CN1062531C - Cement for quick reparing concrete - Google Patents
Cement for quick reparing concrete Download PDFInfo
- Publication number
- CN1062531C CN1062531C CN96118951A CN96118951A CN1062531C CN 1062531 C CN1062531 C CN 1062531C CN 96118951 A CN96118951 A CN 96118951A CN 96118951 A CN96118951 A CN 96118951A CN 1062531 C CN1062531 C CN 1062531C
- Authority
- CN
- China
- Prior art keywords
- cement
- concrete
- quick
- reparing
- grinding
- 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.)
- Expired - Fee Related
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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
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/105—Magnesium oxide or magnesium carbonate 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
Abstract
The present invention relates to cement for quick repairing concrete, which belongs to inorganic building materials. Filling materials such as materials containing magnesium, materials containing phosphorus, dolomite, quartzite, etc., and additive such as powder coal ash, glass fiber, retarder, etc., are crushed, grades, dried and milled into powder single component products. The compressive strength of the present invention can reach 45MPa in 2 hours. The present invention is suitable for the rapid repair of load bearing concrete such as highways, roadways, the ground of factories, runways of airports, cover plates of bridges, etc. When the present invention is used, the cement is proportioned into fluidity mortar by a proper amount of water to be injected into damage positions of concrete. The present invention can be used in the ambient temperature range of-10 to 38 DEG C. Repaired concrete can recover permanence in several hours for use.
Description
Cement for quick reparing concrete belongs to building material field, more particularly, belongs to carrying concrete repair materials.
Prepare starting material or macromolecule chemical industry material with concrete the carrying concrete that damages repaired, summarize and get up to have following several problem:
1, repair time is long;
2, low with the old concrete bonding strength;
3, construction and conservation system are strict;
4, poor durability;
5, overall cost or material cost height.
The fast setting concrete of United States Patent (USP) 3879209 (1995,4,22) and 4059455 (1977,11,22) narration, form by liquid ingredient and solid ingredient two portions, effective composition of liquid ingredient is an ammonium phosphate, solid ingredient is formed by containing magnesium material and gathering materials, and at the construction field (site) two kinds is mixed by a certain percentage and can use.This product can access the rapid-curing purpose really.But also there is following deficiency:
1, storing difficulty, because it is made up of two components, especially ammonium phosphate solution is along with shelf-time and variation of ambient temperature, its polymerization degree and solubleness all can change, and have a strong impact on concrete performance.
2, operable time is short.
(a kind of native mud that coagulates has soon been narrated in 33733 (1984,9,8) to EPO, and it contains magnesium material by powdery phosphorated material and powdery and forms.The powdery phosphorated material is to contain the Vanadium Pentoxide in FLAKES solution absorbs in porous material, by drying and dehydrating, levigate forming.Only need at the construction field (site) cement, common gather materials and suitable quantity of water mixes, promptly can be used for concrete repair.This product is stored, is transported and uses all more convenient.But there is following several problem:
1, porous material absorption contains P
2O
5The mud shape field dehydration that solution forms is difficulty, and drying plant is had strong corrodibility, and drying plant need adopt the expensive stainless steel manufacturing.
2, dried material grinding difficulty is stopped up grinding machine easily, the processing of usually being forced to stop production.
3, early strength is lower, and ultimate compression strength can only be transported to 28MPa in the highest 2 hours.
Purpose of the present invention exactly will be for various concrete reparations provide a kind of desirable material, and the suitable for producing of this material and using method, satisfy the following performance of repairing fast on the coagulation:
Intensity wanted high in 1 hour, shortened the duration of service because of repairing construction and maintenance interruption old concrete as far as possible;
2, with old concrete interfacial adhesion strength height, can be frozen into an integral body with old concrete.
3, there is the suitable operating time, in the ambient temperature range of broad, can satisfies and mix and stir, laying, closely knit, the requirement of operation such as trowel light.
4, good endurance can stand the erosion of various natural causes, makes old concrete obtain permanent reparation.
Purpose of the present invention can realize by following measure:
Cement for quick reparing concrete is by containing magnesium material, phosphorated material, packing material and additive, and the content of each component is: contain magnesium material 5-50%, phosphorated material 5-50, packing material 0-85%, additive 1-9%.Wherein containing magnesium material is that content of magnesia is 50-88% through high-temperature calcination more than 1500 ℃, through grinding to 4000-10000cm
2The fine powder of/g Blain specific surface; Phosphorated material is that water-soluble phosphorus pentoxide content is 15-60%, through grinding to the fine powder of particle diameter less than 0.6mm; Packing material is dolomite, quartzite, basalt, andesite or washing river sand, and particle diameter is greater than 0.15mm, and less than 3.0mm, moisture content is less than 0.2%; Additive is a filamentary material, and flyash and retardant, filamentary material are glass fibre, steel fiber, cotton fibre, fibrous magnesium silicate.Wherein, the length of filamentary material is 0.5-1.0mm, and length-to-diameter ratio should be greater than 20, and usage quantity is the 0.5-2% of cement for quick reparing concrete weight; Fineness of pulverized-coal ash is 3000-6000cm
2/ g Blain specific surface, carbon content must not surpass 8.0%, and consumption is the 1.5-5% of cement for quick reparing concrete weight; The retardant consumption is the 0.2-2.0% of cement for quick reparing concrete weight.
The production technique of cement for quick reparing concrete is:
1, containing magnesium material grinding in ball milling (air swept mill or the disc type mill) machine is 4000-10000cm to Blain specific surface
2The fine powder of/g;
2, phosphorated material in disc type mill (or other patterns mills) machine grinding to the fine powder of particle diameter less than 0.6mm;
3, packing material through fragmentation, classification, be dried into particle diameter less than 3.0mm, greater than 0.15mm, moisture content is lower than 0.2% granulated material;
4, above material and flyash, filamentary material are mixed, be packaged into bag, be cement for quick reparing on product-coagulation of the present invention.
The fast rapid-result cement of repairing of concrete has following performance:
1, the operating time, can in 30 minutes, regulate;
2,2 hours anti-folding, ultimate compression strength can reach 8.0 and 45.0MPa respectively;
3,28 days anti-folding, ultimate compression strength can reach 12.0 and 70.0MPa;
4, can reach 3.0Pa with the old concrete interfacial adhesion strength;
5, wear-resistant, the rate of expanding with heat and contract with cold and C
40The class g cement concrete is suitable;
6, sulfate resistance ability 〉=85%;
7, anti-outlet capacity 〉=70%;
8, freeze-thaw-ability 〉=90%;
9, production cost is lower than 350 yuan/ton.
Cement for quick reparing concrete is applicable to highway pavement, airport runways, bridge cover plate, the quick reparation of various pressure-bearing concrete local damages place such as fabrication facility floor, public works, and can in a few hours, recover permanent use.
The cement for quick reparing concrete construction with maintenance process is:
1, the loose and exotic at place to be repaired is rejected totally, till solid basis comes out;
2, according to treating that the volume size of repairing place calculates the consumption of cement for quick reparing concrete and water;
3, water is injected a container.If this moment, envrionment temperature was higher, require the longer operating time again, suitable retardant can be added in the entry, fully stirring makes it to dissolve fully.
4, water is injected with cement for quick reparing in limit stirring, limit, forces to stir to make it to become flowability (or plasticity) mortar in 2-3 minute;
5, rapidly the mortar that stirs is injected the place to be repaiied that has cleared up, spread out, closely knit, leveling, trowel light;
6, maintenance in natural air treats that the repair material surface temperature reduces to envrionment temperature and can come into operation;
7, if when treating that the degree of depth (or thickness) of repairing place is big, can layering handle.Make cyclopean concrete or dry rubble bottom with suitably big or small slabstone and cement for quick reparing concrete mortar earlier, carry out surface layer with the cement for quick reparing concrete mortar again and handle;
8, stir from cement for quick reparing concrete and water, within 4 hours, must not carry out wet curing.
Embodiment:
Material is formed:
Make the cement for quick reparing concrete of 1000kg, each component content is as follows:
| Contain magnesium material | Phosphorated material | Packing material | Additive | |||
| The dead roasting wagnerite | Ammonium phosphate | Rhombspar | River sand | Flyash | Molasses | |
| Example 1 | 18％ | 16％ | 61％ | / | 5％ | / |
| Example 2 | 12％ | 9％ | / | 76％ | 2％ | 1.0％ |
Working method:
(1) with dead roasting wagnerite grinding to 4200cm
2/ g;
(2) ammonium phosphate is crushed to screen over-size is 10% on the 0.5mm round hole sieve;
(3) become particle diameter greater than 0.15mm broken rhombspar or river sand separation, less than 3.0mm, drying moisture content is 0.2%;
(4) flyash and molasses are original state;
(5) above various materials are become two kinds of cement for quick reparing concrete by example 1, example 2 mixed.
Applied environment and test performance.
Claims (3)
1, a kind of cement for quick reparing concrete, it is formed by containing magnesium material, phosphorated material, packing material and additive, and the content of each component is for containing magnesium material 5-50%, phosphorated material 5-50%, packing material 0-85%, additive 1-9%;
It is characterized in that: the described magnesium material that contains is through high-temperature calcination more than 1500 ℃, and content of magnesia is 50-88%, through grinding to 4000-10000cm
2The fine powder of/g Blain specific surface:
Described phosphorated material is that water-soluble phosphorus pentoxide content is 15-60%, through grinding to the fine powder of particle diameter less than 0.6mm;
Described packing material is dolomite, quartzite, basalt, andesite or washing river sand, and particle diameter is greater than 0.15mm, and less than 3.0mm, moisture content is less than 0.2%:
Additive is a filamentary material, and flyash and retardant, filamentary material are glass fibre, steel fiber, cotton fibre, fibrous magnesium silicate.
2, cement for quick reparing concrete according to claim 1, the length that it is characterized in that described filamentary material is 0.5-1.0mm, and length-to-diameter ratio should be greater than 20, and usage quantity is the 0.5-2% of cement for quick reparing weight on the coagulation; Described fineness of pulverized-coal ash is 3000-6000m
2/ g Blain specific surface, carbon content must not surpass 8.0%, and consumption is the 1.5-5% of cement for quick reparing weight on the coagulation; The retardant consumption is the 0.2-2.0% of cement for quick reparing concrete weight.
3, the preparation method of cement for quick reparing concrete according to claim 1 is characterized in that may further comprise the steps:
(1), containing magnesium material grinding in ball mill is 4000-10000cm to Blain specific surface
2The fine powder of/g;
(2), phosphorated material in the disc type grinding machine grinding to the fine powder of particle diameter less than 0.6mm;
(3), packing material through fragmentation, classification, be dried into particle diameter less than 3.0mm, greater than 0.15mm, moisture content is lower than 0.2% granulated material;
(4), above material and flyash, filamentary material are mixed, be packaged into bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118951A CN1062531C (en) | 1996-12-29 | 1996-12-29 | Cement for quick reparing concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118951A CN1062531C (en) | 1996-12-29 | 1996-12-29 | Cement for quick reparing concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1154346A CN1154346A (en) | 1997-07-16 |
| CN1062531C true CN1062531C (en) | 2001-02-28 |
Family
ID=5125447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96118951A Expired - Fee Related CN1062531C (en) | 1996-12-29 | 1996-12-29 | Cement for quick reparing concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1062531C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323823C (en) * | 2004-05-10 | 2007-07-04 | 何其双 | Process and apparatus for producing dry mortar |
| CN103570265B (en) * | 2013-09-02 | 2016-01-20 | 盐城工学院 | A kind of potassium magnesium phosphate cement-base concrete tackiness agent and preparation method thereof |
| CN103992079B (en) * | 2014-05-30 | 2016-08-24 | 中铁十八局集团第四工程有限公司 | Repair materials, preparation method and the construction method thereof in a kind of concrete product crack |
| CN104594652B (en) * | 2014-12-07 | 2016-08-24 | 北京工业大学 | A kind of xoncrete structure basic unit recovery technique improves elastic modulus of concrete intensity method |
| CN105036695B (en) * | 2015-07-28 | 2017-08-01 | 盐城工学院 | The reparation overcoat and its construction method of reinforced concrete structure body |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3879209A (en) * | 1971-12-01 | 1975-04-22 | Republic Steel Corp | Process for preparing fast-setting aggregate compositions and products of low porosity produced therewith |
| US4059455A (en) * | 1976-06-17 | 1977-11-22 | Republic Steel Corporation | Production of fast-setting bonded aggregate structures |
| EP0133733A2 (en) * | 1983-08-11 | 1985-03-06 | Stauffer Chemical Company | Production of solid phosphorus pentoxide containing materials for fast-setting cements |
| CN1126183A (en) * | 1993-12-31 | 1996-07-10 | 罗纳·布朗克化学公司 | Preparation of a phosphomagnesia cement |
-
1996
- 1996-12-29 CN CN96118951A patent/CN1062531C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3879209A (en) * | 1971-12-01 | 1975-04-22 | Republic Steel Corp | Process for preparing fast-setting aggregate compositions and products of low porosity produced therewith |
| US4059455A (en) * | 1976-06-17 | 1977-11-22 | Republic Steel Corporation | Production of fast-setting bonded aggregate structures |
| EP0133733A2 (en) * | 1983-08-11 | 1985-03-06 | Stauffer Chemical Company | Production of solid phosphorus pentoxide containing materials for fast-setting cements |
| CN1126183A (en) * | 1993-12-31 | 1996-07-10 | 罗纳·布朗克化学公司 | Preparation of a phosphomagnesia cement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1154346A (en) | 1997-07-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |