solution ways is to research the components made of light and ultra-light concrete materials (the self weight of the materials is at least reduced by 1/3 compared with the traditional concrete, namely, it is<1700kg/m3) Thereby realizing the function of the assembly type integrated component and simultaneously realizing the reduction of the self weight of the component; 2. the traditional concrete material has large heat conductivity coefficient (more than or equal to 1.28W/m.K), poor heat insulation performance and large energy consumption in the long-term use process of a building, and the foreign traditional wood structure house has better heat insulation performance because the heat conductivity coefficient of wood is low and is only between 0.08 and 0.13W/m.K, which is only one tenth of that of the concrete material, and the asbestos (0.15), the cement perlite (0.07 to 0.09) and the polystyrene EPS foam plastic (0.08) used by the traditional external wall heat insulation board have low heat conductivity coefficient, good heat insulation performance but too low stress strength, and how to realize the low heat conductivity coefficient by blending the ultra-light concrete material can realize the optimization of comprehensive performance. 3. The traditional concrete has large dead weight, low tensile strength and poor crack resistance,the concrete member is usually in a crack working state, and under the premise that the self weight of the POM ultra-light concrete material is reduced, the anti-cracking performance of the concrete member is effectively improved due to the addition of the POM fibers (the tensile strength is more than or equal to 70Mpa), so that the application range of the novel light concrete material is expanded.
Disclosure of Invention
In order to overcome the problems, the invention provides a preparation method of a novel POM fiber EPS composite ultra-light concrete material.
The technical scheme adopted by the invention is as follows:
the preparation method of the novel POM fiber EPS composite ultra-light concrete material comprises the following steps:
the method comprises the following steps: preparing an EPS light concrete material: preparing raw materials of ordinary portland cement PO42.5, river sand, water, silicon powder, quartz powder, a water reducing agent and EPS polystyrene particles in advance, wherein the mixing proportion is as follows: ordinary portland cement PO 42.5: river sand: water: silicon powder: 1, quartz powder: 1.08: 0.26: 0.25: 0.35, adding a water reducing agent according to 2 percent of the weight of the gel material, and adding EPS polystyrene plastic particles with the particle size of 3mm-5mm according to 36 percent of the volume of the cement;
step two: during the stirring process, firstly, the water reducing agent is blended into water, then the water reducing agent is blended into mortar, POM (polyoxymethylene) copolyoxymethylene fibers with the length of 6mm-8mm are added according to the volume blending amount of 1.5% -2% of the volume of the gel material, the consistency of the mortar is well blended during the stirring process, EPS (expandable polystyrene) particles and the fibers are uniformly distributed in the mortar, and the stirring time is 4 minutes.
The invention has the following advantages:
1. the selected cloudy POM fiber has the advantages of excellent thermal stability, durability, alkali resistance, high tensile breaking strength, high elastic modulus and the like, and becomes an essential excellent material for preparing the ultra-high performance concrete material, and the specific parameters are as follows: the diameter is 0.2 +/-0.02 mm, the linear density is 450 +/-90 dtex, the breaking strength is more than or equal to 898Mpa, the elongation at break is less than or equal to 20 percent, the elastic modulus is more than or equal to 7000Mpa, and a novel ultra-light high-performance concrete material can be prepared by adding POM fibers, so that good stress performance is realized;
2. the light concrete material realizes1677kg/m3Compared with the traditional concrete, the weight of the concrete is reduced by 33%, the 28-day standard cube compressive strength reaches 30Mpa, the heat conductivity coefficient is 0.31W/m.K, the concrete is only 1/3-1/4 of the traditional concrete material, the optimal comprehensive performance of the ultra-light concrete material is realized, and the concrete has excellent market application potential.
Detailed Description
The present invention will be further described below, but the present invention is not limited to these.
Examples
The preparation method of the novel POM fiber EPS composite ultra-light concrete material comprises the following steps:
the method comprises the following steps: preparing an EPS light concrete material: preparing raw materials of ordinary portland cement PO42.5, river sand, water, silicon powder, quartz powder, a water reducing agent and EPS polystyrene particles in advance, wherein the mixing proportion is as follows: ordinary portland cement PO 42.5: river sand: water: silicon powder: 1, quartz powder: 1.08: 0.26: 0.25: 0.35, adding a water reducing agent according to 2 percent of the weight of the gel material, and adding EPS polystyrene plastic particles with the particle size of 3mm-5mm according to 36 percent of the volume of the cement;
step two: during the stirring process, firstly, the water reducing agent is blended into water, then the water reducing agent is blended into mortar, POM (polyoxymethylene) copolyoxymethylene fibers with the length of 6mm-8mm are added according to the volume blending amount of 1.5% -2% of the volume of the gel material, the consistency of the mortar is well blended during the stirring process, EPS (expandable polystyrene) particles and the fibers are uniformly distributed in the mortar, and the stirring time is 4 minutes.
The cement particles have the average particle size of 8-10 mu m, the silica fume particles have the average particle size of 0.1-0.3 mu m, and the 3000-5000 mesh quartz powder particles have the average particle size of 2-3 mu m, so that the smaller porosity and the excellent compactness of the combined concrete material can be realized by matching the three materials together with a proper amount of water reducing agent, and the mechanical property of the concrete can be improved; the polystyrene plastic particles have light dead weight and low heat conductivity coefficient, and after the polystyrene plastic particles and the POM fibers are added into a concrete material according to a certain proportion, the super-light concrete material can reduce the dead weight and simultaneously can increase the heat insulation performance and the mechanical property of the material, thereby realizing all three performance targets of the novel light concrete material.
According to the result of the method, the lightweight concrete material has already achieved 1677kg/m3Compared with the traditional concrete, the weight of the concrete is reduced by 33%, the 28-day standard cube compressive strength reaches 30Mpa, the heat conductivity coefficient is 0.31W/m.K, the concrete is only 1/4 of the traditional concrete material, the optimal comprehensive performance of the ultra-light concrete material is realized, and the concrete has excellent market application potential.
It is noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (3)
1. The preparation method of the novel POM fiber EPS composite ultra-light concrete material is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: preparing an EPS light concrete material: preparing raw materials of ordinary portland cement PO42.5, river sand, water, silicon powder, quartz powder, a water reducing agent and EPS polystyrene particles in advance, adding the water reducing agent and EPS polystyrene plastic particles;
step two: and (3) firstly, blending the water reducing agent into water in the stirring process, then, blending into the mortar, adding the POM copolyoxymethylene fiber, and blending the consistency of the mortar in the stirring process for 4 minutes.
2. The preparation method of the novel POM fiber EPS composite ultra-light concrete material according to claim 1, characterized in that: in the first step, the mixing proportion of ordinary portland cement PO42.5, river sand, water, silicon powder and quartz powder is 1: 1.08: 0.26: 0.25: 0.35 percent of water reducing agent, the addition amount of which is 2 percent of the weight of the gel material, the addition amount of EPS polystyrene plastic particles is 36 percent of the volume of the cement, and the particle size of the EPS polystyrene plastic particles is 3mm-5 mm.
3. The preparation method of the novel POM fiber EPS composite ultra-light concrete material according to claim 1, characterized in that: in the second step, the volume mixing amount of the POM copolymerized formaldehyde fiber is 1.5-2% of the volume of the gel material, and the length of the POM copolymerized formaldehyde fiber is 6-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626033.7A CN113354355A (en) | 2021-06-04 | 2021-06-04 | Preparation method of novel POM fiber EPS composite ultra-light concrete material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626033.7A CN113354355A (en) | 2021-06-04 | 2021-06-04 | Preparation method of novel POM fiber EPS composite ultra-light concrete material |
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| Publication Number | Publication Date |
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| CN113354355A true CN113354355A (en) | 2021-09-07 |
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| CN202110626033.7A Pending CN113354355A (en) | 2021-06-04 | 2021-06-04 | Preparation method of novel POM fiber EPS composite ultra-light concrete material |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603232A (en) * | 2010-12-16 | 2012-07-25 | 提克纳有限责任公司 | Polyoxymethylene fibers in concrete |
| CN103145378A (en) * | 2013-01-28 | 2013-06-12 | 熊建珍 | Expandable polystyrene (EPS) anti-cracking concrete and preparation method thereof |
-
2021
- 2021-06-04 CN CN202110626033.7A patent/CN113354355A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603232A (en) * | 2010-12-16 | 2012-07-25 | 提克纳有限责任公司 | Polyoxymethylene fibers in concrete |
| CN103145378A (en) * | 2013-01-28 | 2013-06-12 | 熊建珍 | Expandable polystyrene (EPS) anti-cracking concrete and preparation method thereof |
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Application publication date: 20210907 |
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