JP4791231B2 - 耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体およびその製造方法 - Google Patents
耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体およびその製造方法 Download PDFInfo
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- JP4791231B2 JP4791231B2 JP2006097650A JP2006097650A JP4791231B2 JP 4791231 B2 JP4791231 B2 JP 4791231B2 JP 2006097650 A JP2006097650 A JP 2006097650A JP 2006097650 A JP2006097650 A JP 2006097650A JP 4791231 B2 JP4791231 B2 JP 4791231B2
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- 238000006386 neutralization reaction Methods 0.000 title claims description 42
- 230000003014 reinforcing effect Effects 0.000 title claims description 32
- 150000003839 salts Chemical class 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000002893 slag Substances 0.000 claims description 68
- 239000010881 fly ash Substances 0.000 claims description 53
- 238000011282 treatment Methods 0.000 claims description 34
- 239000004568 cement Substances 0.000 claims description 33
- 238000009628 steelmaking Methods 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 30
- 239000011400 blast furnace cement Substances 0.000 claims description 24
- 239000011398 Portland cement Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 15
- 239000000920 calcium hydroxide Substances 0.000 claims description 15
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 15
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000004381 surface treatment Methods 0.000 claims description 10
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 10
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 9
- 229910000398 iron phosphate Inorganic materials 0.000 claims description 9
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 9
- IQBJFLXHQFMQRP-UHFFFAOYSA-K calcium;zinc;phosphate Chemical compound [Ca+2].[Zn+2].[O-]P([O-])([O-])=O IQBJFLXHQFMQRP-UHFFFAOYSA-K 0.000 claims description 8
- 230000036571 hydration Effects 0.000 claims description 7
- 238000006703 hydration reaction Methods 0.000 claims description 7
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 claims description 6
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 6
- 239000001506 calcium phosphate Substances 0.000 claims description 5
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 5
- 235000011010 calcium phosphates Nutrition 0.000 claims description 5
- 239000004137 magnesium phosphate Substances 0.000 claims description 5
- 229910000157 magnesium phosphate Inorganic materials 0.000 claims description 5
- 229960002261 magnesium phosphate Drugs 0.000 claims description 5
- 235000010994 magnesium phosphates Nutrition 0.000 claims description 5
- 239000004567 concrete Substances 0.000 description 31
- 238000012360 testing method Methods 0.000 description 25
- 239000000463 material Substances 0.000 description 16
- 238000001723 curing Methods 0.000 description 14
- 239000002245 particle Substances 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 229910052827 phosphophyllite Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 101000658298 Plectreurys tristis U3-plectoxin-Pt1a Proteins 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- YXVFQADLFFNVDS-UHFFFAOYSA-N diammonium citrate Chemical compound [NH4+].[NH4+].[O-]C(=O)CC(O)(C(=O)O)CC([O-])=O YXVFQADLFFNVDS-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000002335 surface treatment layer Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
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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
- C04B28/10—Lime cements or magnesium oxide 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1062—Metals
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/107—Acids or salts thereof
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
Description
(1)鉄筋を内部に有する水和硬化体が、少なくともCaO/SiO 2 が質量比で1.5未満、且つ、CaO濃度が25質量%未満の製鋼スラグと高炉スラグ微粉末とフライアッシュとを含有し、前記フライアッシュの含有量が100kg/m3以上であり、水和硬化体が、さらにポルトランドセメント、JIS R 5211「高炉セメント」に適合するB種の高炉セメント、JIS R 5213「フライアッシュセメント」に適合するB種のフライアッシュセメント、消石灰から選ばれる1種または2種以上を含有し、その含有率が[ポルトランドセメント(kg/m 3 )+高炉セメント(kg/m 3 )×0.6+フライアッシュセメント(kg/m 3 )×0.85+消石灰(kg/m 3 )]/[フライアッシュ(kg/m 3 )+フライアッシュセメント×0.15(kg/m 3 )]で0.45以下であり、且つ、前記製鋼スラグの含有量が1975kg/m 3 以上であり、且つ、前記混合物中における高炉セメントに由来する高炉スラグ微粉末以外の高炉スラグ微粉末の含有量が100kg/m 3 以上であり、さらに前記鉄筋の表面に表面処理を施したことを特徴とする耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体。
(2)鉄筋の表面処理が、燐酸鉄処理、燐酸亜鉛処理、燐酸亜鉛カルシウム処理、燐酸マグネシウム処理、燐酸カルシウム処理および亜鉛めっきのいずれかであることを特徴とする(1)に記載の耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体。
(3)耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体の製造方法であって、[ポルトランドセメント(kg/m 3 )+高炉セメント(kg/m 3 )×0.6+フライアッシュセメント(kg/m 3 )×0.85+消石灰(kg/m 3 )]/[フライアッシュ(kg/m 3 )+フライアッシュセメント×0.15(kg/m 3 )]で0.45以下になるように、少なくとも、ポルトランドセメント、JIS R 5211「高炉セメント」に適合するB種の高炉セメント、JIS R 5213「フライアッシュセメント」に適合するB種のフライアッシュセメント、消石灰から選ばれる1種または2種以上と、CaO/SiO 2 が質量比で1.5未満、且つ、CaO濃度が25質量%未満の製鋼スラグと、高炉スラグ微粉末と、フライアッシュとを水と混合し、得られた混合物を硬化するステップを含み、前記フライアッシュの含有量が100kg/m 3 以上であり、且つ、前記製鋼スラグの含有量が1975kg/m 3 以上であり、且つ、前記混合物中における高炉セメントに由来する高炉スラグ微粉末以外の高炉スラグ微粉末の含有量が100kg/m 3 以上であり、前記鉄筋の表面に表面処理を施すことを特徴とする耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体の製造方法。
Claims (3)
- 鉄筋を内部に有する水和硬化体が、少なくともCaO/SiO 2 が質量比で1.5未満、且つ、CaO濃度が25質量%未満の製鋼スラグと高炉スラグ微粉末とフライアッシュとを含有し、前記フライアッシュの含有量が100kg/m3以上であり、水和硬化体が、さらにポルトランドセメント、JIS R 5211「高炉セメント」に適合するB種の高炉セメント、JIS R 5213「フライアッシュセメント」に適合するB種のフライアッシュセメント、消石灰から選ばれる1種または2種以上を含有し、その含有率が[ポルトランドセメント(kg/m 3 )+高炉セメント(kg/m 3 )×0.6+フライアッシュセメント(kg/m 3 )×0.85+消石灰(kg/m 3 )]/[フライアッシュ(kg/m 3 )+フライアッシュセメント×0.15(kg/m 3 )]で0.45以下であり、且つ、前記製鋼スラグの含有量が1975kg/m 3 以上であり、且つ、前記混合物中における高炉セメントに由来する高炉スラグ微粉末以外の高炉スラグ微粉末の含有量が100kg/m 3 以上であり、さらに前記鉄筋の表面に表面処理を施したことを特徴とする耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体。
- 鉄筋の表面処理が、燐酸鉄処理、燐酸亜鉛処理、燐酸亜鉛カルシウム処理、燐酸マグネシウム処理、燐酸カルシウム処理および亜鉛めっきのいずれかであることを特徴とする請求項1に記載の耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体。
- 耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体の製造方法であって、[ポルトランドセメント(kg/m 3 )+高炉セメント(kg/m 3 )×0.6+フライアッシュセメント(kg/m 3 )×0.85+消石灰(kg/m 3 )]/[フライアッシュ(kg/m 3 )+フライアッシュセメント×0.15(kg/m 3 )]で0.45以下になるように、少なくとも、ポルトランドセメント、JIS R 5211「高炉セメント」に適合するB種の高炉セメント、JIS R 5213「フライアッシュセメント」に適合するB種のフライアッシュセメント、消石灰から選ばれる1種または2種以上と、CaO/SiO 2 が質量比で1.5未満、且つ、CaO濃度が25質量%未満の製鋼スラグと、高炉スラグ微粉末と、フライアッシュとを水と混合し、得られた混合物を硬化するステップを含み、前記フライアッシュの含有量が100kg/m 3 以上であり、且つ、前記製鋼スラグの含有量が1975kg/m 3 以上であり、且つ、前記混合物中における高炉セメントに由来する高炉スラグ微粉末以外の高炉スラグ微粉末の含有量が100kg/m 3 以上であり、前記鉄筋の表面に表面処理を施すことを特徴とする耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体の製造方法。
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JP2006097650A JP4791231B2 (ja) | 2006-03-31 | 2006-03-31 | 耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体およびその製造方法 |
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JPH09125259A (ja) * | 1995-11-07 | 1997-05-13 | Kawasaki Steel Corp | 溶接缶用表面処理鋼板 |
JP3433077B2 (ja) * | 1997-11-26 | 2003-08-04 | 新日本製鐵株式会社 | コンクリート構造用鋼材 |
JP2001163656A (ja) * | 1999-12-03 | 2001-06-19 | Tajima Roofing Co Ltd | 水硬性組成物とこれによる建材。 |
JP4003387B2 (ja) * | 2000-06-09 | 2007-11-07 | 住友金属工業株式会社 | 防食表面処理法と防食表面処理鋼材およびその使用方法 |
JP2002068804A (ja) * | 2000-08-22 | 2002-03-08 | Taiheiyo Cement Corp | コンクリート組成物 |
JP3958090B2 (ja) * | 2001-06-08 | 2007-08-15 | Jfeスチール株式会社 | 水和硬化体 |
JP2003165751A (ja) * | 2001-11-28 | 2003-06-10 | Nkk Corp | 水硬性組成物及び水和硬化体 |
JP2003306359A (ja) * | 2002-04-17 | 2003-10-28 | Jfe Steel Kk | セメント組成物及び水和硬化体 |
JP3816036B2 (ja) * | 2002-07-19 | 2006-08-30 | 電気化学工業株式会社 | セメント混和材、セメント組成物及びそれを用いてなるモルタルまたはコンクリート |
JP3844457B2 (ja) * | 2002-07-19 | 2006-11-15 | 電気化学工業株式会社 | セメント混和材及びセメント組成物 |
JP2004124204A (ja) * | 2002-10-04 | 2004-04-22 | Haruken Sangyo Kk | 防錆・防食方法および防錆・防食塗料 |
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