CN103130474A - LC7.5 haydite concrete prepared from reclaimed sand and preparation method thereof - Google Patents
LC7.5 haydite concrete prepared from reclaimed sand and preparation method thereof Download PDFInfo
- Publication number
- CN103130474A CN103130474A CN2013100703873A CN201310070387A CN103130474A CN 103130474 A CN103130474 A CN 103130474A CN 2013100703873 A CN2013100703873 A CN 2013100703873A CN 201310070387 A CN201310070387 A CN 201310070387A CN 103130474 A CN103130474 A CN 103130474A
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- China
- Prior art keywords
- water
- reclaimed sand
- cement
- haydite
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004567 concrete Substances 0.000 title claims abstract description 58
- 239000004576 sand Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 239000004568 cement Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000010881 fly ash Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 14
- -1 haydite Substances 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000013467 fragmentation Methods 0.000 claims description 5
- 238000006062 fragmentation reaction Methods 0.000 claims description 5
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 125000001624 naphthyl group Chemical group 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 4
- 239000004035 construction material Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention is applicable to the field of construction materials, and provides an LC7.5 haydite concrete prepared from reclaimed sand and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 1 part of cement, 3.95-4.75 parts of reclaimed sand, 1.19-1.42 parts of haydite, 0.60 part of fly ash, 0.024 part of admixture and 1.12-1.31 parts of water. The water-to-cement ratio is 0.70-0.82. The prepared LC7.5 haydite concrete has the advantages of qualified and stable strength, favorable workability, favorable cohesiveness, favorable water retention property and favorable flowability, and is easy for construction. The cost of concrete is greatly lowered.
Description
Technical field
The invention belongs to building material field, relate in particular to a kind of LC7.5 haydite concrete with reclaimed sand preparation and preparation method thereof.
Background technology
Concrete is indispensable important engineering materials in modern civil construction project, has higher ultimate compression strength and endurance quality, thereby and can coordinate by a certain percentage by differing materials and obtain different Physical and mechanical properties, but and retrospective arranged.But traditional LC7.5 haydite concrete is all to use natural fine aggregate (natural sandstone) material, and so not only expense is high, can not carry out that country relevantly economizes on resources, the techno-economic policy of protection of the environment simultaneously.
Summary of the invention
The object of the invention is to: a kind of LC7.5 haydite concrete with the reclaimed sand preparation is provided, is intended to solve the problem that existing LC7.5 haydite concrete resource consumption is large, cost is high.
The object of the present invention is achieved like this:
A kind of LC7.5 haydite concrete with the reclaimed sand preparation; material composition comprises cement, reclaimed sand, haydite, flyash, admixture and water; press cement weight between each material composition than being cement: reclaimed sand: haydite: flyash: admixture: water=1 ︰ (3.95-4.75): (1.19-1.42): 0.60:0.024:(1.12-1.31); wherein, water-cement ratio is 0.70-0.82.
Further, be specially cement by the cement weight ratio between described concrete each material composition: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 4.75 ︰ 1.42 ︰ 0.60 ︰ 0.024 ︰ 1.31, wherein, water-cement ratio is 0.82.
Or further, be specially cement by the cement weight ratio between described concrete each material composition: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 3.95 ︰ 1.19 ︰ 0.60 ︰ 0.024 ︰ 1.12, wherein, water-cement ratio is 0.70.
Or further, be specially cement by the cement weight ratio between described concrete each material composition: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 4.32 ︰ 1.30 ︰ 0.60 ︰ 0.024 ︰ 1.21, wherein, water-cement ratio is 0.76.
Wherein, described reclaimed sand is for particle diameter≤5mm, the fineness modulus that building waste is obtained through screening after fragmentation again is 2.8, powder content 2.5%, clod content 0.8%, apparent density 2640Kg/m
3, regeneration ratio of water dosage 1.2 reclaimed sand.
Described haydite is particle diameter 10-16mm, loose volume weight 600 kg/m
3, water-intake rate 8.5%(1h water-intake rate), the leca of crush index 2.5%.
Described admixture is naphthalene series high-efficiency water-reducing agent; Described cement is P.O42.5 cement; Described flyash is II level flyash.
Another object of the present invention is to: a kind of preparation method of the LC7.5 haydite concrete with reclaimed sand preparation as above is provided, comprises the steps:
Take cement, reclaimed sand, haydite, flyash, admixture and water by proportioning;
The water that drops into reclaimed sand, haydite, flyash and 1/2 stirred 60 seconds;
The water and the admixture that drop into cement, residue 1/2 continue to stir until evenly go out machine.
Wherein, dropping into from reclaimed sand, regeneration aggregate the churning time that stirrer to concrete goes out machine is 120-150 second.
Outstanding advantages of the present invention is: the present invention by the treated fragmentation of the building waste of choosing different-grain diameter, screening after the reclaimed sand that obtains add cement, flyash, haydite, admixture and water to prepare the LC7.5 haydite concrete; the concrete strength that not only makes is qualified stable; workability, cohesiveness, water-retentivity, mobility are all fine; be easy to construction; and more environmental protection of preparation process, concrete cost is also reduced greatly.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
LC7.5 haydite concrete provided by the invention adopts cement, reclaimed sand, haydite, flyash, admixture; and water gets as the raw material preparation; these several stock yards are followed successively by 1:(3.95-4.75 by the cement weight ratio): (1.19-1.42): 0.60:0.024:(1.12-1.31); wherein, water-cement ratio is 0.70-0.82.Described reclaimed sand is for particle diameter≤5mm, the fineness modulus that building waste is obtained through screening after fragmentation again is 2.8, powder content 2.5%, clod content 0.8%, apparent density 2640Kg/m
3, regeneration ratio of water dosage 1.2 reclaimed sand; Described haydite is particle diameter 10-16mm, loose volume weight 600 kg/m
3, water-intake rate 8.5%(1h water-intake rate), the leca of crush index 2.5%; Described admixture is naphthalene series high-efficiency water-reducing agent; Described cement is that bulk cement is main, preferred P.O42.5 cement; Described flyash is II level flyash.Wherein, building waste dregs, spoir, remaining mud and other wastes that to be construction, unit in charge of construction or individual build, lay or remove, produce in the repairerment process all kinds of buildingss, structures, pipe network etc.
The preparation method of the LC7.5 haydite concrete with reclaimed sand preparation provided by the invention is as follows:
Step 1, take starting material by proportioning;
Step 2, the water that drops into reclaimed sand, haydite, flyash and 1/2 stirred 60 seconds;
Step 3, the water that drops into cement, residue 1/2 and admixture continue to stir until evenly go out machine.
Wherein, drop into from reclaimed sand the churning time that stirrer to concrete goes out machine and be preferably 120-150 second.
After going out machine, tests with slump bucket by national standard method GB/T50080-2002 " Standard for test methods of properties of ordinary concrete mixture standard " LC7.5 haydite concrete with the reclaimed sand preparation provided by the invention, the slump is at 160 ± 20mm, divergence is at 350-450mm, has good workability, cohesiveness, water-retentivity, mobility, serviceability good; Going out machine by 30 minutes, slump test is 140 ± 20mm; Through 60 minutes, slump test was 120 ± 20mm.
In one embodiment of the invention; the material composition proportioning (cement weight ratio) of preparation LC7.5 haydite concrete is cement: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 4.75 ︰ 1.42 ︰ 0.60 ︰ 0.024 ︰ 1.31; wherein, water-cement ratio is 0.82.After stirring 60 seconds by the water that first drops into reclaimed sand, haydite, flyash and 1/2, then the water and the admixture that drop into cement, residue 1/2 continue to stir until evenly get final product.
During test, take out the concrete that mixes and stirs and divide the two-layer die trial of packing into, feed thickness about equally for every layer, then the tamper with diameter 16mm evenly plugs and pounds to the center from the edge by spiral, and when plugging and pounding bottom concrete, tamper will arrive bottom die trial; When plugging and pounding the upper strata, tamper inserts the 20-30mm of lower floor after should running through the upper strata; Should keep vertical when plugging and pounding, must not tilt.Then use spatula along the plug of die trial wall for several times, every layer plugs and pounds number of times and must not be less than in 10000 square millimeters 12 times.Plug and pound rear application rubber mallet die trial surrounding, until the hole that tamper stays after plugging and pounding disappears.Then carry out maintenance with the floating concrete curing box of putting into of trowel.24 as a child form removals, after form removal, test block is moved to the concrete mark support between in carry out maintenance (mark support between 20 ± 2 ℃ of temperature, humidity 〉=95%), when reach 28 days the age of concrete, concrete test block is taken out, the method that adopts " GB/T 50081-2002 standard for test methods of mechanical properties of ordinary concrete " to provide is carried out intensity detection to test block, its intensity is 10.2Mp, conformance with standard.
In another embodiment of the present invention; the material composition proportioning (cement weight ratio) of preparation LC7.5 haydite concrete is cement: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 3.95 ︰ 1.19 ︰ 0.60 ︰ 0.024 ︰ 1.12; wherein, water-cement ratio is 0.70.LC7.5 haydite concrete according to this proportioning and above-mentioned preparation method make adopts above-mentioned same testing method to carry out intensity detection to it, and intensity reaches 11.9Mp, conformance with standard.
And in a preferred embodiment of the invention; the material composition proportioning (cement weight ratio) of preparation LC7.5 haydite concrete is cement: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 4.32 ︰ 1.30 ︰ 0.60 ︰ 0.024 ︰ 1.21; wherein, water-cement ratio is 0.76.The LC7.5 haydite concrete that makes according to this proportioning and above-mentioned preparation method; it is adopted above-mentioned same testing method; reach 3 days in the age of concrete, concrete taken out 7 days, 28 days the time; the method that adopts " GB/T 50081-2002 standard for test methods of mechanical properties of ordinary concrete " to provide is carried out intensity detection to concrete; its intensity is respectively 5.4 Mp, 8.3Mp, 11.0Mp; conformance with standard, and on cost every cubic metre can save 12 yuan.
The present invention by the treated fragmentation of the building waste of choosing different-grain diameter, screening after the reclaimed sand that obtains add cement, flyash, haydite, admixture and water to prepare the LC7.5 haydite concrete; not only made from construction refuse resource is recycled; carried out nationally relevant economize on resources, the techno-economic policy of protection of the environment; and owing to utilizing solid waste; greatly reduce concrete cost; and the concrete strength that makes is qualified stable; workability, cohesiveness, water-retentivity, mobility are all fine, are easy to construction.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. LC7.5 haydite concrete with reclaimed sand preparation; it is characterized in that; described concrete material composition comprises cement, reclaimed sand, haydite, flyash, admixture and water; press cement weight between each material composition than being cement: reclaimed sand: haydite: flyash: admixture: water=1 ︰ (3.95-4.75): (1.19-1.42): 0.60:0.024:(1.12-1.31); wherein, water-cement ratio is 0.70-0.82.
2. the LC7.5 haydite concrete with reclaimed sand preparation as claimed in claim 1; it is characterized in that; be specially cement by the cement weight ratio between described concrete each material composition: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 4.75 ︰ 1.42 ︰ 0.60 ︰ 0.024 ︰ 1.31; wherein, water-cement ratio is 0.82.
3. the LC7.5 haydite concrete with reclaimed sand preparation as claimed in claim 1; it is characterized in that; be specially cement by the cement weight ratio between described concrete each material composition: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 3.95 ︰ 1.19 ︰ 0.60 ︰ 0.024 ︰ 1.12; wherein, water-cement ratio is 0.70.
4. the LC7.5 haydite concrete with reclaimed sand preparation as claimed in claim 1; it is characterized in that; be specially cement by the cement weight ratio between described concrete each material composition: reclaimed sand: haydite: flyash: admixture: water=1 ︰ 4.32 ︰ 1.30 ︰ 0.60 ︰ 0.024 ︰ 1.21; wherein, water-cement ratio is 0.76.
5. the LC7.5 haydite concrete with reclaimed sand preparation as described in any one in claim 1-4; it is characterized in that, described reclaimed sand is for particle diameter≤5mm, the fineness modulus that building waste is obtained through screening after fragmentation again is 2.8, powder content 2.5%, clod content 0.8%, apparent density 2640Kg/m
3, regeneration ratio of water dosage 1.2 reclaimed sand.
6. the LC7.5 haydite concrete with the reclaimed sand preparation as described in any one in claim 1-4, is characterized in that, described haydite is particle diameter 10-16mm, loose volume weight 600 kg/m
3, water-intake rate 8.5%(1h water-intake rate), the leca of crush index 2.5%.
7. the LC7.5 haydite concrete with the reclaimed sand preparation as described in any one in claim 1-4, is characterized in that, described admixture is naphthalene series high-efficiency water-reducing agent; Described cement is P.O42.5 cement; Described flyash is II level flyash.
8. the preparation method of the LC7.5 haydite concrete with reclaimed sand preparation as claimed in claim 1, is characterized in that, comprises the steps:
Take cement, reclaimed sand, haydite, flyash, admixture and water by proportioning;
The water that drops into reclaimed sand, haydite, flyash and 1/2 stirred 60 seconds;
The water and the admixture that drop into cement, residue 1/2 continue to stir until evenly go out machine.
9. the preparation method of the LC7.5 haydite concrete with reclaimed sand preparation as claimed in claim 8, is characterized in that, dropping into from reclaimed sand, regeneration aggregate the churning time that stirrer to concrete goes out machine is 120-150 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310070387.3A CN103130474B (en) | 2013-03-05 | 2013-03-05 | LC7.5 haydite concrete prepared from reclaimed sand and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310070387.3A CN103130474B (en) | 2013-03-05 | 2013-03-05 | LC7.5 haydite concrete prepared from reclaimed sand and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103130474A true CN103130474A (en) | 2013-06-05 |
| CN103130474B CN103130474B (en) | 2014-04-09 |
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| CN201310070387.3A Active CN103130474B (en) | 2013-03-05 | 2013-03-05 | LC7.5 haydite concrete prepared from reclaimed sand and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036657A (en) * | 2015-07-29 | 2015-11-11 | 国网智能电网研究院 | High-strength lightweight aggregate concrete and preparation method thereof |
| CN107915445A (en) * | 2017-12-01 | 2018-04-17 | 南阳理工学院 | A kind of building refuse concrete and its application |
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|---|---|---|---|---|
| JP2006111523A (en) * | 2004-09-15 | 2006-04-27 | Shinozaki Kenzai Kk | Method for manufacturing regenerated aggregate |
| CN101134346A (en) * | 2007-08-31 | 2008-03-05 | 武汉理工大学 | Method of producing pump-transporting light aggregate concrete |
| CN101391880A (en) * | 2007-09-17 | 2009-03-25 | 寇全有 | Lightweight concrete material from cast-in-situ wall construction waste and production and use method thereof |
| CN102503290A (en) * | 2011-11-25 | 2012-06-20 | 陈家灯 | Inorganic material heat insulation concrete |
-
2013
- 2013-03-05 CN CN201310070387.3A patent/CN103130474B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006111523A (en) * | 2004-09-15 | 2006-04-27 | Shinozaki Kenzai Kk | Method for manufacturing regenerated aggregate |
| CN101134346A (en) * | 2007-08-31 | 2008-03-05 | 武汉理工大学 | Method of producing pump-transporting light aggregate concrete |
| CN101391880A (en) * | 2007-09-17 | 2009-03-25 | 寇全有 | Lightweight concrete material from cast-in-situ wall construction waste and production and use method thereof |
| CN102503290A (en) * | 2011-11-25 | 2012-06-20 | 陈家灯 | Inorganic material heat insulation concrete |
Non-Patent Citations (1)
| Title |
|---|
| 周宜: "陶粒混凝土掺合料配比实验分析", 《内蒙古科技与经济》, no. 22, 30 November 2009 (2009-11-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036657A (en) * | 2015-07-29 | 2015-11-11 | 国网智能电网研究院 | High-strength lightweight aggregate concrete and preparation method thereof |
| CN107915445A (en) * | 2017-12-01 | 2018-04-17 | 南阳理工学院 | A kind of building refuse concrete and its application |
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| Publication number | Publication date |
|---|---|
| CN103130474B (en) | 2014-04-09 |
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Denomination of invention: LC7.5 haydite concrete prepared from reclaimed sand and preparation method thereof Effective date of registration: 20140718 Granted publication date: 20140409 Pledgee: China Cinda Asset Management Corp Beijing branch Pledgor: Beijing Xinao Concrete Group Co.,Ltd. Registration number: 2014990000587 |
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