CN106565119B - Ocean engineering corrosion resistance of chloride ion composite blending material for concrete - Google Patents

Ocean engineering corrosion resistance of chloride ion composite blending material for concrete Download PDF

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Publication number
CN106565119B
CN106565119B CN201610975880.3A CN201610975880A CN106565119B CN 106565119 B CN106565119 B CN 106565119B CN 201610975880 A CN201610975880 A CN 201610975880A CN 106565119 B CN106565119 B CN 106565119B
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China
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powder
concrete
composite
composite blend
chloride ion
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CN106565119A (en
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徐延国
来永刚
章雪涛
代娜
陈琳琳
宋靖
张伟
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SHANDONG HARBOUR ENGINEERING GROUP Co Ltd
Linyi University
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SHANDONG HARBOUR ENGINEERING GROUP Co Ltd
Linyi University
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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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • 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
    • 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
    • C04B2111/24—Sea water resistance
    • 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)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The present invention relates to a kind of ocean engineering corrosion resistance of chloride ion composite blending material for concrete, the raw material of the composite admixture is easily purchased, and production is easy, advantage of lower cost, when with Yu Haiyang high performance concrete, gained concrete has excellent resistant to sea water chloride permeability ability.The composite blend, mass percentage composition are miberal powder 15%-30%, steel-making slag powder 10%-20%, silicon ash 5%-10%, natural zeolite powder 5%-10%, and fly ash float 5%-10%, cement impervious powder 4%-6%, surplus is flyash.

Description

Ocean engineering corrosion resistance of chloride ion composite blending material for concrete
Technical field
The present invention relates to a kind of composite admixtures for ocean engineering high performance concrete, belong to the field of building materials, Specifically a kind of ocean engineering corrosion resistance of chloride ion composite blending material for concrete.
Background technique
Ocean is the main source of chloride ion, and 3% salt is usually contained in seawater, wherein mainly chloride ion.With Cl- It counts, the content in seawater is about 19000mg/L.Also contain chloride ion in sea wind, sea fog, in sea sand the more chlorine containing inequality from Son.The coastline in China is very long, and large-scale capital construction focuses mostly in coastal area.Ocean engineering such as islands and reefs harbour, slope protection It is very outstanding for destroying with steel bar corrosions due to caused by chloride ion such as embankments.Rust of Rebar in Concrete can by two kinds because Element induces, first is that Cl in seawater-It corrodes, second is that the CO in atmosphere2Make concrete neutralisation.A large amount of engineering sounding and section both at home and abroad Learning result of study to show to cause under marine environment the principal element of Steel Bars in Concrete Structure corrosion and destruction is Cl-Into coagulation In soil, and gather in rebar surface, reinforcing bar is promoted to generate electrochemical corrosion, so that Corrosion Reinforcement expansion makes concrete structure It destroys.Cl-Into usually there are two types of approach in concrete: one is " being mixed into ", such as mixes chloride ion-containing additive, using sea Sand, construction water chloride ion-containing, mixing casting concrete etc. in saline environment；Chloride ion the second is " infiltration ", in environment It is penetrated into concrete by the macroscopic view of concrete, microdefect, and reaches rebar surface." infiltration " phenomenon is polytechnic Problem, with concrete material porosity, density, construction quality, many factors such as rebar surface concrete layer thickness are related.For The speed that chloride ion penetrates into concrete is reduced, ocean engineering concrete service life of structure is extended, it is most important at present Method is to keep concrete finer and close using concrete mineral admixture.
High-quality mineral admixture has become the important raw material of high performance concrete indispensability.Used in ocean engineering concrete Mineral admixture mainly have flyash, miberal powder and a silicon ash, and admixture used in many emphasis ocean engineerings is all fine coal Ash or miberal powder is double-doped or flyash, miberal powder and silicon ash three are mixed.Composite is the inexorable trend of mineral admixture development, is to solve The resource provisions such as some areas flyash, miberal powder, silicon ash at present are difficult, while promoting mineral admixture and effectively being arranged using horizontal It applies.With the continuous development of marine engineering design, construction technology, ocean engineering concrete also faces new requirement, needs high-strength Degree, corrosion resistance of chloride ion, high compactness and high-durability, this also facilitates Development of Marine engineering concrete composite admixture technology Demand.Composite blend passes through composite cementitious material, induced activation effect, surface crystallites effect, interface coupling effect, micro- Effect of gathering materials etc. can not only improve the working performance of concrete but also all have to the durability for improving ocean engineering concrete Significance.The Composite of admixture can use industrial residue and part resource collocation, by reasonable formula composition, The combined grinding of science, not only realizes effective supply, but also improve technical economic benefit, rises and pushes away to the development of local circular economy Movement is used.
Summary of the invention
Goal of the invention
The object of the present invention is to provide a kind of ocean engineering corrosion resistance of chloride ion composite blending material for concrete, this is compound to mix It is easily purchased with material raw material, production is easy, advantage of lower cost, and when with Yu Haiyang high performance concrete, gained concrete has excellent The resistance of concrete to chloride ion penetration.
Summary of the invention
The present invention provides a kind of ocean engineering corrosion resistance of chloride ion composite blending material for concrete, mass percent groups Become, miberal powder 15%-30%, steel-making slag powder 10%-20%, silicon ash 5%-10%, natural zeolite powder 5%-10%, fly ash float 5%-10%, cement impervious powder 4%-6%, surplus is flyash.
Preferably, the mass percentage composition of the composite blend is miberal powder 20%-30%, steel-making slag powder 15%- 20%, silicon ash 8%-10%, natural zeolite powder 8%-10%, fly ash float 8%-10%, cement impervious powder 4%-6% are remaining Amount is flyash.
Preferably, the specific surface area of the composite blend is >=420m2/kg。
The miberal powder, steel-making slag powder, silicon ash, natural zeolite powder, fly ash float, cement impervious powder and flyash are known Common product, it is commercially available.Wherein, fly ash float is a kind of fly ash hollow ball that can be bubbled through the water column, and is in canescence, surface It closes and smooth, SiO in chemical analysis2About 50%-65%, Al2O3About 25%-35% has during particle is thin, wall is thin The multifrequency natures such as empty, light, high-intensitive, wear-resisting, high temperature resistant, heat preservation insulation, specific surface area 320-360m2/kg；It is cement impervious Powder is the nanoscale SiO handled by organosilyl surface2White powder, SiO2Content >=98%, particle surface are in elecrtonegativity, are changed It is high to learn activity, there is thickening flocculation water retention, the impermeability of cement-based material can be significantly improved.
Preferably, the miberal powder is the S95 grade miberal powder for complying with standard GB/T18046-2008.
Preferably, the steel-making slag powder is to comply with standard the S85 grade steel-making slag powder of GB/T 20491-2006.
Preferably, SiO in the silicon ash2Resultant is 92% (weight) or more.
Preferably, the natural zeolite powder is FS-II type natural zeolite powder.
Preferably, the cement impervious powder is produced by Hebei Hua Ting nanosecond science and technology Co., Ltd, model HT-101.
Preferably, the flyash is the level-one or second class powered coal ash for complying with standard GB/T1596-2005.
Produce the composite blend, it is only necessary to being mixed directly after various measuring raw materials, optionally, according to production Product fineness requirement is ground, and which is not described herein again.
This composite admixture is used for ocean engineering concrete, volume is the 20% of concrete gel material total weight ~50%, cement consumption save the cost can be not only reduced, hydration heat of concrete is reduced and reduces structure crack, and can play Complementary filling effect and chloride ion absorption solidification effect, gained ocean engineering concrete between mineral admixture have excellent The resistance of concrete to chloride ion penetration, so that it is guaranteed that ocean engineering concrete structure is on active service safely, is long-term durable.
Specific embodiment
In order to further appreciate that the present invention, the preferred embodiments of the invention are described below with reference to embodiment, but It is it should be appreciated that these descriptions are only to further illustrate the features and advantages of the invention rather than limiting the invention.
Following all examples be related to substance producer and model it is as follows:
Miberal powder: S95 grades, specific surface area 420-450m2/ kg, the production of sunshine capital building material Co., Ltd.
Steel-making slag powder, S85 grades, specific surface area 400-430m2/ kg, the production of sunshine capital building material Co., Ltd.
Silicon ash, SiO292% or more resultant, than table 15000-20000m2/ Kg, Beijing CABR Kunlun Technology Co., Ltd. are raw It produces.
Natural zeolite powder, FS-II type, the production of Xinyang center mining industry Co., Ltd.
Fly ash float, specific surface area 320-360m2/ kg, the production of Xingtai Gan Jia floating bead Manufacturing Co., Ltd.
Cement impervious powder, model HT-101, main component are organic-silicon-modified Nano-meter SiO_22, Hebei China endures nanosecond science and technology Co., Ltd's production.
Flyash, second-level ash, the production of sunshine De Sheng building material Co., Ltd.
Cement is 42.5 grades of ordinary portland cements, middle sunshine cement company production.
River sand is middle sand, and fineness modulus 2.6, is produced from Linyi Yihe.
Rubble is 5-25mm continuous grading rubble, sunshine bay concrete Co., Ltd.
PC polycarboxylic acid retarding high efficiency water reducing agent, concentration 20%, Shandong Hongyi Technology Co., Ltd.'s production.
Water: tap water or clean river water.
The weight percent composition of embodiment is specifically such as table 1.
Table 1
Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Embodiment 6 Embodiment 7
Miberal powder 25% 30% 25% 20% 15% 30% 15%
Steel-making slag powder 18% 15% 20% 18% 20% 20% 10%
Silicon ash 9% 8% 10% 8% 5% 5% 10%
Natural zeolite powder 9% 8% 5% 8% 10% 5% 10%
Fly ash float 9% 5% 8% 8% 10% 5% 10%
Cement impervious powder 5% 6% 4% 5% 5% 6% 4%
Flyash Surplus Surplus Surplus Surplus Surplus Surplus Surplus
It is formed according to weight percent described in table 1, enters batch mixer after accurate metering or ball mill combined grinding is uniform After discharge, obtain composite blend described in embodiment 1-7.Referring to building industry professional standard JG/T486-2015, " concrete is used Composite blend " it is detected, specific data target such as table 2.
Application Example
Agent on crack resistance of concrete chloride permeability test, according to GB/T 50082-2009 " normal concrete long-term behaviour and durability Can test method standard " in quickly chloride ion transport Y-factor method Y (RCM method) to the chloride diffusion coefficient of cement for construction in sea concrete It is tested, the results are shown in Table 3.The electric flux of concrete according to GB/T 50082-2009 " normal concrete long-term behaviour and Endurance quality test method standard " as defined in method carry out, the results are shown in Table 4.Wherein:
Comparative sample is the C50 grade ocean engineering high performance concrete of normality, and match ratio is as follows:
Tap water 165, cement 250, flyash 100, miberal powder 125, silicon ash 25, river sand 720, rubble 1070, PC polycarboxylic acids Additive (20% concentration) 6.0, unit K g/m3；
Application Example concrete mix is as follows:
Tap water 165, cement 250, embodiment gained composite admixture 250, river sand 720, rubble 1070, PC polycarboxylic acids Additive (20% concentration) 6.0, unit K g/m3。
It, can be in ocean from 3 table 4 of table as can be seen that marine worker composite admixture has preferable corrosion resistance of chloride ion effect It is promoted and applied in engineering high performance concrete.
2 embodiment 1-6 performance indicator of table
3 ocean engineering concrete chloride diffusion coefficient of table
The electric flux of 4 ocean engineering concrete of table
。

Claims (8)

1. a kind of ocean engineering corrosion resistance of chloride ion composite blending material for concrete, which is characterized in that its mass percentage composition For, miberal powder 15%-30%, steel-making slag powder 10%-20%, silicon ash 5%-10%, natural zeolite powder 5%-10%, fly ash float 5%-10%, cement impervious powder 4%-6%, surplus is flyash.
2. composite blend as described in claim 1, which is characterized in that the mass percentage composition of the composite blend For, miberal powder 20%-30%, steel-making slag powder 15%-20%, silicon ash 8%-10%, natural zeolite powder 8%-10%, fly ash float 8%-10%, cement impervious powder 4%-6%, surplus is flyash.
3. composite blend as claimed in claim 1 or 2, which is characterized in that the specific surface area of the composite blend be >= 420m2/kg。
4. composite blend as claimed in claim 1 or 2, which is characterized in that the miberal powder is to comply with standard GB/T18046- 2008 S95 grade miberal powder.
5. composite blend as claimed in claim 1 or 2, which is characterized in that the steel-making slag powder is to comply with standard GB/T The S85 grade steel-making slag powder of 20491-2006.
6. composite blend as claimed in claim 1 or 2, which is characterized in that SiO in the silicon ash2Content is 92% (weight) More than.
7. composite blend as claimed in claim 1 or 2, which is characterized in that the natural zeolite powder is that II type of FS- naturally boils Mountain flour.
8. composite blend as claimed in claim 1 or 2, which is characterized in that the flyash is to comply with standard GB/T1596- 2005 level-one or second class powered coal ash.
CN201610975880.3A 2016-11-07 2016-11-07 Ocean engineering corrosion resistance of chloride ion composite blending material for concrete Active CN106565119B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108455961B (en) * 2018-02-09 2021-03-30 济南大学 Phosphoaluminate cement-based chloride ion curing agent
CN109250944B (en) * 2018-11-12 2021-04-27 武汉理工大学 Zeolite supported chloride ion curing agent and preparation method and application thereof
CN111072325B (en) * 2019-12-19 2022-05-27 江苏盐砼新材料科技有限公司 Easy-flowing type composite mineral admixture, preparation method thereof and mortar prepared by adopting admixture

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1712383A (en) * 2005-05-09 2005-12-28 上海建工材料工程有限公司 Corrosion proof high performance marine concrete and its production
CN101168480A (en) * 2006-10-23 2008-04-30 浙江合力新型建材有限公司 High-performance concrete corrosion-resistant anti-cracking agent and producing method thereof
CN103979807A (en) * 2014-05-05 2014-08-13 武汉海剑环保材料有限公司 Construction waste regenerated high-activity mineral admixture and preparation thereof
CN104496245A (en) * 2014-12-30 2015-04-08 上海申御特种建材有限公司 Anti-erosion and anti-corrosion agent and preparation method thereof
CN105084837A (en) * 2015-08-14 2015-11-25 黄贺明 Sea sand powder concrete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1712383A (en) * 2005-05-09 2005-12-28 上海建工材料工程有限公司 Corrosion proof high performance marine concrete and its production
CN101168480A (en) * 2006-10-23 2008-04-30 浙江合力新型建材有限公司 High-performance concrete corrosion-resistant anti-cracking agent and producing method thereof
CN103979807A (en) * 2014-05-05 2014-08-13 武汉海剑环保材料有限公司 Construction waste regenerated high-activity mineral admixture and preparation thereof
CN104496245A (en) * 2014-12-30 2015-04-08 上海申御特种建材有限公司 Anti-erosion and anti-corrosion agent and preparation method thereof
CN105084837A (en) * 2015-08-14 2015-11-25 黄贺明 Sea sand powder concrete

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