CN105837144A - Non-bearing deposited-silt autoclaved sand-lime brick and preparation method thereof - Google Patents
Non-bearing deposited-silt autoclaved sand-lime brick and preparation method thereof Download PDFInfo
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- CN105837144A CN105837144A CN201610153749.9A CN201610153749A CN105837144A CN 105837144 A CN105837144 A CN 105837144A CN 201610153749 A CN201610153749 A CN 201610153749A CN 105837144 A CN105837144 A CN 105837144A
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- Prior art keywords
- sand
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- lime
- silt
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/12—Hydraulic lime
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a non-bearing deposited-silt autoclaved sand-lime brick and a preparation method thereof. Each 100 parts by weight of the brick comprises the following raw materials: 9 to 12 parts by weight of quicklime, 35 to 91 parts by weight of deposited silt in Yangtze River and 0 to 53 parts of construction waste. The autoclaved sand-lime brick prepared from the above-mentioned raw materials has the advantage of reduced production cost since the raw materials are few in variety and easily available; and since a great amount of deposited silt and construction waste are doped, solid waste are consumed, waste of resources is reduced, environmental pollution is mitigated, and the purposes of energy conservation, emission reduction and development of circular economy are achieved. The autoclaved sand-lime brick prepared in the invention has compressive strength reaching the strength grade of MU10; and after anti-freezing, the brick has strength loss of less than 20%, quality loss of less than 2.0%, a softening coefficient of no less than 0.85 and a shrinking percentage of less than 0.040%, completely meeting all the requirements on technical indexes of the grade MU10 prescribed in local standard--Technical Requirements on Non-bearing Autoclaved Sand-lime Perforated Brick, of Shanghai, China.
Description
Technical field
The present invention relates to solid waste resource recovery and utilize technology and building material technical field, refer specifically to
A kind of steam pressure of the building non-weight bearing area more than damp-proof layer utilizing silt sand and building waste to prepare
Dinas brickes and preparation method thereof.
Background technology
Region, entrance of Changjiang River, because of channel maintenance, the most all can produce substantial amounts of dredging silt sand, except carrying out enclosing sea
Making extraterrestrial, most dredging silt sand is all taken as garbage to carry out off-lying sea and abandons.This processing mode
Not only Financial cost is high, and can cause the waste of resource.Meanwhile, Process of Urban Development produces greatly
The dregs of amount, mud, the building waste such as concrete, old concrete therein mainly by broken,
It is sieved into regeneration aggregate to reapply, and recycled fine aggregate often powder content is relatively big, utilizes difficulty big.
But SiO in both solid waste2Content is the highest, can meet " silicate building products use
Sand " requirement of JC/T 622-2009.
For a long time, clay brick because gathering materials on the spot, low price, durable in use, the moisture absorption, cracking resistance
Etc. advantage, China's materials for wall product occupies dominant position, but the production of clay brick and use
Also exist ruin field fetch earth, the problems such as high energy consumption and environmental pollution, in recent years, country puts into effect
A series of policies, limit or forbid clay brick industry, encourage development non-clay novel wall material.Steam
Pressure Dinas brickes is because energy consumption is less, environmental pollution is little, it has also become mainly substitute the novel of clay brick
One of materials for wall.Autoclaved lime-sand brick is with sand, Calx as primary raw material, prepares through blank, suppresses
Molding, steam press maintenance.Therefore, if by deposited sand in Yangtze River and construction refuse resource comprehensive utilization
With, substitute natural sand and prepare autoclaved lime-sand brick, considerable economic benefit can not only be created, also can reduce
The harm that environment is brought by they.
Summary of the invention
It is an object of the invention to provide a kind of autoclaved lime-sand brick, it is with solid waste silt sand and builds
Building refuse is primary raw material, and this Dinas brickes intensity meets Shanghai City provincial standard " non-bearing steam pressure sand-lime
Porous brick technology requires " MU10 strength grade requirement in (DB31/T 599-2012).
It is a further object of the present invention to provide the preparation method of this autoclaved lime-sand brick.
The object of the present invention is achieved like this:
A kind of non-bearing silt sand autoclaved lime-sand brick, by weight, every 100 parts of raw materials contain quick lime 9
Part～12 parts, deposited sand in Yangtze River 35 parts～91 parts, building waste 0 part～53 parts.
Described quick lime uses the quick lime of common building, and effectively (CaO+MgO) mass fraction should
>=65%, (CaO+MgO) mass fraction of burning answers≤5%；Quick lime must be the most levigate simultaneously,
Its 0.08mm square hole screen tails over answers≤15%, and it is strong that the character of quick lime and volume determine autoclaved lime-sand brick
The development potentiality of degree.
The SiO of described silt sand2Mass fraction >=65%, particle diameter ＜ 2.36mm.
Described building waste is to make after the decoration garbage based on Rhizoma Begoniae Willsonii, waste and old concrete and mortar crush
Become, particle diameter ＜ 2.36mm, containing silicon, aluminum matter composition and unhydrated water in these building waste granules
Mud clinker particles etc., have potential hydration activity.
SiO in described silt sand and building waste2Component is inert, under room temperature almost with in Calx
CaO Fails To Respond, but in certain saturated vapor, easily there is hydrothermal synthesis reaction in the two, is formed
There is the serial hydrated calcium silicate product of some strength.
The preparation method of above-mentioned autoclaved lime-sand brick, the steps include:
(1) weigh raw material mix homogeneously by proportioning raw materials, mixed process adds siccative total amount
The water of 7%～11%；
(2) step (1) gained compound is put into the hermetic container that temperature constant is 50 ± 2 DEG C to enter
Row digestion, digestion time is 24h, and to control postdigestive compound moisture content be 5%～9%；
(3) postdigestive compound is pressed, with the speed of 1～2kN/s, it is added
Pressure, pressing pressure 30～50kN, keep 15s after pressure is constant, then reduce pressure with the speed of 1～2kN/s；
(4) compressing adobe is put into still kettle and carries out maintenance, steam pressure intensification 2h, constant temperature 8h,
Cooling 2h, goes out still after cooling；Steam-cured Stress control is 1.2～1.5MPa, and temperature controls
190～205 DEG C.
The present invention uses the autoclaved lime-sand brick that above-mentioned raw material is made, and raw material types is few and the easiest
Obtain, reduce production cost；Meanwhile, large dosage make use of deposited sand in Yangtze River and building waste, dissolves solid
Body garbage, reduces the wasting of resources, alleviates the pollution to environment, reaches energy-saving and emission-reduction and development circulation
Economic purpose.Deposited sand in Yangtze River Dinas brickes comprcssive strength disclosed by the invention reaches MU10 strength grade,
Freeze proof rear loss of strength ＜ 20%, mass loss ＜ 2.0%, coefficient of softing >=0.85, shrinkage factor ＜
0.040%, comply fully with Shanghai City provincial standard " requirement of non-bearing high pressure steamed lime sand porous brick technology "
Whole technical requirements of MU10 grade in (DB31/T 599-2012).
The invention have the advantage that
(1) large dosage utilizes solid waste deposited sand in Yangtze River and building waste, and solid waste ratio is the highest
Up to 91%, alleviate environmental pollution, beneficially environmental protection and waste utilization；
(2) product of the present invention is compared with clay brick, and energy consumption is low, and reduces natural resources consumption；With
The products such as autoclave aerated concrete building block are compared, and shrink little, and performance is more excellent；
(3) the production low cost of the present invention, from heavy and light, has certain heat insulation function.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
In following example, quick lime is through levigate, and 0.08mm square hole screen tails over≤15%, the most effectively
(CaO+MgO) mass fraction >=65%, (CaO+MgO) mass fraction≤5% of burning；Building
Rubbish is categorized, the useless brick, waste concrete and the waste mortar that obtain etc. through broken sieve obtain 2.36mm with
Lower particulate matter；Silt sand picks up from the Changjiang river, screens out the granule of more than 2.36mm, SiO2Mass fraction >=65%.
Embodiment 1:
Take the raw material of following weight portion: quick lime 9 parts, deposited sand in Yangtze River 91 parts, building waste 0 part,
Prepare according to following steps:
(1) weigh raw material mix homogeneously by above-mentioned weight portion, mixed process adds siccative gross weight
The water of 7%；
(2) above-mentioned compound is put into the hermetic container that temperature constant is 50 ± 2 DEG C to digest,
Digestion time is 24h, and to control postdigestive compound moisture content be 5%；
(3) postdigestive compound is pressed, with the speed of 1～2kN/s, it is added
Pressure, pressing pressure 30kN, keep 15s after pressure is constant, then reduce pressure with the speed of 1～2kN/s.
(4) compressing adobe being put into still kettle and carry out maintenance, Stress control, at 1.2MPa, steams
Pressing intensification 2h to 192 DEG C, constant temperature 8h, 2h is to room temperature in cooling, goes out still after cooling.
Embodiment 2
Take the raw material of following weight portion: quick lime 12 parts, deposited sand in Yangtze River 35 parts, building waste 53 parts,
Prepare according to following steps:
(1) weigh raw material mix homogeneously by above-mentioned weight portion, mixed process adds siccative gross weight
The water of 11%；
(2) above-mentioned compound is put into the hermetic container that temperature constant is 50 ± 2 DEG C to digest,
Digestion time is 24h, and to control postdigestive compound moisture content be 7%；
(3) postdigestive compound is pressed, with the speed of 1～2kN/s, it is added
Pressure, pressing pressure 30kN, keep 15s after pressure is constant, then reduce pressure with the speed of 1～2kN/s；
(4) compressing adobe being put into still kettle and carry out maintenance, Stress control, at 1.2MPa, steams
Pressing intensification 2h to 192 DEG C, constant temperature 8h, 2h is to room temperature in cooling, goes out still after cooling.
Embodiment 3
Take the raw material of following weight portion: quick lime 12 parts, deposited sand in Yangtze River 35 parts, building waste 53 parts,
Prepare according to following steps:
(1) weigh raw material mix homogeneously by above-mentioned weight portion, mixed process adds siccative gross weight
The water of 11%；
(2) above-mentioned compound is put into the hermetic container that temperature constant is 50 ± 2 DEG C to digest,
Digestion time is 24h, and to control postdigestive compound moisture content be 9%；
(3) postdigestive compound is pressed, with the speed of 1～2kN/s, it is added
Pressure, pressing pressure 50kN, keep 15s after pressure is constant, then reduce pressure with the speed of 1～2kN/s.
(4) compressing adobe being put into still kettle and carry out maintenance, Stress control, at 1.5MPa, steams
Pressing intensification 2h to 203 DEG C, constant temperature 8h, 2h is to room temperature in cooling, goes out still after cooling.
Embodiment 4
Take the raw material of following weight portion: quick lime 11.5 parts, deposited sand in Yangtze River 53.5 parts, building waste 35
Part, prepare according to following steps:
(1) weigh raw material mix homogeneously by above-mentioned weight portion, mixed process adds siccative gross weight
The water of 9%；
(2) above-mentioned compound is put into the hermetic container that temperature constant is 50 ± 2 DEG C to digest,
Digestion time is 24h, and to control postdigestive compound moisture content be 6%；
(3) postdigestive compound is pressed, with the speed of 1～2kN/s, it is added
Pressure, pressing pressure 40kN, keep 15s after pressure is constant, then reduce pressure with the speed of 1～2kN/s.
(4) compressing adobe being put into still kettle and carry out maintenance, Stress control, at 1.3MPa, steams
Pressing intensification 2h to 196 DEG C, constant temperature 8h, 2h is to room temperature in cooling, goes out still after cooling.
The autoclaved lime-sand brick that the embodiment of the present invention 1, embodiment 2, embodiment 3, embodiment 4 prepare with
The common autoclaved lime-sand brick that certain company commercially available produces is compared, and performance is as shown in the table:
The intensity of the autoclaved lime-sand brick of embodiment 1-4 is higher than commercially available common steaming as can be seen from the above table
Pressure Dinas brickes, frost resistance and dry shrinkage are also superior to common autoclaved lime-sand brick, and product quality is high, cost
Low, there is good market prospect.
Above-described embodiment is only the preference of the present invention, is not intended to limit the present invention, all in the present invention
Principle within, done any equivalent substitute, modifications and variations, all in protection scope of the present invention
Within.
Claims (5)
1. a non-bearing silt sand autoclaved lime-sand brick, it is characterised in that by weight, every 100 parts
Raw material contains quick lime 9 parts～12 parts, deposited sand in Yangtze River 35 parts～91 parts, building waste 0 part～53 parts.
Non-bearing silt sand autoclaved lime-sand brick the most according to claim 1, it is characterised in that described life
Calx uses the quick lime of common building, and effectively (CaO+MgO) mass fraction answers >=65%, mistake
(CaO+MgO) mass fraction≤5% burnt；Quick lime is levigate to its 0.08mm square hole screen tail over≤
15%.
Non-bearing silt sand autoclaved lime-sand brick the most according to claim 1, it is characterised in that described silt
The SiO of sand2Mass fraction >=65%, particle diameter ＜ 2.36mm.
Non-bearing silt sand autoclaved lime-sand brick the most according to claim 1, it is characterised in that described in build
Building refuse is to make after the decoration garbage based on Rhizoma Begoniae Willsonii, waste and old concrete and mortar crush, particle diameter ＜
2.36mm。
5. the preparation method of a non-bearing silt sand autoclaved lime-sand brick, it is characterised in that comprise the following steps:
(1) weigh raw material mix homogeneously by proportioning raw materials, mixed process adds siccative total amount
The water of 7%～11%；
(2) step (1) gained compound is put into the hermetic container that temperature constant is 50 ± 2 DEG C to enter
Row digestion, digestion time is 24h, and to control postdigestive compound moisture content be 5%～9%；
(3) postdigestive compound is pressed, with the speed of 1～2kN/s, it is added
Pressure, pressing pressure 30～50kN, keep 15s after pressure is constant, then reduce pressure with the speed of 1～2kN/s；
(4) compressing adobe is put into still kettle and carries out maintenance, steam pressure intensification 2h, constant temperature 8h,
Cooling 2h, goes out still after cooling；Steam-cured Stress control is 1.2～1.5MPa, and temperature controls
190～205 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153749.9A CN105837144A (en) | 2016-03-17 | 2016-03-17 | Non-bearing deposited-silt autoclaved sand-lime brick and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153749.9A CN105837144A (en) | 2016-03-17 | 2016-03-17 | Non-bearing deposited-silt autoclaved sand-lime brick and preparation method thereof |
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| CN105837144A true CN105837144A (en) | 2016-08-10 |
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| CN201610153749.9A Pending CN105837144A (en) | 2016-03-17 | 2016-03-17 | Non-bearing deposited-silt autoclaved sand-lime brick and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276056A (en) * | 2021-12-21 | 2022-04-05 | 邯郸市建业建设工程质量检测有限公司 | Method for preparing autoclaved sand-lime brick by synergistic utilization of multiple solid wastes |
| CN116003093A (en) * | 2023-01-03 | 2023-04-25 | 申能环境科技有限公司 | Sludge solid waste regenerated building material product and preparation method and device thereof |
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|---|---|---|---|---|
| CN1686896A (en) * | 2005-04-21 | 2005-10-26 | 西安墙体材料研究设计院 | Sand lime bricks produced by using deposited sand in Yangtze River |
| CN101306929A (en) * | 2008-07-04 | 2008-11-19 | 华中科技大学 | Autoclaved Brick from high content construction garbage and production process thereof |
| CN103922679A (en) * | 2014-04-16 | 2014-07-16 | 浙江浦江江合新型建筑材料有限公司 | Autoclaved sand-lime bricks manufactured by using building waste materials and crystal glass solid waste and manufacturing method thereof |
-
2016
- 2016-03-17 CN CN201610153749.9A patent/CN105837144A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686896A (en) * | 2005-04-21 | 2005-10-26 | 西安墙体材料研究设计院 | Sand lime bricks produced by using deposited sand in Yangtze River |
| CN101306929A (en) * | 2008-07-04 | 2008-11-19 | 华中科技大学 | Autoclaved Brick from high content construction garbage and production process thereof |
| CN103922679A (en) * | 2014-04-16 | 2014-07-16 | 浙江浦江江合新型建筑材料有限公司 | Autoclaved sand-lime bricks manufactured by using building waste materials and crystal glass solid waste and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 北京土木建筑学会: "建筑工程", 《建设工程资料管理与填写范例丛书 第一版》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276056A (en) * | 2021-12-21 | 2022-04-05 | 邯郸市建业建设工程质量检测有限公司 | Method for preparing autoclaved sand-lime brick by synergistic utilization of multiple solid wastes |
| CN114276056B (en) * | 2021-12-21 | 2022-10-11 | 邯郸市建业建设工程质量检测有限公司 | Method for preparing autoclaved sand-lime bricks by synergistic utilization of multi-component solid wastes |
| CN116003093A (en) * | 2023-01-03 | 2023-04-25 | 申能环境科技有限公司 | Sludge solid waste regenerated building material product and preparation method and device thereof |
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Application publication date: 20160810 |
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