CN109809785A - A kind of lightweight scratch coat gypsum mortar and preparation method - Google Patents
A kind of lightweight scratch coat gypsum mortar and preparation method Download PDFInfo
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- CN109809785A CN109809785A CN201910259761.1A CN201910259761A CN109809785A CN 109809785 A CN109809785 A CN 109809785A CN 201910259761 A CN201910259761 A CN 201910259761A CN 109809785 A CN109809785 A CN 109809785A
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- gypsum mortar
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Abstract
A kind of lightweight scratch coat gypsum mortar of the invention, the component including following weight point: 477 parts of desulfurized gypsum；332~470 parts of flyash；Artificial 8~12 parts of fine sand of mechanism；40~180 parts of closed pore glass bead；1 part of rubber powder；1~2 part of retarder；2 parts of water-retaining agent.The lightweight scratch coat gypsum mortar utilizes the waste of thermal power generation; pollution can be reduced very well; and product intensity fully meets technical requirements; light-weight, bonding force is big, be not pulverized easily, do not crack, not hollowing, do not lose powder; it is more more environmentally friendly than cement; environmental pollution and solid waste are efficiently solved using two hang-ups, ecological environmental protection, economic benefit are increased, reduce the preparation method that there is production cost the positive effect present invention also to propose a kind of lightweight scratch coat gypsum mortar.
Description
Technical field
The present invention relates to a kind of lightweight scratch coat gypsum mortars, belong to building materials technical field.
Background technique
The world today, environment and the energy are two the most urgent hang-ups.In terms of energy supply, China is still in fire
In stage based on power power supply, according to statistics in 2018, firepower electrical plant power generation still occupied 3/4ths of all power generation total amounts,
Thermal power generation is still irreplaceable at present.There is more serious air pollution in thermal power generation, in order to reduce air pollution,
Firepower electrical plant uses flue gas desulfurization of gypsum technology, absorbs the sulfur dioxide in flue gas by gypsum, generates a large amount of flue gas desulfurization
Gypsum waste, desulfurized gypsum deep process technology is immature at present, lacks corresponding technical standard, and processing cost is high, energy consumption is high,
Desulfurized gypsum is caused not recycled effectively.In addition, a large amount of flyash is also created in firepower electrical plant power generation process,
Flyash is the fine ash that catching obtains after coal burning, if untreated can generate dust pollution atmosphere, if being discharged into water system
The noxious material that will cause river to silt up, and wherein contain can also cause damages to the biology in human body and nature.
And on the other hand, with the propulsion of greatly developing of China's infrastructure, demand of the engineering construction to construction material is lacked
Greatly, wherein the shortage of natural sand resource is more prominent for mouth, therefore unrest occurs in some areas and adopt random digging natural sand
Situation causes the ill effect for destroying arable land, river and flood control dam.And natural sand has as natural resources can not be again
It is extremely urgent to find suitable substitute for natural disposition.
In conclusion waste by-product desulfurized gypsum and flyash that thermal power generation is generated carry out comprehensive cyclic utilization,
Substitution natural sand carries out engineer application in environmental protection and economizes on resources upper with biggish positive effect.The purpose of the present invention is
It is to propose a kind of to smear using desulfurized gypsum, the artificial mechanism fine sand of flyash and closed pore glass bead as the lightweight bottom of primary raw material
Grey gypsum mortar.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention proposes a kind of lightweight scratch coat gypsum mortar, can be by firepower
The wastes such as the desulfurized gypsum, the flyash that generate in power generation carry out comprehensive cyclic utilization, and artificial mechanism fine sand is replaced natural sand
Carry out using, and product intensity fully meets technical requirements, it is light-weight, bonding force is big, be not pulverized easily, do not crack, not hollowing,
It does not lose powder, it is more more environmentally friendly than cement, environmental pollution and solid waste are efficiently solved using two hang-ups, to ecological environmental protection, warp
Benefit of helping increases, reduces production cost with positive effect.
To achieve the above object, a kind of lightweight scratch coat gypsum mortar of the invention, the component including following weight point:
Further, desulfurized gypsum uses high whiteness desulfurized gypsum, purity >=85% of desulfurized gypsum.
Further, flyash uses second class powered coal ash, fineness modulus≤30% of flyash.
Further, artificial mechanism fine sand includes broken building stones, building waste residue, landing ash or tailing, artificial mechanism
The partial size of fine sand is 0.25mm~0.35mm.
Further, closed pore glass bead is surface vitreous closing, and the balling ratio of closed pore glass bead is 80~95%, is closed
The bulk density of hole glass bead is 150g/L~180g/L.
Further, retarder is using rotten albumen high-efficient retarder.
Further, rubber powder uses polyvinyl alcohol.
Further, water-retaining agent uses hydroxyethyl ether cellulose, and the viscosity of water-retaining agent is 40000~60000cp.
The present invention proposes a kind of preparation method of lightweight scratch coat gypsum mortar, includes the following steps:
S1: desulfurized gypsum, flyash, artificial mechanism fine sand, closed pore glass bead, rubber powder, retarder, water conservation are quantitatively weighed
Agent is sufficiently mixed in blender；
S2: it takes the water of normal consistency amount to be added in blender, stirs 2min slowly, then stir 2min fastly, obtain required lightweight
Gypsum mortar；
S3: light gypsum mortar obtained in step S2 is quickly packed into the sand die trial of cement triple glue, is conserved at room temperature
For 24 hours, then batten for 24 hours, then is put into electronic air dry oven 42 DEG C drying to constant weight by demoulding maintenance；
S4: taking out batten, upper machine pressure testing after being cooled to room temperature.
A kind of lightweight scratch coat gypsum mortar of the invention can be by the desulfurized gypsum generated in thermal power generation, flyash
Equal wastes carry out comprehensive cyclic utilization, replace natural sand to carry out using and product intensity is completely full artificial mechanism fine sand
Sufficient technical requirements, light-weight, bonding force is big, be not pulverized easily, do not crack, not hollowing, do not lose powder, it is more more environmentally friendly than cement, effectively solve
Environmental pollution and the solid waste of having determined increase ecological environmental protection, economic benefit, reduce production cost and have using two hang-ups
Positive effect.
Specific embodiment
Below by by the description to the preferred embodiment of the present invention, skill of the invention is more clearly and completely illustrated
Art scheme.
Embodiment 1: the preparation of lightweight scratch coat gypsum mortar, comprising the following steps:
S1: desulfurized gypsum 477kg, second class powered coal ash 332kg, artificial mechanism fine sand 8kg, closed pore glass bead are quantitatively weighed
40kg, polyvinyl alcohol 1kg, rotten albumen retarder 1kg, hydroxyethyl ether cellulose 2kg, are sufficiently mixed in blender；
S2: it takes the water of normal consistency amount to be added in blender, stirs 2min slowly, then stir 2min fastly, obtain required lightweight
Gypsum mortar；
S3: light gypsum mortar obtained in step S2 is quickly packed into the sand die trial of cement triple glue, is conserved at room temperature
For 24 hours, then batten for 24 hours, then is put into electronic air dry oven 42 DEG C drying to constant weight by demoulding maintenance；
S4: taking out batten, upper machine pressure testing after being cooled to room temperature.
Embodiment 2: the preparation of lightweight scratch coat gypsum mortar, comprising the following steps:
S1: it is micro- that desulfurized gypsum 477kg, second class powered coal ash 470kg, artificial mechanism fine sand 12kg, closed pore vitreous are quantitatively weighed
Pearl 180kg, polyvinyl alcohol 1kg, rotten albumen retarder 2kg, hydroxyethyl ether cellulose 2kg, are sufficiently mixed in blender
It closes；
S2: it takes the water of normal consistency amount to be added in blender, stirs 2min slowly, then stir 2min fastly, obtain required lightweight
Gypsum mortar；
S3: light gypsum mortar obtained in step S2 is quickly packed into the sand die trial of cement triple glue, is conserved at room temperature
For 24 hours, then batten for 24 hours, then is put into electronic air dry oven 42 DEG C drying to constant weight by demoulding maintenance；
S4: taking out batten, upper machine pressure testing after being cooled to room temperature.
Embodiment 3: the preparation of lightweight scratch coat gypsum mortar, comprising the following steps:
S1: desulfurized gypsum 477kg, second class powered coal ash 332kg, artificial mechanism fine sand 8kg, closed pore glass bead are quantitatively weighed
180kg, polyvinyl alcohol 1kg, rotten albumen retarder 1kg, hydroxyethyl ether cellulose 2kg, are sufficiently mixed in blender；
S2: it takes the water of normal consistency amount to be added in blender, stirs 2min slowly, then stir 2min fastly, obtain required lightweight
Gypsum mortar；
S3: light gypsum mortar obtained in step S2 is quickly packed into the sand die trial of cement triple glue, is conserved at room temperature
For 24 hours, then batten for 24 hours, then is put into electronic air dry oven 42 DEG C drying to constant weight by demoulding maintenance；
S4: taking out batten, upper machine pressure testing after being cooled to room temperature.
Embodiment 4: the preparation of lightweight scratch coat gypsum mortar, comprising the following steps:
S1: desulfurized gypsum 477kg, second class powered coal ash 470kg, artificial mechanism fine sand 8kg, closed pore glass bead are quantitatively weighed
40kg, polyvinyl alcohol 2kg, rotten albumen retarder 1kg, hydroxyethyl ether cellulose 2kg, are sufficiently mixed in blender；
S2: it takes the water of normal consistency amount to be added in blender, stirs 2min slowly, then stir 2min fastly, obtain required lightweight
Gypsum mortar；
S3: light gypsum mortar obtained in step S2 is quickly packed into the sand die trial of cement triple glue, is conserved at room temperature
For 24 hours, then batten for 24 hours, then is put into electronic air dry oven 42 DEG C drying to constant weight by demoulding maintenance；
S4: taking out batten, upper machine pressure testing after being cooled to room temperature.
Embodiment 5: the preparation of lightweight scratch coat gypsum mortar, comprising the following steps:
S1: desulfurized gypsum 477kg, second class powered coal ash 397kg, artificial mechanism fine sand 8kg, closed pore glass bead are quantitatively weighed
110kg, polyvinyl alcohol 1kg, rotten albumen retarder 1kg, hydroxyethyl ether cellulose 2kg, are sufficiently mixed in blender；
S2: it takes the water of normal consistency amount to be added in blender, stirs 2min slowly, then stir 2min fastly, obtain required lightweight
Gypsum mortar；
S3: light gypsum mortar obtained in step S2 is quickly packed into the sand die trial of cement triple glue, is conserved at room temperature
For 24 hours, then batten for 24 hours, then is put into electronic air dry oven 42 DEG C drying to constant weight by demoulding maintenance；
S4: taking out batten, upper machine pressure testing after being cooled to room temperature.
Test method: referring to National Standard of the People's Republic of China, GB/T 28627-2012 is wanted in " plastering gupsum "
It asks, the project of predominantly detecting includes final setting time, bulk density, flexural strength, compression strength, adhesion strength, bulk density.
Test result: referring to table 1.
Table 1: lightweight scratch coat gypsum mortar performance indicator
According to test data, the results showed that all data index of novel light scratch coat gypsum mortar performance is obvious
Better than standard GB/T/T 28627-2012.Especially critical data, i.e., flexural strength exceeds 60% in mechanical property, resistance to compression
Intensity exceeds 136%.Bulk density significantly reduces.
A kind of lightweight scratch coat gypsum mortar of the invention can be by the desulfurized gypsum generated in thermal power generation, flyash
Equal wastes carry out comprehensive cyclic utilization, replace natural sand to carry out using and product intensity is completely full artificial mechanism fine sand
Sufficient technical requirements, light-weight, bonding force is big, be not pulverized easily, do not crack, not hollowing, do not lose powder, it is more more environmentally friendly than cement, effectively solve
Environmental pollution and the solid waste of having determined increase ecological environmental protection, economic benefit, reduce production cost and have using two hang-ups
Positive effect.
Only preferred embodiments of the present invention will be described for above-mentioned specific embodiment, and not to guarantor of the invention
Shield range is defined.Under the premise of not departing from design concept of the present invention and scope, those skilled in the art
Provided verbal description various modifications to made by technical solution of the present invention, substitution and improvement according to the present invention, should all
Belong to protection category of the invention.Protection scope of the present invention is determined by claim.
Claims (9)
1. a kind of lightweight scratch coat gypsum mortar, which is characterized in that the component including following weight point:
2. a kind of lightweight scratch coat gypsum mortar as described in claim 1, which is characterized in that the desulfurized gypsum is using high
Whiteness desulfurized gypsum, purity >=85% of the desulfurized gypsum.
3. a kind of lightweight scratch coat gypsum mortar as described in claim 1, which is characterized in that the flyash uses second level
Flyash, fineness modulus≤30% of the flyash.
4. a kind of lightweight scratch coat gypsum mortar as described in claim 1, which is characterized in that the artificial mechanism fine sand packet
Broken building stones, building waste residue, landing ash or tailing are included, the partial size of the artificial mechanism fine sand is 0.25mm~0.35mm.
5. a kind of lightweight scratch coat gypsum mortar as described in claim 1, which is characterized in that the closed pore glass bead is
Surface vitreous closing, the balling ratio of the closed pore glass bead are 80~95%, and the bulk density of the closed pore glass bead is 150g/
L~180g/L.
6. a kind of lightweight scratch coat gypsum mortar as described in claim 1, which is characterized in that the retarder is using rotten
Albumen high-efficient retarder.
7. a kind of lightweight scratch coat gypsum mortar as described in claim 1, which is characterized in that the rubber powder uses polyethylene
Alcohol.
8. a kind of lightweight scratch coat gypsum mortar as described in claim 1, which is characterized in that the water-retaining agent uses hydroxyl second
Base cellulose ether, the viscosity of the water-retaining agent are 40000~60000cp.
9. a kind of preparation method of the lightweight scratch coat gypsum mortar as described in claim 1~8 Arbitrary Term, which is characterized in that
Include the following steps:
S1: quantitatively weighing desulfurized gypsum, flyash, artificial mechanism fine sand, closed pore glass bead, rubber powder, retarder, water-retaining agent,
It is sufficiently mixed in blender；
S2: it takes the water of normal consistency amount to be added in blender, stirs 2min slowly, then stir 2min fastly, obtain required light gypsum
Mortar；
S3: light gypsum mortar obtained in step S2 is quickly packed into the sand die trial of cement triple glue, is conserved at room temperature for 24 hours, so
Batten for 24 hours, then is put into electronic air dry oven 42 DEG C drying to constant weight by demoulding maintenance afterwards；
S4: taking out batten, upper machine pressure testing after being cooled to room temperature.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111268983A (en) * | 2019-12-02 | 2020-06-12 | 江苏吉邦材料科技有限公司 | Application of closed-cell vitrified micro bubbles and light gypsum mortar using same and easy to detect bubble hollowing |
| CN112778021A (en) * | 2021-03-26 | 2021-05-11 | 浙江忠信新型建材股份有限公司 | Porous light plastering gypsum and using method thereof |
| CN113582651A (en) * | 2021-08-13 | 2021-11-02 | 江苏蓝圈新材料股份有限公司 | Light plastering gypsum mortar with strong bonding force and preparation method thereof |
| CN114477934A (en) * | 2020-10-23 | 2022-05-13 | 湖南和贵砂浆技术有限公司 | Bi-component gypsum-based plastering mortar and preparation method thereof |
| CN115432983A (en) * | 2022-08-30 | 2022-12-06 | 山东中岩重科新材料科技有限公司 | Lightweight plastering gypsum and application thereof |
| CN115947584A (en) * | 2022-11-03 | 2023-04-11 | 攀钢冶金材料有限责任公司 | Light composite plastering titanium white gypsum mortar material and preparation method thereof |
| CN116462476A (en) * | 2023-04-06 | 2023-07-21 | 石河子大学 | Calcination-free dihydrate gypsum-based waterproof and anti-cracking plastering mortar |
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| CN109020437A (en) * | 2018-08-27 | 2018-12-18 | 倍福德新型建材（江苏）有限公司 | A kind of new and effective spraying glass bead lightweight plastering gupsum mortar |
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| EP1740514A1 (en) * | 2004-04-27 | 2007-01-10 | Hercules Incorporated | Gypsum-based mortars using water retention agents prepared from raw cotton linters |
| CN101691292A (en) * | 2009-09-30 | 2010-04-07 | 谢日清 | Lightweight wall plaster |
| CN105130354A (en) * | 2015-07-13 | 2015-12-09 | 美巢集团股份公司 | Plastering gypsum and preparation method thereof |
| CN105130355A (en) * | 2015-07-19 | 2015-12-09 | 北京工业大学 | Mechanical-spraying light-weight base layer plastering gypsum and preparation method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111268983A (en) * | 2019-12-02 | 2020-06-12 | 江苏吉邦材料科技有限公司 | Application of closed-cell vitrified micro bubbles and light gypsum mortar using same and easy to detect bubble hollowing |
| CN114477934A (en) * | 2020-10-23 | 2022-05-13 | 湖南和贵砂浆技术有限公司 | Bi-component gypsum-based plastering mortar and preparation method thereof |
| CN112778021A (en) * | 2021-03-26 | 2021-05-11 | 浙江忠信新型建材股份有限公司 | Porous light plastering gypsum and using method thereof |
| CN113582651A (en) * | 2021-08-13 | 2021-11-02 | 江苏蓝圈新材料股份有限公司 | Light plastering gypsum mortar with strong bonding force and preparation method thereof |
| CN115432983A (en) * | 2022-08-30 | 2022-12-06 | 山东中岩重科新材料科技有限公司 | Lightweight plastering gypsum and application thereof |
| CN115947584A (en) * | 2022-11-03 | 2023-04-11 | 攀钢冶金材料有限责任公司 | Light composite plastering titanium white gypsum mortar material and preparation method thereof |
| CN116462476A (en) * | 2023-04-06 | 2023-07-21 | 石河子大学 | Calcination-free dihydrate gypsum-based waterproof and anti-cracking plastering mortar |
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