CN1526485A - Recovering method of waste concrete and use of recovered material - Google Patents
Recovering method of waste concrete and use of recovered material Download PDFInfo
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- CN1526485A CN1526485A CNA031248462A CN03124846A CN1526485A CN 1526485 A CN1526485 A CN 1526485A CN A031248462 A CNA031248462 A CN A031248462A CN 03124846 A CN03124846 A CN 03124846A CN 1526485 A CN1526485 A CN 1526485A
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Abstract
The recovering process of waste concrete includes sieving, crushing and deposition to eliminate the coarse aggregate in waste concrete; absorption with water absorbing device or material to eliminate excessive water from waste concrete; adding lime powder in 0.5% of waste concrete weight to absorb the excessive water; mixing with proper amount of sand, stone powder or light aggregate via stirring; and shaping to produce cement brick, light cement brick, paving brick, heat isolating board, mixed mortar brick and other products. The present invention utilizes the waste concrete exhausted from cleaned stirring truck and saves water and cement, and the recovering process is unique, simple and economical.
Description
Technical field
The present invention relates to the purposes of a kind of construction material recovery method and reclaimed materials, the purposes of particularly a kind of waste concrete recovery method and reclaimed materials thereof.
Background technology
Flourish along with Building Trade in China, concrete is widely used in various buildings.Equipment such as truck mixer, concrete mixing plant and concrete batching and mixing tower all need often to carry out cleaning maintenance, a large amount of waste materials that produced when producing all be to topple over as surplus mud, causes significant wastage.And, because a large amount of concrete that a variety of causes causes are scrapped, then more strengthened the difficulty of concrete mixing plant processing waste concrete.For addressing the above problem, Chinese patent CN1335209A has announced a kind of waste concrete recovering system, it is that the waste concrete of being discharged when concrete mixing plant is cleaned trucd mixer places mixing drum, the method of utilizing water to clean is separated cement with sandstone, the cement mortar of separating precipitates in sedimentation basin, and the cement mortar part of post precipitation becomes the industrial water of cement water as commerical ready-mixed concrete through stirring; The clear water of a part of classified precipitation reclaims and is used for carwash, and the sandstone of separating is also used in the production of commerical ready-mixed concrete.There is following deficiency in the recovery method of this concrete waste material:
1. cement water only as the industrial water of commerical ready-mixed concrete, fail to do cement and use, and caused the waste of cement by wherein contained cement;
2. contained cement has sucked a large amount of unnecessary moisture content in the cement water, and the production that is used for commerical ready-mixed concrete can influence the product quality of commerical ready-mixed concrete,
3. if want to reclaim clear water, just must have precipitation cement can not really handle fully.
Summary of the invention
One of purpose of the present invention is to overcome the above-mentioned deficiency of prior art and a kind of waste concrete recovery method is provided.
The technical scheme that reaches above-mentioned purpose of the present invention is: the coarse aggregate of particle diameter in the waste concrete more than 9mm screened out or pulverize the back concentrate precipitation, get rid of clear water, be treated as the reclaimed materials that can condense and have certain intensity through suction again.
It is the fine grinding quicklime powder that need absorb a large amount of moisture content when adding an amount of aquation in waste concrete that suction is handled.
The addition of fine grinding quicklime powder is the 0.1-10% of waste concrete (weight).
Suction is handled and also can be adopted negative pressure suction method with unnecessary moisture content in the water absorber sucking-off waste concrete, perhaps uses unnecessary moisture content in the absorbent material sucking-off waste concrete.
Two of purpose of the present invention provides a kind of purposes of waste concrete reclaimed materials.
The technical scheme that reaches above-mentioned purpose of the present invention is: the waste concrete reclaimed materials is as the raw material of producing cement products such as various cement bricks, light cement brick, road brick, thermal insulation board, cement and lime combination ash sanded brick.
The present invention has scientificlly and effectively utilized the waste concrete of being discharged when cleaning trucd mixer owing to adopt as above technical scheme, has saved the water that separates cement and sandstone, has avoided the waste of cement.Reclaimed materials of the present invention can be made into cement and lime combination ash sanded brick; Also can mix an amount of sand as required, stone flour is made cement products such as various cement bricks, road brick, thermal insulation board; Also can mix an amount of lightweight aggregate as required and make various light cement bricks.The present invention reclaims and utilizes the technology of method novel unique, and equipment needed thereby is simple, and economic benefit and social benefit and environmental benefit are fairly obvious.
The specific embodiment
Embodiment one:
The first step, concrete mixing plant is cleaned the waste concrete that agitating lorry discharges is the iron sieve of 10MM by the aperture, after sifting out coarse aggregate wherein (because of coarse aggregate size excessive, be not suitable for brickmaking and other cement products, recyclable raw material) as concrete production, waste concrete is concentrated in the sedimentation basin precipitation, and (sedimentation basin need design at least two, in order to using in turn), and clear water entered clear water reserviors (the recyclable utilization of clear water is as car washing water);
Second step, with unnecessary moisture content in water absorber or the absorbent material sucking-off waste concrete, the fine grinding quicklime powder that adds waste concrete (weight) 0.5% more as required stirs, required this principle of a large amount of moisture content further absorbs the excessive moisture in the concrete when utilizing the quick lime aquation, the quick lime addition is so that no longer include unnecessary free water in the concrete, make it reach moistening loose condition (of surface), the requirement that maybe can satisfy brickmaking machine or other cement products former production technologies is as the criterion; Utilize the Ca (OH) that generates after the quick lime aquation simultaneously
2The Ca (OH) that is run off when replenishing the waste concrete bath
2, make the concrete can be at Ca (OH)
2Normal reaction in the full cyclization border;
The 3rd goes on foot, mixes as required an amount of sand, stone flour after the mixer stirring when adding fine grinding quicklime powder, make cement products such as various cement bricks, road brick, thermal insulation board by former; Also can when adding fine grinding quicklime powder, mix an amount of lightweight aggregate as required after mixer stirs, make various light cement bricks by former.
Embodiment two:
The first step, with concrete mixing plant clean coarse aggregate in the waste concrete that agitating lorry discharges pulverize the back (because of coarse aggregate size excessive, be not suitable for brickmaking and other cement products), (sedimentation basin need design at least two to concentrate on the interior precipitation of sedimentation basin, in order to using in turn), and clear water entered clear water reserviors, the recyclable utilization of clear water is as car washing water;
Second fine grinding quicklime powder that goes on foot, adds as required waste concrete (weight) 5% stirs, this principle of required a large amount of moisture content absorbs the excessive moisture in the waste concrete when utilizing the quick lime aquation, the quick lime addition is so that no longer include unnecessary free water in the concrete, make it reach moistening loose condition (of surface), the requirement that maybe can satisfy the brickmaking machine production technology is as the criterion; Utilize the Ca (OH) that generates after the quick lime aquation simultaneously
2The Ca (OH) that is run off when replenishing the waste concrete bath
2, make the concrete can be at Ca (OH)
2Normal reaction in the full cyclization border;
The 3rd goes on foot, mixes as required an amount of sand, stone flour after the mixer stirring when adding fine grinding quicklime powder, make cement and lime combination ash sanded brick by former.
The present invention produced when utilizing mixing plant to clean agitating lorry because of the too high waste concrete that can not condense of water content, handle sucking-off excessive moisture wherein through the sedimentation basin precipitation and by suction, add an amount of fine grinding quicklime powder again, the principle that needs a large amount of moisture content when utilizing the quick lime aquation, excessive moisture in the further sucking-off waste concrete, make it reach moistening loose condition (of surface), and can satisfy the requirement of production technology.Utilize its hyrate Ca (OH) simultaneously
2The Ca (OH) that is lost when replenishing the waste concrete bath
2, make the waste concrete can be at Ca (OH)
2Full cyclization border in normally carry out chemical reaction, to reduce the waste concrete ratio of mud is technical foundation, realize that waste concrete can condense and have certain intensity, finally reach the purpose of recycling, its reclaimed materials can be used as the raw material of cement products such as producing various cement bricks, light cement brick, road brick, thermal insulation board.Its method is simple and efficient to handle, and equipment is simple, and economic benefit is huge.
The present invention is through the concrete mixing plant practical application, and first month just with 100M
3Waste material become 10000 yuan product; Because its equipment is simple, easy easy and simple to handle is turned waste into wealth again, thus improved the economic benefit of mixing plant greatly, and played good environment protecting.The popularization of present technique will be made huge contribution for the building cause of country.
Claims (8)
1, a kind of waste concrete recovery method is characterized in that the coarse aggregate of particle diameter in the waste concrete more than 9mm screened out or pulverize the back concentrates precipitation, gets rid of clear water, is treated as the reclaimed materials that can condense and have certain intensity through suction again.
2, waste concrete recovery method according to claim 1, it is characterized in that absorbing water, to handle be the fine grinding quicklime powder that need absorb a large amount of moisture content when adding an amount of aquation in waste concrete.
3, waste concrete recovery method according to claim 1 and 2, the addition that it is characterized in that fine grinding quicklime powder is the 0.1-10% of waste concrete weight.
4, waste concrete recovery method according to claim 1 and 2 is characterized in that absorbing water handling and also can adopt negative pressure suction method with unnecessary moisture content in the water absorber sucking-off waste concrete, perhaps uses unnecessary moisture content in the absorbent material sucking-off waste concrete.
5, waste concrete recovery method according to claim 3 is characterized in that absorbing water handling and also can adopt negative pressure suction method with unnecessary moisture content in the water absorber sucking-off waste concrete, perhaps uses unnecessary moisture content in the absorbent material sucking-off waste concrete.
6, a kind of purposes of waste concrete reclaimed materials is characterized in that as the raw material of producing cement products such as various cement bricks, light cement brick, road brick, thermal insulation board, cement and lime combination ash sanded brick.
7, the purposes of waste concrete reclaimed materials according to claim 6 is characterized in that mixing as required an amount of sand, stone flour after mixer stirs, and makes cement products such as various cement bricks, road brick, thermal insulation board by former; Also can when adding fine grinding quicklime powder, mix an amount of lightweight aggregate as required after mixer stirs, make various light cement bricks by former.
8, the purposes of waste concrete reclaimed materials according to claim 6 is characterized in that mixing as required an amount of sand, stone flour after mixer stirs, and makes cement and lime combination ash sanded brick by former.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124846 CN1290630C (en) | 2003-09-18 | 2003-09-18 | Recovering method of waste concrete and use of recovered material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124846 CN1290630C (en) | 2003-09-18 | 2003-09-18 | Recovering method of waste concrete and use of recovered material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1526485A true CN1526485A (en) | 2004-09-08 |
| CN1290630C CN1290630C (en) | 2006-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03124846 Expired - Fee Related CN1290630C (en) | 2003-09-18 | 2003-09-18 | Recovering method of waste concrete and use of recovered material |
Country Status (1)
| Country | Link |
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| CN (1) | CN1290630C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332905C (en) * | 2005-03-10 | 2007-08-22 | 长江大学 | Method for producing steam-pressing silicate products by waste concrete |
| CN100391632C (en) * | 2005-07-05 | 2008-06-04 | 武汉理工大学 | Waste concrete regenerating and utilizing method |
| CN100398214C (en) * | 2006-06-01 | 2008-07-02 | 武汉理工大学 | Waste concrete component separating method |
| CN102060485A (en) * | 2010-12-02 | 2011-05-18 | 济南大学 | Cement concrete, and preparation method and recycling method thereof |
| CN110451872A (en) * | 2019-09-17 | 2019-11-15 | 中国十九冶集团有限公司 | The method of mixing plant waste residue production concrete and obtained concrete |
-
2003
- 2003-09-18 CN CN 03124846 patent/CN1290630C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332905C (en) * | 2005-03-10 | 2007-08-22 | 长江大学 | Method for producing steam-pressing silicate products by waste concrete |
| CN100391632C (en) * | 2005-07-05 | 2008-06-04 | 武汉理工大学 | Waste concrete regenerating and utilizing method |
| CN100398214C (en) * | 2006-06-01 | 2008-07-02 | 武汉理工大学 | Waste concrete component separating method |
| CN102060485A (en) * | 2010-12-02 | 2011-05-18 | 济南大学 | Cement concrete, and preparation method and recycling method thereof |
| CN110451872A (en) * | 2019-09-17 | 2019-11-15 | 中国十九冶集团有限公司 | The method of mixing plant waste residue production concrete and obtained concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1290630C (en) | 2006-12-20 |
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