CN107902997A - A kind of pumpable weight concrete - Google Patents
A kind of pumpable weight concrete Download PDFInfo
- Publication number
- CN107902997A CN107902997A CN201711250100.XA CN201711250100A CN107902997A CN 107902997 A CN107902997 A CN 107902997A CN 201711250100 A CN201711250100 A CN 201711250100A CN 107902997 A CN107902997 A CN 107902997A
- Authority
- CN
- China
- Prior art keywords
- slag
- parts
- aggregate
- weight
- pumpable
- 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.)
- Granted
Links
- 239000002893 slag Substances 0.000 claims abstract description 58
- 239000004568 cement Substances 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000011398 Portland cement Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 14
- 238000005086 pumping Methods 0.000 abstract description 14
- 239000002002 slurry Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 7
- 229910052742 iron Inorganic materials 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000013459 approach Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000004576 sand Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229910000635 Spelter Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/0031—Heavy materials, e.g. concrete used as ballast material
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- 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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of pumpable weight concrete, it includes the raw material of following parts by weight：200 250 parts of cement, 85 90 parts of water, 68 parts of water-reducing agent, 950 1100 parts of slag fine aggregate, 600 800 parts of slag coarse aggregate.The present invention is only with slag as aggregate, other iron ores etc. are not used to be used as aggregate, solve the problems, such as shortage of resources and environmental pollution at the same time, an effective approach is have found for the processing of industrial slag, reduce slag heap to be rivals in a contest the pollution of environment, there is very high Social benefit and economic benefit；The pumpable weight concrete unit weight ＞ 4000kg/m of the present invention3, good fluidity, maintains parcel of the slurry to heavy aggregate, no aggregate sinkage, meets pumping construction requirement in the case of the big flow rate of pumping procedure.
Description
Technical field
The invention belongs to technical field of building construction, especially a kind of pumpable weight concrete.
Background technology
At present, the unit weight of the normal concrete produced using conventional sandstone is generally in 2350~2450kg/m3Between, for
Unit weight is more than 2500kg/m3Weight concrete, need to use larger the gathering materials of unit weight could realize that weight concrete is generally used for
Structure weight and protection use.At present both at home and abroad the major way of production weight concrete be with the larger material part of unit weight or
Gathering materials in replacing whole general goods concrete, to improve the unit weight of concrete.The larger material of unit weight mainly have iron ore,
Iron ore, barite, iron block, spelter, lead, slag etc., but in the economic structure of current resource scarcity type, the energy is increasingly
Anxiety, rapid rise of price, the production cost of weight concrete can be greatly increased using expensive smart iron ore etc. as concrete aggregate,
The waste of resource is caused, reduces the economic benefit of enterprise.
Slag is the waste residue produced in steelmaking process, and quantity is about l5%~20% of output of steel, the steel in China in 2013
Yield is 1,600,000,000 tons, is ranked first in the world.Due to the raising and development of steel production technology, big steel slag is set to throw aside accumulation, no
Only become a big public hazards of pollution environment, and take a large amount of soils.In order to adapt to development of iron ＆ steel industry and sustainable development
Need, in recent years, scientific research personnel gradually begins to focus on the utility value of slag, pays attention to study the comprehensive utilization technique of slag,
Seek number of ways and utilize slag.And steel slag concrete is exactly a kind of comparison effectively and can largely consume the utilization side of slag
Formula.In general, 2500~3000kg/m can be reached by the use of steel slag instead stone as coarse-fine aggregate unit weight3.Replaced with Steel-slag
Stone for environmental protection, reduces project cost, turns waste into wealth, promotes circular economy to build as aggregate production weight concrete
Setting tool is of great significance.
However, it is 2500~3000kg/m by the use of steel slag instead stone as the concrete density of coarse-fine aggregate3, at present also not
See unit weight more than 4000g/m3Slag weight concrete report, and weight concrete due to its own unit weight it is big, unit weight
Larger aggregate easily sinks to separating in concrete, and certain difficulty is brought to pumping.And such as need to pump in the construction process
Construction, need to ensure that concrete has preferable mobility, and large fluidity can accelerate heavy aggregate to sink, under pumping pressure effect more
It is easy generation heavy aggregate and slurry segregation phenomenon, causes plugging and operation cannot be continued, therefore most of super weight concrete
Non- pumping mode is used in work progress, seriously constrains unit weight more than 4000g/m3Weight concrete apply model
Enclose, be also unfavorable for the propulsion of project progress.
The content of the invention
The purpose of the present invention is overcome steel slag concrete unit weight existing in the prior art low and bone is weighed in pumping procedure
The deficiencies of expecting phenomenon separated with slurry, there is provided a kind of unit weight is more than 4000g/m3Pumpable weight concrete.
The technical solution adopted by the present invention to solve the technical problems is：A kind of pumpable weight concrete, including it is following
The raw material of parts by weight：200-250 parts of cement, 85-90 parts of water, 6-8 parts of water-reducing agent, 950-1100 parts of slag fine aggregate, slag are thick
600-800 parts of aggregate.
Preferably, the slag fine aggregate modulus of fineness 2.5~2.9, meets continuous grading requirement.
Preferably, the slag fine aggregate apparent density >=5730kg/m3, bulk density >=3200kg/m3, porosity≤
44%.
Preferably, the slag coarse aggregate size is 5-25mm, meets continuous grading requirement.
Preferably, the slag coarse aggregate apparent density >=4550kg/m3, bulk density >=2720kg/m3, porosity≤
40%.
Preferably, the cement selection Lafarge PO42.5R portland cements.
Preferably, the water-reducing agent selects high performance water reducing agent of polyocarboxy acid.
The beneficial effects of the invention are as follows：The present invention, as aggregate, does not use other iron ores etc. only with slag
As aggregate, while solve the problems, such as shortage of resources and environmental pollution, the processing for industrial slag have found one
Effective approach, reduces slag heap and is rivals in a contest the pollution of environment, have very high Social benefit and economic benefit；The present invention's can
Pump weight concrete unit weight ＞ 4000kg/m3, good fluidity, slurry pair is maintained in the case of the big flow rate of pumping procedure
The parcel of heavy aggregate, no aggregate sinkage, meets pumping construction requirement.
Embodiment
With reference to embodiment, the present invention is further described.
A kind of pumpable weight concrete of the present invention, includes the raw material of following parts by weight：200-250 parts of cement, water 85-
90 parts, 6-8 parts of water-reducing agent, 950-1100 parts of slag fine aggregate, 600-800 parts of slag coarse aggregate.
The slag fine aggregate modulus of fineness 2.5-2.9, meets that continuous grading requires, slag fine aggregate apparent density >=
5730kg/m3, bulk density >=3200kg/m3, porosity≤44%.The slag coarse aggregate size is 5-25mm, is met continuous
Grading requirement, slag coarse aggregate apparent density >=4550kg/m3, bulk density >=2720kg/m3, porosity≤40%.Slag is thin
The modulus of fineness of aggregate is between 2.5-2.9, if modulus of fineness is smaller, concrete entirety water requirement will increase, concrete
Workability is deteriorated, and can not meet pumping construction requirement；Water consumption increase can also increase volume ratio of the water in whole system at the same time,
Weight concrete entirety unit weight is reduced, causes unit weight not meet the requirements；If modulus of fineness is larger, concrete water-retaining property is poor,
Easily there are the bad phenomenons such as bleeding isolation, cause concrete plugging, can not pump.Slag coarse aggregate size is in the continuous levels of 5-25mm
Match somebody with somebody, coordinate with the modulus of fineness of the 2.5-2.9 of slag fine aggregate, ensure the requirement of weight concrete workability.Slag fine aggregate table
See density >=5730kg/m3, slag coarse aggregate apparent density >=4550kg/m3, the unit weight of one side aggregate directly affects counterweight and mixes
The unit weight of soil is coagulated, if unit weight is too low, can not meet 4000kg/m3It is required that while it is more than 4000kg/m in guarantee unit weight3It is required that
In the case of, the sand coarse aggregate ratio of weight concrete, i.e. slag fine aggregate ratio shared in weight material also should be suitable, sand coarse aggregate ratio mistake
It is low, weight concrete poor water retention property, easily occur bleeding isolation etc. bad phenomenon, can not meet pumping construction requirement, if sand coarse aggregate ratio compared with
Greatly, concrete cohesiveness is too big, and increase pumping resistance is also unfavorable for pumping.
Since ore class aggregate itself unit weight is limited, the weight concrete unit weight of preparation is also limited, so that seldom so far
See unit weight in 4000g/m3Weight concrete above.The composition form of concrete forms cement for cementitious material cement and water
Slurry, cement mortar and sand composition mortar, mortar parcel stone form concrete.Therefore it is main at present logical in terms of aggregate sinking is prevented
Cross higher gel material content, increase cement consistency compared with low water-cement ratio, prevent aggregate from sinking.The thin bone of slag that the present invention selects
The unit weight of material is more than the unit weight of slag coarse aggregate.The slag of the cement slurry parcel 950-1100 parts by weight of 285-340 parts by weight
Fine aggregate, since the fine aggregate weight of each is low with respect to the weight of each of coarse aggregate, the steel of 950-1100 parts by weight
Slag fine aggregate is easier to wrap up uniformly and is not easy in the cement slurry of 285-340 parts by weight.950-1100 weight at the same time
The slag fine aggregate of part and the cement slurry of 285-340 parts by weight are relatively large with reference to formed mortar unit weight, reduce sand
The bulk density difference of slurry and slag coarse aggregate, prevents coarse aggregate from sinking.The present invention i.e. in 950-1100 parts by weight slag fine aggregates and
Under the synergistic effect of 600-800 parts by weight slag coarse aggregates and water-reducing agent, cement and water proportioning, exist in guarantee concrete density
4000g/m3The bulk density difference of mortar and coarse aggregate is reduced while the above, prevents coarse aggregate from sinking, meets the requirement of pumping.
The cement selection Lafarge PO42.5R portland cements.
The water-reducing agent selects high performance water reducing agent of polyocarboxy acid.
Embodiment 1-3：
The raw material proportioning of embodiment 1-3 is as shown in table 1：
The pumpable weight concrete raw material proportioning of table 1
| Cement | Water | Water-reducing agent | Slag fine aggregate | Slag coarse aggregate | |
| Embodiment 1 | 400 | 170 | 12 | 1900 | 1600 |
| Embodiment 2 | 450 | 172 | 14 | 2050 | 1400 |
| Embodiment 3 | 500 | 175 | 16 | 2100 | 1300 |
Wherein cement selection Lafarge PO42.5R portland cements, water-reducing agent select high performance water reducing agent of polyocarboxy acid.
The slag fine aggregate of embodiment 1-3 and the design parameter of slag coarse aggregate are as shown in table 2：
The pumpable weight concrete raw material aggregate parameter of table 2
Proportioning according to table 1 weighs raw material and is configured to pumpable weight concrete, it is tested for the property, such as the institute of table 3
Show.
The pumpable weight concrete performance test of table 3
| Initial slump | Divergence | Design unit weight | Survey unit weight | 28d compression strength | |
| Embodiment 1 | 200 | 580 | 4082 | 4058 | 70 |
| Embodiment 2 | 210 | 600 | 4088 | 4062 | 76 |
| Embodiment 3 | 220 | 630 | 4091 | 4073 | 82 |
As shown in Table 3, the present invention reaches 4000g/m using slag as coarse-fine aggregate, unit weight3More than, 28d compression strength exists
More than 70, it is more than twice of general concrete；For the slump more than 200, workability is good, meets pumping construction requirement.
Claims (7)
1. a kind of pumpable weight concrete, it is characterised in that include the raw material of following parts by weight：200-250 parts of cement, water
85-90 parts, 6-8 parts of water-reducing agent, 950-1100 parts of slag fine aggregate, 600-800 parts of slag coarse aggregate.
A kind of 2. pumpable weight concrete according to claim 1, it is characterised in that the slag fine aggregate fineness mould
Number 2.5-2.9, meets continuous grading requirement.
3. a kind of pumpable weight concrete according to claim 2, it is characterised in that the slag fine aggregate is apparent close
Degree >=5730kg/m3, bulk density >=3200kg/m3, porosity≤44%.
4. a kind of pumpable weight concrete according to claim 1, it is characterised in that the slag coarse aggregate size is
5-25mm, meets continuous grading requirement.
5. a kind of pumpable weight concrete according to claim 4, it is characterised in that the slag coarse aggregate is apparent close
Degree >=4550kg/m3, bulk density >=2720kg/m3, porosity≤40%.
6. according to a kind of pumpable weight concrete of claim 1-5 any one of them, it is characterised in that the cement selection
Lafarge PO42.5R portland cements.
7. according to a kind of pumpable weight concrete of claim 1-5 any one of them, it is characterised in that the water-reducing agent choosing
Use high performance water reducing agent of polyocarboxy acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711250100.XA CN107902997B (en) | 2017-12-01 | 2017-12-01 | Pumpable counterweight concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711250100.XA CN107902997B (en) | 2017-12-01 | 2017-12-01 | Pumpable counterweight concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107902997A true CN107902997A (en) | 2018-04-13 |
| CN107902997B CN107902997B (en) | 2020-06-19 |
Family
ID=61848375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711250100.XA Active CN107902997B (en) | 2017-12-01 | 2017-12-01 | Pumpable counterweight concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107902997B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840595A (en) * | 2018-08-13 | 2018-11-20 | 成都宏基建材股份有限公司 | A kind of graphene concrete surface reinforcing agent and its application method |
| US10494302B1 (en) | 2018-07-11 | 2019-12-03 | King Fahd University Of Petroleum And Minerals | Heavyweight concrete containing steel slag |
| CN110655365A (en) * | 2019-10-30 | 2020-01-07 | 江南大学 | High-strength concrete with iron ore as aggregate and preparation method thereof |
| CN112239344A (en) * | 2020-10-20 | 2021-01-19 | 上海市建筑科学研究院有限公司 | Novel grouting reinforcement material and preparation method and application thereof |
| CN113754341A (en) * | 2021-09-24 | 2021-12-07 | 上海中冶环境工程科技有限公司 | Modifier for concrete, counterweight concrete, preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724441A (en) * | 2005-06-23 | 2006-01-25 | 上海宝钢冶金建设公司 | Formulating weight concrete using steel dregs as aggregate |
| CN102701670A (en) * | 2012-05-23 | 2012-10-03 | 上海宝田新型建材有限公司 | Resource utilization type steel-slag concrete |
| CN102775112A (en) * | 2012-08-15 | 2012-11-14 | 上海宝冶钢渣综合开发实业有限公司 | Non-pumping steel slag high-proportion concrete and preparation method thereof |
| CN105541217A (en) * | 2015-12-14 | 2016-05-04 | 上海中冶环境工程科技有限公司 | Impermeable concrete prepared from steel slags |
-
2017
- 2017-12-01 CN CN201711250100.XA patent/CN107902997B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724441A (en) * | 2005-06-23 | 2006-01-25 | 上海宝钢冶金建设公司 | Formulating weight concrete using steel dregs as aggregate |
| CN102701670A (en) * | 2012-05-23 | 2012-10-03 | 上海宝田新型建材有限公司 | Resource utilization type steel-slag concrete |
| CN102775112A (en) * | 2012-08-15 | 2012-11-14 | 上海宝冶钢渣综合开发实业有限公司 | Non-pumping steel slag high-proportion concrete and preparation method thereof |
| CN105541217A (en) * | 2015-12-14 | 2016-05-04 | 上海中冶环境工程科技有限公司 | Impermeable concrete prepared from steel slags |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10494302B1 (en) | 2018-07-11 | 2019-12-03 | King Fahd University Of Petroleum And Minerals | Heavyweight concrete containing steel slag |
| CN108840595A (en) * | 2018-08-13 | 2018-11-20 | 成都宏基建材股份有限公司 | A kind of graphene concrete surface reinforcing agent and its application method |
| CN110655365A (en) * | 2019-10-30 | 2020-01-07 | 江南大学 | High-strength concrete with iron ore as aggregate and preparation method thereof |
| CN112239344A (en) * | 2020-10-20 | 2021-01-19 | 上海市建筑科学研究院有限公司 | Novel grouting reinforcement material and preparation method and application thereof |
| CN113754341A (en) * | 2021-09-24 | 2021-12-07 | 上海中冶环境工程科技有限公司 | Modifier for concrete, counterweight concrete, preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107902997B (en) | 2020-06-19 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A pumpable heavy concrete Granted publication date: 20200619 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: CHENGDU HUGE CONSTRUCTION MATERIAL Co.,Ltd. Registration number: Y2024980029487 |
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