A kind of preparation method of the steaming-free air-adding brick based on industry, agricultural and building waste
Technical field
The invention belongs to building material fields, and in particular to a kind of steaming-free air-adding based on industry, agricultural and building waste
The preparation method of brick.
Background technology
With the fast development of city-building, various building wastes as waste residue soil, broken brick, discarded concrete, be scattered
Mortar, a small amount of steel, timber, glass, plastics and packaging material etc. sharply increase, and the stacking of building waste not only occupies
A large amount of soils destroy soil and water source, can also contaminated soil and water source, larger shadow is caused to ecological environment and social economy
It rings, is unfavorable for the sustainable development of construction industry.
The main component of building waste is silicate, oxide, hydroxide, carbonate, sulfide and sulfate etc., is changed
It learns property relatively to stablize, hardness, wearability, toughness, frost resistance, water resistance etc. are relatively good, and performance is even better than clay, silty soil
Sand and rendzinas.Therefore, in recent years, the regeneration of building waste resource is studied very much, in addition to being used for engineering backfill, adding
Gu soft soil foundation pushes away mountain and makes scape, outside roadbase, it is also used as raw material and prepares regeneration concrete, cement mortar and brick material.
Brick material can be divided into fired brick and non-sintered brick according to the difference of production technology, wherein non-sintered building refuse brick be with
Building waste is primary raw material, after second-time breakage is sieved, using a small amount of cementing material as auxiliary agent, and agitated compression moulding, from
So maintenance or steam press maintenance after become brick material, especially non-fired and non-steamed bricks both be not necessarily to roasting, without with steam for maintenance, more
It is environmentally protective.A kind of air-entraining concrete brick without team-pressing and its processing method disclosed in Chinese patent CN 1597599A, the brick is by water
Mud, flyash, spun yarn, water, gypsum, aluminium powder are as primary raw material, then are aided with sodium chloride, calcium chloride, water-reducing agent, sodium sulphate, Soviet Union
It beats, waterproofing agent and sulfanole, through pouring, 40-60 DEG C is heating and curing, and steam or water seasoning obtain non-evaporating pressure cellular concrete
Brick, the concrete brick finishing coat process of steam pressure prepared by this method, but there is still a need for steam curings.Chinese patent CN
102617076B is disclosed to produce non-evaporating curing concrete aerated insulation brick and its production method using building waste, contains in insulating brick
There are cement, building waste aggregate, calcium oxide, calcium sulfate, carbamide, polyvinyl alcohol, hydroxypropyl methyl fiber, calcium carbonate, aluminium powder
Equal foaming agents and water are constituted, and conserve to obtain non-evaporating curing concrete heat preservation through dispensing, mixing, injection molding, solidification, plastic covering film greenhouse
Brick, the insulating brick is using building waste as aggregate, with the non-evaporating curing concrete aerated insulation brick of other raw material laminating productions such as cement.
Applied in non-evaporating foster insulating brick it is found that aggregate can be used as by building waste by the above-mentioned prior art, first
Building waste is only recycled, secondly the dosage of building waste is also little, it is difficult to largely improve the environment of building waste
Problem and economic value.
Invention content
The technical problem to be solved in the present invention is to provide it is a kind of based on industry, agricultural and building waste steaming-free air-adding brick,
The building waste being modified using polystyrene foaming granule, using the straw ash, paddy ash and bean dregs agricultural rubbish being modified through mud
Rubbish, then it is fine with cement, lime, flyash, slag, spent pulping liquor, NF aliphatic water reducing agents, sodium carbonate, sodium bicarbonate, polypropylene
Dimension mixing obtains the steaming-free air-adding brick based on industry, agricultural and building waste through pouring, curing, conserve.Base prepared by this method
In industry, agricultural and building waste steaming-free air-adding brick by building waste and agricultural waste after modified with industrial refuse and other
Auxiliary agent is mixed with to obtain, and this method fully utilizes various garbage, and is modified into row major to rubbish, improves the property of rubbish
Can, utilization rate is high, good in economic efficiency, and multiple material all has frothing function, can repeatedly be foamed in preparation process,
Keep the bubble in aerated bricks more and uniformly, can significantly add the heat-insulating property of brick material, have no effect on the mechanical performance of brick material.
In order to solve the above technical problems, the technical scheme is that:
A kind of preparation method of the steaming-free air-adding brick based on industry, agricultural and building waste, includes the following steps:
(1) concrete and brick slag mix, then mixed through separating twice after primary crush with polystyrene foaming granule
Aggregate is closed, heating stirring obtains modified building waste;
(2) by mud dry it is levigate after mix with straw ash, paddy ash and bean dregs, regrind into powder, obtain modification
Agricultural waste;
(3) modification agricultural waste prepared by the modified building rubbish and step (2) prepared step (1) mixes, dry to stir, then
Cement, lime, flyash, slag, spent pulping liquor, NF aliphatic water reducing agents, sodium carbonate, sodium bicarbonate, polypropylene fibre is added,
After mixing, water is added, after stirring evenly, pours into mold, pressurizes, heating curing is obtained based on industry, agricultural and building rubbish
The steaming-free air-adding brick of rubbish.
As a preferred embodiment of the above technical solution, in the step (1), concrete, brick slag and polystyrene foaming granule
Weight ratio is 1:1-1.5:0.2-0.4.
As a preferred embodiment of the above technical solution, in the step (1), the grain size for mixing aggregate is less than 5mm.
As a preferred embodiment of the above technical solution, in the step (1), the temperature of heating stirring is 40-60 DEG C.
As a preferred embodiment of the above technical solution, in the step (2), it is 0.05-0.5mm that mud, which dries levigate grain size,.
As a preferred embodiment of the above technical solution, in the step (2), mud, straw ash, paddy ash and bean dregs mass ratio
It is 1:0.5-0.8:0.4-0.6:0.5-0.7.
As a preferred embodiment of the above technical solution, in the step (3), the pressure of pressurization is 5-10MPa, time 5-
10min。
As a preferred embodiment of the above technical solution, in the step (3), heat-cured temperature is 70-90 DEG C, and the time is
30-60min。
Compared with prior art, the invention has the advantages that:
(1) contain in the steaming-free air-adding brick based on industry, agricultural and building waste prepared by the present invention and sent out through polystyrene
Granule modified building waste is steeped, polystyrene foaming granule is penetrated into the gap of building refuse concrete and brick material, and
Heated stirring promotes polystyrene foaming granule to carry out one step foaming, not only reduces the crushing difficulty of building waste, make to build
The particle smaller of building refuse, and be conducive to carry out second time of foaming in the forming process of aerated bricks, promote the equal of brick material bubble
Even property.
(2) in the steaming-free air-adding brick based on industry, agricultural and building waste prepared by the present invention containing being modified through mud
Agricultural waste, the ingredient in agricultural waste are straw ash, paddy ash and bean dregs, mud with straw ash, paddy is grey and bean dregs are wanted to tie
Closing has excellent gelatinization results, and the organic substance expanded by heating in agricultural waste can form bubble, advantageously forms uniformly
Stomata, advantageously reduce the quality of brick material, improve mechanical strength and heat insulation effect, reduce cost.
(3) contain industrial refuse fine coal in the steaming-free air-adding brick based on industry, agricultural and building waste prepared by the present invention
Ash, slag, spent pulping liquor, flyash, slag are all excellent cementitious materials, and spent pulping liquor is the waste of paper mill discharge, can
Using as foaming agent, then by mixed with cement, lime, NF aliphatic water reducing agents, sodium carbonate, sodium bicarbonate and polypropylene fibre
It closes, the comprehensive performance for improving aerated bricks.
(4) various rubbish are comprehensively utilized in the steaming-free air-adding brick based on industry, agricultural and building waste prepared by the present invention,
And according to the performance of rubbish, first rubbish is modified, then aerated bricks are compounded to form with other auxiliary agents, in the aerated bricks of preparation
Containing more and uniform bubble, aerated bricks it is light, heat insulation effect and mechanical strength are good, and fully utilize a variety of industry rubbish
Rubbish improves the performance of rubbish, improves economic value.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention will be described in detail, herein illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
Embodiment 1:
(1) in parts by mass, by 1 part of concrete and 1 part of brick slag after primary crush, the polystyrene with 0.2 part
Expanded beads mix, then obtain the mixing aggregate that grain size is less than 5mm through separating twice, and heating stirring obtains modified build at 40 DEG C
Building refuse.
(2) in parts by mass, 1 part of mud is dried into the particle that levigate formation grain size is 0.05mm, the stalk with 0.5 part
Ash, 0.4 part of paddy ash and the mixing of 0.5 part of bean dregs, regrind into powder, obtain modified agricultural waste.
(3) in parts by mass, 1 part of flyash, 0.3 part of slag and 2 parts of spent pulping liquor are mixed to form industrial refuse.
(4) in parts by mass, 20 parts of modified building rubbish and 10 parts of modification agricultural waste are mixed, it is dry to stir, then add
Enter 30 parts of cement, 5 parts of lime, 15 parts of industrial refuse, 1 part of NF aliphatic water reducing agents, 5 parts of sodium carbonate and bicarbonate
Sodium, 5 parts of polypropylene fibre are added 30 parts of water, after stirring evenly, pour into mold, pressurize at 5MPa after mixing
5min, heating curing 30min at 70 DEG C obtain the steaming-free air-adding brick based on industry, agricultural and building waste.
Embodiment 2:
(1) in parts by mass, by 1 part of concrete and 1.5 parts of brick slag after primary crush, the polyphenyl second with 0.4 part
Alkene expanded beads mix, then obtain the mixing aggregate that grain size is less than 5mm through separating twice, and heating stirring obtains modification at 60 DEG C
Building waste.
(2) in parts by mass, 1 part of mud is dried into the particle that levigate formation grain size is 0.5mm, the stalk with 0.8 part
Ash, 0.6 part of paddy ash and the mixing of 0.7 part of bean dregs, regrind into powder, obtain modified agricultural waste.
(3) in parts by mass, 1 part of flyash, 0.5 part of slag and 3 parts of spent pulping liquor are mixed to form industrial refuse.
(4) in parts by mass, 40 parts of modified building rubbish and 25 parts of modification agricultural waste are mixed, it is dry to stir, then add
Enter 60 parts of cement, 10 parts of lime, 30 parts of industrial refuse, 5 parts of NF aliphatic water reducing agents, 10 parts of sodium carbonate and carbonic acid
Hydrogen sodium, 10 parts of polypropylene fibre are added 50 parts of water, after stirring evenly, pour into mold after mixing, add at 10MPa
10min is pressed, heating curing 60min at 90 DEG C obtains the steaming-free air-adding brick based on industry, agricultural and building waste.
Embodiment 3:
(1) in parts by mass, by 1 part of concrete and 1.2 parts of brick slag after primary crush, the polyphenyl second with 0.3 part
Alkene expanded beads mix, then obtain the mixing aggregate that grain size is less than 5mm through separating twice, and heating stirring obtains modification at 45 DEG C
Building waste.
(2) in parts by mass, 1 part of mud is dried into the particle that levigate formation grain size is 0.1mm, the stalk with 0.6 part
Ash, 0.5 part of paddy ash and the mixing of 0.6 part of bean dregs, regrind into powder, obtain modified agricultural waste.
(3) in parts by mass, 1 part of flyash, 0.4 part of slag and 2.5 parts of spent pulping liquor are mixed to form industrial rubbish
Rubbish.
(4) in parts by mass, 25 parts of modified building rubbish and 15 parts of modification agricultural waste are mixed, it is dry to stir, then add
Enter 40 parts of cement, 7 parts of lime, 25 parts of industrial refuse, 3 parts of NF aliphatic water reducing agents, 7 parts of sodium carbonate and bicarbonate
Sodium, 8 parts of polypropylene fibre are added 35 parts of water, after stirring evenly, pour into mold, pressurize at 7MPa after mixing
6min, heating curing 45min at 75 DEG C obtain the steaming-free air-adding brick based on industry, agricultural and building waste.
Embodiment 4:
(1) in parts by mass, by 1 part of concrete and 1.3 parts of brick slag after primary crush, the polyphenyl second with 0.3 part
Alkene expanded beads mix, then obtain the mixing aggregate that grain size is less than 5mm through separating twice, and heating stirring obtains modification at 55 DEG C
Building waste.
(2) in parts by mass, 1 part of mud is dried into the particle that levigate formation grain size is 0.3mm, the stalk with 0.6 part
Ash, 0.4 part of paddy ash and the mixing of 0.5 part of bean dregs, regrind into powder, obtain modified agricultural waste.
(3) in parts by mass, 1 part of flyash, 0.5 part of slag and 3 parts of spent pulping liquor are mixed to form industrial refuse.
(4) in parts by mass, 35 parts of modified building rubbish and 15 parts of modification agricultural waste are mixed, it is dry to stir, then add
Enter 50 parts of cement, 5 parts of lime, 25 parts of industrial refuse, 2 parts of NF aliphatic water reducing agents, 6 parts of sodium carbonate and bicarbonate
Sodium, 8 parts of polypropylene fibre are added 40 parts of water, after stirring evenly, pour into mold, pressurize at 8MPa after mixing
8min, heating curing 50min at 85 DEG C obtain the steaming-free air-adding brick based on industry, agricultural and building waste.
Embodiment 5:
(1) in parts by mass, by 1 part of concrete and 1.5 parts of brick slag after primary crush, the polyphenyl second with 0.2 part
Alkene expanded beads mix, then obtain the mixing aggregate that grain size is less than 5mm through separating twice, and heating stirring obtains modification at 55 DEG C
Building waste.
(2) in parts by mass, 1 part of mud is dried into the particle that levigate formation grain size is 0.25mm, the stalk with 0.7 part
Ash, 0.6 part of paddy ash and the mixing of 0.5 part of bean dregs, regrind into powder, obtain modified agricultural waste.
(3) in parts by mass, 1 part of flyash, 0.5 part of slag and 2 parts of spent pulping liquor are mixed to form industrial refuse.
(4) in parts by mass, 20 parts of modified building rubbish and 15 parts of modification agricultural waste are mixed, it is dry to stir, then add
Enter 45 parts of cement, 5 parts of lime, 15 parts of industrial refuse, 2 parts of NF aliphatic water reducing agents, 7 parts of sodium carbonate and bicarbonate
Sodium, 8 parts of polypropylene fibre are added 45 parts of water, after stirring evenly, pour into mold, pressurize at 8MPa after mixing
10min, heating curing 60min at 70 DEG C obtain the steaming-free air-adding brick based on industry, agricultural and building waste.
Embodiment 6:
(1) in parts by mass, by 1 part of concrete and 1.5 parts of brick slag after primary crush, the polyphenyl second with 0.2 part
Alkene expanded beads mix, then obtain the mixing aggregate that grain size is less than 5mm through separating twice, and heating stirring obtains modification at 60 DEG C
Building waste.
(2) in parts by mass, 1 part of mud is dried into the particle that levigate formation grain size is 0.25mm, the stalk with 06 part
Ash, 0.4 part of paddy ash and the mixing of 0.7 part of bean dregs, regrind into powder, obtain modified agricultural waste.
(3) in parts by mass, 1 part of flyash, 0.3 part of slag and 2 parts of spent pulping liquor are mixed to form industrial refuse.
(4) in parts by mass, 35 parts of modified building rubbish and 15 parts of modification agricultural waste are mixed, it is dry to stir, then add
Enter 45 parts of cement, 7 parts of lime, 25 parts of industrial refuse, 5 parts of NF aliphatic water reducing agents, 10 parts of sodium carbonate and bicarbonate
Sodium, 6 parts of polypropylene fibre are added 45 parts of water, after stirring evenly, pour into mold, pressurize at 10MPa after mixing
8min, heating curing 40min at 75 DEG C obtain the steaming-free air-adding brick based on industry, agricultural and building waste.
The hole collection distribution for the steaming-free air-adding brick based on industry, agricultural and building waste that after testing, prepared by embodiment 1-6,
The result of porosity, mechanical strength and heat insulation effect is as follows:
|
Embodiment 1 |
Embodiment 2 |
Embodiment 3 |
Embodiment 4 |
Embodiment 5 |
Embodiment 6 |
Ratio (%) shared by hole less than 20nm |
76 |
80 |
81 |
79 |
83 |
81 |
Porosity (%) |
18.4 |
19.5 |
18.4 |
18.6 |
19.0 |
19.2 |
Compression strength is (MPa) |
3.9 |
4.2 |
4.0 |
4.1 |
3.9 |
4.1 |
Thermal coefficient (W/mk) |
0.91 |
0.84 |
0.88 |
0.87 |
0.89 |
0.86 |
Heat storage coefficient (W/m2·k) |
9.2 |
10.2 |
9.8 |
9.5 |
9.4 |
10.0 |
As seen from the above table, the present invention prepare based on industry, agricultural and building waste steaming-free air-adding brick hole more than and
Uniformly, mostly harmless hole, and mechanical strength and good heat insulating.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.