CN105272113A - Dry plastering technology - Google Patents

Dry plastering technology Download PDF

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Publication number
CN105272113A
CN105272113A CN201510760181.2A CN201510760181A CN105272113A CN 105272113 A CN105272113 A CN 105272113A CN 201510760181 A CN201510760181 A CN 201510760181A CN 105272113 A CN105272113 A CN 105272113A
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phosphogypsum
dry method
parts
water
mortar
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CN201510760181.2A
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李玮
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Guizhou Tengfeng Technology Co Ltd
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Guizhou Tengfeng Technology Co Ltd
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Abstract

The invention provides a dry plastering technology. The dry plastering technology comprises the following steps that solid materials and water are blended into ardealite mortar, wherein the solid materials are prepared from, by weight, 600-700 parts of ardealite, 300-400 parts of aggregates, 0.2-1.5 parts of redispersible latex powder, 0.2-0.3 part of a foaming agent, 1-1.5 parts of cellulose ether, 2 parts of a water reducing agent and 1-1.5 parts of a retarder; the ardealite mortar is painted on a base layer to be plastered. The dry plastering technology has the advantages of saving water, time and labor and the like.

Description

A kind of dry method plastering technique
Technical field
The present invention relates to plastering technique field, in particular to a kind of dry method plastering technique.
Background technology
Plaster to be commonly called as and whitewash, whitewash a wall, refer to and stir into sand-cement slurry with river sand, lime or mortar king, cement, mixing and water adding, then sand-cement slurry is smeared on metope or ground.
Because mortar workability used in existing plastering technique is poor, wet method therefore can only be adopted to plaster, the brick that must wet in advance before namely plastering, wet wall, this constructional method water loss is large, and wastes time and energy, and the later stage also needs through long dry process.
In view of this, special proposition the present invention.
Summary of the invention
The object of the present invention is to provide a kind of dry method plastering technique, described dry method plastering technique has water-saving, the advantage such as time saving and energy saving.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of dry method plastering technique, comprises the following steps:
Solid materials and water are mixed and stirred and form phosphogypsum mortar, described solid materials comprises: by weight, phosphogypsum 600-700 part, aggregate 300-400 part, redispersable latex powder 0.2-1.5 part, whipping agent 0.2-0.3 part, ether of cellulose 1-1.5 part, water reducer 2 parts, retardant 1-1.5 part;
Basic unit to be plastered whitewashes described phosphogypsum mortar.
Above-mentioned dry method plastering technique phosphogypsum mortar workability used is excellent, and to wet brick without the need to wet wall, dry construction can complete, therefore water-saving, time saving and energy saving.
Particularly, the solid materials of above-mentioned phosphogypsum mortar is made up of packing material and composite additive two parts.Wherein, packing material is made up of phosphogypsum and aggregate, instead of traditional cement, both phosphogypsum had been recycled, overcome again that cement easily chaps, the problem of hollowing, have that sagging performance is good, bonding strength is high, be applicable to multiple body of wall, fire resistance is good, heat insulating, construction are not subject to seasonal restrictions, can the advantage such as the outer humidity of adjusting ambient automatically; Composite additive is made up of redispersable latex powder, whipping agent, ether of cellulose, water reducer and retardant, mainly can improve dry linting and dehydrating phenomena.Particularly, redispersable latex powder can solve the cementability of mortar and the parcel of aggregate, improves workability, and improve liquidity energy, increases thixotroping and anti-property of hanging down, improves force of cohesion, prolongation open hour and enhancing water-retentivity; Especially the effect in hardened mortar improves mortar tensile strength, strengthens folding strength, reduces Young's modulus, improves deformability, promotes abrasive wear resistance, improves cohesive strength, reduces carbonation depth, reduces material water-absorbent, make material have hydrophobic nature etc.Foaming agent is got angry in mortar inside, improves mortar workability, improves impervious, the freeze proof and weather resistance of mortar, reduction mortar strength, increases mortar volume.Promoting agent solves mortar activity, later stage dry linting.Retardant is the hydration rate and the hydration heat that reduce phosphogypsum, thus reduces or avoid, because hydration heat too concentrates the crack producing temperature difference pressure and cause, delaying mortar coagulation time, extending the operating time.Water reducer can reduce mixing water amount.
Preferably, the weight ratio of described solid materials and water is: 1000:355-410.
Now the workability of mortar and setting rate all reach best.
Preferably, described solid materials also comprises promoting agent.Promoting agent is that to solve mortar active, avoids later stage dry linting, retardant is the hydration rate and the hydration heat that reduce cement or phosphogypsum, extend a kind of additive of time of coagulation.
Preferably, described retardant is trimeric cyanamide, and/or citric acid.
Preferably, described whipping agent is k-12 sodium lauryl sulphate, and k-12 sodium lauryl sulphate is prioritizing selection, and it not only has foaming effect, also has activation, can solve the problem of mortar later stage dry linting.
Preferably, described retardant is one or more in sulfomethylated lignin amine salt and derivative thereof, citric acid.
Preferably, described redispersable latex powder is neutral redispersable latex powder, and/or flexible redispersable latex powder.Wherein, the anti-contracility of flexible redispersable latex powder is stronger, and the anti-contracility deviation of neutral polymer dispersion powder, but the anti-extension ability of neutral polymer dispersion powder is better with the property pasted, therefore as preferred, the preferred neutral polymer dispersion powder of the present invention: the ratio of flexible polymer dispersion powder is 0.8-1.2:2 (weight ratio), more preferably 1:2.
Preferably, described aggregate is coarse whiting, and/or fine sand.
Preferably, described solid materials has following one-tenth to be grouped into: by weight, phosphogypsum 600-700 part, fine sand 300-400 part, redispersable latex powder 0.2-0.3 part, whipping agent 0.2-0.3 part, ether of cellulose 1-1.5 part, water reducer 2 parts, retardant 1-1.5 part.
The mortar of this solid materials composition is preferably as motar, building by laying bricks or stones and plastering for concrete brick various in bearing wall, non-load bearing wall, flyash brick and clay brick.
Preferably, described phosphogypsum adopts the phosphogypsum of washing and flotation, to alleviate the pollution to environment, improves the workability of mortar simultaneously.Particularly, soluble impurity (the particularly solubility P in phosphogypsum 2o 5) and the organism that can bubble through the water column very large to phosphogypsum performance impact, usually adopt different water temperature, ratio of water to material, washing times process phosphogypsum, then pH value determination judges water washing effect.The key point purified in water washing process has two: one to be through washing must obtain stable performance and foreign matter content meets the phosphogypsum of building materials requirement; Two is solve the secondary pollution caused in water washing process.Can by this type of impurity of major part except losing by washing.Flotation is when utilizing washing, the characteristic that organism is kept afloat, the organism removing will floated on the surface by floatation equipment.Floatation process belongs to wet processing in fact, before flotation, water and phosphogypsum are inputted floatation equipment with suitable ratio, then stir, leave standstill, remove the suspended matter of fluid surface, the method can remove organism and part soluble impurity, but remarkable unlike washing to the removal amount of soluble impurity, only adopt flotation pre-treatment can not prepare qualified building phosphogypsum.Floatation process also needs to introduce water, and only water can recycle, if realize scale process, compared with washing process except water consumption is less, the complexity difference of process is little, can be described as and partly washes washing process.When the organic matter in phosphogypsum is containing time higher, floatation process process can be adopted.
Preferably, also to comprise before described whitewashing: paste cake floating screed, plaster for big area and do basis, improve the planeness of plastering.Concrete size requires according to Base Smoothness and decorations and determines, and such as, during wall plastering, perpendicular muscle spacing is about 1.5m, and the wide 10-20mm of muscle is advisable.
Preferably, after whitewashing 24h-30h described in completing, boiling water maintenance; To guarantee that coat of plaster is without dehydrating phenomena.
Preferably, before described whitewashing, basic unit to be plastered pastes strengthening grid cloth, to increase the firmness in the face of plastering.
Compared with prior art, beneficial effect of the present invention is:
(1) recycle the phosphogypsum mortar that a kind of excellent performance developed by phosphogypsum, being to adopt dry construction for plastering, reaching water-saving, time saving and energy saving object.
(2) solve the problem such as dry linting, dehydration by the modification of additive, during for surface decoration, metope densification is smooth and do not play ash, has higher intensity and does not shrink, outward appearance elegance, odorlessness, flawless.
(3) phosphogypsum mortar used extends can the engineering time.
(4) construction is not subject to seasonal restrictions: when especially winter, (more than-5 DEG C) tried to meet the deadline for the project, the untired temperature of its hydration rate is low and obviously slow down, as long as mixing water does not freeze, namely having early strong fast solidifying characteristic, is the good material of indoor plastering construction in winter.
(5) phosphogypsum mortar used has that sagging performance is good, bonding strength is high, be applicable to the advantages such as multiple body of wall.
(6) curing cycle is short: presetting period 1.5 hours, and whole sclerosis and intensity engineering 1-2 up to standard days all complete, and greatly can increase work efficiency, speed up the work.
(7) can the outer humidity of adjusting ambient automatically: phosphogypsum belongs to a kind of porous material, is conducive to automatic surge chamber humidity, when indoor humidity is larger, breathes automatic moisture absorption; Under contrary condition, automatically can discharge the moisture of deposit, iterative cycles, indoor humidity be controlled within optimum range, for occupant creates good living environment.
(8) fire resistance is good: phosphogypsum belongs to inorganic materials, have not so property, when presence of fire, phosphogypsum hardenite has mass crystallization water to discharge under heat effect, form steam, block spreading of flame, simultaneously in the heat that whole dehydration middle rank is sent out a large amount of, thus improve the safety that resistivity against fire effectively ensures building.
(9) thermal and insulating performance is good: phosphogypsum hardenite is a kind of porous material, and thermal conductivity is little, and thermal and insulating performance is good.
(10) good workability: after scene adds water and stirs, directly upper wall is plastered without the need to using interfacial agents, and construction expanded area is large, when site environment is feasible, can adopt mechanically spraying, wall surface levelling place can thin limed construction; The thinlyyest do to 0.5 centimeter, labor and material saving saves time.
Embodiment
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but it will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting the scope of the invention.Unreceipted actual conditions person in embodiment, the condition of conveniently conditioned disjunction manufacturers suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, be and can buy by commercially available the conventional products obtained.
It is as shown in table 1 that aggregate (fine sand) grade hereafter in all embodiments joins district.The redispersable latex powder of the neutrality that all embodiments relate to or flexibility all refers to EAV (ethylene-vinyl acetate copolymer) latex powder.The water reducer that all embodiments relate to is polycarboxylate high performance water-reducing agent (making the country prosperous chemical building material company limited purchased from Suzhou City, SUNBOPC-2016).The ether of cellulose of the ether of cellulose that all embodiments relate to be viscosity be 300,000 units.
Table 1 aggregate grade joins district
Ith district IIth district IIIth district
5.00mm 10-0 10-0 10-0
2.5mm 35-5 25-0 15-0
1.25mm 65-35 50-10 25-0
0.63mm 85-71 70-41 40-16
0.315mm 95-80 92-70 85-55
0.16mm 100-90 100-90 100-90
Embodiment 1
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:355 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 600 parts, 300 parts, aggregate, redispersable latex powder 0.2 part, whipping agent 0.2 part, ether of cellulose 1 part, water reducer 2 parts, 1 part, sulfomethylated lignin amine salt.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
Rending plasters on wall floating screed: perpendicular muscle spacing is about 1.5m, and the wide 10 ~ 20mm of muscle is advisable.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Embodiment 2
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:410 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 700 parts, 400 parts, aggregate, redispersable latex powder 1.5 parts, whipping agent 0.3 part, ether of cellulose 1.5 parts, water reducer 2 parts, 1.5 parts, sulfomethylated lignin amine salt.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
Rending plasters on wall floating screed: perpendicular muscle spacing is about 1.5m, and the wide 10 ~ 20mm of muscle is advisable.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Embodiment 3
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:365 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 650 parts, 350 parts, aggregate, redispersable latex powder 0.3 part, whipping agent 0.3 part, ether of cellulose 1 part, water reducer 2 parts, 1 part, sulfomethylated lignin amine salt.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
Rending plasters on wall floating screed: perpendicular muscle spacing is about 1.5m, and the wide 10 ~ 20mm of muscle is advisable.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Embodiment 4
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:375 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 600 parts, 400 parts, aggregate, redispersable latex powder 0.2 part, whipping agent 0.2 part, ether of cellulose 1 part, water reducer 2 parts, 1 part, sulfomethylated lignin amine salt.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
Rending plasters on wall floating screed: perpendicular muscle spacing is about 1.5m, and the wide 10 ~ 20mm of muscle is advisable.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Embodiment 5
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:385 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 600 parts, 400 parts, aggregate, redispersable latex powder 0.2 part, whipping agent 0.2 part, ether of cellulose 1 part, water reducer 2 parts, citric acid 1 part, (5333) 0.5 parts.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
Rending plasters on wall floating screed: perpendicular muscle spacing is about 1.5m, and the wide 10 ~ 20mm of muscle is advisable.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Embodiment 6
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:395 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 600 parts, 400 parts, aggregate, redispersable latex powder 1 part, whipping agent 0.2 part, ether of cellulose 1 part, water reducer 2 parts, citric acid 1 part.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
Rending plasters on wall floating screed: perpendicular muscle spacing is about 1.5m, and the wide 10 ~ 20mm of muscle is advisable.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Embodiment 7
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:400 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 600 parts, 400 parts, aggregate, redispersable latex powder 1.5 parts, whipping agent 0.3 part, ether of cellulose 1 part, water reducer 2 parts, citric acid 1.5 parts.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
Rending plasters on wall floating screed: perpendicular muscle spacing is about 1.5m, and the wide 10 ~ 20mm of muscle is advisable.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Embodiment 8
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:400 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 600 parts, 400 parts, aggregate, redispersable latex powder 1.5 parts, whipping agent 0.3 part, ether of cellulose 1 part, water reducer 2 parts, citric acid 1.5 parts.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
Paste strengthening grid cloth: grid cloth and each matrix are had a common boundary width and should be less than 250mm and be advisable.Grid cloth requires mesh 4 × 4mm, grammes per square metre 165g/m 2.
Rending plasters on wall floating screed: perpendicular muscle spacing is about 1.5m, and the wide 10 ~ 20mm of muscle is advisable.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Embodiment 9
Preparation phosphogypsum mortar: to be mixed and stirred with the weight ratio of 1000:400 by solid materials and water and form, described solid materials comprises: by weight, phosphogypsum 600 parts, 400 parts, aggregate, redispersable latex powder 1.5 parts, whipping agent 0.3 part, ether of cellulose 1 part, water reducer 2 parts, citric acid 1.5 parts.
Metope substrate surface is floated the impurity such as ash, loose matter, greasy dirt and must be removed totally;
Base treatment, first with whitewashing phosphogypsum mortar 2-3mm, being repaired reserving hole, electronic box groove, box etc., after slurry drying, being carried out next procedure operation.
On the basis of previous step, whole meal flour brushes and states phosphogypsum mortar.
Should be noted in the construction of above embodiment:
Common plastering thickness is not less than 5mm (determining according to design requirements), and answer layering to carry out more than 12mm, every layer thickness controls in 12mm, after the final set of last layer slip, smear lower one deck again.When plastering, slip is smeared on the wall by hawk and trowel, strikes off compacting, accomplish that metope is straight with H type chi or scraper plate tight note mark muscle.
When in construction, coat of plaster is close to final set, forbid firmly rubbing, in order to avoid cause surface strength to reduce and dry linting phenomenon.
Phosphogypsum mortar mixing of materials ratio should be suitable, with reference to suggestion proportioning.One time charging capacity should be finished in specific time.
Use electric mixer during stirring, stir and need lubricating uniform, first time need stir three minutes, after staticly settling two minutes, carries out second time and stirs, and without obvious bulk or pasty state caking, can use after stirring.
Per half a day, construction was complete, should cleaning tool, mechanical means and operation place flooring etc. in time.
Building structure and the cracking in plaster that blockwork shrinks, sedimentation causes, patch work should be shunk until it and carry out after settlement stability.
Finished product protection: whitewash phosphogypsum mortar and forbid that before condensation water rushes, clashes into, vibrates and endures cold, prevent from staiing and damaging, whitewash the phosphogypsum presetting period generally at 1.5-2h, curing time must not be less than 48h.Finished product maintenance in summer: need after complete 24 hours of construction, surperficial boiling water maintenance, guarantees that coat of plaster is without dehydrating phenomena.
Suitable construction environment: 0-30 DEG C.
Experimental example
Evaluate the construction effect of all embodiments above, as shown in table 2.
Table 2 construction results
Embodiment 1-9
Dry linting Nothing
Crackle Nothing
Curing cycle ≥48h
Thermal conductivity W/ (mk) Be less than 0.1
Although illustrate and describe the present invention with specific embodiment, however it will be appreciated that can to make when not deviating from the spirit and scope of the present invention many other change and amendment.Therefore, this means to comprise all such changes and modifications belonged in the scope of the invention in the following claims.

Claims (10)

1. a dry method plastering technique, is characterized in that, comprises the following steps:
Solid materials and water are mixed and stirred and form phosphogypsum mortar, described solid materials comprises: by weight, phosphogypsum 600-700 part, aggregate 300-400 part, redispersable latex powder 0.2-1.5 part, whipping agent 0.2-0.3 part, ether of cellulose 1-1.5 part, water reducer 2 parts, retardant 1-1.5 part;
Basic unit to be plastered whitewashes described phosphogypsum mortar.
2. dry method plastering technique according to claim 1, is characterized in that, the weight ratio of described solid materials and water is: 1000:355-410.
3. dry method plastering technique according to claim 1, is characterized in that, described solid materials also comprises promoting agent.
4. dry method plastering technique according to claim 1, is characterized in that, described whipping agent is k-12 sodium lauryl sulphate.
5. dry method plastering technique according to claim 1, is characterized in that, described retardant is one or more in sulfomethylated lignin amine salt and derivative thereof, citric acid.
6. dry method plastering technique according to claim 1, is characterized in that, described redispersable latex powder is neutral redispersable latex powder, and/or flexible redispersable latex powder.
7. dry method plastering technique according to claim 1, is characterized in that, described aggregate is coarse whiting, and/or fine sand.
8. dry method plastering technique according to claim 1, it is characterized in that, described solid materials consists of the following composition: by weight, phosphogypsum 600-700 part, fine sand 300-400 part, redispersable latex powder 0.2-0.3 part, whipping agent 0.2-0.3 part, ether of cellulose 1-1.5 part, water reducer 2 parts, retardant 1-1.5 part.
9. dry method plastering technique according to claim 1, is characterized in that, also comprises before described whitewashing: paste cake floating screed.
10. dry method plastering technique according to claim 1, is characterized in that, after whitewashing 24h-30h described in completing, and boiling water maintenance; Preferably, before described whitewashing, basic unit to be plastered pastes strengthening grid cloth.
CN201510760181.2A 2015-11-10 2015-11-10 Dry plastering technology Pending CN105272113A (en)

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CN110845210A (en) * 2019-12-05 2020-02-28 贵州鑫鸿黔建材有限公司 Preparation method of light gypsum
CN112552001A (en) * 2020-12-07 2021-03-26 绵竹市铸诚混凝土有限公司 Phosphogypsum mortar for load-bearing structure and preparation method thereof
CN114907084A (en) * 2021-02-07 2022-08-16 广东山众建筑科技有限公司 Phosphogypsum-based building material and preparation method thereof

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