CN110683820A - Mortar for prefabricated house exhaust passage - Google Patents
Mortar for prefabricated house exhaust passage Download PDFInfo
- Publication number
- CN110683820A CN110683820A CN201911044008.7A CN201911044008A CN110683820A CN 110683820 A CN110683820 A CN 110683820A CN 201911044008 A CN201911044008 A CN 201911044008A CN 110683820 A CN110683820 A CN 110683820A
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- CN
- China
- Prior art keywords
- exhaust duct
- mortar
- parts
- prefabricated
- cellulose ether
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
-
- 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
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
-
- 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
Abstract
The invention relates to prefabricated house exhaust duct mortar, which is prepared by mixing the following materials in parts by weight: gypsum: 80-95 parts of cement: 5-20 parts of sand: 90-110 parts of water reducing agent: 0.2-4.0 parts of defoaming agent: 0.03-0.10 part of early strength agent: 0.05-0.20 parts of retarder: 0.05-0.30 part of viscosity regulator: 0.01-0.20 part of mixing water: 30-50 parts; the final setting time of the prepared exhaust duct mortar is 15-40min, the compressive strength is 10-20MPa, the setting time is short, the strength is high, the turnover speed of a mold is high, and the production efficiency is high.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to prefabricated house exhaust duct mortar.
Background
The house smoke exhaust air passage is used as an important component of a house toilet and a kitchen, is an important passage for ensuring the smooth emission of smoke, oil and water vapor of a house kitchen and a toilet, and plays an extremely important role in improving the indoor air quality and the living environment, and ensuring the house engineering quality and the fire safety. Driven by the residential market, the demand of the exhaust passage is very large.
The manufacturing process of the exhaust passage mainly comprises a manual plastering process, a simple mechanical vibration forming process and a flow line production process. The manual plastering process is relatively laggard, the product quality is unstable, the production efficiency is low, and the productivity cannot meet the market demand and is gradually eliminated; the simple mechanical vibration forming process is once popular, and the production efficiency is greatly improved compared with the traditional plastering process, the investment is low, the simple mechanical vibration forming process is well received by flue manufacturers, and the process still occupies the largest market share at present; the flow line production process is gradually developed in recent years, and has the advantages that the produced flue has stable quality and high production efficiency, and the defect of large investment is caused.
For the simple mechanical vibration forming process and the flow line production process, the key problem is to accelerate the turnover of the die on the premise of ensuring the product quality, so that the sufficient production efficiency is ensured, and the on-time delivery of market orders is met. The core lies in shortening the setting time of prefabricated exhaust passage mortar, promotes the strength development speed of hardening mortar, and then shortens drawing of patterns time, satisfies the demand of accelerating the mould turnover.
Partial progress has been reported in the technical development of prefabricated exhaust duct mortar. Patent CN101993227B discloses an exhaust duct prefabricated by compounding fertilizers and conventional building materials, which realizes resource utilization of waste materials, but the curing steps include standing for 12 hours, heating to 90-100 ℃ within 4 hours, keeping the temperature for 12 hours, then slowly cooling to normal temperature, roughly calculating the curing time to be about 30 hours, and the turnover efficiency of the mold is very low. Patent CN102276220B discloses an exhaust duct reinforced by the introduction of fibers, using portland cement as the main cementitious material. The hydration characteristic of the portland cement determines that the curing time of the portland cement still cannot meet the requirement of quick demoulding. Patent CN105985080A discloses a method for manufacturing a foamed flue, the demoulding time is 12-24 hours. Patent CN107619225A discloses a light mixed mortar for making flue, which also uses cement as main cementing material, and the long demoulding time is the bottleneck that the turnover of the mould is accelerated and the production efficiency is improved.
Disclosure of Invention
The invention aims to solve the technical bottlenecks that the setting time of the mortar for the exhaust passage of the existing prefabricated house is long, the strength development speed is slow, the demolding time is long, and the production efficiency is further influenced, and provides the novel mortar for the exhaust passage of the prefabricated house, which has the advantages of simple formula, easiness in operation, high strength rise speed, high mold turnover efficiency and high production efficiency.
The invention realizes the technical effects through the following technical scheme:
the prefabricated house exhaust duct mortar is characterized in that: the exhaust duct mortar is prepared by mixing the following materials in parts by weight:
gypsum: 80-95 parts;
cement: 5-20 parts of a solvent;
sand: 90-110 parts;
water reducing agent: 0.2-4.0 parts;
defoaming agent: 0.03-0.10 part;
early strength agent: 0.05-0.20 part;
retarder: 0.05-0.30 part;
viscosity modifier: 0.01-0.20 part;
mixing water: 30-50 parts.
Further, the gypsum is one or a mixture of more of desulfurized gypsum, natural gypsum, phosphogypsum, fluorgypsum and titanium gypsum.
Further, the cement is selected from any one or a mixture of more of ordinary portland cement, sulphoaluminate cement and aluminate cement.
Furthermore, the sand is selected from one or a mixture of river sand and machine-made sand.
Further, the water reducing agent is selected from one or a mixture of more of a powdery polycarboxylic acid water reducing agent, powdery lignosulfonate, a powdery naphthalenesulfonate formaldehyde condensate and powdery melamine.
Further, the defoaming agent is any one or a mixture of two of a polyether powdery defoaming agent and an organic silicon powdery defoaming agent.
Furthermore, the early strength agent is selected from one or a mixture of more of nanoscale calcium sulfate, calcium chloride, sodium chloride, aluminum chloride, sodium sulfate, potassium sulfate, calcium nitrate, calcium nitrite, triethanolamine and triisopropanolamine.
Further, the retarder is selected from any one or a mixture of more of sodium gluconate, citric acid, sodium citrate, tartaric acid, acrylic acid, sodium acrylate, sodium hexametaphosphate, sodium polyphosphate and protein retarder.
Further, the viscosity regulator is selected from one or more of methyl cellulose ether, methyl hydroxyethyl cellulose ether, carboxymethyl cellulose ether, hydroxyethyl cellulose ether, hydroxypropyl methyl cellulose ether, carboxymethyl hydroxyethyl cellulose ether and hydroxypropyl methyl cellulose ether.
Furthermore, the final setting time of the prefabricated house exhaust duct mortar is 15-40min, and the compressive strength is 10-20 MPa.
The prefabricated house exhaust duct mortar provided by the invention is prepared into an exhaust duct mortar product with excellent comprehensive performance by adjusting the fluidity and cohesiveness of the mortar through the water reducing agent, the defoaming agent, the early strength agent, the retarder and the viscosity regulator, wherein the early strength agent with a nanoscale is adopted to promote the hydration speed of gypsum so as to accelerate the strength rising speed of an exhaust duct, so that the turnover speed and the production efficiency of a mold can be greatly accelerated.
Detailed Description
The formula composition of the prefabricated house exhaust duct mortar provided by the invention is obtained through a large number of tests and designs. The gypsum and the cement as the cementing materials and the sand as the aggregate can provide guarantee for the strength of the hardened exhaust passage, the water reducing agent provides a dispersing effect for the mortar, the defoaming agent provides guarantee for the dispersibility and the strength of the mortar by adjusting the air content of the mortar, the early strength agent is used for improving the strength of the exhaust passage, the retarder is used for adjusting the setting time of the mortar so as to obtain proper operation time, and the viscosity adjusting agent is used for providing a proper mortar state. The present invention is further illustrated below with reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Various equivalent modifications of the invention, which fall within the scope of the appended claims of this application, will occur to persons skilled in the art.
The kinds and the qualities of the materials selected in the examples and the comparative examples are shown in the table below, and the setting time and the compressive strength (Mpa) within 2 hours of the obtained finished product are tested to obtain the experimental data of the exhaust duct mortar shown in the table 1.
TABLE 1 Experimental data for exhaust duct mortar
As can be seen from the data in Table 1, the mortar prepared in the examples 1 to 10 has the setting time within the range of 15 to 40min and the 2-hour compressive strength within the range of 10 to 20MPa, can meet the demolding requirement, and has short demolding time and high production efficiency.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The prefabricated house exhaust duct mortar is characterized in that: the exhaust duct mortar is prepared by mixing the following materials in parts by weight:
gypsum: 80-95 parts;
cement: 5-20 parts of a solvent;
sand: 90-110 parts;
water reducing agent: 0.2-4.0 parts;
defoaming agent: 0.03-0.10 part;
early strength agent: 0.05-0.20 part;
retarder: 0.05-0.30 part;
viscosity modifier: 0.01-0.20 part;
mixing water: 30-50 parts.
2. The prefabricated residential exhaust duct mortar of claim 1, wherein: the gypsum is one or more of desulfurized gypsum, natural gypsum, phosphogypsum, fluorgypsum and titanium gypsum.
3. The prefabricated residential exhaust duct mortar of claim 1, wherein: the cement is selected from any one or mixture of more of ordinary portland cement, sulphoaluminate cement and aluminate cement.
4. The prefabricated residential exhaust duct mortar of claim 1, wherein: the sand is selected from one or a mixture of river sand and machine-made sand.
5. The prefabricated residential exhaust duct mortar of claim 1, wherein: the water reducing agent is selected from one or a mixture of more of powdery polycarboxylic acid water reducing agent, powdery lignosulfonate, powdery naphthalenesulfonate formaldehyde condensate and powdery melamine.
6. The prefabricated residential exhaust duct mortar of claim 1, wherein: the defoaming agent is any one or a mixture of two of a polyether powdery defoaming agent and an organic silicon powdery defoaming agent.
7. The prefabricated residential exhaust duct mortar of claim 1, wherein: the early strength agent is selected from one or a mixture of more of nanoscale calcium sulfate, calcium chloride, sodium chloride, aluminum chloride, sodium sulfate, potassium sulfate, calcium nitrate, calcium nitrite, triethanolamine and triisopropanolamine.
8. The prefabricated residential exhaust duct mortar of claim 1, wherein: the retarder is any one or mixture of more of sodium gluconate, citric acid, sodium citrate, tartaric acid, acrylic acid, sodium acrylate, sodium hexametaphosphate, sodium polyphosphate and protein retarder.
9. The prefabricated residential exhaust duct mortar of claim 1, wherein: the viscosity regulator is selected from one or more of methyl cellulose ether, methyl hydroxyethyl cellulose ether, carboxymethyl cellulose ether, hydroxyethyl cellulose ether, hydroxypropyl methyl cellulose ether, carboxymethyl hydroxyethyl cellulose ether, and hydroxypropyl methyl cellulose ether.
10. The prefabricated residential exhaust duct mortar of claim 1, wherein: the final setting time of the prefabricated house exhaust duct mortar is 15-40min, and the compressive strength is 10-20 Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911044008.7A CN110683820A (en) | 2019-10-30 | 2019-10-30 | Mortar for prefabricated house exhaust passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911044008.7A CN110683820A (en) | 2019-10-30 | 2019-10-30 | Mortar for prefabricated house exhaust passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110683820A true CN110683820A (en) | 2020-01-14 |
Family
ID=69114810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911044008.7A Pending CN110683820A (en) | 2019-10-30 | 2019-10-30 | Mortar for prefabricated house exhaust passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110683820A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114249574A (en) * | 2021-12-10 | 2022-03-29 | 河南强耐新材股份有限公司 | Novel gypsum-based exhaust passage product and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070163471A1 (en) * | 2004-02-12 | 2007-07-19 | Umberto Costa | Use of new fast-setting mortars for preparing products by means of pouring in foundry earth moulds |
| CN201209312Y (en) * | 2008-05-26 | 2009-03-18 | 姚明起 | Standard member for flue gas chimney pipe |
| CN101555106A (en) * | 2009-04-03 | 2009-10-14 | 汕头经济特区龙湖科技有限公司 | Composite cementitious material and ground self-leveling mortar using same |
| CN102173707A (en) * | 2011-01-31 | 2011-09-07 | 上海市建筑科学研究院(集团)有限公司 | Desulfurization alpha semi-hydrated gypsum self-leveling mortar |
| CN102838337A (en) * | 2012-09-04 | 2012-12-26 | 同济大学 | Desulfurized gypsum based functional mortar for coating and preparation method thereof |
-
2019
- 2019-10-30 CN CN201911044008.7A patent/CN110683820A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070163471A1 (en) * | 2004-02-12 | 2007-07-19 | Umberto Costa | Use of new fast-setting mortars for preparing products by means of pouring in foundry earth moulds |
| CN201209312Y (en) * | 2008-05-26 | 2009-03-18 | 姚明起 | Standard member for flue gas chimney pipe |
| CN101555106A (en) * | 2009-04-03 | 2009-10-14 | 汕头经济特区龙湖科技有限公司 | Composite cementitious material and ground self-leveling mortar using same |
| CN102173707A (en) * | 2011-01-31 | 2011-09-07 | 上海市建筑科学研究院(集团)有限公司 | Desulfurization alpha semi-hydrated gypsum self-leveling mortar |
| CN102838337A (en) * | 2012-09-04 | 2012-12-26 | 同济大学 | Desulfurized gypsum based functional mortar for coating and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 国家建筑材料测试中心组编: "《预拌砂浆实用检测技术》", 30 November 2007, 中国计量出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114249574A (en) * | 2021-12-10 | 2022-03-29 | 河南强耐新材股份有限公司 | Novel gypsum-based exhaust passage product and preparation method thereof |
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Application publication date: 20200114 |
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