CN101638310B - Self-compaction concrete containing zeolite powder and preparation method thereof - Google Patents
Self-compaction concrete containing zeolite powder and preparation method thereof Download PDFInfo
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- CN101638310B CN101638310B CN2009101775459A CN200910177545A CN101638310B CN 101638310 B CN101638310 B CN 101638310B CN 2009101775459 A CN2009101775459 A CN 2009101775459A CN 200910177545 A CN200910177545 A CN 200910177545A CN 101638310 B CN101638310 B CN 101638310B
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- zeolite powder
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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
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00103—Self-compacting mixtures
-
- 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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- 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 self-compaction concrete containing zeolite powder and a preparation method thereof. The self-compaction concrete comprises the following components according to parts by weight: 362-372 parts of cement, 150 parts of fly ash, 8-18 parts of zeolite powder, 800 parts of river sand, 850 parts of broken stone, 172 parts of water and 7.95 parts of polycarboxylic acid water reducer. The components are evenly stirred according to the requirement to obtain a product of the invention. By adopting the invention, the property of the concrete can be effectively improved, the fluidity and the cohesion property of a mixture are good, isolation does not occur, the bleeding rate is smaller, and the property of a filling template is greatly enhanced. The invention is especially suitable for the continuous pouring of concrete of large square quantity applied to a large structure with high steel bar density and abnormal curved faces and enables the concrete to carry out self filling and compaction in the template.
Description
Technical field
The present invention relates to a kind of concrete, relate in particular to a kind of zeolite powder self-compacting concrete and preparation method thereof that contains.
Background technology
In concrete construction, generally, pumping is generally adopted in onsite concrete, and hand-held vibrating head shake puddling is real, or cooperates the auxiliary vibrations of attached type vibrator to make it closely knit.But in special construction, for example reinforcing bar is intensive or the member build is complicated, huge, the part scope of member can't be carried out machinery and shaken and smash, thereby can not guarantee concrete closely knit.Therefore, need to adopt high performance flowing concrete, under the condition of not using the equipment of vibrating, realize concrete self-compacting, satisfy construction quality and construction needs.
Self-compacting concrete is harsher to the requirement of starting material and proportioning, and the stability of its serviceability also be difficult to guarantee, particularly self-compacting concrete occur hardening easilier, bleeding, interior glutinous poly-property is on the low side, through the time phenomenons such as loss is bigger than normal generation.Studies show that through us, under identical proportioning, dose in right amount zeolite powder, can effectively improve concrete serviceability, although zeolite powder is all had report in the application of self-compacting concrete both at home and abroad, but, to this Core Technology Research of zeolite powder mix proportions but seldom.
Summary of the invention
Technical problem to be solved by this invention provides a kind of self-compacting concrete and preparation method thereof, has overcome the shortcoming of above-mentioned prior art, can effectively improve concrete performance, make flowability and the glutinous poly-property of mix good, do not emanate, bleeding rate is less, and the filling template performance improves greatly.Especially be fit to be applied to the generous amount continuous concreting of high reinforcing bar density, special-shaped curved large scale structure, and it is closely knit that concrete is filled voluntarily in template.
Technical problem to be solved by this invention is achieved through the following technical solutions:
A kind of zeolite powder self-compacting concrete that contains, composed of the following components according to this self-compacting concrete of weight part: cement 372-362, flyash 150, zeolite powder 8-18, river sand 800, rubble 850, water 172, poly carboxylic acid series water reducer 7.95.
The content of above-mentioned self-compacting concrete mesolite powder is preferably 10.
Described rubble is that medium stone gathers materials and coarse crushing stone gathers materials in the continuous grading rubble of ratio preparation in 1: 9.Described medium stone aggregate size 5-10mm, described coarse crushing stone aggregate size 10-20mm.
Described flyash is the I level; Described cement is P.O 42.5 cement; The fineness modulus of described river sand is 2.5, and grating is continuous.
Prepare the method that the present invention contains the zeolite powder self-compacting concrete, include following steps:
(1) uses first the abundant moistening stirrer of sand-cement slurry of the water identical with self-compacting concrete and gelling material ratio and contain concrete container;
(2) each component starting material of weighing the reinforcement of concrete in proportion;
(3) successively rubble, cement, flyash, zeolite powder, river sand are joined in the stirrer, build stirrer, stir the several seconds, make its abundant uniform mixing;
(4) while stirring load weighted poly carboxylic acid series water reducer and mixing water are slowly joined in the said mixture, continue to stir the several seconds, namely obtain this product.
Churning time in the described preparation process is 60-120 second.
Whole whipping process at room temperature gets final product; Be applied to construction and produce, less than 30 ℃, various starting material are avoided sunlight direct irradiation or rainwater shower at temperature in suggestion, the various raw-material temperature of reduce, the stable performance that keeps material.
Because selected suitable zeolite powder mixed ratio example, the zeolite powder admixture accounts for the 1.5-3.4% of gelling material (cement, flyash and zeolite powder), self-compacting concrete of the present invention has reached following concrete technical indicator:
(1) it is good that concrete goes out the machine workability, the phenomenons such as segregation, bleeding do not occur.
(2) slump divergence 700 ± 50mm (Slump Time losing of Large≤20mm/h);
(3) education resistance: the T50 controlling test is in 10s;
(4) fillibility: U-shaped case (Type B) test height is more than the 320mm, and the discrepancy in elevation≤5mm.
(5) time of falling the slump is controlled at 5-9 second.
The present invention has the following advantages:
The present invention guarantees well self-compacting ability of concrete, has realized the construction of the member that unconditionally vibrates; Improve concrete surface quality, realized the specification of quality of fair-faced concrete; Reduce labour intensity, improved production efficiency, though folk prescription concrete cost slightly is improved, greatly reduced the workmen, the integration engineering cost, general effect is desirable; Greatly reduce construction noise, realized green construction.
Embodiment
In conjunction with specific embodiments the present invention is further described below.
Embodiment 1
Self-compacting concrete in the present embodiment, composed of the following components according to this self-compacting concrete of weight part: cement 372, flyash 150, zeolite powder 8, river sand 800, rubble 850, water 172, poly carboxylic acid series water reducer 7.95.
Cement, flyash, river sand, rubble, poly carboxylic acid series water reducer, zeolite powder are market and buy.
Poly carboxylic acid series water reducer is bought the PCA poly carboxylic acid series water reducer of producing from the Shenzhen Maidi Concrete Additive Co., Ltd, this water reducer is light brown liquid, density is 1.07g/ml, and solid content is 20%, pH value 6-8, alkali content≤0.2%, bleeding rate ratio≤20%, water-reducing rate reaches 30%, has good consistency with different varieties cement and adulterant, can obviously reduce concrete shrinkage, significantly improve volume stability of concrete and weather resistance.Zeolite powder is bought the zeolite powder of producing from Central Plains, Xinyang on-metallic article limited liability company, wherein specific surface area 7000g/cm
3More than, inhale ammonium value 〉=100mmmol/100g, water demand ratio≤115%, dioxide-containing silica 〉=more than 65%.
Prepare self-compacting concrete of the present invention according to following steps:
(1) uses first the abundant moistening stirrer of sand-cement slurry of the water identical with self-compacting concrete and gelling material ratio and contain concrete container;
(2) weigh up in proportion each component starting material (kg/m of the reinforcement of concrete
3): weighing cement 372, flyash 150, zeolite powder 8, river sand 800,5-10mm rubble 85,10-20mm rubble 765, water 172 and admixture 7.95;
(3) successively rubble, cement, flyash, zeolite powder, river sand are joined in the stirrer, build stirrer, stirred 60 seconds, make its abundant uniform mixing;
(4) while stirring load weighted poly carboxylic acid series water reducer and mixing water are slowly joined in the said mixture, continue to stir 120 seconds, namely obtain this product.
Each component proportion data of prepared self-compacting concrete are as shown in table 1.
Embodiment 2
Self-compacting concrete in the present embodiment, composed of the following components according to this self-compacting concrete of weight part: cement 370, flyash 150, zeolite powder 10, river sand 800, rubble 850, water 172, poly carboxylic acid series water reducer 7.95.
Raw materials used and preparation process is identical with embodiment's 1, and each component proportion data of prepared self-compacting concrete are as shown in table 1.
Embodiment 3
Self-compacting concrete in the present embodiment, composed of the following components according to this self-compacting concrete of weight part: cement 362, flyash 150, zeolite powder 18, river sand 800, rubble 850, water 172, poly carboxylic acid series water reducer 7.95.
Raw materials used and preparation process is identical with embodiment's 1, and each component proportion data of prepared self-compacting concrete are as shown in table 1.
Each component proportion data (kg/m of table 1
3)
Embodiment 4
To the self-compacting concrete for preparing among the embodiment 1-3, carried out respectively the detection of specific performance index, the result is as shown in table 2.
Table 2 concrete specifically detects index
Of the present inventionly contain that the zeolite powder self-compacting concrete has solved that hardening appears in self-compacting concrete easily, bleeding, interior glutinous poly-property is on the low side, through the time phenomenons such as loss is bigger than normal generation.By having selected suitable zeolite powder mixed ratio example, the zeolite powder admixture accounts for the 1.5-3.4% of gelling material (cement, flyash and zeolite powder), and self-compacting concrete of the present invention has reached following concrete technical indicator:
(1) it is good that concrete goes out the machine workability, the phenomenons such as segregation, bleeding do not occur;
(2) slump divergence 700 ± 50mm (Slump Time losing of Large≤20mm/h);
(3) education resistance: the T50 controlling test is in 10s;
(4) fillibility: U-shaped case (Type B) test height is more than the 320mm, and the discrepancy in elevation≤5mm;
(5) time of falling the slump is controlled at 5-9 second.
Claims (2)
1. one kind contains the zeolite powder self-compacting concrete, composed of the following components according to this self-compacting concrete of weight part: cement 372-362, flyash 150, zeolite powder 8-18, river sand 800, rubble 850, water 172, poly carboxylic acid series water reducer 7.95; Described rubble is that medium stone gathers materials and coarse crushing stone gathers materials in the continuous grading rubble of ratio preparation in 1: 9; Described medium stone aggregate size 5-10mm, described coarse crushing stone aggregate size 10-20mm;
The described zeolite powder self-compacting concrete that contains prepares according to following steps:
(1) uses first the abundant moistening stirrer of sand-cement slurry of the water identical with self-compacting concrete and gelling material ratio and contain concrete container;
(2) each component starting material of weighing the reinforcement of concrete in proportion;
(3) successively rubble, cement, flyash, zeolite powder, river sand are joined in the stirrer, build stirrer, stir 60-120 second, make its abundant uniform mixing;
(4) while stirring load weighted poly carboxylic acid series water reducer and mixing water are slowly joined in the said mixture, continue to stir the several seconds, namely obtain this product.
2. the zeolite powder self-compacting concrete that contains as claimed in claim 1, described flyash is the I level; Described cement is 42.5 cement P.0; The fineness modulus of described river sand is 2.5, continuous grading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101775459A CN101638310B (en) | 2009-09-15 | 2009-09-15 | Self-compaction concrete containing zeolite powder and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101775459A CN101638310B (en) | 2009-09-15 | 2009-09-15 | Self-compaction concrete containing zeolite powder and preparation method thereof |
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| CN101638310A CN101638310A (en) | 2010-02-03 |
| CN101638310B true CN101638310B (en) | 2013-10-16 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515646B (en) * | 2011-12-15 | 2016-06-29 | 中建三局建设工程股份有限公司 | A kind of antifreeze anticorrosion durable concrete and preparation method thereof |
| CN102505586A (en) * | 2012-01-04 | 2012-06-20 | 中铁二局股份有限公司 | Construction method of low-shrinkage and self-compacting concrete |
| CN104230228B (en) * | 2014-08-25 | 2016-04-27 | 安徽升翔建设工程有限公司 | A kind of high-temperature resistant antibacterial concrete and preparation method thereof |
| CN107337398B (en) * | 2017-03-07 | 2020-04-14 | 中交四航工程研究院有限公司 | Low-shrinkage self-compacting concrete for steel shell immersed tube, and preparation method and application thereof |
| CN109250958A (en) * | 2017-07-14 | 2019-01-22 | 中国二冶集团有限公司 | Extremely frigid zones self-compacting concrete |
| CN110294615B (en) * | 2019-07-31 | 2021-10-26 | 深圳市市政设计研究院有限公司 | High-fluidity paving concrete and preparation method thereof |
| CN110467399A (en) * | 2019-09-10 | 2019-11-19 | 江西科技学院 | A kind of self-compacting concrete and preparation method thereof using Copper Slag |
-
2009
- 2009-09-15 CN CN2009101775459A patent/CN101638310B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 吴小强 等.自密实混凝土在武汉火车站三跨连续梁中的研究和应用.《建设工程混凝土应用新技术》.2009,157-161. * |
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| CN101638310A (en) | 2010-02-03 |
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Granted publication date: 20131016 Termination date: 20190915 |