CN101250051A

CN101250051A - Gypsum terrace material

Info

Publication number: CN101250051A
Application number: CNA2008100333540A
Authority: CN
Inventors: 傅旗康; 施金华
Original assignee: Shanghai Zhongxing (group) Co Ltd; ZHONGLU BUILDING MATERIAL CO Ltd SHANGHAI
Current assignee: Shanghai Zhongxing (group) Co Ltd; ZHONGLU BUILDING MATERIAL CO Ltd SHANGHAI
Priority date: 2008-01-31
Filing date: 2008-01-31
Publication date: 2008-08-27

Abstract

The invention relates to a gypsum floor material, belonging to floor material technical field, which uses gypsum as material to replace cement, with wide application in ground heating system. The gypsum floor material contains 50-64 wt% of desulfurized gypsum, 35-49 wt% of aggregate, 0.1-0.3 wt% of reinforcing agent, 0.1-0.2 wt% of methyl cellulose, 0.5-1.5 wt% of water reducer, 0.1-0.3 wt% of defoamer and 0.1-0.5 wt% of retarder. The invention has simpe application, which can automatically flow smoothly, eliminate empty drum, eliminate crack and improve flatness, with strong anti-segregation ability, uniform sclerotium structure distribution and the invention can skeep stable for long time. The invention has better heat and sound insulation functions, which can be used as floor material to eliminate cold feeling in winter, and the invention is not easy to caused deformation and can eliminate expansion joint in large-scale construction. The invention has low cost and environment friend property. The density of gypsum is lower than cement, to reduce the weight of room floor.

Description

Gypsum terrace material

Technical field

Gypsum terrace material of the present invention relates to a kind of floor material, and it is raw material that this material system adopts gypsum place of cement, and smooth, the protection and the insulation that are mainly used in ground heating system are conducted heat.

Background technology

At present, it is starting material that floor material adopts cement and sandstone mostly, adds the reagent that some improve performance again, such as water reducer, defoamer and retardant.Such as publication number is arranged is CN1872781A, name is called the Chinese patent of inorganic fine terrace material, the technical scheme that this patent adopts is, cement 50-100, sand 200-400, terra alba 200-400, water-ground limestone 200-400, talcum powder 200-400, diatomite in powder 200-400, with the auxiliary material that accounts for all material weight percent: polymer emulsion 10-30%, water reducer 0.7%, Mierocrystalline cellulose 0.1-0.4%.This technical scheme has overcome shortcomings such as terrace face cracking, dusting, a dirt to a certain extent, the progress of can yet be regarded as, but, this technical scheme material divides main raw material and auxiliary material (liquid), commercialized degree is not high, need the scene preparation to use, use is inconvenient, causes material performance generation in use fluctuation easily.

Simultaneously, along with China strengthens the prevention and control of air pollution dynamics, strengthen the control to sulfur dioxide emissions, the desulfurated plaster that the coal-fired plant flue gas desulfurization produces increases rapidly, a large amount of dischargings, and pile up like a mountain, as will not in time handling, will bring the pollution of environment.This shows how the Transformation Application desulfurated plaster is a big key issue that solves environmental pollution.

This patent just is being based on the consideration of above-mentioned two aspects, turns waste into wealth, and the depleted desulfurated plaster is used for the grown place terrace material.Both improved the performance of floor material, and can curb environmental pollution again, and with low cost.

Summary of the invention

Desulfurated plaster of the present invention technical problem to be solved is, at terrace material cost height, easy to crack, the imperfect deficiency of soundproof effect traditionally, provides a kind of with low cost, not easy to crack, heat insulation and floor material that soundproof effect is good.

In order to solve the problems of the technologies described above, the present invention adopts following technical proposal:

A kind of gypsum terrace material comprises desulfurated plaster, aggregate, toughener, methylcellulose gum, water reducer and retardant, and by weight percentage, each components contents is respectively:

Desulfurated plaster 50-64%

Aggregate 35-49%

Toughener 0.1-0.3%

Methylcellulose gum 0.1-0.2%

Water reducer 0.5-1.5%

Defoamer 0.1-0.3%

Retardant 0.1-0.5%.

The effect of toughener is a physicals of improving gypsum terrace material, the effect of water reducer, defoamer and retardant is to improve the construction technology condition, the effect of water reducer is to improve flowability, make water reducer fully mobile, become smooth, the effect of defoamer is the release that promotes bubble, avoid taking place hollowing and irregular, the effect of retardant is the delayed coagulation time, makes it have time enough fully mobile before solidifying, and makes surfacing, smooth.

On the technique scheme basis, described aggregate is natural sand or artificial sand.

On the technique scheme basis, described water reducer is a high efficiency water reducing agent.

On the technique scheme basis, described retardant is an inorganic retarder.Inorganic retarder is some inorganic salt, comprises zinc salt, pink salt, lead salt, silicofluoride, phosphoric acid salt (as: tripoly phosphate sodium STPP, sodium orthophosphate and acid salt thereof) etc.

Above-mentioned defoamer is meant: one, lower alcohol and ester class specifically comprise Virahol, butanols, tributyl phosphate etc.; Two, organic polar compound mainly refers to the tensio-active agent that some HLB values are lower, such as polyether surfactant, and cithrol etc.; Three, mineral oils and hydrophobic particle are such as metallic soap of stearic acid, polyureas; Four, silicone based, be activeconstituents mainly with the hydrophobicity silicone oil, add some other carrier surface promoting agent again and mix.

Above-mentioned high efficiency water reducing agent comprises naphthalenesulfonate formaldehyde condensation compound, sulfonated melamine compound condenses, sulfamate system, fatty family, modified cyanurotriamide and polycarboxylate based water reducer.

Technological merit of the present invention is as follows:

One, easy to use, during use, stir 3-5 minute form slurry at the scene, pour on the ground of completing heating coil, have extraordinary flowability, levelling automatically, and not hollowing, do not ftracture, planeness is good;

Two, have good anti-segregation ability, the hardenite structure distribution is even, can keep stable for a long time;

Three, have good heat insulation effect and soundproof effect;

Four, because the gypsum terrace thermal conductivity is significantly less than sand-cement slurry, even winter, pin did not have ice-cold sensation above stepping down in yet;

Five, be difficult for being out of shape because of temperature variation, large-area construction can not established the expansion joint;

Six, with low cost, the Transformation Application desulfurated plaster has good environmental-protection function;

Seven, the density of gypsum is significantly less than the density of cement, can alleviate house earth surface weight.

In above-mentioned technique effect particular embodiment such as the following table,

Technical indicator:

Project	Residences in Japan community gypsum terrace material	The ZL gypsum terrace material
Project	Residences in Japan community gypsum terrace material	The ZL gypsum terrace material	Degree of mobilization	≥190mm	≥200mm
Presetting period	〉=1 hour	〉=1 hour	Degree of mobilization	≥190mm	≥200mm
Presetting period	〉=1 hour	〉=1 hour	Final setting time	≤ 8 hours	≤ 8 hours
Ultimate compression strength	≥12MPa	≥15MPa	Final setting time	≤ 8 hours	≤ 8 hours
Ultimate compression strength	≥12MPa	≥15MPa	Cohesive strength	≥0.5MPa	≥0.5MPa

Embodiment

Embodiment 1

Desulfurated plaster 50%

Aggregate 48.5%

Toughener 0.15%

Methylcellulose gum 0.12%

Water reducer 0.88%

Defoamer 0.15%

Retardant 0.2%.

In the present embodiment, described aggregate is natural sand or artificial sand.

In the present embodiment, described water reducer is a high efficiency water reducing agent.

In the present embodiment, described retardant is organic retardant or inorganic retarder.

Gypsum terrace material main raw material of the present invention is the mixture of desulfurized gesso of flue gas, stopping composition, toughener, methylcellulose gum, water reducer, defoamer, retardant.Mix to stir to be poured on the used ground in 3 minutes at normal temperatures with water, allow its automatic levelling, have that cohesive force simple to operate, whole is strong, intensity good, do not shrink, do not ftracture, advantage such as good heat insulating.

Its using method is:

1, powder is poured in the bucket that is incorporated with quantitative clear water, fully stirred 3-5 minute with stirrer;

2, the slip of mixing is poured on the ground of completing heating tube, the besom of available hard or froth breaking cylinder are accelerated the speed of scattering of mortar, drive the bubble in the slip simultaneously away.

The best engineering time of gypsum terrace is 45 minutes.The thickness range of once constructing is the 1-60 millimeter.

Embodiment 2

In the present embodiment, by weight percentage, each components contents is respectively:

Desulfurated plaster 50%

Aggregate 48%

Toughener 0.25%

Methylcellulose gum 0.2%

Water reducer 1.2%

Defoamer 0.1%

Retardant 0.25%.

Other are with embodiment 1.

Embodiment 3

In the present embodiment, () counts by weight percentage, and each components contents is respectively:

Desulfurated plaster 51%

Stopping composition 47.5%

Toughener 0.15%

Methylcellulose gum 0.1%

Water reducer 0.8%

Defoamer 0.15%

Retardant 0.3%.

Other are with embodiment 1

Embodiment 4

Desulfurated plaster 52%

Aggregate 46.5%

Toughener 0.15%

Methylcellulose gum 0.12%

Water reducer 0.98%

Defoamer 0.15%

Retardant 0.1%.

Other are with embodiment 1.

Claims

1. a gypsum terrace material comprises desulfurated plaster, aggregate, toughener, methylcellulose gum, water reducer and retardant, and (%) counts by weight percentage, and each components contents is respectively:

Desulfurated plaster 50-64

Aggregate 35-49

Toughener 0.1-0.3

Methylcellulose gum 0.1-0.2

Water reducer 0.5-1.5

Defoamer 0.1-0.3

Retardant 0.1-0.5.

2. gypsum terrace material according to claim 1 is characterized in that: described aggregate is natural sand or artificial sand.

3. gypsum terrace material according to claim 1 is characterized in that: described water reducer is a high efficiency water reducing agent.

4. gypsum terrace material according to claim 3 is characterized in that: described high efficiency water reducing agent comprises a kind of or its combination in naphthalenesulfonate formaldehyde condensation compound, sulfonated melamine compound condenses, sulfamate system, fatty family and the polycarboxylate based water reducer.

5. gypsum terrace material according to claim 1 is characterized in that: described retardant is an inorganic retarder, comprises a kind of or its combination in zinc salt, pink salt, lead salt, silicofluoride, the phosphoric acid salt.

6. gypsum terrace material according to claim 5 is characterized in that: described phosphoric acid salt is tripoly phosphate sodium STPP, sodium orthophosphate and acid salt thereof.