CN105399389A - Building inner wall whitewashing gypsum and process flow thereof - Google Patents

Abstract

The invention relates to building inner wall whitewashing gypsum and a process flow thereof. The whitewashing gypsum is prepared by taking a semi-hydrated gypsum gelled material as a base material, glazed hollow beads, calcium powder, yellow sand, cellulose, calcium formate, starch and a retarder as additional materials and graphene as an additive, and the weight proportions of the components are as follows: 40-45% of the semi-hydrated gypsum gelled material, 5-6% of glazed hollow beads, 5-6% of calcium powder, 42-47% of yellow sand, 0.05-0.06% of cellulose, 0.4-0.5% of calcium formate, 0.05-0.06% of starch, 0.05-0.06% of retarder and 1.5-2% of graphene. The process flow of the building inner wall whitewashing gypsum comprises the following steps: processing a wall surface base course; hanging a wire mesh; protecting corners; screeding; spraying and striking off with a machine; and trimming heads of skirting parts. The whitewashing gypsum provided by the invention is free to operate, easy to level and convenient to construct after being applied to a wall, thereby radically solving the problems of climatic factor restriction, high project construction period requirements, frequent segmented acceptance of a main body, outstanding blending and transportation conflicts and the like; and the whitewashing gypsum is mixed by men or machines, and is beneficial for cross operation and reasonable construction organization.

Description

A kind of inner wall of building brushing gypsum and technical process thereof

[technical field]

The present invention relates to building material technical field, specifically a kind of inner wall of building brushing gypsum and technical process thereof.

[background technology]

In recent years, along with " Four-New technology " is in the increasing of building field promotion efficiency, many novel materials are applied, and have promoted the raising of construction quality.For dry, that day and night temperature is large area, plaster by sand-cement slurry and fundamentally can not administer the common quality defect that cement drying shrinkage causes sky of plastering to split, split problem at concrete surface, haydite and plastering of aerated concrete masonry sky particularly outstanding.

Along with the raising of people's living standard, the improvement of living conditions and living environment is one of important symbol.People not only require spaciousness of living, and more require higher living quality and more comfortable living environment.And along with the fast development of construction industry, novel wall material, with its lightweight, the feature such as high-strength, energy-conservation, obtains extensive application in construction market, some traditional materials just progressively substitute by type material.As wall plastering material all uses the way of traditional cement mortar and mixed mortar can not meet the needs of far away, these traditional plastering materials also exist easy to crack, hollowing, the shortcomings such as ash is many, adhesive property is poor that land.Secondly, because setting and harden is slow, particularly in the winter time in the low situation of temperature, plastering process and the last decoration process timed interval, in reasons such as two weeks are even longer, have become the biggest obstacle restricting rapid construction.

Therefore, if a kind of novel brushing gypsum can be provided as plastering material for inner wall, to solve the above-mentioned problems such as sky splits of plastering mentioned, make it be enough to replace traditional sand-cement slurry, can promote the use of within the specific limits, and have very important significance.

[summary of the invention]

Object of the present invention is exactly will solve above-mentioned deficiency and provide a kind of inner wall of building brushing gypsum and technical process thereof, this brushing gypsum operates freely after wall, receive light easily, easy construction, fundamentally solve the restriction of climate factor, the duration of a project require tight, main body often segmentation check and accept, prepare burden and transport the problems such as particularly thorny, this brushing gypsum adopts artificial, machine mix, be conducive to cross-operation, rationalization constructs.

Design a kind of inner wall of building brushing gypsum for achieving the above object; described brushing gypsum with semi-hydrated gypsum gelling material for base-material; with glass bead, calcium powder, yellow ground, Mierocrystalline cellulose, calcium formiate, starch, retardant for additional materials; take Graphene as additive; the weight proportion of above-mentioned each component is: semi-hydrated gypsum gelling material 40-45%; glass bead 5-6%; calcium powder 5-6%; yellow ground 42-47%; Mierocrystalline cellulose 0.05-0.06%, calcium formiate 0.4-0.5%, starch 0.05-0.06%; retardant 0.05-0.06%, Graphene 1.5-2%.

The technical process of this inner wall of building brushing gypsum, comprises the following steps,

1) metope base treatment: metope substrate surface is cleaned out, body of wall stuff up a crack and wire casing are repaired, adopt same type of material process firmly smooth convexconcave part in metope basic unit and unreserved hole, integral wall surface evenness is less than 8mm, and verticality is less than 5mm;

2) linked network: adopt fiberglass gridding cloth to carry out crack resistence process in body of wall unlike material junction, grid cloth need be evened up, and both sides tower spreading degree is not less than 100cm, and adopt gypsum mortar point-like of the same race to cement, affixed points spacing is 300-500mm;

3) corner protector: adopt gypsum mortar of the same race to carry out corner protector construction, need increase metal protection corner bar separately to principal passage body of wall corner;

4) floating screed: first accomplish fluently control ash cake at body of wall two ends, then complete body of wall two ends floating screed according to ash cake condition, according to the floating screed that two ends complete, bracing wire completes other position floating screed of metope, and two muscle spacing are 1.2-1.5m, and floating screed is wide is 30-50 ㎜;

5) machine sprays, strikes off: brushing gypsum is adjusted to suitable consistency, spray gun is guided to move around fast in the horizontal direction with constant speed, evenly spray from top to bottom, coating thickness is higher than mark muscle 1mm, after spraying, when mortar is slightly received dry, adopt aluminium alloy scraper plate floating from lower to upper along mark muscle immediately, with the material scraped, recess is made up a deficiency;

6) head is received at skirt position: metope skirt part is carried out machinery simultaneously and plastered.

Compared with the existing technology, tool has the following advantages in the present invention:

(1) not hollowing, do not ftracture: gypsum and water react and are formed after dihydrate gypsum, molecular weight increases volumetric expansion, the Volume Kill excessive moisture expanded runs off the contraction caused, after comprehensive, volume change is well below sand-cement slurry, and the gypsum purity of this brushing gypsum product is better than other products, fill a prescription more scientific and reasonable, can guarantee that metope 100% is without hollowing, without cracking;

(2) speed is constructed soon, easily: brushing gypsum product aquation is fast, whitewash intensity on metope can increase soon, thus guarantee that the metope after whitewashing at utmost avoids the impact of environment, run into extreme climate wall plaster still can carry out with guaranteeing both quality and quantity, after whitewashing as sand-cement slurry, need maintenance, the metope after this brushing gypsum whitewashes thoroughly has taken leave of maintenance;

(3) can breathe, temperature adjustment is wet, more comfortable: the structure after gypsum aquation is vesicular, numerous micropores makes metope be provided with the function of " breathing ", malaria can become dry, this advantage has more been deepened in the formula of this brushing gypsum product, be applied to vault metope to solve the problem of " moisture ", and the gypsum after aquation has two crystal water, can be discharged in air under the environment of drying, indoor humidity reaches balance, realize real comfortable house, and the metope of traditional cement mortar is in alkalescence, this brushing gypsum metope potential of hydrogen is consistent with the numerical value of human body, more comfortable,

(4) more energy-conservation, more environmental protection: the common people is lower than Cement industry for gypsum industry energy consumption, the application of this brushing gypsum belongs to energy-conservation and comprehensive utilization of resources industry, government payes attention to development gypsum industry, gypsum metope comparatively cement wall surface has better heat retaining property, in use can reduce house energy consumption, and not containing glue composition in brushing gypsum product, and select synthetic gypsum, avoiding the radioelement in the plaster of paris, is one of product of most environmental protection in wall covering;

To sum up: brushing gypsum of the present invention a kind ofly adapts to indoor novel wall and the special green environmental protection plastering material of ceiling, this brushing gypsum operate freely after wall, smoothly, receipts light is easy, easy construction, fundamentally solve the restriction of climate factor, duration of a project requires tight, main body often segmentation (position) is checked and accepted, the while that agent structure, building wall and finishing being plastered, materials in construction usage quantity is large, prepares burden and transports the problems such as particularly thorny, and this brushing gypsum adopts artificial, machine mix, be conducive to cross-operation, rationalization constructs; In addition, this brushing gypsum, with its good physical and mechanical property and processing property, also day by day gets the nod and promotes the use of, and in flourish gesture, has good workability, water-retentivity.

[embodiment]

The invention provides a kind of inner wall of building brushing gypsum; this brushing gypsum with semi-hydrated gypsum gelling material for base-material; with glass bead, calcium powder, yellow ground, Mierocrystalline cellulose, calcium formiate, starch, retardant for additional materials; take Graphene as additive; the weight proportion of above-mentioned each component is: semi-hydrated gypsum gelling material 40-45%; glass bead 5-6%; calcium powder 5-6%; yellow ground 42-47%; Mierocrystalline cellulose 0.05-0.06%, calcium formiate 0.4-0.5%, starch 0.05-0.06%; retardant 0.05-0.06%, Graphene 1.5-2%.As: (1) semi-hydrated gypsum gelling material 40%, glass bead 6%, calcium powder 6%, yellow ground 45.32%, Mierocrystalline cellulose 0.06%, calcium formiate 0.5%, starch 0.06%, retardant 0.06%, Graphene 2%; (2) semi-hydrated gypsum gelling material 40.95%, glass bead 5%, calcium powder 5%, yellow ground 47%, Mierocrystalline cellulose 0.05%, calcium formiate 0.4%, starch 0.05%, retardant 0.05%, Graphene 1.5%; (3) semi-hydrated gypsum gelling material 45%, glass bead 5.5%, calcium powder 5.085%, yellow ground 42%, Mierocrystalline cellulose 0.055%, calcium formiate 0.45%, starch 0.055%, retardant 0.055%, Graphene 1.8%.

The technical process of this inner wall of building brushing gypsum, comprises the following steps,

1) metope base treatment: metope substrate surface is cleaned out, body of wall stuff up a crack and wire casing are repaired, adopt same type of material process firmly smooth convexconcave part in metope basic unit and unreserved hole, integral wall surface evenness is less than 8mm, and verticality is less than 5mm;

2) linked network: adopt fiberglass gridding cloth to carry out crack resistence process in body of wall unlike material junction, grid cloth need be evened up, and both sides tower spreading degree is not less than 100cm, and adopt gypsum mortar point-like of the same race to cement, affixed points spacing is 300-500mm;

3) corner protector: adopt gypsum mortar of the same race to carry out corner protector construction, need increase metal protection corner bar separately to principal passage body of wall corner;

4) floating screed: first accomplish fluently control ash cake at body of wall two ends, then complete body of wall two ends floating screed according to ash cake condition, according to the floating screed that two ends complete, bracing wire completes other position floating screed of metope, and two muscle spacing are 1.2-1.5m, and floating screed is wide is 30-50 ㎜;

5) machine sprays, strikes off: brushing gypsum is adjusted to suitable consistency, spray gun is guided to move around fast in the horizontal direction with constant speed, evenly spray from top to bottom, coating thickness is higher than mark muscle 1mm, after spraying, when mortar is slightly received dry, adopt aluminium alloy scraper plate floating from lower to upper along mark muscle immediately, with the material scraped, recess is made up a deficiency;

6) head is received at skirt position: metope skirt part is carried out machinery simultaneously and plastered.

Brushing gypsum of the present invention is base-material with gypsum, is aided with additional materials of good performance of plastering (glass bead, calcium powder, yellow ground, Mierocrystalline cellulose, calcium formiate, starch, retardant) and additive (Graphene) etc. formulated.Through generating dihydrate gypsum crystal and a small amount of sulplo-aluminate with water mix aquation, the mutual cross connection of these crystal, form network structure, brushing gypsum slurry is made to lose flowability and condense, along with going deep into of aquation, after condensation, hydrated product continues to generate, and crystal also becomes large gradually, network structure is closely knit at short notice, thus produces comparatively high bond strength and anti-folding and ultimate compression strength.Treat that moisture in brushing gypsum hardenite is by surface evaporation, and after body of wall absorbs and get rid of completely, possess very high intensity.Therefore there is following characteristic:

(1) have quality exquisiteness, smooth, do not fall ash, fire resistance, and have the green product of excellent water resistance;

(2) adopt mixing facies pattern formula, grating be reasonable, technique is advanced, technological precedence, steady quality;

(3) there is respiratory function, can indoor air humidity be regulated, "dead", antibacterial nontoxic, belong to Green environmental-protection building material;

(4) coat of plaster and basic unit bond firmly, not hollowing, do not come off, aquation microdilatancy, suppress cracking, fast solidifying, in hydration process, intensity increases continuously, is easy to craft or machinery is plastered, and has easy construction, efficiency is high, lands the advantages such as ash is few;

(5) have higher strength property, brushing gypsum is along with the change of temperature and ventilation condition change, and moisture content can be got rid of and setting and harden in the short period of time, therefore has good early strength; Under general nature condition, 7d does Compressive Strength can reach more than 8Mpa, and later strength also along with the continuous eliminating of free-water, and can increase later strength;

(6) there is heat-insulation and heat-preservation and sound-proofing properties, brushing gypsum in condensing process along with the eliminating of moisture content, the hole that inner generation is small, its pore texture fine and even, therefore the little acoustic pressure that can decay of thermal conductivity, can prevent acoustic energy transmission again, add that the thermal lag of gypsum itself is high, therefore body of wall heat radiation is slow, serves effect that is heat insulation, sound insulation;

(7) solve the problem of plastering of different basic unit targetedly, the high-performance point-and-shoot plastering material of original custom of plastering can be kept again, good decorating effect;

(8) brushing gypsum that with the addition of Graphene improves more at aspect of performances such as ultimate compression strength, folding strength, bonded rate, cohesive strengths, adds time limit of service and the stability in use of material;

(9) should be noted: the mortar mixed and stirred must be finished in 50 minutes, the mortar hardened, can not add water use again; Instrument, the container Bi Bixu of the operation of plastering of brushing gypsum clean up, otherwise can affect the result of use of brushing gypsum; Brushing gypsum product is only limitted to indoor plastering operation, generally must not be used for outdoor location.

This brushing gypsum mortar take semi-hydrated gypsum as gelling material and to add Graphene be auxiliary material premixing mortar, compared with traditional sand-cement slurry, has cohesive strength, not easily hollowing cracking; Thermal conductivity is little, fire prevention, and having respiratory function, the features such as energy-saving heat preserving, is the green wall material of a kind of applicable human settlement; And the brushing gypsum that with the addition of Graphene comparatively before do not add Graphene brushing gypsum compare, then indices performance improves and more perfect all relatively.The following detailed description of its technical process:

One, this brushing gypsum scope of application:

(1) application site: be applicable to the various base course wall of inner wall of building (onsite concrete, brick structures, concrete segment, air-entrained concrete building block, various material sheet material);

(2) position is not suitable for: exterior wall, have (as kitchen and toilet) between boiled water room;

(3) because gypsum mortar is very fast for time of coagulation, on-the-spot mortar concentrated compactness feed is not suitable for.

Two, preparation of construction:

(1) execution conditions: in situ temperature is 5-40 degree Celsius; Before materials arrival, scene should provide the warehouse can piling prebagged material; Working-yard should possess water flowing, energising and carriage vertically condition, and water power should keep stable; Construction equipment debugging is complete, operational excellence.

(2) boundary condition: building wall operation (forming column, stuff up a crack) completes, and structural plane has been cleared up; Water power fluting, tubine are complete, and repairing completes, and the pre-buried receipts head of box of the various ends completes; Field control line has marked, and tells somebody what one's real intentions are with the personnel of whitewashing;

(3) finished product protection: indoor terrace cleaning is clean, and spreads clean plank along wall, prevents mortar from polluting terrace, is beneficial to land grey reuse simultaneously; Exterior wall sash, built-in fitting and equipment, railing etc. paste film wrapped and put in place, prevent from polluting during mechanically spraying; To all kinds of reserved cavity, the box plastic foam shutoff of all kinds of ends, prevent mechanically spraying from being blocking.

Three, plant:

(1) performance advantage of mixing pump: fully automatically dry substance is mixed with water; Successively by material spraying on wall, without any waste; Efficiently, be the 3-5 of artificial construction's efficiency doubly; When 15mm thickness, can spray 720 meter squared per day or only change spiral pump can reach 1200 square metres; 6 people one construction teams, 1 people's filler, 1 people's spraying, 4 people are floating, can construction limit, limit filler; Dry, hygroscopic water district, residue dry substance can continue to continue to employ, without the need to cleaning, not waste; Easy to clean, special tool cleans, and only needs 5-10 minute; Dismounting, assemble convenient, convenient in carrying, be suitable for villa use.

(2) mixing pump Operation Key and precaution: by valve regulated flooding quantity size, reach the denseness regulating gypsum mortar; Before construction, suitably regulate the denseness of gypsum mortar according to on-site actual situations, easy to operate.On-the-spot interim unstable with water hydraulic pressure, bucket is set and guarantees that flooding quantity is stablized.After having constructed, clear up feeding pipe in time, avoid blocking pipe after gypsum mortar initial set.

Four, technical process

1, situ interfacial examination, material installation are checked and accepted

1) situ interfacial is checked and accepted: before plastering, the dust, dirt, oil stain etc. of substrate surface should be removed totally; Body of wall stuff up a crack and wire casing are repaired rear without delamination, hollowing, leakless; The defect such as convexconcave part and unreserved hole in basic unit, the process of application same type of material is firmly smooth, and integral wall surface evenness is less than 8mm, and verticality is less than 5mm; Between the auxiliary frame of outer door and window steel and body of wall, gap uses and completes with dry sand-cement slurry stuff up a crack; Consider that between the auxiliary frame of steel and body of wall, gap exists the possibility that seeps water, side, door and window hole employing dry sand-cement slurry is whitewashed and is synchronously carried out to the auxiliary frame stuff up a crack of steel.

2) material installation is checked and accepted: work certificate book, the Performance Detection of brushing gypsum are reported, reinspection is reported and proportioning record is complete; Work certificate book and the site acceptance record of the reinforcement materials such as fiberglass gridding cloth are complete.

2, linked network

Lay 200 wide fiberglass gridding cloths with the vertical junction of differing materials at the bottom of beam, for improving effect of anti-cracking, should adopt a little sticky, affixed points spacing 300-500mm, grid cloth will be evened up.

3, corner protector and floating screed

Setting space is first answered to be 1.2 ∽ 1.5m coat of plaster ash cakes; By ash cake condition, adopt homogeneity plastering material to carry out floating screed, floating screed is wide is preferably 30 ∽ 50 ㎜; The sand-cement slurry that should adopt of the external corners such as Door and window frame hands over overall budget to make separate arrangements construction.

4, machine sprays, strikes off

1) suitable denseness adjusted to by mortar, guides spray gun to move around fast in the horizontal direction with constant speed, evenly sprays from top to bottom, and coating thickness wants a little higher than mark muscle to be about 1mm; Making spray gun slightly to upwarping when spraying wall cement slurry, can not be sprayed on metope at a right angle; Between the spacing of nozzle and metope should be inside 10 and 20.

2), after mortar spraying, floating construction should be carried out immediately; Floating from lower to upper along mark muscle with aluminium alloy scraper plate, with the material scraped, recess is made up a deficiency, accomplish that a bar is floating as far as possible.

3) mortar slightly hard after, check degree of plainness for wall surface with 2m guiding ruler, slightly high scrapes, so slightly low that to make up a deficiency.

5, head is received at skirt position: metope skirt part can be carried out machinery simultaneously be plastered.

Five, construction process (stage) controls:

(1) linked network: adopt glass fiber net to carry out crack resistence process in body of wall unlike material junction, both sides tower spreading degree is not less than 100cm, adopts gypsum mortar point-like of the same race to cement.

(2) corner protector: on-the-spot adopt gypsum mortar of the same race to carry out corner protector construction, construction way and ordinary mortar similar.By putting into practice rear proof, gypsum mortar corner protector can reach the crashproof requirement of sand-cement slurry corner protector completely; Principal passage body of wall corner can increase metal protection corner bar separately according to design requirements, prevents from breaking external corner during carrying article.

(3) floating screed: according to room standard width of a room in an old-style house depth size control requirement, carries out floating screed construction (controlling by being less than standard standard width of a room in an old-style house depth 3-5mm), will notice that properly distributed controls the thickness of floating screed in construction; Verticality, standard width of a room in an old-style house depth to be checked after completing in time whether within permissible variation scope, need process in time upon hardening if any off-gage phenomenon; First one-tenth-value thickness 1/10 is completed at body of wall two ends according to what calculate in floating screed process, accomplish fluently control ash cake and complete body of wall two ends floating screed according to ash cake again, according to the floating screed that two ends complete, bracing wire completes other position floating screed of metope, two muscle spacing should control at about 1.5 meters, the wide 20mm of mark muscle is advisable, and strikes off operation construction after being convenient to spraying.

(4) machine sprays, strikes off: after corner protector, floating screed have some strength, can big area machine spraying application.Spraying mortar workability is suitable for, and (not flow pendant for good) work is responsible for by special messenger, is evenly sprayed from top to bottom; When same wall surface spraying completes, and when mortar is slightly received dry, enter floating rule immediately and strike off treatment process.Strike off in construction and want the control of strict floating screed, careful process; Entirety has struck off carries out special treatment afterwards to negative and positive angle and local defect.

Six, inspection and acceptance:

(1) metope basic unit checks and accepts: when gypsum mortar is marched into the arena and constructed, a series of preposition work such as the forming column of building wall, stuff up a crack, water power fluting tubine, end box are pre-buried must all complete, existing problems rectification is repaired, every receipts head all completes, and this work guarantees that can gypsum mortar construct the key as scheduled, normally implemented.

(2) linked network, corner protector, floating screed are checked and accepted: this work is the key guaranteeing gypsum mortar construction quality, and linked network arrival rate, lap length, the smooth-going state of reinforced glass fiber net paving are the guarantees that can this position of later stage ftracture; Floating screed, corner protector qualification rate are that after metope entirety completes, the absolute prerequisite of quality ensures.

(3) finished surface is checked and accepted.

(4) inspection lot of brushing gypsum plastering engineering should divide by following regulation: between every 50 natures of indoor plastering engineering of same process and execution conditions, (large area room and corridor are between one by area 30 ㎡ that plasters) should be divided into an inspection lot, also should be divided into an inspection lot between less than 50.

(5) check that quantity should meet the following requirements: indoor each inspection lot at least should spot-check 10%, and is no less than between 3; Exhaustive test is answered during less than 3.

(6) all the other indices are plastered with reference to routine and are controlled, and its standard for acceptance and method are as following table one:

Table one

Seven, easy question topic and pre-control scheme: (1) brushing gypsum is forbidden to make moist, the transport of sleet sky should take strict safeguard procedures.(2) coat of plaster must not be endured cold caking before final set, should carry out anti-frost protection measure; What rainy day construction should take preventing rain wash blocks measure.(3) brushing gypsum can adopt mode of manually plastering, but due to the toughness of material own, operating efficiency can decline to some extent.(4) the gypsum mortar table time of coagulating is about 20 minutes, therefore applies special messenger during shotcrete construction and follows and carry out troweling; After wiping, material should collect reuse at once, otherwise easily hardens; The material of sclerosis goes up wall again, easily causes hollowing to peel off equivalent risk.(5) complete metope of constructing should be avoided colliding with and water punching immersion, and gypsum is air-setting material, should open door and window and keep room ventilated.

Gypsum metope of the present invention and traditional cement mortar metope, its performance comparison is as following table two:

Contrast project	Corresponding unit	Traditional cement mortar metope	Gypsum metope of the present invention
				Complete effect	/	Commonly plaster, error is large	Seniorly plaster, error is little
Cracking, hollowing	/	Ubiquity	Nothing
				Thickness requirement	mm	≥15	≥5
Construction temperature	℃	5-35	5-40
				Shear bonding strength	MPa	≥0.1	≥0.4
7 days linear shrinkages	％	0.066	0.031
				Linear shrinkage in 14 days	％	0.230	0.033
Thermal conductivity	W/(m.k)	0.93	0.18
				20mm plasters	/	Point to plaster for two times, execute every other day	Survive for one time
Speed of application	/	Slowly	Hurry up
				Mode of operation	/	Wet trade	Dry operation
Maintenance cost	/	Cannot estimate	0

Table two

Below in conjunction with specific embodiment, following further illustrating is done to the present invention:

(1) brushing gypsum is used for the wall plastering of various masonry panel.This wall plastering thickness can reach 2-3 centimetre.Generally adopt 1:2 ∽ 1:3 gypsum mortar to make scratch coat (intensity of this whitewash mortar should be suitably high) for saving starting material, then smearing thin layer surface layer whitewash gypsum on its surface, thickness is generally 2 ∽ 3 millimeters.This method also uses and serious uneven concrete wall surface.

(2) the various wallboards of more smooth concrete and non-gypsum type, partition plate metope, the general gypsum mortar of surface layer whitewash gypsum or 1:1 that adopts is wiped one's face, and thickness generally at 3 ∽ 5 ㎜, then scrapes one deck gesso or water proof putty.

(3) Graphene adds to inside brushing gypsum by laboratory, and has carried out experimental data contrast, and its data are as following table three:

Table three

The present invention, by the restriction of above-mentioned embodiment, change, the modification done, substitutes, combines, simplifies under other any does not deviate from spirit of the present invention and principle, all should be equivalent substitute mode, is included within protection scope of the present invention.

Claims (2)

1. an inner wall of building brushing gypsum; it is characterized in that; described brushing gypsum with semi-hydrated gypsum gelling material for base-material; with glass bead, calcium powder, yellow ground, Mierocrystalline cellulose, calcium formiate, starch, retardant for additional materials; take Graphene as additive; the weight proportion of above-mentioned each component is: semi-hydrated gypsum gelling material 40-45%; glass bead 5-6%; calcium powder 5-6%, yellow ground 42-47%, Mierocrystalline cellulose 0.05-0.06%; calcium formiate 0.4-0.5%; starch 0.05-0.06%, retardant 0.05-0.06%, Graphene 1.5-2%.

2. a technical process for inner wall of building brushing gypsum as claimed in claim 1, is characterized in that, comprise the following steps,

1) metope base treatment: metope substrate surface is cleaned out, body of wall stuff up a crack and wire casing are repaired, adopt same type of material process firmly smooth convexconcave part in metope basic unit and unreserved hole, integral wall surface evenness is less than 8mm, and verticality is less than 5mm;

2) linked network: adopt fiberglass gridding cloth to carry out crack resistence process in body of wall unlike material junction, grid cloth need be evened up, and both sides tower spreading degree is not less than 100cm, and adopt gypsum mortar point-like of the same race to cement, affixed points spacing is 300-500mm;

3) corner protector: adopt gypsum mortar of the same race to carry out corner protector construction, need increase metal protection corner bar separately to principal passage body of wall corner;

4) floating screed: first accomplish fluently control ash cake at body of wall two ends, then complete body of wall two ends floating screed according to ash cake condition, according to the floating screed that two ends complete, bracing wire completes other position floating screed of metope, and two muscle spacing are 1.2-1.5m, and floating screed is wide is 30-50 ㎜;

5) machine sprays, strikes off: brushing gypsum is adjusted to suitable consistency, spray gun is guided to move around fast in the horizontal direction with constant speed, evenly spray from top to bottom, coating thickness is higher than mark muscle 1mm, after spraying, when mortar is slightly received dry, adopt aluminium alloy scraper plate floating from lower to upper along mark muscle immediately, with the material scraped, recess is made up a deficiency;

6) head is received at skirt position: metope skirt part is carried out machinery simultaneously and plastered.