CN104803622A - Sintering-free lightweight aggregate and preparation method thereof - Google Patents
Sintering-free lightweight aggregate and preparation method thereof Download PDFInfo
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- CN104803622A CN104803622A CN201510192735.3A CN201510192735A CN104803622A CN 104803622 A CN104803622 A CN 104803622A CN 201510192735 A CN201510192735 A CN 201510192735A CN 104803622 A CN104803622 A CN 104803622A
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Abstract
The invention discloses sintering-free lightweight aggregate and a preparation method thereof. The preparation method comprises the following steps: the first step: uniformly mixing materials according to a raw material formula of the sintering-free lightweight aggregate, then, molding in a pelletizing tray to obtain material pellets, placing the material pellets in a water vapor atmosphere with the temperature of 50-60 DEG C, and curing to enable the material pellets to expand, wherein according to the raw material formula, the sintering-free lightweight aggregate comprises the following components: 50-60% of cement, 10-20% of glass bead, 0.1-0.5% of azodicarbonamide, and 4.5-29.9% of water; the second step: after the size of the material pellets is stable and the material pellets are hardened, dipping with a water glass solution with the modulus of 2-2.5, and air-drying, so as to obtain the sintering-free lightweight aggregate. According to the sintering-free lightweight aggregate prepared by the invention, the cylinder compressive strength is 4-6 MPa, the water absorption rate is 3-5%, no thermal equipment is used in the whole preparation process, and no obvious dust emission is realized.
Description
Technical field
The present invention relates to a kind of non-sintered light skeletal and preparation method thereof, belong to building material field.
Background technology
Light high strength concrete (HSLC) is one of developing direction of current world concrete technology, have high-strength light, good endurance, without alkali-aggregate reaction, the advantage such as volume stability is good, thermal and insulating performance is good.HSLC is widely used in the engineerings such as extra large work structures, Highrise buildings, Longspan Bridge and urban interchange by the U.S., Germany, Japan and other countries.
Sintered clay haydite, sintering flyash ceramic grain, sintering shale haydite etc. is mainly contained at present as preparing the most important starting material light skeletal of light high strength concrete, these light skeletals are all formed through oversintering by powder, Preparation equipment selects the small-sized rotary kiln that thermo-efficiency is low, pollutant discharge amount is large mostly, and this runs in the opposite direction with the Macroscopic Strategy of the Sustainable development of country.The same with photovoltaic products, product is energy-conserving and environment-protective, but preparation process is but highly energy-consuming, high pollution.
In order to solve process contamination problem prepared by existing light skeletal, the present invention proposes a kind of preparation method not using kiln, and facility investment is low, and energy consumption is low, and whole preparation process hardly environment produces any load.
Summary of the invention
The object of the invention is to provide a kind of non-sintered light skeletal and preparation method thereof.
For achieving the above object, the first technical scheme that the present invention adopts is: a kind of non-sintered light skeletal, and the composition of raw materials of described non-sintered light skeletal comprises the material of following masses percentage composition:
Cement 50 ~ 60%;
Glass microballon 10 ~ 20%;
Cellmic C 121 0.1 ~ 0.5%;
Water 4.5 ~ 29.9%.
Preferred technical scheme is: described cement selection grade is the ordinary Portland cement of 52.5.
For achieving the above object, the second technical scheme that the present invention adopts is: a kind of preparation method of non-sintered light skeletal, comprises the following steps:
The first step: material mixing is even according to the composition of raw materials of non-sintered light skeletal, then shapingly in pan-pelletizer obtains pellet, and the water vapour atmosphere maintenance next described pellet being placed in 50 ~ 60 DEG C makes described pellet expand; Described composition of raw materials comprises the material of following masses percentage composition:
Cement 50 ~ 60%;
Glass microballon 10 ~ 20%;
Cellmic C 121 0.1 ~ 0.5%;
Water 4.5 ~ 29.9%;
Second step: when after pellet volume stability also sclerosis, is the water glass solution dipping of 2 ~ 2.5 with modulus, namely obtains non-sintered light skeletal after drying.
Preferred technical scheme is: described cement selection grade is the ordinary Portland cement of 52.5.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
The cylindrical compress strength of the non-sintered light skeletal that the present invention obtains is 4 ~ 6MPa, and water-intake rate is 3 ~ 5%, and whole preparation process does not use any Thermal Equipment, and does not have obvious dust discharge.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment one: a kind of non-sintered light skeletal and preparation method thereof.
A preparation method for non-sintered light skeletal, comprises the following steps:
The first step: material mixing is even according to the composition of raw materials of non-sintered light skeletal, then shapingly in pan-pelletizer obtains pellet, and the water vapour atmosphere maintenance next described pellet being placed in 50 ~ 60 DEG C makes described pellet expand; Described composition of raw materials comprises the material of following masses percentage composition:
Cement 55%;
Glass microballon 15%;
Cellmic C 121 0.1;
Water 29.9%;
Second step: when after pellet volume stability also sclerosis, is the water glass solution dipping of 2 ~ 2.5 with modulus, namely obtains non-sintered light skeletal after drying.
Embodiment two: a kind of non-sintered light skeletal and preparation method thereof.
A preparation method for non-sintered light skeletal, comprises the following steps:
The first step: material mixing is even according to the composition of raw materials of non-sintered light skeletal, then shapingly in pan-pelletizer obtains pellet, and the water vapour atmosphere maintenance next described pellet being placed in 50 ~ 60 DEG C makes described pellet expand; Described composition of raw materials comprises the material of following masses percentage composition:
Cement 50%;
Glass microballon 20%;
Cellmic C 121 0.5%;
Water 29.5%;
Second step: when after pellet volume stability also sclerosis, is the water glass solution dipping of 2 ~ 2.5 with modulus, namely obtains non-sintered light skeletal after drying.
Described cement selection grade is the ordinary Portland cement (P.O.52.5 cement) of 52.5.
Embodiment three: a kind of non-sintered light skeletal and preparation method thereof.
A preparation method for non-sintered light skeletal, comprises the following steps:
The first step: material mixing is even according to the composition of raw materials of non-sintered light skeletal, then shapingly in pan-pelletizer obtains pellet, and the water vapour atmosphere maintenance next described pellet being placed in 50 ~ 60 DEG C makes described pellet expand; Described composition of raw materials comprises the material of following masses percentage composition:
Cement 60%;
Glass microballon 20%;
Cellmic C 121 0.3%;
Water 19.7%;
Second step: when after pellet volume stability also sclerosis, is the water glass solution dipping of 2 ~ 2.5 with modulus, namely obtains non-sintered light skeletal after drying.
Preferred technical scheme is: described cement selection grade is the ordinary Portland cement of 52.5.
Embodiment four: a kind of non-sintered light skeletal and preparation method thereof
A preparation method for non-sintered light skeletal, comprises the following steps:
The first step: material mixing is even according to the composition of raw materials of non-sintered light skeletal, then shapingly in pan-pelletizer obtains pellet, and the water vapour atmosphere maintenance next described pellet being placed in 50 ~ 60 DEG C makes described pellet expand; Described composition of raw materials comprises the material of following masses percentage composition:
Cement 59%;
Glass microballon 18%;
Cellmic C 121 0.2%;
Water 22.8%;
Second step: when after pellet volume stability also sclerosis, is the water glass solution dipping of 2 ~ 2.5 with modulus, namely obtains non-sintered light skeletal after drying.
Preferred technical scheme is: described cement selection grade is the ordinary Portland cement of 52.5.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1. a non-sintered light skeletal, is characterized in that: the composition of raw materials of described non-sintered light skeletal comprises the material of following masses percentage composition:
Cement 50 ~ 60%;
Glass microballon 10 ~ 20%;
Cellmic C 121 0.1 ~ 0.5%;
Water 4.5 ~ 29.9%.
2. non-sintered light skeletal according to claim 1, is characterized in that: described cement selection grade is the ordinary Portland cement of 52.5.
3. a preparation method for non-sintered light skeletal, is characterized in that: comprise the following steps:
The first step: material mixing is even according to the composition of raw materials of non-sintered light skeletal, then shapingly in pan-pelletizer obtains pellet, and the water vapour atmosphere maintenance next described pellet being placed in 50 ~ 60 DEG C makes described pellet expand; Described composition of raw materials comprises the material of following masses percentage composition:
Cement 50 ~ 60%;
Glass microballon 10 ~ 20%;
Cellmic C 121 0.1 ~ 0.5%;
Water 4.5 ~ 29.9%;
Second step: when after pellet volume stability also sclerosis, is the water glass solution dipping of 2 ~ 2.5 with modulus, namely obtains non-sintered light skeletal after drying.
4. preparation method according to claim 3, is characterized in that: described cement selection grade is the ordinary Portland cement of 52.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192735.3A CN104803622A (en) | 2015-04-22 | 2015-04-22 | Sintering-free lightweight aggregate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192735.3A CN104803622A (en) | 2015-04-22 | 2015-04-22 | Sintering-free lightweight aggregate and preparation method thereof |
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| Publication Number | Publication Date |
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| CN104803622A true CN104803622A (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510192735.3A Pending CN104803622A (en) | 2015-04-22 | 2015-04-22 | Sintering-free lightweight aggregate and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617107A (en) * | 2012-04-01 | 2012-08-01 | 浙江大学宁波理工学院 | Building silt soil non-sintered ceramic aggregate and preparation method thereof |
| CN104261757A (en) * | 2014-09-10 | 2015-01-07 | 江苏名和集团有限公司 | Sintering-free lightweight aggregate and preparation method thereof |
-
2015
- 2015-04-22 CN CN201510192735.3A patent/CN104803622A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617107A (en) * | 2012-04-01 | 2012-08-01 | 浙江大学宁波理工学院 | Building silt soil non-sintered ceramic aggregate and preparation method thereof |
| CN104261757A (en) * | 2014-09-10 | 2015-01-07 | 江苏名和集团有限公司 | Sintering-free lightweight aggregate and preparation method thereof |
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Application publication date: 20150729 |
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| RJ01 | Rejection of invention patent application after publication |