CN103601454A - Preparation method of light-weight thermal mortar - Google Patents
Preparation method of light-weight thermal mortar Download PDFInfo
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- CN103601454A CN103601454A CN201310591579.9A CN201310591579A CN103601454A CN 103601454 A CN103601454 A CN 103601454A CN 201310591579 A CN201310591579 A CN 201310591579A CN 103601454 A CN103601454 A CN 103601454A
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Abstract
The invention relates to a preparation method of light-weight thermal mortar. The preparation method is characterized by taking sulphoaluminate cement as a binding material and modified polyphenyl particles and glass beads as a heat preservation aggregate, and adding a water reducing agent, an air-entraining agent, cellulose ether, emulsified asphalt and fibres to prepare the light-weight thermal mortar. The preparation method has the characteristics that the sulphoaluminate cement with quick early strength development is taken as the binding material, the heat preservation aggregate (comprising original polyphenyl particles, regenerative polyphenyl particles and the glass beads) is modified to improve the bonding property of the heat preservation aggregate and the binding material, and thus production conditions of the light-weight thermal mortar are created; the proper matching ratio of the heat preservation aggregate which is closely stacked is obtained through grain composition, an idea of wrapping with minimum cement is introduced, the optimal heat preservation aggregate matching ratio is obtained through experiments, and thus the dosage of cement is lowered; minim air holes are formed in the binding material by the air-entraining agent, and the density of the thermal mortar is further reduced. Through the technology, the thermal mortar produced by the preparation method is light in weight, and a mechanical property and a heat-insulating property of the thermal mortar can meet engineering requirements.
Description
Technical field
The present invention relates to building material field, particularly relate to a kind of preparation method of light heat-insulation mortar.
Background technology
Buildings heat-insulation and heat-preservation is save energy, improve living environment and use an importance of function, and it is one of the most most scientific energy-saving manner that buildings adopts External Walls Heating Insulation.
Current external-wall heat-insulation material comprises organic insulation material (extruded sheet, styrofoam, urethane etc.) and inorganic heat insulation material (rock cotton board, inorganic heat insulation mortar etc.).Organic insulation material weather resistance, fire line are poor, and the toxic gas that at high temperature can volatilize having, brings potential safety hazard; And inorganic heat insulation material water-intake rate is high, heat-insulating property is slightly poor, and density is bigger than normal; Therefore, the development of the compound lagging material of cement based organic-inorganic has caused concern widely.Concrete-based polyphenylene granule heat-insulating material combines the mechanical property advantage of cement and the heat-insulating property advantage of macromolecular material, then is equipped with the admixtures such as air entrapment agent, water-holding agent, and over-all properties is particularly outstanding, and application prospect is boundless.
Current concrete-based polyphenylene granule heat-insulating material is on the market all that heat preserving aggregate is added in gelling material and stirred, and in grain composition, does not carry out the distribution research of science; The viscosifying power of organic EPS heat preserving aggregate and gelling material is poor simultaneously, causes the mechanical property of lagging material and heat-insulating property poor; Frangible in inorganic vitrified micro-bead heat preserving aggregate whipping process, cause water-intake rate excessive, thereby increased the density of lagging material, and affect its mechanical property and heat-insulating property.
Current cement based lagging material density is on the market bigger than normal, and thermal conductivity is high, poor mechanical property.
The gelling material that concrete-based polyphenylene granule heat-insulating material is used is mainly ordinary Portland cement.The time of coagulation of ordinary Portland cement is long, the easy layering of particle in lagging material preparation process, and the product later stage easily there is dry shrinkage and cracking phenomenon, have a strong impact on mechanics and the heat-insulating property of lagging material.
Summary of the invention
The technical problem that the present invention mainly solves is to improve a kind of preparation method of light heat-insulation mortar, adopt early strength to develop fast aluminosulfate cement as gelling material, and modification heat preserving aggregate (former granular polystyrene, reclaimed grain and glass bead), strengthen the adhesive property of itself and gelling material, for obtaining light heat-insulation mortar, provide condition; By grain composition, obtain the appropriate proportioning of heat preserving aggregate when tightly packed, based on this, introduce the thought of " minimum cement consumption parcel ", experiment obtains optimum heat preserving aggregate proportioning, reduces the consumption of cement; And utilize air entrapment agent in gelling material, to produce small pore, further reduce the density of thermal insulation mortar.
For achieving the above object, the technical solution used in the present invention:
1. granular polystyrene surface is slightly rubbed, then spray polymers soln.Equally, at glass bead surface sprinkling organosilicon moisture repellent solution or emulsified bitumen;
2. utilize stage filling theory and particle interference theory to carry out grain composition to three kinds of heat preserving aggregates (former granular polystyrene, reclaimed grain and glass bead).Choose the continuous distribution particle size range 3-7mm of granular polystyrene, glass bead continuous distribution particle size range 0.15-0.8mm; By the apparent density of heat preserving aggregate, utilize particle interference theory to obtain the theoretical ratio of organic heat-insulating aggregate and inorganic heat preserving aggregate again; At this ratio, around carrying out experimental study obtains appropriate proportioning again;
3. " minimum cement consumption parcel " thought,, when guaranteeing that slurry reaches identical denseness, wraps up heat preserving aggregate to determine optimum heat preserving aggregate proportioning with minimum inorganic coagulation material, and reduces the density of warming plate;
4. the preparation method of light heat-insulation mortar, comprises the following steps: aluminosulfate cement, ether of cellulose, air entrapment agent and fiber are poured in stirrer, stirred, then add the water that mixes water reducer, and emulsified bitumen stirring obtains slurry; Again heat preserving aggregate is poured in above-mentioned slurry, stirred and make slurry; Above-mentioned slurry is injected to die for molding, maintenance under normal temperature, the demoulding after hardened forming;
5. advantage of the present invention is:
(1) adhesive property of the heat preserving aggregate after modification of the present invention and gelling material is better, and modified vitrification micro-bead water-intake rate reduces greatly, reduce the water cement ratio of heat preservation slurry, and further improved mechanical property and the heat-insulating property of lagging material, for obtaining light heat-insulation mortar, provide condition;
(2) by grain composition research, obtain on the basis of the best proportioning of two kinds of heat preserving aggregates, introduce the thought of " minimum cement consumption parcel ", obtain optimum heat preserving aggregate proportioning, to guarantee the consumption of minimum cement, utilize air entrapment agent in gelling material, to produce the density that small pore further reduces thermal insulation mortar simultaneously.By above technology, the present invention has obtained that quality is light, the thermal insulation mortar of mechanical property and heat-insulating property engineering demands;
(3) the present invention utilizes air entrapment agent in gelling material, to produce small pore, further reduces the density of thermal insulation mortar;
(4) the present invention adopts aluminosulfate cement aquation to have microdilatancy characteristic, can compensate the later stage drying shrinkage of cement base products, easily obtains the lagging material of stable performance.
Embodiment
Embodiment 1
1. raw material preparation:
Granular polystyrene surface is slightly rubbed, and then spray concentration is 20% polymers soln.At glass bead surface sprinkling 3% organosilicon moisture repellent solution.Cement is aluminosulfate cement.
2. utilize stage filling theory and particle interference theory to carry out grain composition to three kinds of heat preserving aggregates (former granular polystyrene, reclaimed grain and glass bead).Choose the continuous distribution particle size range 3-7mm of granular polystyrene, glass bead continuous distribution particle size range 0.15-0.8mm; By the apparent density of heat preserving aggregate, utilize particle interference theory to obtain the theoretical ratio of organic heat-insulating aggregate and inorganic heat preserving aggregate again; At this ratio, around carrying out experimental study obtains optimal proportion again: former granular polystyrene: reclaimed grain: glass bead is 4.0:0.8:5.2.
3. " minimum cement consumption parcel " thought; when guaranteeing that slurry reaches identical denseness; with minimum inorganic coagulation material, wrap up heat preserving aggregate; obtain optimum heat preserving aggregate proportioning: former granular polystyrene: reclaimed grain: glass bead is 4.2:0.7:5.1, reduce the density of thermal insulation mortar.
4. the preparation method of light heat-insulation mortar, comprises the following steps: aluminosulfate cement, ether of cellulose, air entrapment agent and fiber are poured in stirrer, stirred, then add the water that mixes water reducer, and emulsified bitumen stirring obtains slurry; Again heat preserving aggregate is poured in above-mentioned slurry, stirred and make slurry; Above-mentioned slurry is injected to die for molding, maintenance under normal temperature, the demoulding after hardened forming.
Embodiment 2
1. raw material preparation:
Granular polystyrene surface is slightly rubbed, and then spray concentration is 15% polymers soln.At glass bead surface sprinkling 4% organosilicon moisture repellent solution.Cement is aluminosulfate cement.
2. utilize stage filling theory and particle interference theory to carry out grain composition to three kinds of heat preserving aggregates (former granular polystyrene, reclaimed grain and glass bead).Choose the continuous distribution particle size range 3-7mm of granular polystyrene, glass bead continuous distribution particle size range 0.15-0.8mm; By the apparent density of heat preserving aggregate, utilize particle interference theory to obtain the theoretical ratio of organic heat-insulating aggregate and inorganic heat preserving aggregate again; At this ratio, around carrying out experimental study obtains optimal proportion again: former granular polystyrene: reclaimed grain: glass bead is 2.0:0.2:7.8.
3. " minimum cement consumption parcel " thought; when guaranteeing that slurry reaches identical denseness; with minimum inorganic coagulation material, wrap up heat preserving aggregate; obtain optimum heat preserving aggregate proportioning: former granular polystyrene: reclaimed grain: glass bead is 2.2:0.2:7.6, reduce the density of thermal insulation mortar.
4. the preparation method of light heat-insulation mortar, comprises the following steps:
Aluminosulfate cement, ether of cellulose, air entrapment agent and fiber are poured in stirrer, stirred, then add the water that mixes water reducer, and emulsified bitumen stirring obtains slurry; Again heat preserving aggregate is poured in above-mentioned slurry, stirred and make slurry; Above-mentioned slurry is injected to die for molding, maintenance under normal temperature, the demoulding after hardened forming.
Embodiment 3
1. raw material preparation:
Granular polystyrene surface is slightly rubbed, and then spray concentration is 15% polymers soln.At glass bead surface sprinkling emulsified bitumen.Cement is aluminosulfate cement.
2. utilize stage filling theory and particle interference theory to carry out grain composition to three kinds of heat preserving aggregates (former granular polystyrene, reclaimed grain and glass bead).Choose the continuous distribution particle size range 3-7mm of granular polystyrene, glass bead continuous distribution particle size range 0.15-0.8mm; By the apparent density of heat preserving aggregate, utilize particle interference theory to obtain the theoretical ratio of organic heat-insulating aggregate and inorganic heat preserving aggregate again; At this ratio, around carrying out experimental study obtains optimal proportion again: former granular polystyrene: reclaimed grain: glass bead is 2.8:0.5:6.7.
3. " minimum cement consumption parcel " thought; when guaranteeing that slurry reaches identical denseness; with minimum inorganic coagulation material, wrap up heat preserving aggregate; obtain optimum heat preserving aggregate proportioning: former granular polystyrene: reclaimed grain: glass bead is 2.8:0.4:6.8, reduce the density of thermal insulation mortar.
4. the preparation method of light heat-insulation mortar, comprises the following steps:
Aluminosulfate cement, ether of cellulose, air entrapment agent and fiber are poured in stirrer, stirred, then add the water that mixes water reducer, and emulsified bitumen stirring obtains slurry; Again heat preserving aggregate is poured in above-mentioned slurry, stirred and make slurry; Above-mentioned slurry is injected to die for molding, maintenance under normal temperature, the demoulding after hardened forming.
Table 1 is mechanical property and the heat-insulating property of utilizing light heat-insulation mortar under Different Preparation condition of the present invention.
subordinate list
The performance of table 1. light heat-insulation mortar
Claims (6)
1. a light heat-insulation mortar, it is characterized in that: adopt the aluminosulfate cement of high-early-strength as gelling material, and modification heat preserving aggregate (former granular polystyrene, reclaimed grain and glass bead), strengthen the adhesive property of itself and gelling material, for obtaining light heat-insulation mortar, provide condition; By grain composition, obtain the appropriate proportioning of heat preserving aggregate when tightly packed, based on this, introduce the thought of " minimum cement consumption parcel ", experiment obtains optimum heat preserving aggregate proportioning, reduces the consumption of cement; And utilize air entrapment agent in gelling material, to produce small pore, further reduce the density of thermal insulation mortar.
2. light heat-insulation mortar according to claim 1, is characterized in that, described granular polystyrene is former granular polystyrene of flame retardant type and flame retardant type reclaimed grain, and its particle diameter is at 3-7mm; Described glass bead particle diameter is 0.15-0.8mm; Described air entrapment agent is sodium laurylsulfonate; Described fiber is one or more in trevira or polypropylene fibre; Described water reducer is efficient polycarboxylate water-reducer; Described ether of cellulose is hydroxypropyl methyl cellulose ether; Described emulsified bitumen is common emulsified asphalt or modified emulsifying asphalt.
3. flame retardant type granular polystyrene according to claim 2 is modified flame-retardant type granular polystyrene; its modified technique is for first slightly rubbing granular polystyrene surface; then spraying ethylene-vinyl acetate copolymer solution can (herein can according to the add-on of polymer emulsion concentration adjustment water); described glass bead is the glass bead after modification, and its modified technique is to spray organosilicon moisture repellent or emulsified bitumen (herein can according to the add-on of organosilicon moisture repellent concentration adjustment water) at glass bead surface uniform.
4. grain composition research according to claim 1, is characterized in that, utilizes stage filling theory and particle interference theory to carry out grain composition to heat preserving aggregate (former granular polystyrene, reclaimed grain and glass bead).
5. " minimum cement consumption parcel " according to claim 1 thought, is characterized in that, when guaranteeing that slurry reaches identical denseness, with minimum inorganic coagulation material, wraps up heat preserving aggregate to reduce the density of warming plate.
6. the preparation method of light heat-insulation mortar according to claim 1, it is characterized in that, comprise the following steps: aluminosulfate cement, ether of cellulose, air entrapment agent and fiber are poured in stirrer, stirred, add again the water that mixes water reducer, and emulsified bitumen stirring obtains slurry; Again heat preserving aggregate is poured in above-mentioned slurry, stirred and make slurry; Above-mentioned slurry is injected to die for molding, maintenance under normal temperature, the demoulding after hardened forming.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979862A (en) * | 2014-04-15 | 2014-08-13 | 吴春池 | Energy-saving and environmental-protection material, preparation method and application of energy-saving and environmental-protection material in building system |
| CN105060824A (en) * | 2015-08-06 | 2015-11-18 | 济南大学 | Thermal insulation mortar containing papermaking sludge ash and preparation method thereof |
| CN105060826A (en) * | 2015-08-11 | 2015-11-18 | 刘广利 | Thermal insulation mortar for building external walls and preparation method thereof |
| CN107216093A (en) * | 2017-06-20 | 2017-09-29 | 武汉理工大学 | A kind of interface enhancing lightweight concrete and preparation method thereof |
| CN107673708A (en) * | 2017-10-27 | 2018-02-09 | 济南大学 | It is a kind of to use thermal insulation mortar of modification infusorial earth and preparation method thereof |
| CN108793841A (en) * | 2018-06-12 | 2018-11-13 | 佛山市华强协兴陶瓷有限公司 | A kind of heat preservation mortar for outer wall and its production method |
| CN111517715A (en) * | 2020-04-15 | 2020-08-11 | 济南大学 | 3D printing thermal insulation mortar and preparation method and application thereof |
| CN115093166A (en) * | 2022-05-18 | 2022-09-23 | 龙南泰盛建材有限公司 | Recycled asphalt concrete |
| CN116477911A (en) * | 2023-04-21 | 2023-07-25 | 青岛理工大学 | Preparation method and application of inorganic/organic composite A-level heat-insulating board |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103979862A (en) * | 2014-04-15 | 2014-08-13 | 吴春池 | Energy-saving and environmental-protection material, preparation method and application of energy-saving and environmental-protection material in building system |
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| CN105060824A (en) * | 2015-08-06 | 2015-11-18 | 济南大学 | Thermal insulation mortar containing papermaking sludge ash and preparation method thereof |
| CN105060826A (en) * | 2015-08-11 | 2015-11-18 | 刘广利 | Thermal insulation mortar for building external walls and preparation method thereof |
| CN105060826B (en) * | 2015-08-11 | 2017-01-25 | 东莞市泰丰钢结构有限公司 | Thermal insulation mortar for building external walls and preparation method thereof |
| CN107216093A (en) * | 2017-06-20 | 2017-09-29 | 武汉理工大学 | A kind of interface enhancing lightweight concrete and preparation method thereof |
| CN107673708A (en) * | 2017-10-27 | 2018-02-09 | 济南大学 | It is a kind of to use thermal insulation mortar of modification infusorial earth and preparation method thereof |
| CN108793841A (en) * | 2018-06-12 | 2018-11-13 | 佛山市华强协兴陶瓷有限公司 | A kind of heat preservation mortar for outer wall and its production method |
| CN111517715A (en) * | 2020-04-15 | 2020-08-11 | 济南大学 | 3D printing thermal insulation mortar and preparation method and application thereof |
| CN115093166A (en) * | 2022-05-18 | 2022-09-23 | 龙南泰盛建材有限公司 | Recycled asphalt concrete |
| CN116477911A (en) * | 2023-04-21 | 2023-07-25 | 青岛理工大学 | Preparation method and application of inorganic/organic composite A-level heat-insulating board |
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Application publication date: 20140226 |