CN103664115A - Special thermal insulation masonry mortar powder for lightweight block and production method thereof - Google Patents
Special thermal insulation masonry mortar powder for lightweight block and production method thereof Download PDFInfo
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- CN103664115A CN103664115A CN201210325175.0A CN201210325175A CN103664115A CN 103664115 A CN103664115 A CN 103664115A CN 201210325175 A CN201210325175 A CN 201210325175A CN 103664115 A CN103664115 A CN 103664115A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to special thermal insulation masonry mortar powder for a lightweight block and a production method thereof. The method comprises the following steps: feeding a granulated blast furnace slag to a drum-type hot air dryer to dry, and then carrying out screening treatment by a vibrating screen; feeding expanded perlite to the drum-type hot air dryer, and spraying sodium methylsiliconate of which the mass concentration is 10% to dry; adding the processed granulated blast furnace slag and hydrophobic expanded perlite to a mixer to evenly premix, and then adding dry coal ash, ordinary portland cement, sodium bentonite and building gypsum plaster to the mixer; then adding evenly mixed hydroxypropyl methyl cellulose and sodium dodecyl benzene sulfonate; and mixing and agitating for 5-10 minutes, so as to discharge and pack. Sand is replaced by the granulated blast furnace slag, microcellular foam is led to reduce the volume-weight of the mortar, the heat-insulating and energy-saving properties are similar to the heat-conducting property of the block material; compared with common masonry mortar, the special thermal insulation masonry mortar powder has better water-retaining property and caking property, and smaller dry shrinkage, and the moisture condensation and cracking phenomena in a block mortar joint caused by normal mortar masonry are removed.
Description
Technical field
The present invention relates to a kind of employing steel mill's blast-furnace slag and moisture proof expansive Pearle and gather materials as light weight sand, thermal-insulating type masonry mortar and production method thereof that the Sodium dodecylbenzene sulfonate of take is air entrapment agent.
Background technology
Masonry mortar is a kind of mortar of consumption maximum in construction work, though direct bearing load plays bonding monolithic masonry, masonry and builds that to join reinforcing bar be an integral body, makes it to have the effect of supporting capacity.Generally, the bearing capacity of masonry is not only decided by performance and the constructional feature of block materials used, also depends on the performance of masonry mortar.Masonry mortar, except meeting the mechanics that transmits load, compatible deformation requires, should meet sealing simultaneously and build seam by laying bricks or stones, prevents the requirement of air water infiltration.In recent years, country is to building energy conservation pay attention to day by day, to thermal technology's property of construction wall, require more and more higher, various energy saving type lightweight building block widespread uses, along with deeply carrying out of Building Energy-saving Work, in construction work, urgently need a kind of heat preservation and energy conservation effects good, there is the masonry mortar of good frost resistance and low drying shrinkage and splitting resistance.For heat-insulating masonry mortar, when should meet above-mentioned common requirement, also require to there is the heat conductivility close with the light block material, to eliminate " cold-heat bridge " of building mortar joint place by laying bricks or stones, improve integral heat insulation heat-proof quality.Thermal conductivity should be controlled at 0.1～0.3W/m.k.For general heat-preserving energy-saving type building block, as the light blocks such as light-weight aggregate cell concrete composite block, air-entrained concrete building block mostly are self-supporting filled-type, strength grade is generally between 2.5～5.0Mpa, and the strength grade of thermal insulation mortar should be take M5 and M7.5 as main.Because heat-preserving energy-saving type light block has porous matrix more, more easily water suction, heat-insulating masonry mortar should have good workability, forefathers' research and engineering practice show: for masonry mortar, cohesive strength is even more important compared with resistance to compression, under equal conditions, water retentivity of mortar is good, and cohesive strength is generally higher.Therefore thermal insulation mortar denseness should be at 70～90mm; Answer≤20mm of delamination degree.The mortar self simultaneously with good durability is survivable, thereby guarantees masonry one-piece construction safety, and this just requires heat-insulating masonry mortar to have good frost resistance and low drying shrinkage and splitting resistance.
Summary of the invention
For construction work, need, object of the present invention is intended to produce a kind of light block special-purpose thermal insulation masonry dry powder mortar is provided for light heat insulation blocks masonry project.The present invention adopts fine-celled foam and the light know-why of the compound system of light skeletal, not only adopted industrial residue to gather materials as light weight sand, and further reduce mortar unit weight by introducing fine-celled foam, obtain better heat insulation effect, realized the optimization of mortar slurry microporous structure simultaneously, significantly improve the workability of mortar, improve the Frost Resistance of mortar.By anti-cracking shrinkage-reducing admixture, water retentivity of mortar is improved, contraction reduces, and cohesiveness and frost resistance improve, and obviously improves workability and the weather resistance of mortar.
Another object of the present invention is to provide a kind of production method of light block special-purpose thermal insulation masonry dry powder mortar.
Object of the present invention can realize by following mortar formula and process of preparing:
A light block special-purpose thermal insulation masonry dry powder mortar, dry-mix is to be made by following raw materials according, its component and content (weight percent) are respectively:
Dry discharge fly ash 5-10%;
Ordinary Portland cement 20-30%;
Plaster of Paris (β half water) 1 ~ 2%;
Blast furnace slag 50-65%;
Hydrophobic expansion pearlite 3-10%;
Sodium bentonite 1-2%;
Vltra tears 0.1 ~ 0.15%;
Sodium dodecylbenzene sulfonate 0.1-0.5%.
Mortar dispensing information:
1, grain slag (blast furnace slag) and hydrophobic expansion pearlite are the light aggregate of thermal insulation mortar, and grain slag consumption relative to hydrophobic expansion pearlite, has determined the tap density of heat-insulating masonry mortar, thereby affect the final performance of mortar.For obtaining the mortar performance in claimed range, blast furnace slag and hydrophobic expansion pearlite volume ratio should fix between 1:1 ~ 3:1, its reason is that blast furnace slag plays skeleton function in mortar, and it is one of principal element affecting heat-insulating masonry mortar performance.Test shows, along with blast furnace slag and hydrophobic expansion pearlite volume ratio increase, the increase of blast furnace slag volume, the ultimate compression strength of mortar first increases, and this is due under isometric(al) condition, in certain scope, increase along with blast furnace slag aggregate, mortar degree of compactness improves, and the increase of mortar ultimate compression strength is fallen the just relative minimizing of density material occupancy without intensity, in fine-celled foam and hydrophobic expansion pearlite etc.; When large until mortar is used blast furnace slag entirely, ultimate compression strength changes little.Improve cement consumption, mortar ultimate compression strength obviously improves, and dry density also obviously increases, and thermal conductivity can not meet the demands.
2, wilkinite is mineral type water-holding agent, conventionally adopts sodium bentonite, has good water-keeping thickening effect.Plaster of Paris, as micro-expanding agent, can reduce Mortar shrinkage, improves setting rate.
3, Vltra tears acts on improving the workability performance of mortar preferably as high-performance water-retaining agent.
4, Sodium dodecylbenzene sulfonate is as mortar air entrapment agent, can in mortar, introduce a large amount of diameter 0.1 ~ 0.5mm, be evenly distributed and the micropore of separate sealing, can increase 10%-20% microporosity, reduce the quantity of harmful macropore, make heat-insulating masonry mortar properties be improved significantly.
In view of above-mentioned, a kind of production method of light block special-purpose thermal insulation masonry dry powder mortar is:
First blast furnace slag is dropped into drum-type air flow dryer and dry after 10-15, through Vibration Screen divisional processing; Pearlstone being dropped into drum-type air flow dryer and spray mass concentration is that 10% methyl silanol sodium solution enters drying and processing; After adding mixing machine premix evenly the blast furnace slag of processing and hydrophobic expansion pearlite, again dry discharge fly ash, ordinary Portland cement, sodium bentonite, building gypsum plaster are added in mixing machine, then, add again and mix Vltra tears and Sodium dodecylbenzene sulfonate, mix and blend 5-10 minute, can discharging packing.The mortar of making is transported to packed or storehouse dress mode the scene of building by laying bricks or stones, only need measure on request to add water and stir and can use during construction operation, dewaters must not add other composition outward again.
The beneficial effect of advantage of the present invention and generation is:
1, the present invention adopts fine-celled foam and the compounded thermal insulation masonry dry powder mortar of grain slag light aggregate of light skeletal; its raw material has not only adopted industrial residue to gather materials as light weight sand; utilize water quenching granulating blast-furnace slag for sand, and further reduce mortar unit weight by introducing fine-celled foam.After tested, the thermal conductivity of light block special-purpose thermal insulation masonry mortar is 0.32 W/m.k.; Ultimate compression strength 7.9Mpa, in masonry construction process, thermal insulation masonry dry powder mortar of grain slag light aggregate properties of heat preservation and energy saving is close with block material heat conductivility, there is the better workability of more common masonry mortar, water-retentivity, cohesiveness and less drying shrinkage simultaneously, eliminated ordinary mortar and built by laying bricks or stones and cause and between building block mortar joint, have " cold-heat bridge " phenomenon so that produce dewfall, cracking phenomena.
2, raw material is easily purchased, and production unit is single, and it is packed that raw material mixes, and after scene only needs to add water and stirs, uses.Cost is low, has market application foreground widely.
3, technique of the present invention is simple, favourablely make it to realize suitability for industrialized production light block and light block special-purpose thermal insulation masonry dry powder mortar is supporting, market application foreground is wide, and building energy conservation is had to the synergism of becoming more meticulous with material and economize on resources, the social effect of waste utilization and emission reduction.
Embodiment
Below, the present invention is further described again in conjunction with the embodiments:
First 565 kilograms of blast furnace slags are dropped into drum-type air flow dryer and dry 10-15 minute, then, stand-by after Vibration Screen divisional processing; 50 kilograms of hydrophobic expansion pearlites are dropped into drum-type air flow dryers and spray mass concentration be after 10% methyl silicon sodium alcoholate, carry out after drying and processing stand-by.After adding mixing machine premix evenly by the blast furnace slag of processing and with hydrophobic expansion pearlite, again 100 kilograms of flyash, 250 kilograms of ordinary Portland cements, 15 kilograms of sodium bentonites, 13.5 kilograms of plaster of Paris are added in mixing machine, then, add again and mix 1.5 kilograms of Vltra tearss and 5 kilograms of Sodium dodecylbenzene sulfonatees, mix and blend 15 minutes, can discharging packing.
Mix and make M5.0 light block special-purpose thermal insulation masonry dry powder mortar.By bagged dry powder mortar be transported to add behind building site water stir thick rare evenly after, for building light heat insulation blocks by laying bricks or stones.Through infra-red thermal imaging measurement result, show: the light block body of wall of building by laying bricks or stones with this thermal insulation masonry dry powder mortar of grain slag light aggregate is compared with the light block body of wall of building by laying bricks or stones with ordinary mortar, mortar joint place cold-heat bridge basically eliminate, integral heat insulation performance obviously improves, cracking phenomena reduces significantly, illustrate and use the light block body of wall of grain slag light aggregate heat-insulating masonry mortar not only to eliminate cold-heat bridge, and improved wall insulation performance, and reduced body of wall temperature difference crack simultaneously, improved body of wall weather resistance.
Claims (2)
1. a light block special-purpose thermal insulation masonry dry powder mortar, is characterized in that mortar is to be made by following raw materials according, and its component and content (weight percent) are respectively:
Dry discharge fly ash 5-10%;
Ordinary Portland cement 20-30%;
Plaster of Paris (β half water) 1 ~ 2%;
Blast furnace slag 50-65%;
Hydrophobic expansion pearlite 3-10%;
Sodium bentonite 1-2%;
Vltra tears 0.1 ~ 0.15%;
Sodium dodecylbenzene sulfonate 0.1-0.5%.
2. the method for light block special-purpose thermal insulation masonry dry powder mortar as claimed in claim 1, is characterized in that first blast furnace slag being dropped into drum-type air flow dryer dries after 10-15, through Vibration Screen divisional processing; Pearlstone being dropped into drum-type air flow dryer and spray mass concentration is that 10% methyl silanol sodium solution enters drying and processing; After adding mixing machine premix evenly the blast furnace slag of processing and hydrophobic expansion pearlite, again dry discharge fly ash, ordinary Portland cement, sodium bentonite, building gypsum plaster are added in mixing machine, then, add again and mix Vltra tears and Sodium dodecylbenzene sulfonate, mix and blend 5-10 minute, can discharging packing.
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| CN201210325175.0A CN103664115B (en) | 2012-09-05 | 2012-09-05 | Special thermal insulation masonry mortar powder for lightweight block and production method thereof |
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| CN201210325175.0A CN103664115B (en) | 2012-09-05 | 2012-09-05 | Special thermal insulation masonry mortar powder for lightweight block and production method thereof |
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| CN103664115A true CN103664115A (en) | 2014-03-26 |
| CN103664115B CN103664115B (en) | 2015-07-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284763A (en) * | 2016-08-31 | 2017-01-04 | 江海红 | Exempt to tear lightweight self-heat conserving cast-in-situ wall and the preparation method of packing material thereof open |
| CN106380136A (en) * | 2016-08-25 | 2017-02-08 | 江西省建筑材料工业科学研究设计院 | Mortar special for autoclaved aerated concrete blocks |
| CN108484067A (en) * | 2018-04-19 | 2018-09-04 | 西北民族大学 | A kind of special cohesive premixing dry blend of lightweight concrete assembly plate and its production method |
| CN110818363A (en) * | 2019-12-18 | 2020-02-21 | 四川德胜绿色新材料科技有限公司 | Preparation method of lightweight aggregate concrete hollow building block |
| CN111439964A (en) * | 2020-01-06 | 2020-07-24 | 深圳市华威环保建材有限公司 | Dry powder heat-preservation masonry mortar prepared from waste aerated concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314537A (en) * | 2008-05-24 | 2008-12-03 | 西北民族大学 | Thermal insulation masonry dry powder mortar of grain slag light aggregate and producing method thereof |
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2012
- 2012-09-05 CN CN201210325175.0A patent/CN103664115B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101314537A (en) * | 2008-05-24 | 2008-12-03 | 西北民族大学 | Thermal insulation masonry dry powder mortar of grain slag light aggregate and producing method thereof |
Non-Patent Citations (1)
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| 刘绍团: ""探讨发泡剂和生石膏对玻化微珠保温砂浆的影响"", 《科学之友》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106380136A (en) * | 2016-08-25 | 2017-02-08 | 江西省建筑材料工业科学研究设计院 | Mortar special for autoclaved aerated concrete blocks |
| CN106380136B (en) * | 2016-08-25 | 2017-10-27 | 江西省建筑材料工业科学研究设计院 | Autoclave aerated concrete building block dedicated mortar |
| CN106284763A (en) * | 2016-08-31 | 2017-01-04 | 江海红 | Exempt to tear lightweight self-heat conserving cast-in-situ wall and the preparation method of packing material thereof open |
| CN108484067A (en) * | 2018-04-19 | 2018-09-04 | 西北民族大学 | A kind of special cohesive premixing dry blend of lightweight concrete assembly plate and its production method |
| CN110818363A (en) * | 2019-12-18 | 2020-02-21 | 四川德胜绿色新材料科技有限公司 | Preparation method of lightweight aggregate concrete hollow building block |
| CN111439964A (en) * | 2020-01-06 | 2020-07-24 | 深圳市华威环保建材有限公司 | Dry powder heat-preservation masonry mortar prepared from waste aerated concrete |
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| CN103664115B (en) | 2015-07-15 |
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