CN103664115B - 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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- CN103664115B CN103664115B CN201210325175.0A CN201210325175A CN103664115B CN 103664115 B CN103664115 B CN 103664115B CN 201210325175 A CN201210325175 A CN 201210325175A CN 103664115 B CN103664115 B CN 103664115B
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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 steel mill's blast-furnace slag and moisture proof expansive Pearle of adopting to gather materials as light weight sand, take Sodium dodecylbenzene sulfonate as thermal-insulating type masonry mortar and the production method thereof of air entrapment agent.
Background technology
Masonry mortar is a kind of mortar that in construction work, consumption is maximum, though direct bearing load, plays bonding monolithic masonry, masonry builds that to join reinforcing bar be one overall, make it the effect with supporting capacity.Generally, the bearing capacity of masonry is not only decided by performance and the constructional feature of block materials used also to depend on the performance of masonry mortar.Masonry mortar, except should meeting the mechanical requirements of transmission load, compatible deformation, should meet sealing simultaneously and build seam by laying bricks or stones, prevent the requirement that air water permeates.In recent years, country is to building energy conservation pay attention to day by day, require more and more higher to thermal technology's property of construction wall, various energy saving type lightweight building block widespread use, along with deeply carrying out of Building Energy-saving Work, urgently need a kind of heat preservation and energy conservation effects good in construction work, there is the masonry mortar of good frost resistance and low drying shrinkage and splitting resistance.For heat-insulating masonry mortar except while should meeting above-mentioned usual requirement, also require that there is the heat conductivility close with the light block material, to eliminate " cold-heat bridge " at building mortar layer place, improve integral heat insulation heat-proof quality.Thermal conductivity should control 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 based on M5 and M7.5.Because heat-preserving energy-saving type light block has porous matrix more, more easily absorb water, 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 at 70 ~ 90mm; Delamination degree answers≤20mm.The mortar self simultaneously with good durability is survivable, thus ensures masonry one-piece construction safety, and this just requires that heat-insulating masonry mortar has good frost resistance and low drying shrinkage and splitting resistance.
Summary of the invention
Need for construction work, object of the present invention is intended to produce for light heat insulation blocks masonry project provide a kind of Special thermal insulation masonry mortar powder for lightweight block.The present invention adopts fine-celled foam and the light know-why of light skeletal compound system, not only have employed industrial residue to gather materials as light weight sand, and reduce mortar unit weight further by introducing fine-celled foam, obtain better heat insulation effect, achieve the optimization of mortar slurry microporous structure simultaneously, the remarkable workability improving mortar, improves the Frost Resistance of mortar.By anti-cracking shrinkage-reducing admixture, water retentivity of mortar is improved, shrink and reduce, cohesiveness and frost resistance improve, and obviously improve workability and the weather resistance of mortar.
Another object of the present invention is to the production method that a kind of Special thermal insulation masonry mortar powder for lightweight block is provided.
Object of the present invention realizes by following mortar formula and process of preparing:
A kind of Special thermal insulation masonry mortar powder for lightweight block, dry-mix is made up of 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%.
Mortar dispensing information:
1, grain slag (blast furnace slag) and hydrophobic expansion pearlite are the light aggregate of thermal insulation mortar, and grain slag and hydrophobic expansion pearlite relative usage, determine the tap density of heat-insulating masonry mortar, thus 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, along with the increase of blast furnace slag aggregate, mortar degree of compactness improves, and fine-celled foam falls the just relative minimizing of density material occupancy with hydrophobic expansion pearlite etc. without intensity, and mortar ultimate compression strength increases; When blast furnace slag used entirely by large until mortar, ultimate compression strength change is little.Improve cement consumption, mortar ultimate compression strength significantly improves, and dry density also obviously increases, and thermal conductivity can not meet the demands.
2, wilkinite is mineral type water-holding agent, usually 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 plays effect preferably as high-performance water-retaining agent to the workability improving mortar.
4, Sodium dodecylbenzene sulfonate is as mortar air entrapment agent, a large amount of diameter 0.1 ~ 0.5mm can be introduced in mortar, be evenly distributed and separate closed micropore, 10%-20% microporosity can be increased, 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 Special thermal insulation masonry mortar powder for lightweight block is:
First blast furnace slag is dropped into after drum-type air flow dryer carries out oven dry 10-15, through Vibration Screen divisional processing; Pearlstone being dropped into drum-type air flow dryer and spraying mass concentration is that 10% methyl silanol sodium solution enters drying and processing; The blast furnace slag of process and hydrophobic expansion pearlite are added mixing machine premix evenly after, 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 packaging.The mortar made is transported in packed or storehouse dress mode the scene of building by laying bricks or stones, only need measure that adding water stirs can use during construction operation on request, must not add other composition more in addition to water.
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 not only have employed industrial residue and gathers materials as light weight sand; utilize water quenching granulating blast-furnace slag for sand, and reduce mortar unit weight further 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, eliminate ordinary mortar and build by laying bricks or stones and cause existence " cold-heat bridge " phenomenon between building block mortar joint so that produce condensation, cracking phenomena.
2, raw material is easily purchased, and production unit is single, and raw material mixing is packed, uses after scene only needs to add water and stirs.Cost is low, has market application foreground widely.
3, present invention process is simple, favourable make it to realize suitability for industrialized production light block and Special thermal insulation masonry mortar powder for lightweight block supporting, market application foreground is wide, and to building energy conservation material have become more meticulous synergism 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; It is stand-by after carrying out drying and processing after 10% methyl silicon sodium alcoholate for 50 kilograms of hydrophobic expansion pearlites being dropped into drum-type air flow dryer and sprays mass concentration.By the blast furnace slag of process with and hydrophobic expansion pearlite add mixing machine premix evenly after, 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 packaging.
Mix and make M5.0 Special thermal insulation masonry mortar powder for lightweight block.Add water after bagged dry powder mortar is transported to building site stir thick rare evenly after, for building light heat insulation blocks by laying bricks or stones.Show through infra-red thermal imaging measurement result: 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 significantly 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 improve wall insulation performance, decrease body of wall temperature difference crack simultaneously, improve body of wall weather resistance.
Claims (2)
1. a Special thermal insulation masonry mortar powder for lightweight block, it is characterized in that mortar is made up of following raw materials according, its weight percentages content is respectively:
Dry discharge fly ash 5-10%;
Ordinary Portland cement 20-30%;
β half water plaster of Paris 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 Special thermal insulation masonry mortar powder for lightweight block as claimed in claim 1, after it is characterized in that first blast furnace slag being dropped into drum-type air flow dryer carries out oven dry 10-15, through Vibration Screen divisional processing; Pearlstone being dropped into drum-type air flow dryer and spraying mass concentration is that 10% methyl silanol sodium solution enters drying and processing; The blast furnace slag of process and hydrophobic expansion pearlite are added mixing machine premix evenly after, 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 packaging.
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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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| CN103664115B true CN103664115B (en) | 2015-07-15 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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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| 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)
| Title |
|---|
| "探讨发泡剂和生石膏对玻化微珠保温砂浆的影响";刘绍团;《科学之友》;20100930;第36-38页 * |
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