Light wallboard of desulfurated gypsum
(1) technical field under
The invention belongs to the technical field of building materials of gypsum, relating to a kind of is the Light trabs that main raw material(s) is produced by desulfurated plaster and light material.
(2) background technology
In recent years, along with the withdrawing from gradually of traditional materials for wall that with the clay solid brick is representative, frame structure building quietly rises in China, and more and more hot.Retaining wall is the chief component of frame structure building, in frame structure building, requires body of wall to have lightweight, performance such as heat insulation, sound insulation, shock-resistant, fire prevention.As the Light trabs of frame structure building retaining wall, obtain more concern because of adapting to industrialized requirement.
Desulfurated plaster is to carry out that desulfurizing and purifying is handled and the industry byproduct that obtains is a kind of trade waste with the flue gas that lime produces sulfurous fuels burning back, as not being used, not only needs fund and soil to build stockyard and contaminated environment.The main component of desulfurated plaster is a calcium sulphate dihydrate, and purity height, stable components, "dead" have gelling property through the desulfurated plaster after the calcination processing, and hydration and hardening body crystalline texture is tightr, has certain intensity.Utilize desulfurated plaster to produce light wall material, can significantly reduce the yield of the plaster of paris, help energy conservation, save the soil, and, help reducing the discharge value of sulfur dioxide, the protection environment for the waste disposal behind the means of flue gas desulfurization of power plant breaks a new path.But adopt existing technology, the Light trabs that utilizes desulfurated plaster to make, its performance does not reach instructions for use.
(3) summary of the invention
The present invention is in order to overcome the deficiency of above technology, provide a kind of desulfurated plaster that utilizes to be major ingredient, add a certain amount of auxiliary material, make have lightweight, heat insulation, sound insulation, intensity height, fire prevention, anti-ly damage by worms, the light wallboard of desulfurated gypsum of respiratory function etc., be a kind of environmental protection materials for wall.
The present invention realizes by following measure:
Light wallboard of desulfurated gypsum of the present invention, the desulfurated plaster of utilization after calcination processing made hollow light wall board for primary raw material, the desulfurization gypsum hollow Light trabs vertically have one row manhole, lateral strip is fluted, is to be made by the raw material of following weight portion:
100 parts in desulfurated plaster powder
Polystyrene foam particles 3-10 part
Flyash 30-80 part
Portland cement 1-5 part
Polyvinyl alcohol water solution 1-3 part of 8%;
Ratio of water to material 0.50-1.20.
Light wallboard of desulfurated gypsum of the present invention utilizes the desulfurated plaster after calcination processing to make foamed wall slab for primary raw material, and desulfurated plaster foamed wall slab lateral strip is fluted, is to be made by the raw material of following weight portion:
100 parts in desulfurated plaster powder
Polystyrene foam particles 3-10 part
Flyash 30-80 part
Portland cement 1-5 part
Polyvinyl alcohol water solution 1-3 part of 8%
Foamed Gypsum agent 0.5-5 part;
Ratio of water to material 0.50-1.20.
The preparation method of the Light trabs of the invention described above is: will be through desulfurated plaster powder, polystyrene foam particles, the flyash after the calcination processing, after Portland cement mixes, add the stirring of water and polyvinyl alcohol water solution and be slurry, the injection moulding mould, the slurry sclerosis back demoulding forms light wallboard of desulfurated gypsum.
The light wallboard of desulfurated gypsum that the present invention makes can be a hollow light wall board, also can be foamed wall slab.Hollow wall panel vertically has row's manhole, and number of openings is 5-10, and through-hole diameter is 30-80mm, alleviates own wt, and lateral strip is fluted, is convenient to building operations and installs.When making foamed wall slab, in slip, add a certain amount of Foamed Gypsum agent, no mold core pipe in the moulding form, directly moulding by casting.
The present invention utilizes through the desulfurated plaster after the calcination processing, do light filler with polystyrene foam particles, add a certain amount of flyash, Portland cement, polyvinyl alcohol water solution is made Light trabs, and properties of product meet or exceed state quality standard, and have lightweight, heat insulation, sound insulation, intensity height, fire prevention, anti-ly damage by worms, character such as respiratory function, be a kind of environmental protection materials for wall.
(4) description of drawings
Fig. 1 is the structural representation of desulfurization gypsum hollow Light trabs of the present invention.
Fig. 2 is the drawing in side sectional elevation of desulfurization gypsum hollow Light trabs of the present invention.
Fig. 3 is the structural representation of desulfurated plaster foamed wall slab of the present invention.
Fig. 4 is the drawing in side sectional elevation of desulfurated plaster foamed wall slab of the present invention.
Among the figure, 1 is the desulfurization gypsum hollow Light trabs, and 2 is the vertical circular through hole, and 3 is lateral groove, and 4 is the desulfurated plaster foamed wall slab, and 5 is lateral groove.
(5) specific embodiment
Embodiment one
As depicted in figs. 1 and 2, be structural representation of the present invention, there are 6 vertical circular through holes 2 inside of desulfurization gypsum hollow Light trabs 1, and there are two lateral groove 3 both sides, are used to install and use.Be with desulfurated plaster powder, polystyrene foam particles, flyash through calcination processing, Portland cement is that raw material mixes in proportion, add the stirring of water and polyvinyl alcohol water solution and be slurry, be poured in the mould of 6 core pipes, extract the mold core pipe after the slurry initial set out, make after the demoulding after slurry hardens fully.Desulfurization gypsum hollow Light trabs of the present invention is to be made by the raw material of following weight portion:
100 parts in desulfurated plaster powder
8 parts of polystyrene foam particles
70 parts in flyash
4 parts of Portland cements
3 parts of 8% polyvinyl alcohol water solutions;
Ratio of water to material 1.10.
Desulfurization gypsum hollow Light trabs technical performance test result such as table 1.
Table 1
Interventions Requested |
Unit |
Measured data |
The result |
Surface density |
kg/m
2 |
43 |
Qualified |
Drying shrinkage value |
mm/m |
0.2 |
Qualified |
The bending resistance rupture load |
N |
1000 |
Qualified |
Shock resistance |
3 times (30kg, 0.5m) |
No through check |
Qualified |
The single-point hanging force |
800N,24h |
No through check |
Qualified |
Flammability |
Non-combustible |
Non-combustible |
Qualified |
Embodiment two:
The wallboard of present embodiment and embodiment one are basic identical, and its raw material proportioning is:
100 parts in desulfurated plaster powder
4 parts of polystyrene foam particles
40 parts in flyash
2 parts of Portland cements
1 part of 8% polyvinyl alcohol water solution;
Ratio of water to material 0.85.
Desulfurization gypsum hollow Light trabs technical performance test result such as table 2.
Table 2
Interventions Requested |
Unit |
Measured data |
The result |
Surface density |
kg/m
2 |
41 |
Qualified |
Drying shrinkage value |
mm/m |
0.2 |
Qualified |
The bending resistance rupture load |
N |
1200 |
Qualified |
Shock resistance |
3 times (30kg, 0.5m) |
No through check |
Qualified |
The single-point hanging force |
800N,24h |
No through check |
Qualified |
Flammability |
Non-combustible |
Non-combustible |
Qualified |
Embodiment three
As shown in Figure 3 and Figure 4, be structural representation of the present invention, the both sides of desulfurated plaster foamed wall slab 4 are lateral groove 5, are used to install and use.The desulfurated plaster foamed wall slab, with desulfurated plaster powder, polystyrene foam particles, flyash through calcination processing, Portland cement is that raw material mixes in proportion, adding water and polyvinyl alcohol water solution stirs to behind the slurry, add a certain amount of Foamed Gypsum agent, no mold core pipe in the moulding form, direct moulding by casting is to be made by the raw material of following weight portion:
100 parts in desulfurated plaster powder
5 parts of polystyrene foam particles
70 parts in flyash
5 parts of Portland cements
2 parts of 8% polyvinyl alcohol water solutions
2 parts of Foamed Gypsum agent;
Ratio of water to material 0.90.
Desulfurated plaster foamed wall slab technical performance test result such as table 3.
Table 3
Interventions Requested |
Unit |
Measured data |
The result |
Surface density |
kg/m
2 |
44 |
Qualified |
Drying shrinkage value |
mm/m |
0.3 |
Qualified |
The bending resistance rupture load |
N |
1300 |
Qualified |
Shock resistance |
3 times (30kg, 0.5m) |
No through check |
Qualified |
The single-point hanging force |
800N,24h |
No through check |
Qualified |
Flammability |
Non-combustible |
Non-combustible |
Qualified |
Embodiment four:
Embodiment four and embodiment three are basic identical, and its proportion of raw materials is:
100 parts in desulfurated plaster powder
2 parts of polystyrene foam particles
50 parts in flyash
2 parts of Portland cements
4 parts of 8% polyvinyl alcohol water solutions
5 parts of Foamed Gypsum agent;
Ratio of water to material 0.80.
The The performance test results of desulfurated plaster foamed wall slab sees Table 4
Table 4
Interventions Requested |
Unit |
Measured data |
The result |
Surface density |
kg/m
2 |
43 |
Qualified |
Drying shrinkage value |
mm/m |
0.3 |
Qualified |
The bending resistance rupture load |
N |
1400 |
Qualified |
Shock resistance |
3 times (30kg, 0.5m) |
No through check |
Qualified |
The single-point hanging force |
800N,24h |
No through check |
Qualified |
Flammability |
Non-combustible |
Non-combustible |
Qualified |