CN111056796A - Crack-resistant ash concrete hollow partition plate and manufacturing method thereof - Google Patents

Crack-resistant ash concrete hollow partition plate and manufacturing method thereof Download PDF

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Publication number
CN111056796A
CN111056796A CN201911308515.7A CN201911308515A CN111056796A CN 111056796 A CN111056796 A CN 111056796A CN 201911308515 A CN201911308515 A CN 201911308515A CN 111056796 A CN111056796 A CN 111056796A
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China
Prior art keywords
crack
hollow partition
concrete hollow
partition board
short fibers
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CN201911308515.7A
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Chinese (zh)
Inventor
何骞
张仲曦
喻洪平
徐瑜
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Sichuan Desheng Green New Material Technology Co Ltd
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Sichuan Desheng Green New Material Technology Co Ltd
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Priority to CN201911308515.7A priority Critical patent/CN111056796A/en
Publication of CN111056796A publication Critical patent/CN111056796A/en
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    • 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
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • 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
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34Non-shrinking or non-cracking materials
    • C04B2111/343Crack resistant materials
    • 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
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40Porous or lightweight materials
    • 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
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses an anti-crack ash slag concrete hollow partition board, which comprises furnace burden, wherein the furnace burden comprises the following components in percentage by mass: granulated slag, portland cement, fly ash and rice stone; polypropylene short fibers and water are also added into the furnace burden. The embodiment of the invention also provides a manufacturing method of the crack-resistant ash slag concrete hollow partition board, which comprises the following steps: uniformly stirring furnace burden, polypropylene short fibers and water; then preparing a partition board and steaming; and naturally curing after steaming to obtain the finished product. Therefore, the ash concrete hollow partition board prepared by the formula and the method has the advantages of high compactness, high bending pressure strength, obvious crack resistance effect, sound insulation capacity decibel of 41 db-50 db, high fire resistance, good heat insulation performance and the like, has the advantages of solid waste utilization and environmental protection, reduces the production cost, reduces garbage in the installation process, improves the effective use area of buildings and the like.

Description

Crack-resistant ash concrete hollow partition plate and manufacturing method thereof
Technical Field
The invention relates to the field of building materials, in particular to an anti-crack ash concrete hollow partition board and a manufacturing method thereof.
Background
The granulated slag refers to slag of an iron-making blast furnace. It is in high-temperature molten state, and is quickly cooled by using water to form granulated foam shape, and its quality is light, crisp, porous and easy to grind into fine powder.
At present, in the manufacturing process of the ash concrete hollow partition board, in order to improve the utilization rate of energy, expanded slag is adopted as a raw material in a plurality of technologies for production, but in the process of taking out of a kiln, turning and packaging, and the process of piling up, loading and unloading vehicles, the water slag is generally light aggregate, so that the brittleness is higher, the bearing stress is concentrated, and the self bearing limit is exceeded, so that the problems of cracks and broken plates are very easily generated.
Disclosure of Invention
In order to solve the technical problems, embodiments of the present invention provide an anti-crack hollow partition board made of ash concrete and a manufacturing method thereof, which can improve the strength of the manufactured ash concrete hollow partition board and improve the phenomena that the ash concrete hollow partition board is easy to crack and break.
In order to achieve the purpose, the technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides an anti-crack ash slag concrete hollow partition board, which comprises furnace burden, wherein the furnace burden comprises the following components in percentage by mass:
50-60% of granulated slag, 20-30% of portland cement, 5-10% of fly ash and 10-16% of rice stone;
the furnace charge is characterized in that polypropylene short fibers and water are added into the furnace charge, wherein the addition amount of the polypropylene short fibers is 0.06-0.07% of the total mass of the furnace charge, and the addition amount of the water is 8-10% of the total mass of the furnace charge.
In the embodiment of the invention, the furnace burden comprises the following components in percentage by mass:
50-55% of granulated slag, 25-30% of portland cement, 6-8% of fly ash and 13-15% of rice stone.
In the embodiment of the invention, the addition amount of the water is 8% of the total mass of the furnace burden.
In the embodiment of the invention, the grain size of the grain slag is 0-5 mm, and the grain size of the rice stone is 5-10 mm.
In the embodiment of the invention, the fly ash comprises the following components in percentage by mass:
Loss:0.27~0.30%;
SiO2:34.00~35.00%;
Al2O3:15.00~16.00%;
Fe2O3:4.50~4.70%;
CaO:34.20~34.50%;
MgO:7.50~8.00%;
SO3:0.30~0.50%;
R2O:∑95.77~99.00%;
impurities: the balance;
wherein Loss represents Loss on ignition, R2O represents an oxide of an alkali metal.
In the embodiment of the invention, the tensile strength of the polypropylene short fiber is more than 400Mpa, and the elastic modulus of the polypropylene short fiber is more than 3.5 Gpa.
A method for manufacturing a crack-resistant ash concrete hollow partition board comprises the following steps:
after weighing the components in the furnace burden according to the weight percentage, adding polypropylene short fibers and water for uniform stirring;
after the primary stirring, secondarily stirring the furnace burden, the polypropylene short fibers and the water until the furnace burden, the polypropylene short fibers and the water are uniform;
preparing the uniformly stirred furnace burden, the polypropylene short fibers and the water into a partition plate, and steaming the partition plate;
and naturally curing the steamed hollow partition plate blank to obtain a finished hollow partition plate.
In the embodiment of the invention, when the partition board is steamed, the partition board is firstly kept stand for 180 minutes at room temperature, then is uniformly heated to 30 ℃ within 90 minutes, then is uniformly heated to 45 ℃ within 90 minutes, and finally is uniformly heated to 60 ℃ within 150 minutes, and is steamed at the constant temperature for 180 minutes at the ambient temperature of 60 ℃.
In the embodiment of the invention, the natural curing time is at least 28 days.
The embodiment of the invention provides an anti-crack ash slag concrete hollow partition board, which comprises furnace burden, wherein the furnace burden comprises the following components in percentage by mass: 50-60% of granulated slag, 20-30% of portland cement, 5-10% of fly ash and 10-16% of rice stone; the furnace charge is characterized in that polypropylene short fibers and water are added into the furnace charge, wherein the addition amount of the polypropylene short fibers is 0.06-0.07% of the total mass of the furnace charge, and the addition amount of the water is 8-10% of the total mass of the furnace charge. The embodiment of the invention also provides a manufacturing method of the crack-resistant ash slag concrete hollow partition board, which comprises the following steps: after weighing the components in the furnace burden according to the weight percentage, adding polypropylene short fibers and water for uniform stirring; processing the uniformly stirred furnace burden, polypropylene short fibers and water into a hollow partition plate blank; preparing the initial-set hollow partition plate blank into a partition plate, and steaming the partition plate; and naturally curing the steamed hollow partition plate blank to obtain a finished hollow partition plate. Therefore, the ash concrete hollow partition board prepared by the formula and the method has the advantages of high compactness, high bending pressure strength, obvious crack resistance effect, sound insulation capacity decibel of 41 db-50 db, high fire resistance (2.98 h), good thermal insulation performance (heat conductivity coefficient of 0.1win), solid waste utilization and environmental protection, production cost reduction, reduction of garbage in the installation process, improvement of the effective use area of a building and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below.
The embodiment of the invention provides an anti-crack ash slag concrete hollow partition board, which comprises furnace burden, wherein the furnace burden comprises the following components in percentage by mass: 50-60% of granulated slag, 20-30% of portland cement, 5-10% of fly ash and 10-16% of rice stone; the furnace charge is characterized in that polypropylene short fibers and water are added into the furnace charge, wherein the addition amount of the polypropylene short fibers is 0.06-0.07% of the total mass of the furnace charge, and the addition amount of the water is 8-10% of the total mass of the furnace charge.
The granulated slag is vanadium-titanium smelting high-titanium blast furnace water flushing slag, and when the granulated slag is used, the grain diameter of the granulated slag is 0-5 mm. The portland cement is ordinary po 42.5-grade low-alkali portland cement available in the market at present, and the fly ash comprises the following components in percentage by mass: loss: 0.27-0.30%; SiO 22:34.00~35.00%;Al2O3:15.00~16.00%;Fe2O3:4.50~4.70%;CaO:34.20~34.50%;MgO:7.50~8.00%;SO3:0.30~0.50%;R2O: sigma 95.77-99.00%; impurities: the balance; wherein Loss represents Loss on ignition, R2O represents an oxide of an alkali metal; the rice stone is rice stone which is well known to those skilled in the art, and the particle size of the rice stone is 5-10 mm.
Further, the polypropylene staple fibers are made from polypropylene particles by hot-melt extrusion in a continuous process. The fiber is subjected to special antistatic and ultraviolet resistant treatment, so that the fiber is uniformly dispersed in mortar and can exert the effect for a long time, and the physical and chemical properties of the fiber are as follows when the fiber is used:
fiber type: specification of bundle-shaped monofilament: 3mm, 6mm, 9mm, 12mm, fiber diameter: 48um, tensile strength: greater than 400Mpa, acid and base resistance: extremely high, modulus of elasticity: greater than 3.5Gpa, safety: non-toxic materials, low temperature resistance: the fiber performance is not changed through the test detection of minus 78 ℃. Aging resistance: and the polypropylene short fibers need to be subjected to special anti-aging treatment.
Here, the polypropylene staple fiber can improve crack resistance, impermeability, abrasion resistance, freezing resistance, blast resistance and workability of mortar/concrete.
In concrete, the polypropylene short fibers are distributed in a random manner, so that the plastic shrinkage and stress during freeze thawing of the concrete can be greatly weakened, the toughness of mortar is effectively enhanced, and the generation of micro cracks is inhibited. After the concrete added with the polypropylene short fibers is solidified, the high-strength fiber yarns of the cement are adhered into a compact net-shaped reinforcing system distributed in a disorderly direction, so that the toughness of the concrete is improved, and the ultimate elongation is improved. When the concrete is impacted, the fibers absorb a large amount of energy, so that the impact resistance and the shock resistance of the concrete are enhanced. The elasticity modulus of the polypropylene short fibers doped in the concrete is greatly different from that of the common concrete, and the tensile deformation limit of the polypropylene short fibers doped in the concrete is obviously higher than that of the common concrete.
Further, the embodiment of the invention also provides a manufacturing method of the crack-resistant ash concrete hollow partition board, which comprises the following steps:
after weighing the components in the furnace burden according to the weight percentage, adding polypropylene short fibers and water for uniform stirring; processing the uniformly stirred furnace burden, polypropylene short fibers and water into a hollow partition plate blank; preparing the initial-set hollow partition plate blank into a partition plate, and steaming the partition plate; and naturally curing the steamed hollow partition plate blank to obtain a finished hollow partition plate.
Example one
The embodiment of the invention provides an anti-crack ash slag concrete hollow partition board, which comprises furnace burden, wherein the furnace burden comprises the following components in percentage by mass: 50% of granulated slag, 30% of Portland cement, 5% of fly ash and 15% of rice stone; polypropylene short fibers and water are added into the furnace burden, wherein the addition amount of the polypropylene short fibers is 0.06% of the total mass of the furnace burden, and the addition amount of the water is 10% of the total mass of the furnace burden.
Wherein the fly ash comprises the following components in percentage by mass: loss: 0.27 percent; SiO 22:35.00%;Al2O3:15.00%;Fe2O3:4.70%;CaO:34.20%;MgO:8.00%;SO3:0.30%;R2O: Σ 97.47%; impurities: and (4) the balance.
Here, when the mass of the charge is 1500kg, the mass of the granulated slag is 750kg, the mass of the portland cement is 450kg, the mass of the fly ash is 75kg, the mass of the rice stone is 225kg, the mass of the polypropylene short fiber is 0.9kg, and the mass of the water is 150 kg. 1500kg of furnace charge, 0.9kg of the polypropylene staple fibers and 150kg of water are put into a stirrer and stirred, wherein the rated frequency of stirring is 50HZ, and the stirring time is at least 270 seconds. After stirring, conveying materials by adopting a conveyor belt, and manufacturing the crack-resistant ash slag concrete hollow partition plate blank.
Then cutting the slab of the crack-resistant ash slag concrete hollow partition wall as required after initial setting to obtain the partition wall board, and then feeding the partition wall board into a steam curing kiln for steam curing; during steam curing, the partition board is stood still at room temperature for 180 minutes, then the first stage of heating is carried out, the temperature is uniformly raised to 30 ℃ within 90 minutes, then the second stage of heating is carried out, namely the temperature is uniformly raised to 45 ℃ within 90 minutes, finally the third stage of heating is carried out, namely the temperature is uniformly raised to 60 ℃ within 150 minutes, and the constant temperature steam curing is carried out for 180 minutes under the condition that the ambient temperature is maintained at 60 ℃. After the constant-temperature steam curing is finished, cooling is carried out, and during cooling, a kiln door is opened for three times: lifting for about 20cm for the first time, and discharging steam in the kiln; lifting the kiln door for a second time by about 50%; cooling for 1 hour; and lifting the kiln door completely for the third time, wherein the cooling time is not less than 2 hours.
And naturally curing the steamed hollow partition plate blank for 28 days to obtain a finished hollow partition plate.
Example two
The embodiment of the invention provides an anti-crack ash slag concrete hollow partition board, which comprises furnace burden, wherein the furnace burden comprises the following components in percentage by mass: 60% of granulated slag, 20% of portland cement, 10% of fly ash and 10% of rice stone; the charging material is also added with polypropylene short fibers and water, wherein the addition amount of the polypropylene short fibers is 0.07 percent of the total mass of the charging material, and the addition amount of the water is 8 percent of the total mass of the charging material.
Wherein the fly ash comprises the following components in percentage by mass: : loss: 0.30 percent; SiO 22:34.00%;Al2O3:16.00%;Fe2O3:4.50%;CaO:34.50%;MgO:7.50%;SO3:0.50%;R2O: sigma 97.3 percent; impurities: and (4) the balance.
Here, when the mass of the charge is 1500kg, the mass of the granulated slag is 900kg, the mass of the portland cement is 300kg, the mass of the fly ash is 150kg, the mass of the rice stone is 150k, the mass of the polypropylene short fiber is 1.05kg, and the mass of the water is 120 kg. 1500kg of furnace charge, 1.05kg of the polypropylene staple fibers and 120kg of water are put into a stirrer and stirred, wherein the rated frequency of stirring is 50HZ, and the stirring time is at least 270 seconds. After stirring, conveying materials by adopting a conveyor belt, and manufacturing the crack-resistant ash slag concrete hollow partition plate blank.
Then cutting the slab of the crack-resistant ash slag concrete hollow partition wall as required after initial setting to obtain the partition wall board, and then feeding the partition wall board into a steam curing kiln for steam curing; during steam curing, the partition board is firstly stood still at room temperature for 180 minutes, then the first-stage heating is carried out, the temperature is uniformly raised to 30 ℃ within 90 minutes, then the second-stage heating is carried out, namely the temperature is uniformly raised to 45 ℃ within 90 minutes, finally the third-stage heating is carried out, namely the temperature is uniformly raised to 60 ℃ within 150 minutes, the temperature is maintained at 60 ℃, the constant temperature steam curing is carried out for 180 minutes, after the constant temperature steam curing is finished, the temperature is reduced, and when the temperature is reduced, a kiln door is opened for three times: lifting for about 20cm for the first time, and discharging steam in the kiln; lifting the kiln door for a second time by about 50%; cooling for 1 hour; and lifting the kiln door completely for the third time, wherein the cooling time is not less than 2 hours.
And naturally curing the steamed hollow partition plate blank for 28 days to obtain a finished hollow partition plate.
EXAMPLE III
The embodiment of the invention provides an anti-crack ash slag concrete hollow partition board, which comprises furnace burden, wherein the furnace burden comprises the following components in percentage by mass: 54% of granulated slag, 25% of Portland cement, 6% of fly ash and 15% of millstone; the furnace charge is characterized in that polypropylene short fibers and water are added into the furnace charge, wherein the addition amount of the polypropylene short fibers is 0.06-0.07% of the total mass of the furnace charge, and the addition amount of the water is 8% of the total mass of the furnace charge.
Wherein the fly ash comprises the following components in percentage by mass: : loss: 0.28 percent; SiO 22:34.00%;Al2O3:15.00%;Fe2O3:4.60%;CaO:34.40%;MgO:7.60%;SO3:0.40%;R2O: sigma 96.28%; impurities: and (4) the balance.
Here, when the mass of the charge is 1500kg, the mass of the granulated slag is 810kg, the mass of the portland cement is 375kg, the mass of the fly ash is 90kg, the mass of the rice stone is 225kg, the mass of the polypropylene short fiber is 1kg, and the mass of the water is 120 kg. 1500kg of furnace charge, 1kg of the polypropylene staple fibers and 120kg of water are put into a stirrer to be stirred, wherein the rated frequency of stirring is 50HZ, and the stirring time is at least 270 seconds. After stirring, conveying materials by adopting a conveyor belt, and manufacturing the crack-resistant ash slag concrete hollow partition plate blank.
Then cutting the slab of the crack-resistant ash slag concrete hollow partition wall as required after initial setting to obtain the partition wall board, and then feeding the partition wall board into a steam curing kiln for steam curing; during steam curing, the partition board is firstly stood still at room temperature for 180 minutes, then the first-stage heating is carried out, the temperature is uniformly raised to 30 ℃ within 90 minutes, then the second-stage heating is carried out, namely the temperature is uniformly raised to 45 ℃ within 90 minutes, finally the third-stage heating is carried out, namely the temperature is uniformly raised to 60 ℃ within 150 minutes, the temperature is maintained at 60 ℃, the constant temperature steam curing is carried out for 180 minutes, after the constant temperature steam curing is finished, the temperature is reduced, and when the temperature is reduced, a kiln door is opened for three times: lifting for about 20cm for the first time, and discharging steam in the kiln; lifting the kiln door for a second time by about 50%; cooling for 1 hour; and lifting the kiln door completely for the third time, wherein the cooling time is not less than 2 hours.
And naturally curing the steamed hollow partition plate blank for 28 days to obtain a finished hollow partition plate.
Example four
The embodiment of the invention provides an anti-crack ash slag concrete hollow partition board, which comprises furnace burden, wherein the furnace burden comprises the following components in percentage by mass: 50% of granulated slag, 27% of portland cement, 8% of fly ash and 15% of rice stone; the furnace charge is characterized in that polypropylene short fibers and water are added into the furnace charge, wherein the addition amount of the polypropylene short fibers is 0.06-0.07% of the total mass of the furnace charge, and the addition amount of the water is 8% of the total mass of the furnace charge.
Wherein the fly ash comprises the following components in percentage by mass: : loss: 0.28 percent; SiO 22:34.00%;Al2O3:15.00%;Fe2O3:4.60%;CaO:34.40%;MgO:7.60%;SO3:0.40%;R2O: sigma 96.28%; impurities: and (4) the balance.
Here, when the mass of the charge is 1500kg, the mass of the granulated slag is 750kg, the mass of the portland cement is 405kg, the mass of the fly ash is 120kg, the mass of the rice stone is 225kg, the mass of the polypropylene short fiber is 1kg, and the mass of the water is 120 kg. 1500kg of furnace charge, 1kg of the polypropylene staple fibers and 120kg of water are put into a stirrer to be stirred, wherein the rated frequency of stirring is 50HZ, and the stirring time is at least 270 seconds. After stirring, conveying materials by adopting a conveyor belt, and manufacturing the crack-resistant ash slag concrete hollow partition plate blank.
Then cutting the slab of the crack-resistant ash slag concrete hollow partition wall as required after initial setting to obtain the partition wall board, and then feeding the partition wall board into a steam curing kiln for steam curing; during steam curing, the partition board is firstly stood still at room temperature for 180 minutes, then the first-stage heating is carried out, the temperature is uniformly raised to 30 ℃ within 90 minutes, then the second-stage heating is carried out, namely the temperature is uniformly raised to 45 ℃ within 90 minutes, finally the third-stage heating is carried out, namely the temperature is uniformly raised to 60 ℃ within 150 minutes, the temperature is maintained at 60 ℃, the constant temperature steam curing is carried out for 180 minutes, after the constant temperature steam curing is finished, the temperature is reduced, and when the temperature is reduced, a kiln door is opened for three times: lifting for about 20cm for the first time, and discharging steam in the kiln; lifting the kiln door for a second time by about 50%; cooling for 1 hour; and lifting the kiln door completely for the third time, wherein the cooling time is not less than 2 hours.
And naturally curing the steamed hollow partition plate blank for 28 days to obtain a finished hollow partition plate.
EXAMPLE five
The crack slag resistant concrete hollow partition wall boards obtained in the first to fourth examples were measured, and the results of the measurements are shown in table 1.
Table 1, crack slag resistant concrete hollow partition board performance measurement parameter table.
As shown in Table 1, the addition of a certain amount of polypropylene short fibers increases the areal density of the product by 4.9-7.1 kg/m2(ii) a The product compactness is more excellent; the bending resistance load is improved by 0.03-0.07 time; and the mechanical property parameters of the partition board are improved. The compressive strength is improved by 0.9-1.5 MPa. And the mechanical property parameters of the partition board are improved.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.

Claims (9)

1. The crack-resistant ash slag concrete hollow partition board is characterized by comprising furnace burden, wherein the furnace burden comprises the following components in percentage by mass:
50-60% of granulated slag, 20-30% of portland cement, 5-10% of fly ash and 10-16% of rice stone;
the furnace charge is characterized in that polypropylene short fibers and water are added into the furnace charge, wherein the addition amount of the polypropylene short fibers is 0.06-0.07% of the total mass of the furnace charge, and the addition amount of the water is 8-10% of the total mass of the furnace charge.
2. The crack-resistant ash slag concrete hollow partition board according to claim 1, wherein the furnace burden comprises the following components in percentage by mass:
50-55% of granulated slag, 25-30% of portland cement, 6-8% of fly ash and 13-15% of rice stone.
3. The crack-resistant ash concrete hollow partition board according to claim 1, wherein the amount of water added is 8% of the total mass of the burden.
4. The crack-resistant ash slag concrete hollow partition board according to claim 1, wherein the grain size of the grain slag is 0-5 mm, and the grain size of the rice stone is 5-10 mm.
5. The crack-resistant ash slag concrete hollow partition board according to claim 1, wherein the fly ash comprises the following components in percentage by mass:
Loss:0.27~0.30%;
SiO2:34.00~35.00%;
Al2O3:15.00~16.00%;
Fe2O3:4.50~4.70%;
CaO:34.20~34.50%;
MgO:7.50~8.00%;
SO3:0.30~0.50%;
R2O:∑95.77~99.00%;
impurities: the balance;
wherein Loss represents Loss on ignition, R2O represents an oxide of an alkali metal.
6. The crack-resistant ash concrete hollow partition wall board according to claim 1, wherein the tensile strength of the polypropylene short fibers is greater than 400Mpa, and the elastic modulus of the polypropylene short fibers is greater than 3.5 Gpa.
7. The method for manufacturing the crack slag resistant concrete hollow partition board according to any one of claims 1 to 6, wherein the method comprises the following steps:
weighing the components in the furnace burden according to the weight percentage, then carrying out primary stirring, and adding polypropylene short fibers and water in the primary stirring process;
after the primary stirring, secondarily stirring the furnace burden, the polypropylene short fibers and the water until the furnace burden, the polypropylene short fibers and the water are uniform;
preparing the uniformly stirred furnace burden, the polypropylene short fibers and the water into a partition plate, and steaming the partition plate;
and naturally curing the steamed hollow partition plate blank to obtain a finished hollow partition plate.
8. The method for manufacturing the crack-resistant ash concrete hollow partition board according to claim 7, wherein the partition board is steamed for 180 minutes at room temperature, then uniformly heated to 30 ℃ within 90 minutes, then uniformly heated to 45 ℃ within 90 minutes, finally uniformly heated to 60 ℃ within 150 minutes, and then steamed for 180 minutes at a constant temperature at an ambient temperature of 60 ℃.
9. The method for manufacturing the crack-resistant clinker concrete hollow partition board according to claim 7, wherein the natural curing time is at least 28 days.
CN201911308515.7A 2019-12-18 2019-12-18 Crack-resistant ash concrete hollow partition plate and manufacturing method thereof Pending CN111056796A (en)

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