CN105060784A - High-ductility cement-based material for repairing hydraulic outlet works, and preparation method thereof - Google Patents

High-ductility cement-based material for repairing hydraulic outlet works, and preparation method thereof Download PDF

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Publication number
CN105060784A
CN105060784A CN201510468837.3A CN201510468837A CN105060784A CN 105060784 A CN105060784 A CN 105060784A CN 201510468837 A CN201510468837 A CN 201510468837A CN 105060784 A CN105060784 A CN 105060784A
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China
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cement
hydraulic outlet
parts
outlet works
repaired
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CN201510468837.3A
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CN105060784B (en
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郭丽萍
陈波
谌正凯
张文潇
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Southeast University
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Southeast University
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Abstract

The invention discloses a high-ductility cement-based material for repairing hydraulic outlet works, and a preparation method thereof. The material comprises, by weight, 100 parts of cement, 25-150 parts of water, 50-250 parts of brown fused alumina, 20-450 parts of microspheres, 0.5-20 parts of nano-CaCO3, 0.1-5 parts of a water reducer, 0.95-15 parts of PVA fibers and 2-20 parts of ultrafine steel fibers. The high-ductility cement-based material for repairing hydraulic outlet works has the advantages of high impact and wear strength, high bonding strength with a matrix, high ductility, similar thermal expansion coefficient with concrete, consistence with deformation of the matrix concrete, simple and convenient construction process, and wide sources of raw materials.

Description

A kind of high ductility cement-based material for hydraulic outlet works repairing and preparation method
Technical field
The invention belongs to field of material technology, particularly high ductility cement-based material of repairing of a kind of hydraulic outlet works and preparation method thereof.
Background technology
High velocity flow containing traction load and suspended load causes the ablation destruction of sluice structure concrete surface to be Hydraulic and Hydro-Power Engineering construction and the Common Diseases in runing.The hydraulic outlet works such as the base plate of diversion tunnel, overfall dike, spillway, flood discharging tunnel, sluice gate base plate, protection-apron, baffle block, cushion pool, Er Daoba, draining bottom outlet and abutment wall gall bad containing producing punching under sand current scour wearing and tearing and traction load shock action at a high speed through being everlasting.The diversion tunnel base plate of reservoir Zhipingpu and abutment wall, since water conservancy diversion in 2002 runs, have rushed mill due to traction load, and surface abrasion is commonplace, and erosion dell appears in local, and the total area reaches 25000m 2 [1].Power station, Li Jia gorge diversion tunnel water conservancy diversion cross water more than 5 years after, check and find that base plate steel lining and concrete seam are washed the dell forming dark 1.7 ~ 2m, average wide 10m, long 8m after gate, backplate bottom, end concrete is by the naughty sky of current; From the concave surface that diversion tunnel is turned, apart from abutment wall 1m place, base plate is washed and forms dark 0.7 ~ 1.2m, wide 1 ~ 1.5m, the axial deep trouth being about 600m along hole [2].The a collection of large-scale high-head power station of China, as the pinecone, silk screen, white crane beach, Xi Luodu, Burner zone, black East Germany etc., the flow rate of water flow of its sluice structure can, up to 40 ~ 50m/s, make the worn-off bad problem of rushing of hydraulic outlet works more outstanding.
Sluice structure are galled badly by punching must take repairing measures in time.More commonly adopt silica flour high-strength concrete or epoxy mortar or spray polyurea [3-7].High-strength concrete abrasion resistance is comparatively strong, but high-strength concrete is easy to crack, and crack, under hydraulic pressure and traction load shock action, is expanded gradually, and repair layer is often destroyed from crack.When adopting the high strength organic material such as epoxy mortar or spray polyurea to repair, cementability and the resistant abrasion performance of material itself are all very excellent, but, thermal expansivity due to epoxy and polyureas is the thermal expansivity 2 ~ 3 times of base concrete, cause the temperature deformation of repair layer and substrate inharmonious, after the several winter alternates with summer of experience, repair layer starts local and plays drum, unsticking, finally causes repair layer entirety to be lost efficacy by raising; Meanwhile, in the organism such as epoxy and polyureas, volatile matter also can have a negative impact to the health of construction worker.
Therefore, need the cement based patching material developing a kind of high-impact mill performance, high adhesion and high ductility, improve resistance to impact and abrasion and the cycle of military service of repair layer, reduce and repair frequency, improve the security of engineering operation.
Reference
[1] Zhang Tao, Guo Shuan, Huang Junwei. repair [J] after the anti-high velocity flow punching abrasion repairing of Zi Ping-pu engineering flood and sand discharging hole and shake. water economic system and economy, 2011, (10): 85-88.
[2] paddy is founded the state. and diversion tunnel base plate washes away simple analysis [J]. northwest water power, 1999, (3): 13-14.
[3] Ma Yu, Sun Zhiheng, Zhang Xin. the experimental study [J] of snappiness mending mortar. dam and safety, 2013, (2): 44-47.
[4] Liu Shuanhong, Wang Yafei. power station, plain boiled water valley energy dissipation tank wearing and tearing repairing technique [J]. water power and new forms of energy, 2015, (5): 63-64,70.
[5] He Chengli, Cui Yinglin. from selection and the construction [J] of the repairing water tender buildings resistant abrasion layer material of Sanmenxia Gorge bottom outlet. concrete, 2004, (6): 74-75.
[7] Wang Ya flies the application [J] of .NE type epoxy resistant abrasion mortar in power station, plain boiled water valley stilling basin wearing and tearing repairing work. Chinese Water Transportation (the second half of the month), 2015, (2): 171-172.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of this invention is to provide a kind of high ductility cement-based material repaired for hydraulic outlet works, to improve the resistance to impact and abrasion of hydraulic outlet works repair layer, interfacial adhesion and ductility.
For achieving the above object, the present invention is by the following technical solutions:
For the high ductility cement-based material that hydraulic outlet works is repaired, according to mass fraction, composed of the following components: cement 100 parts, 25 ~ 150 parts, water, Brown Alundum 50 ~ 250 parts, microballon 20 ~ 450 parts, Nano-meter CaCO3 30.5 ~ 20 part, water reducer 0.1 ~ 5 part, PVA fiber 0.95 ~ 15 part, Extra Fine Steel fiber 2 ~ 20 parts.
Preferably, described cement is PO42.5 cement.
Preferably, strength grade >=42.5 of described cement.
Preferably, the maximum particle diameter of described Brown Alundum is 1.5mm; Volume mean diameter D (4, the 3)≤100nm of described microballon; Described Nano-meter CaCO3 3volume mean diameter D (4,3)≤25nm.
Preferably, water-reducing rate >=25% of described water reducer.
Preferably, described PVA fiber is equivalent diameter is 40 μm, tensile strength is greater than 1500MPa, Young's modulus is greater than 35GPa shortly cuts PVA fiber.
Preferably, the equivalent diameter of described Extra Fine Steel fiber is 0.10mm ~ 0.20mm, length-to-diameter ratio 50 ~ 65.
This is used for high ductility cement-based material 28d anti-abrasion strength>=30h/ (kg/m that hydraulic outlet works is repaired 2), draw cohesive strength>=5.0MPa with splitting of original concrete, limit stretch value 1% ~ 3%.
Another object of the present invention is to provide a kind of preparation method of the above-mentioned high ductility cement-based material for hydraulic outlet works repairing, and its technical scheme is:
For a preparation method for the high ductility cement-based material that hydraulic outlet works is repaired, comprise the following steps:
(1) first by cement, microballon, Nano-meter CaCO3 3, Brown Alundum pours in stirrer, stirs 3min;
(2) water reducer and water are added said mixture, stir 3min, obtain the slurry of Uniform Flow, the viscosity of test slurry;
(3) after obtaining the slurry of Uniform Flow, add PVA fiber, stir 3min;
(4) add Extra Fine Steel fiber, stir 3min;
(5) mending mortar goes out machine, enters mould and builds shaping.
In step (2), require that the viscosity of slurry meets 1Pas ~ 30Pas, step (3) can be carried out.
The invention has the beneficial effects as follows:
Provided by the invention for hydraulic outlet works repair high ductility cement-based material scouring & wearing strength high, with bond matrix intensity high, ductility is high, the thermal expansivity of patching material and concrete close, consistent with the compatibility of deformation of original concrete, its construction technology is simple, convenient, and starting material material source is extensive.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
Embodiment 1
The proportion of composing of material is as shown in table 1:
Table 1 hydraulic outlet works patching material mixing ratio (mass fraction)
Raw materials is:
Cement is PO42.5 cement, and Brown Alundum maximum particle diameter is 0.5mm, and microballon volume mean diameter D (4,3) is 95nm; Nano-meter CaCO3 3volume mean diameter D (4,3) be 24.5nm, high performance water reducing agent of polyocarboxy acid, water-reducing rate 30%, the short PVA of cutting fiber equivalent diameter is 40 μm, tensile strength 1550MPa,
Young's modulus 39GPa; Extra Fine Steel fiber equivalent diameter is 0.16mm, length-to-diameter ratio 50.
Hydraulic outlet works patching material stirring technique is as follows:
(1) first by cement, microballon, Nano-meter CaCO3 3, Brown Alundum pours in stirrer, stirs 3min.
(2) water reducer and water are added, stir 3min, obtain the slurry of Uniform Flow, the viscosity of test slurry.
(3) after obtaining the slurry of Uniform Flow, slowly add PVA fiber, stir 3min.
(4) add steel fiber, stir 3min.
(5) mending mortar goes out machine, enters mould and builds shaping.
The performance of hydraulic outlet works patching material:
In step (2), slurry viscosity: 15Pas.
During 28d, the anti-abrasion strength of steel ball method test under water: 31.5h/ (kg/m 2), draw cohesive strength with splitting of original concrete: 5.5MPa, limit stretch value: 2.8%.
Embodiment 2
The proportion of composing of material is as shown in table 2:
Table 2 hydraulic outlet works patching material mixing ratio (mass fraction)
Raw materials is:
Cement is PO52.5 cement, and Brown Alundum maximum particle diameter is 1.25mm, and microballon volume mean diameter D (4,3) is 100nm; Nano-meter CaCO3 3volume mean diameter D (4,3) be 24.5nm, high performance water reducing agent of polyocarboxy acid, water-reducing rate 25%, the short PVA of cutting fiber equivalent diameter is 40 μm, tensile strength 1550MPa, Young's modulus 39GPa; Extra Fine Steel fiber equivalent diameter is 0.10mm, length-to-diameter ratio 60.
Hydraulic outlet works patching material stirring technique is as follows:
(1) first by cement, microballon, Nano-meter CaCO3 3, Brown Alundum pours in stirrer, stirs 3min.
(2) water reducer and water are added, stir 3min, obtain the slurry of Uniform Flow, the viscosity of test slurry.
(3) after obtaining the slurry of Uniform Flow, slowly add PVA fiber, stir 3min.
(4) add steel fiber, stir 3min.
(5) mending mortar goes out machine, enters mould and builds shaping.
The performance of hydraulic outlet works patching material:
In step (2), slurry viscosity: 1Pas.
During 28d, the anti-abrasion strength of steel ball method test under water: 30h/ (kg/m 2), draw cohesive strength with splitting of original concrete: 5.5MPa, limit stretch value: 3%.
Embodiment 3
The proportion of composing of material is as shown in table 3:
Table 3 hydraulic outlet works patching material mixing ratio (mass fraction)
Raw materials is:
Cement is PO42.5 cement, and Brown Alundum maximum particle diameter is 1.5mm, and microballon volume mean diameter D (4,3) is 90nm; Nano-meter CaCO3 3volume mean diameter D (4,3) be 25nm, high performance water reducing agent of polyocarboxy acid, water-reducing rate 40%, the short PVA of cutting fiber equivalent diameter is 40 μm, tensile strength 1550MPa, Young's modulus 39GPa; Extra Fine Steel fiber equivalent diameter is 0.20mm, length-to-diameter ratio 65.
Hydraulic outlet works patching material stirring technique is as follows:
(1) first by cement, microballon, Nano-meter CaCO3 3, Brown Alundum pours in stirrer, stirs 3min.
(2) water reducer and water are added, stir 3min, obtain the slurry of Uniform Flow, the viscosity of test slurry.
(3) after obtaining the slurry of Uniform Flow, slowly add PVA fiber, stir 3min.
(4) add steel fiber, stir 3min.
(5) mending mortar goes out machine, enters mould and builds shaping.
The performance of hydraulic outlet works patching material:
In step (2), slurry viscosity: 30Pas.
During 28d, the anti-abrasion strength of steel ball method test under water: 32h/ (kg/m 2), draw cohesive strength with splitting of original concrete: 5MPa, limit stretch value: 1%.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (9)

1., for the high ductility cement-based material that hydraulic outlet works is repaired, it is characterized in that: according to mass fraction, composed of the following components: cement 100 parts, 25 ~ 150 parts, water, Brown Alundum 50 ~ 250 parts, microballon 20 ~ 450 parts, Nano-meter CaCO3 30.5 ~ 20 part, water reducer 0.1 ~ 5 part, PVA fiber 0.95 ~ 15 part, Extra Fine Steel fiber 2 ~ 20 parts.
2. the high ductility cement-based material repaired for hydraulic outlet works according to claim 1, is characterized in that: strength grade >=42.5 of described cement.
3. the high ductility cement-based material repaired for hydraulic outlet works according to claim 1, is characterized in that: the maximum particle diameter of described Brown Alundum is 1.5mm; Volume mean diameter D (4, the 3)≤100nm of described microballon; Described Nano-meter CaCO3 3volume mean diameter D (4,3)≤25nm.
4. the high ductility cement-based material repaired for hydraulic outlet works according to claim 1, is characterized in that: water-reducing rate >=25% of described water reducer.
5. the high ductility cement-based material repaired for hydraulic outlet works according to claim 1, is characterized in that: described PVA fiber is equivalent diameter is 40 μm, tensile strength is greater than 1500MPa, Young's modulus is greater than 35GPa shortly cuts PVA fiber.
6. the high ductility cement-based material repaired for hydraulic outlet works according to claim 1, is characterized in that: the equivalent diameter of described Extra Fine Steel fiber is 0.10mm ~ 0.20mm, length-to-diameter ratio 50 ~ 65.
7. the high ductility cement-based material repaired for hydraulic outlet works according to claim 1, is characterized in that: this is used for high ductility cement-based material 28d anti-abrasion strength>=30h/ (kg/m that hydraulic outlet works is repaired 2), draw cohesive strength>=5.0MPa with splitting of original concrete, limit stretch value 1% ~ 3%.
8., for a preparation method for the high ductility cement-based material of hydraulic outlet works repairing, it is characterized in that: comprise the following steps:
(1) first by cement, microballon, Nano-meter CaCO3 3, Brown Alundum pours in stirrer, stirs 3min;
(2) water reducer and water are added said mixture, stir 3min, obtain the slurry of Uniform Flow, the viscosity of test slurry;
(3) after obtaining the slurry of Uniform Flow, add PVA fiber, stir 3min;
(4) add Extra Fine Steel fiber, stir 3min;
(5) mending mortar goes out machine, enters mould and builds shaping.
9. the preparation method of the high ductility cement-based material for hydraulic outlet works repairing according to claim 8, is characterized in that: in step (2), the viscosity 1Pas ~ 30Pas of slurry.
CN201510468837.3A 2015-08-03 2015-08-03 High-ductility cement-based material for repairing hydraulic outlet works, and preparation method thereof Active CN105060784B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105781017A (en) * 2016-05-06 2016-07-20 温州大学 Ultrahigh-performance assembly column and manufacturing method thereof
CN107382212A (en) * 2017-08-25 2017-11-24 北京煜煌科技有限公司 A kind of hydraulic engineering concrete
CN107445545A (en) * 2017-08-04 2017-12-08 水利部交通运输部国家能源局南京水利科学研究院 A kind of high ductility cement-base composite material of Hydro-concrete Structures repairing
CN111018463A (en) * 2018-10-09 2020-04-17 俊和建筑工程有限公司 Mortar reinforced concrete structure
CN111925177A (en) * 2020-08-15 2020-11-13 山东道优地坪工程有限公司 Concrete aging layer minimally invasive repairing surface layer material and preparation method thereof
CN112442987A (en) * 2020-11-10 2021-03-05 广东水电二局股份有限公司 Method for repairing large-area steep slope water outlet building overflow surface by using ultrahigh-performance concrete
CN112479661A (en) * 2020-12-30 2021-03-12 南京高延科技新材料有限公司 High-toughness concrete material for rapid repairing of sewage pool building and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101880138A (en) * 2009-05-04 2010-11-10 周健民 High performance steel-polypropylene hybrid fiber concrete
CN103387356A (en) * 2013-07-25 2013-11-13 东南大学 Engineered cementitious composite (ECC) repairing material and preparation method thereof
CN104150834A (en) * 2014-08-21 2014-11-19 东南大学 Medium-coarse aggregate high-toughness polyvinyl alcohol fiber-reinforced cement-based composite material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101880138A (en) * 2009-05-04 2010-11-10 周健民 High performance steel-polypropylene hybrid fiber concrete
CN103387356A (en) * 2013-07-25 2013-11-13 东南大学 Engineered cementitious composite (ECC) repairing material and preparation method thereof
CN104150834A (en) * 2014-08-21 2014-11-19 东南大学 Medium-coarse aggregate high-toughness polyvinyl alcohol fiber-reinforced cement-based composite material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105781017A (en) * 2016-05-06 2016-07-20 温州大学 Ultrahigh-performance assembly column and manufacturing method thereof
CN107445545A (en) * 2017-08-04 2017-12-08 水利部交通运输部国家能源局南京水利科学研究院 A kind of high ductility cement-base composite material of Hydro-concrete Structures repairing
CN107445545B (en) * 2017-08-04 2020-03-17 水利部交通运输部国家能源局南京水利科学研究院 High-ductility cement-based composite material for repairing hydraulic concrete structure
CN107382212A (en) * 2017-08-25 2017-11-24 北京煜煌科技有限公司 A kind of hydraulic engineering concrete
CN111018463A (en) * 2018-10-09 2020-04-17 俊和建筑工程有限公司 Mortar reinforced concrete structure
CN111925177A (en) * 2020-08-15 2020-11-13 山东道优地坪工程有限公司 Concrete aging layer minimally invasive repairing surface layer material and preparation method thereof
CN112442987A (en) * 2020-11-10 2021-03-05 广东水电二局股份有限公司 Method for repairing large-area steep slope water outlet building overflow surface by using ultrahigh-performance concrete
CN112479661A (en) * 2020-12-30 2021-03-12 南京高延科技新材料有限公司 High-toughness concrete material for rapid repairing of sewage pool building and preparation method thereof

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