CN104016641A - Light high-strength pumpable LC35 concrete and pumping and pouring method thereof - Google Patents
Light high-strength pumpable LC35 concrete and pumping and pouring method thereof Download PDFInfo
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- CN104016641A CN104016641A CN201410288064.6A CN201410288064A CN104016641A CN 104016641 A CN104016641 A CN 104016641A CN 201410288064 A CN201410288064 A CN 201410288064A CN 104016641 A CN104016641 A CN 104016641A
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- 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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Abstract
The invention relates to light high-strength pumpable LC35 concrete, wherein the concrete consists of the following components in dosage proportion (kg/m<3>): 280-330 kg/m<3> of cement, 90-110 kg/m<3> of coal ash, 70-90 kg/m<3> of superfine slag powder, 650-700 kg/m<3> of natural medium sand with fineness modulus of 2.3-2.5, 330-370 kg/m<3> of ceramsite, 5.28-6.24 kg/m<3> of admixture, and 170-175 kg/m<3> of mixed water. The method for pumping and pouring the LC35 concrete comprises the following steps of: firstly, detecting pumpability of the LC35 before entering a pump; pumping tube-lubricating mortar; immediately pumping LC35 concrete, and suspending the pumping while pumping to a pump outlet; integrally compacting the structure of the light ceramsite concrete by virtue of mobility and compactness of the LC35 concrete when the LC35 concrete is poured to a floor structure, and not carrying out vibrating construction while pouring; completing plastering during initial-setting while pouring and press-polishing and plastering before final-setting. Through engineering application to the 52m-high floor structure of a convention and exhibition complex project of China Expo, the LC35 concrete and the pumping method disclosed by the invention obtain very good using effect, so that reference is provided for high-pumping of the similar light high-strength concrete in future.
Description
Technical field
The present invention relates to material of construction, specially refer to the concrete of a kind of lightweight, high-strength and pumpability.
Background technology
Concrete is one of contemporary topmost civil engineering material.It is by gelling material, and particulate state is gathered materials in (also referred to as aggregate), water, and the admixture adding if desired and adulterant prepare by a certain percentage, and through uniform stirring, closely knit moulding, a kind of artificial stone material that maintenance sclerosis forms.Concrete has abundant raw material, cheap, the simple feature of production technique, thereby make its consumption increasing.It is high that while concrete also has ultimate compression strength, good endurance, the features such as strength grade wide ranges.These features make its use range very extensive, not only in various civil engineering works, use, and be exactly shipbuilding, mechanical industry, the exploitation of ocean, geothermal engineering etc., concrete is also important material.
In prior art, different buildings or the different sites of building require to have very large difference to concrete performance.Concrete intensity, density and pumping are three important performance index, but in most of the cases, are difficult to meet the requirement of practical application between three simultaneously, can carry out according to actual use occasion the concrete of development of new.A current substantive issue of encountering is: when prepared by concrete, emphasize that concrete intensity, density meet the demands, often the height of pump-conveying property and pumping can not meet the demands unilaterally; Or when density and pumping meet the demands, concrete intensity can not meet the demands.In this case, we require to develop the requirement of putting into practice that a kind of concrete meets lightweight, high strength and high pumpability urgently.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, the LC35 concrete that a kind of new high-strength light pumpability is provided with and pumping casting method.LC35 concrete of the present invention can meet the requirement of intensity, density and pumping height simultaneously, ensures the globality of high-strength light LC35 concrete depositing, improves its pumpability and construction reliability in engineering application.
In order to reach foregoing invention object, technical scheme provided by the invention is as follows:
A LC35 concrete for high-strength light pumpability, is characterized in that, composition folk prescription consumption proportion (kg/m in concrete
3) as follows: cement 280 ~ 330, flyash 90 ~ 110, slag micropowder 70 ~ 90, the nature medium sand 650 ~ 700 that fineness modulus is 2.3～2.5, haydite 330 ~ 370, admixture 5.28 ~ 6.24, mixing water 170～175; Described haydite is the haydites of book structure of particle diameter 5mm ~ 25mm continuous grading, and the tap density grade of haydite is 750 kg/m
3~ 850 kg/m
3, cylindrical compress strength>=6.5MPa, the high-strength ceramsite that described haydite is strength mark>=40MPa, water-intake rate≤8%; Described admixture is polycarboxylate high performance water-reducing agent, and water-reducing rate is 16%～20%, to concrete guarantor time>=3 hour that collapse, 3 hours bleeding rate≤5%; The described concrete average intensity of 28 days is 40MPa, and in 3 hours, divergence remains on 500mm ± 50mm, and density is 1600 kg/m
3～1700 kg/m
3.
In the LC35 of high-strength light pumpability of the present invention concrete, the ratio of described flyash and slag micropowder is: 1～1.57: 1.
In the LC35 of high-strength light pumpability of the present invention concrete, the ratio of described cement and haydite is: 1:1.32～1.
In the LC35 of high-strength light pumpability of the present invention concrete, the strength grade of described cement is P.O42.5 ordinary Portland cement, 28d glue sand ultimate compression strength>=48MPa, consumptive use of water normal consistence≤27% of cement, tricalcium aluminate C in cement
3a mineral constituent content≤7.0%, the specific surface area≤380m of cement
2/ kg.
In the LC35 of high-strength light pumpability of the present invention concrete, the fineness modulus of described nature medium sand is 2.3 ~ 2.5, silt content≤1.0%, apparent density≤2640kg/m
3.
In the LC35 of high-strength light pumpability of the present invention concrete, the grade of described slag micropowder is S95, degree of mobilization ratio >=105%, 28d activity >=100%.
The concrete method of above-mentioned LC35 is built in pumping, and the method is that high-strength light LC35 haydite concrete is pumped on predetermined floor construction by pump truck, it is characterized in that, the method comprises the steps:
The first step, detect into the concrete pumpability of LC35 before pump, high-strength light LC35 concrete was transported to working-yard by transport mixer in 1 hour, before entering pump, LC35 concrete is sampled to detect pumpability, if it enters mobile divergence before pump between 450mm～550mm, meeting can pumping requirement, prepares pumping;
Second step, pumping profit pipe mortar, needing the amount of profit pipe mortar is between 1/3rd volume～bis-/mono-volumes of whole layout pump line total volume, can guarantee so the concrete lubricated pumping of LC35, again can saving resource, avoid unnecessary waste;
The 3rd step, pumping LC35 concrete, and round-the-clock pumping LC35 concrete at the drop of a hat just can suspend pumping to going out pumping hole, now can come as required mobile pump line position;
The 4th step, when floor construction is arrived in LC35 concrete placement, relies on mobility and the density of LC35 concrete self to make light ceramsite concrete structural entity closely knit, and guarantee the construction of should not vibrating in casting process, avoids Human disturbance;
The 5th step, after LC35 concrete placement completes, wiping one's face in the time of should strengthening initial set, and before final set, carry out press polish and wipe one's face, floating without haydite to ensure the concrete surface of LC35, the integrality performance of the structure of assurance haydite concrete.
Based on above-mentioned technology contents, high-strength light pumpability LC35 concrete of the present invention is compared with existing concrete has following technological merit:
1. high-strength light LC35 concrete of the present invention is less than the unit weight of existing concrete, can reduce so the suffered whole gravity of structure, than existing building, has approximately alleviated 30%, contributes to the stability under loading of special construction requirement.
2. high-strength light LC35 concrete of the present invention, by the preparation of polycarboxylic acid series high-performance admixture and gelling system, has good pumpability, has solved pumpability and the application property problem of light high strength concrete in engineering application.
3. the haydites of book structure that high-strength light LC35 concrete of the present invention passes through preparation is as coarse aggregate, rational tap density and apparent density, when making concrete there is lighter unit weight, reduce haydite in the floating degree of concrete pumping process, casting process, the process of wiping one's face, further ensured the globality that high-strength light LC35 structural concrete is built.
Embodiment
Below we come lightweight of the present invention, high-strength and pumpability LC35 concrete to do further and elaborate in conjunction with specific embodiments, so that technology of the present invention is more in depth understood, but can not limit the scope of the invention with this.
The present invention is a kind of LC35 concrete of high-strength light pumpability, in this LC35 concrete, and the folk prescription consumption proportion (kg/m of moiety
3) as follows:
Cement 280 ~ 330, flyash 90 ~ 110, slag micropowder 70 ~ 90, the nature medium sand 650 ~ 700 that fineness modulus is 2.3～2.5, haydite 330 ~ 370, admixture 5.28 ~ 6.24, mixing water 170～175.
Above-mentioned haydite is the haydites of book structure of particle diameter 5mm ~ 25mm continuous grading, and the tap density grade of haydite is 750 kg/m
3~ 850 kg/m
3, cylindrical compress strength>=6.5MPa, the high-strength ceramsite that described haydite is strength mark>=40MPa, water-intake rate≤8%.
Above-mentioned admixture is polycarboxylate high performance water-reducing agent, be specially the water reducer of being produced by Shanghai Mace Te Jiangong high-tech architecture Chemical Co., Ltd., model is Glenium sky8860, the water-reducing rate of this water reducer is 16%～20%, to concrete guarantor time>=3 hour that collapse, 3 hours bleeding rate≤5%; The described concrete average intensity of 28 days is 40MPa, and in 3 hours, divergence remains on 500mm ± 50mm, and density is 1600 kg/m
3～1700 kg/m
3.
In the LC35 of high-strength light pumpability of the present invention concrete, the ratio of described flyash and slag micropowder is: 1～1.57: 1.The ratio of described cement and haydite is: 1:1.32～1.
In the LC35 of high-strength light pumpability of the present invention concrete, the strength grade of described cement is P.O42.5 ordinary Portland cement, 28d glue sand ultimate compression strength>=48MPa, consumptive use of water normal consistence≤27% of cement, tricalcium aluminate C in cement
3a mineral constituent content≤7.0%, the specific surface area≤380m of cement
2/ kg.The fineness modulus of described nature medium sand is 2.3 ~ 2.5, silt content≤1.0%, apparent density≤2640kg/m
3.The grade of described slag micropowder is S95, degree of mobilization ratio >=105%, 28d activity >=100%.
Table 1 is a specific embodiment, has wherein shown a kind of concrete composition and application of LC35 haydite concrete of the present invention.Folk prescription consumption proportion (the kg/m of each moiety in the present embodiment
3) as follows:
Cement 300, flyash 100, slag micropowder 80, nature medium sand 650, haydites of book structure 350, admixture 6.24.
Table 1: light ceramic LC35 high-strength concrete proportioning
The in the situation that of said ratio, to produce in enormous quantities, the initial extension degree that high-strength light LC35 haydite concrete dispatches from the factory is 540mm, the divergence after 3 hours is-510mm.Concrete density after sclerosis is 1650kg/ m
3; The concrete crushing strength of 28 days is 43.6MPa.
The LC35 concrete pumping casting method of patent of the present invention requires all stricter than existing method, and the method is that the LC35 haydite concrete of high-strength light is pumped on predetermined floor construction by pump truck in use.The inventive method specifically comprises the steps:
First, detect the pumpability into LC35 before pump, high-strength light LC35 concrete was transported to working-yard by transport mixer in 1 hour, before entering pump, carry out concrete sampling to detect its pumpability, if it enters mobile divergence before pump between 450mm～550mm, meeting can pumping requirement, prepares pumping;
Secondly, pumping profit pipe mortar, needing volume is between whole layout pump line total volume 1/3rd volume～bis-/mono-volumes, has both guaranteed lubricated pumping, again saving resource;
Again, pumping LC35 concrete at the drop of a hat, and round-the-clock pumping LC35 concrete just can suspend pumping to going out pumping hole, removable pump line position;
Again, when floor construction is arrived in LC35 concrete placement, rely on mobility and the density of LC35 concrete self to make light ceramsite concrete structural entity closely knit, and the construction of should not vibrating in casting process;
Finally, after LC35 concrete placement completes, wiping one's face in the time of should strengthening initial set, and before final set, carry out press polish and wipe one's face, floating without haydite to ensure the concrete surface of LC35, guarantee haydite concrete structural integrity.
By a large amount of tests, show, high-strength light LC35 concrete matched of the present invention has been made the reasonably combined of each component of concrete, not only solved between the concrete lightweight of high-strength light LC35 and intensity, pumpability and the light ceramic dual contradiction such as between floating, and make whole concrete structure than originally, have more sound-insulating effect.LC35 concrete of the present invention carries out engineering application in the height floor construction of the 52m of Chinese expo exhibitions synthesis project, has obtained good result of use, and provides data refer for the application of similar item from now on.
Claims (7)
1. a LC35 concrete for high-strength light pumpability, is characterized in that, composition folk prescription consumption proportion (kg/m in concrete
3) as follows: cement 280 ~ 330, flyash 90 ~ 110, slag micropowder 70 ~ 90, the nature medium sand 650 ~ 700 that fineness modulus is 2.3～2.5, haydite 330 ~ 370, admixture 5.28～6.24, mixing water 170～175;
Described haydite is the haydites of book structure of particle diameter 5mm ~ 25mm continuous grading, and the tap density grade of haydite is 750 kg/m
3~ 850 kg/m
3, cylindrical compress strength>=6.5MPa, the high-strength ceramsite that described haydite is strength mark>=40MPa, water-intake rate≤8%;
Described admixture is polycarboxylate high performance water-reducing agent, and its water-reducing rate is 16%～20%, to concrete guarantor time >=3 hour that collapse, 3 hours bleeding rate≤5%;
The described concrete average intensity of 28 days is 40MPa, and in 3 hours, divergence remains on 500mm ± 50mm, and density is 1600 kg/m
3～1700 kg/m
3.
2. the LC35 concrete of a kind of high-strength light pumpability according to claim 1, is characterized in that, the ratio of described flyash and slag micropowder is: 1～1.57: 1.
3. the LC35 concrete of a kind of high-strength light pumpability according to claim 1 and 2, is characterized in that, the ratio of described cement and haydite is: 1:1.32～1.
4. the LC35 concrete of a kind of high-strength light pumpability according to claim 1, it is characterized in that, the strength grade of described cement is P.O42.5 ordinary Portland cement, 28d glue sand ultimate compression strength>=48MPa, consumptive use of water normal consistence≤27% of cement, tricalcium aluminate C in cement
3a mineral constituent content≤7.0%, the specific surface area≤380m of cement
2/ kg.
5. the LC35 concrete of a kind of high-strength light pumpability according to claim 1, is characterized in that, the fineness modulus of described nature medium sand is 2.3 ~ 2.5, silt content≤1.0%, apparent density≤2640kg/m
3.
6. the LC35 concrete of a kind of high-strength light pumpability according to claim 1, is characterized in that, the grade of described slag micropowder is S95, degree of mobilization ratio >=105%, 28d activity >=100%.
7. the concrete method of LC35 claimed in claim 1 is built in pumping, and the method is that high-strength light LC35 haydite concrete is pumped on predetermined floor construction by pump truck, it is characterized in that, the method comprises the steps:
The first step, detect into the concrete pumpability of LC35 before pump, high-strength light LC35 concrete was transported to working-yard by transport mixer in 1 hour, before entering pump, carry out the concrete detection sampling of LC35, if entering before pump after testing flowed divergence between 450mm～550mm, meeting can pumping requirement, prepares pumping;
Second step, pumping profit pipe mortar, the volume of required profit pipe mortar is between whole layout pump line total volume 1/3rd volume～bis-/mono-volumes;
The 3rd step, starts pumping LC35 concrete at once, and round-the-clock pumping, until LC35 concrete pump is delivered to out to pumping hole, can suspend pumping, now as required mobile pump line to casting position;
The 4th step, until LC35 concrete placement, when the floor construction, the LC35 concrete structure integral body that relies on the mobility of LC35 concrete self and density to make to contain light ceramic is closely knit, and in casting process, should not carry out any construction of vibrating;
The 5th step, after LC35 concrete placement completes, wiping one's face in the time of should strengthening initial set, and before final set, carry out press polish and wipe one's face, make the concrete surface of LC35 floating without haydite, guarantee the structural integrity of haydite concrete.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891903A (en) * | 2015-05-21 | 2015-09-09 | 上海建工材料工程有限公司 | Adjustable setting mortar capable of being superhighly pumped |
| CN105152591A (en) * | 2015-08-08 | 2015-12-16 | 常州大学 | Preparation of LC35-grade lightweight aggregate structural concrete |
| CN105523737A (en) * | 2015-12-25 | 2016-04-27 | 邢台建工商品混凝土有限公司 | Lightweight ceramsite concrete and preparation method thereof |
| CN105888254A (en) * | 2016-04-13 | 2016-08-24 | 上海建工建集团有限公司 | Light aggregate concrete high-rise pumping construction method |
| CN107673693A (en) * | 2017-09-30 | 2018-02-09 | 中交公路长大桥建设国家工程研究中心有限公司 | Suppress the lightweight concrete that aggregate floats |
| CN109467355A (en) * | 2018-10-09 | 2019-03-15 | 蒙凤英 | A kind of lightweight concrete preparation method containing aeroge |
| CN112374822A (en) * | 2020-11-19 | 2021-02-19 | 石家庄金隅混凝土有限公司 | Pumping structure lightweight aggregate concrete and preparation method thereof |
| CN114956712A (en) * | 2022-03-30 | 2022-08-30 | 陕西建工集团混凝土有限公司 | LC40 all-light pumping ceramsite concrete and preparation method thereof |
| US11766807B2 (en) | 2017-01-15 | 2023-09-26 | Michael George BUTLER | Apparatuses and systems for and methods of generating and placing zero-slump-pumpable concrete |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530501A (en) * | 2003-03-10 | 2004-09-22 | 张英保 | Light cast-in-situs concrete wallboard |
| KR100837809B1 (en) * | 2007-12-06 | 2008-06-13 | 충남대학교산학협력단 | Manufacturing methods of multi -functional marine ecosystem friendly concrete for recycling of resource utilizing coal ash, reaction irritant, water glass and new materials for reinforcement |
| CN101928127A (en) * | 2010-08-30 | 2010-12-29 | 武汉海剑工贸有限责任公司 | Super-light aggregate concrete for long-distance homogeneous pumping construction and preparation method thereof |
| CN102838331A (en) * | 2012-09-22 | 2012-12-26 | 河北众诚新型建材有限公司 | Formula of pumping light aggregate concrete |
-
2014
- 2014-06-25 CN CN201410288064.6A patent/CN104016641B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530501A (en) * | 2003-03-10 | 2004-09-22 | 张英保 | Light cast-in-situs concrete wallboard |
| KR100837809B1 (en) * | 2007-12-06 | 2008-06-13 | 충남대학교산학협력단 | Manufacturing methods of multi -functional marine ecosystem friendly concrete for recycling of resource utilizing coal ash, reaction irritant, water glass and new materials for reinforcement |
| CN101928127A (en) * | 2010-08-30 | 2010-12-29 | 武汉海剑工贸有限责任公司 | Super-light aggregate concrete for long-distance homogeneous pumping construction and preparation method thereof |
| CN102838331A (en) * | 2012-09-22 | 2012-12-26 | 河北众诚新型建材有限公司 | Formula of pumping light aggregate concrete |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891903A (en) * | 2015-05-21 | 2015-09-09 | 上海建工材料工程有限公司 | Adjustable setting mortar capable of being superhighly pumped |
| CN105152591A (en) * | 2015-08-08 | 2015-12-16 | 常州大学 | Preparation of LC35-grade lightweight aggregate structural concrete |
| CN105523737A (en) * | 2015-12-25 | 2016-04-27 | 邢台建工商品混凝土有限公司 | Lightweight ceramsite concrete and preparation method thereof |
| CN105888254A (en) * | 2016-04-13 | 2016-08-24 | 上海建工建集团有限公司 | Light aggregate concrete high-rise pumping construction method |
| US11766807B2 (en) | 2017-01-15 | 2023-09-26 | Michael George BUTLER | Apparatuses and systems for and methods of generating and placing zero-slump-pumpable concrete |
| CN107673693A (en) * | 2017-09-30 | 2018-02-09 | 中交公路长大桥建设国家工程研究中心有限公司 | Suppress the lightweight concrete that aggregate floats |
| CN109467355A (en) * | 2018-10-09 | 2019-03-15 | 蒙凤英 | A kind of lightweight concrete preparation method containing aeroge |
| CN112374822A (en) * | 2020-11-19 | 2021-02-19 | 石家庄金隅混凝土有限公司 | Pumping structure lightweight aggregate concrete and preparation method thereof |
| CN114956712A (en) * | 2022-03-30 | 2022-08-30 | 陕西建工集团混凝土有限公司 | LC40 all-light pumping ceramsite concrete and preparation method thereof |
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Address after: 200120 Southwest District, 2123 Pudong Road, Pudong New Area, Shanghai. Co-patentee after: SHANGHAI CONSTRUCTION NO.1 (Group) Co.,Ltd. Patentee after: Shanghai Construction Engineering Building Materials Technology Group Co., Ltd Address before: 200135 3E-1178 room, No. 2123 Pudong Road, Shanghai, Pudong New Area Co-patentee before: SHANGHAI CONSTRUCTION NO.1 (Group) Co.,Ltd. Patentee before: SHANGHAI JIANGONG CONSTRUCTION MATERIAL Co.,Ltd. |