CN112341074A - Waste slurry concrete and preparation method thereof - Google Patents
Waste slurry concrete and preparation method thereof Download PDFInfo
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- CN112341074A CN112341074A CN201910728435.0A CN201910728435A CN112341074A CN 112341074 A CN112341074 A CN 112341074A CN 201910728435 A CN201910728435 A CN 201910728435A CN 112341074 A CN112341074 A CN 112341074A
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- waste slurry
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- waste
- sand
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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
- C04B28/04—Portland cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses waste slurry concrete and a preparation method thereof, belonging to the technical field of building materials. The cement mortar is prepared by mixing 300-430 parts of cement, 125-165 parts of waste powder, 250-420 parts of waste slurry, 830-860 parts of river sand, 875-940 parts of broken stone and 5-6 parts of a water reducing agent in parts by weight; the waste slurry comprises a concrete transport vehicle, a concrete stirring main machine and mixed slurry generated in the washing process of waste concrete; and sieving and grinding the waste powder. The invention recycles the waste slurry powder, and has low cost, environmental protection and high economic benefit.
Description
Technical Field
The invention relates to the field of building materials, in particular to waste slurry concrete and a preparation method thereof.
Background
According to statistics, with the continuous expansion of the scale of the infrastructure, the annual output of the concrete in China exceeds 15 hundred million m3Average per 1m generated3The concrete can generate 0.03 ton of waste water.
The waste water of the concrete mixing plant mainly comprises cement hydration products C-S-H gel (hydrated calcium silicate), ettringite, alkaline substances, fine aggregate, chemical admixture, mineral admixture which does not participate in reaction and the like. The waste water contains a certain amount of gel material components, has strong alkalinity, and can destroy a natural ecosystem if the waste water is directly discharged into a surrounding natural environment. The 'green production and management technical specification of ready-mixed concrete' JGJ/T328-2014 stipulates that ready-mixed concrete enterprises should reasonably utilize waste slurry in the production process, can replace part of production water for production and application, ensures the quality of concrete, purifies the sanitation of a plant area, and avoids the random discharge of waste water and waste slurry. The reasonable utilization of the waste slurry not only protects the environment, but also realizes the reutilization of the waste, saves the resources and has great economic, social and environmental benefits.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a waste slurry concrete and a preparation method thereof, wherein the waste slurry concrete is formed by mixing 300-430 parts of cement, 125-165 parts of waste powder, 250-420 parts of waste slurry, 830-860 parts of river sand, 875-940 parts of broken stone and 5-6 parts of water reducing agent, and the above components are calculated by weight;
a preparation method of waste slurry-powder concrete comprises the following steps:
(1) collecting waste slurry;
(2) the waste slurry is separated into sand and waste slurry through a sand-stone separating device, the sand and the sand are recycled, the waste slurry flows into the stirring pool a, and the waste slurry flows into the collecting tank after being stirred;
(3) a gravity sensing device is arranged at the bottom of the collecting tank, and the mass of the collecting tank when the solid content of the waste slurry is 8% is regarded as the standard mass; when the mass of the collecting tank is less than or equal to the standard mass, the waste slurry flows into a collecting pool; when the mass of the collecting tank is greater than the standard mass, clear water is discharged into the collecting tank from the bottom, the waste slurry overflowing from the upper part of the collecting tank is discharged back into the stirring pool a, and the waste slurry is discharged into a collecting pool until the mass of the collecting tank is equal to the standard mass;
(4) collecting waste powder, sieving the waste powder, and grinding fragments larger than 20mm until the diameter of the fragments is smaller than 20 mm;
(5) and mixing 250-420 parts of waste slurry, 125-165 parts of waste powder, 300-430 parts of cement, 830-860 parts of river sand, 875-940 parts of broken stone and 5-6 parts of a water reducing agent in the collecting pool.
In the invention, when the sand-stone separation device is used for sand-stone separation, the waste slurry in the waste slurry pool is used for scouring.
In the invention, the waste slurry comprises a concrete transport vehicle, a concrete stirring main machine and mixed slurry generated in the washing process of waste concrete.
In the invention, the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
In the invention, the cement is 42.5-grade portland cement or ordinary portland cement.
Compared with the prior art, the invention has the advantages that:
1. the waste slurry powder is adopted to prepare the concrete, so that the cost is low and the economic benefit is high.
2. The solid content of the waste slurry can be approximately controlled, and the relative stability of the concrete quality is ensured.
3. The problems of waste treatment and the like of the concrete mixing plant are solved.
Detailed Description
The waste slurry concrete is prepared by mixing 300-430 parts of cement, 125-165 parts of waste powder, 250-420 parts of waste slurry, 830-860 parts of river sand, 875-940 parts of broken stone and 5-6 parts of a water reducing agent in parts by weight.
A preparation method of waste slurry-powder concrete comprises the following steps:
(1) and collecting the waste slurry.
(2) The waste slurry is separated into sand and waste slurry through a sand separation device, the sand is recycled, the waste slurry flows into the stirring pool a, and the waste slurry flows into the collection tank after being stirred.
(3) A gravity sensing device is arranged at the bottom of the collecting tank, and the mass of the collecting tank when the solid content of the waste slurry is 8% is regarded as the standard mass; when the mass of the collecting tank is less than or equal to the standard mass, the waste slurry flows into a collecting pool; when the mass of the collecting tank is greater than the standard mass, clear water is discharged into the collecting tank from the bottom, the waste slurry overflowing from the upper part of the collecting tank is discharged back into the stirring pool a, and the waste slurry is discharged into a collecting pool until the mass of the collecting tank is equal to the standard mass.
(4) Collecting waste powder, sieving the waste powder, and grinding fragments larger than 20mm until the diameter of the fragments is smaller than 20 mm.
(5) And mixing 250-420 parts of waste slurry, 125-165 parts of waste powder, 300-430 parts of cement, 830-860 parts of river sand, 875-940 parts of broken stone and 5-6 parts of a water reducing agent in a collecting pool, wherein the cement is 42.5-grade portland cement or ordinary portland cement.
When the sand-stone separation device is used for sand-stone separation, the waste slurry in the waste slurry pool is used for scouring.
The waste slurry comprises a concrete transport vehicle, a concrete stirring main machine and mixed slurry generated in the washing process of the waste concrete.
The water reducing agent is a polycarboxylic acid high-performance water reducing agent.
The cement is 42.5-grade portland cement or ordinary portland cement.
Example 1: and collecting waste slurry produced in the concrete transport vehicle, the concrete stirring main machine and the waste concrete washing process. The waste slurry is separated into sand and waste slurry through the sand-stone separating device, and the sand are conveyed to a sand-stone pile by the conveying belt, so that the next recycling is facilitated. And the waste slurry flows into the stirring pool a, and the waste slurry flows into the collecting tank after being stirred. When the sand-stone separation device is used for sand-stone separation, the waste slurry in the waste slurry pool is used for scouring.
A gravity sensing device is arranged at the bottom of the collecting tank, and the mass of the collecting tank when the solid content of the waste slurry is 8% is regarded as the standard mass; when the mass of the collecting tank is less than or equal to the standard mass, the waste slurry flows into a collecting pool; when the mass of the collecting tank is greater than the standard mass, clear water is discharged into the collecting tank from the bottom, the waste slurry overflowing from the upper part of the collecting tank is discharged back into the stirring pool a, and the waste slurry is discharged into a collecting pool until the mass of the collecting tank is equal to the standard mass.
And collecting waste powder generated in the concrete manufacturing process, sieving the waste powder, and grinding and crushing fragments larger than 20mm until the diameter of the fragments is smaller than 20 mm.
And (3) mixing 320 parts of waste slurry, 150 parts of waste powder, 300 parts of ordinary portland cement, 860 parts of river sand, 900 parts of broken stone and 5.5 parts of polycarboxylic acid high-performance water reducing agent in the collecting pond.
Example 2: and collecting waste slurry produced in the concrete transport vehicle, the concrete stirring main machine and the waste concrete washing process. The waste slurry is separated into sand and waste slurry through the sand-stone separating device, and the sand are conveyed to a sand-stone pile by the conveying belt, so that the next recycling is facilitated. And the waste slurry flows into the stirring pool a, and the waste slurry flows into the collecting tank after being stirred. When the sand-stone separation device is used for sand-stone separation, the waste slurry in the waste slurry pool is used for scouring.
A gravity sensing device is arranged at the bottom of the collecting tank, and the mass of the collecting tank when the solid content of the waste slurry is 8% is regarded as the standard mass; when the mass of the collecting tank is less than or equal to the standard mass, the waste slurry flows into a collecting pool; when the mass of the collecting tank is greater than the standard mass, clear water is discharged into the collecting tank from the bottom, the waste slurry overflowing from the upper part of the collecting tank is discharged back into the stirring pool a, and the waste slurry is discharged into a collecting pool until the mass of the collecting tank is equal to the standard mass.
And collecting waste powder generated in the concrete manufacturing process, sieving the waste powder, and grinding and crushing fragments larger than 20mm until the diameter of the fragments is smaller than 20 mm.
300 parts of waste slurry, 160 parts of waste powder, 330 parts of 42.5-grade portland cement, 840 parts of river sand, 940 parts of broken stone and 5.3 parts of polycarboxylic acid high-performance water reducing agent in the collecting pond are mixed.
Example 3: and collecting waste slurry produced in the concrete transport vehicle, the concrete stirring main machine and the waste concrete washing process. The waste slurry is separated into sand and waste slurry through the sand-stone separating device, and the sand are conveyed to a sand-stone pile by the conveying belt, so that the next recycling is facilitated. And the waste slurry flows into the stirring pool a, and the waste slurry flows into the collecting tank after being stirred. When the sand-stone separation device is used for sand-stone separation, the waste slurry in the waste slurry pool is used for scouring.
A gravity sensing device is arranged at the bottom of the collecting tank, and the mass of the collecting tank when the solid content of the waste slurry is 8% is regarded as the standard mass; when the mass of the collecting tank is less than or equal to the standard mass, the waste slurry flows into a collecting pool; when the mass of the collecting tank is greater than the standard mass, clear water is discharged into the collecting tank from the bottom, the waste slurry overflowing from the upper part of the collecting tank is discharged back into the stirring pool a, and the waste slurry is discharged into a collecting pool until the mass of the collecting tank is equal to the standard mass.
And collecting waste powder generated in the concrete manufacturing process, sieving the waste powder, and grinding and crushing fragments larger than 20mm until the diameter of the fragments is smaller than 20 mm.
And mixing 260 parts of waste slurry, 140 parts of waste powder, 310 parts of 42.5-grade portland cement, 830 parts of river sand, 900 parts of broken stone and 5 parts of polycarboxylic acid high-performance water reducing agent in the collecting pond.
The waste slurry concrete is low-grade concrete, can be used for paving roads in parks, can not crack and damage the concrete because the roads do not pass through overweight vehicles,
the foregoing description is only exemplary of the preferred embodiments of the application and is provided for the purpose of illustrating the general principles of the technology and the like. Meanwhile, the scope of the invention according to the present application is not limited to the technical solutions in which the above-described technical features are combined in a specific manner, and also covers other technical solutions in which the above-described technical features or their equivalent are combined arbitrarily without departing from the inventive concept described above. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (6)
1. A waste slurry concrete and a preparation method thereof are characterized in that: the waste slurry concrete is formed by mixing 300-430 parts of cement, 125-165 parts of waste powder, 250-420 parts of waste slurry, 830-860 parts of river sand, 875-940 parts of broken stone and 5-6 parts of a water reducing agent in parts by weight.
2. A preparation method of waste slurry concrete is characterized by comprising the following steps: the preparation process of the waste slurry concrete comprises the following steps:
(1) collecting waste slurry;
(2) the waste slurry is separated into sand and waste slurry through a sand-stone separating device, the sand and the sand are recycled, the waste slurry flows into the stirring pool a, and the waste slurry flows into the collecting tank after being stirred;
(3) a gravity sensing device is arranged at the bottom of the collecting tank, and the mass of the collecting tank when the solid content of the waste slurry is 8% is regarded as the standard mass; when the mass of the collecting tank is less than or equal to the standard mass, the waste slurry flows into a collecting pool; when the mass of the collecting tank is greater than the standard mass, clear water is discharged into the collecting tank from the bottom, the waste slurry overflowing from the upper part of the collecting tank is discharged back into the stirring pool a, and the waste slurry is discharged into a collecting pool until the mass of the collecting tank is equal to the standard mass;
(4) collecting waste powder, sieving the waste powder, and grinding fragments larger than 20mm until the diameter of the fragments is smaller than 20 mm;
(5) and mixing 250-420 parts of waste slurry, 125-165 parts of waste powder, 300-430 parts of cement, 830-860 parts of river sand, 875-940 parts of broken stone and 5-6 parts of a water reducing agent in the collecting pool.
3. The waste slurry concrete and the preparation method thereof according to claim 1, wherein the concrete is characterized in that: when the sand-stone separation device is used for sand-stone separation, the waste slurry in the waste slurry pool is used for scouring.
4. The waste slurry concrete and the preparation method thereof according to claim 1, wherein the concrete is characterized in that: the waste slurry comprises a concrete transport vehicle, a concrete stirring main machine and mixed slurry generated in the washing process of the waste concrete.
5. The waste slurry concrete and the preparation method thereof according to claim 1, wherein the concrete is characterized in that: the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
6. The waste slurry concrete and the preparation method thereof according to claim 1, wherein the concrete is characterized in that: the cement is 42.5-grade portland cement or ordinary portland cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728435.0A CN112341074A (en) | 2019-08-08 | 2019-08-08 | Waste slurry concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728435.0A CN112341074A (en) | 2019-08-08 | 2019-08-08 | Waste slurry concrete and preparation method thereof |
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| Publication Number | Publication Date |
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| CN112341074A true CN112341074A (en) | 2021-02-09 |
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| CN201910728435.0A Pending CN112341074A (en) | 2019-08-08 | 2019-08-08 | Waste slurry concrete and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773022A (en) * | 2021-09-27 | 2021-12-10 | 明阳智慧能源集团股份公司 | White clear water finish concrete for prefabricated parts and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014014428A1 (en) * | 2012-07-18 | 2014-01-23 | Akg Gazbeton Isletmeleri San. Tic. A.S. | Building material based on calcium silicate comprising boron oxide compounds |
| CN105776994A (en) * | 2016-02-03 | 2016-07-20 | 绍兴文理学院 | Self-compacting concrete prepared from concrete mixing station waste slurry |
| CN105819783A (en) * | 2016-03-14 | 2016-08-03 | 同济大学 | Salt frost resistant concrete curbstone prepared from waste slurry of concrete mixing station and preparation method thereof |
| CN106079102A (en) * | 2016-08-04 | 2016-11-09 | 云南建工集团曲靖建材有限公司 | A kind of concrete mixing plant waste recovery Application way and system thereof |
| CN109279798A (en) * | 2018-09-21 | 2019-01-29 | 重庆建工建材物流有限公司 | A kind of high-volume newly mixes method for recycling waste concrete and system |
-
2019
- 2019-08-08 CN CN201910728435.0A patent/CN112341074A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014014428A1 (en) * | 2012-07-18 | 2014-01-23 | Akg Gazbeton Isletmeleri San. Tic. A.S. | Building material based on calcium silicate comprising boron oxide compounds |
| CN105776994A (en) * | 2016-02-03 | 2016-07-20 | 绍兴文理学院 | Self-compacting concrete prepared from concrete mixing station waste slurry |
| CN105819783A (en) * | 2016-03-14 | 2016-08-03 | 同济大学 | Salt frost resistant concrete curbstone prepared from waste slurry of concrete mixing station and preparation method thereof |
| CN106079102A (en) * | 2016-08-04 | 2016-11-09 | 云南建工集团曲靖建材有限公司 | A kind of concrete mixing plant waste recovery Application way and system thereof |
| CN109279798A (en) * | 2018-09-21 | 2019-01-29 | 重庆建工建材物流有限公司 | A kind of high-volume newly mixes method for recycling waste concrete and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773022A (en) * | 2021-09-27 | 2021-12-10 | 明阳智慧能源集团股份公司 | White clear water finish concrete for prefabricated parts and preparation method thereof |
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Application publication date: 20210209 |
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| RJ01 | Rejection of invention patent application after publication |