JP2014129213A - Fast-curing grout composition and fast-curing grout material - Google Patents
Fast-curing grout composition and fast-curing grout material Download PDFInfo
- Publication number
- JP2014129213A JP2014129213A JP2012289187A JP2012289187A JP2014129213A JP 2014129213 A JP2014129213 A JP 2014129213A JP 2012289187 A JP2012289187 A JP 2012289187A JP 2012289187 A JP2012289187 A JP 2012289187A JP 2014129213 A JP2014129213 A JP 2014129213A
- Authority
- JP
- Japan
- Prior art keywords
- fast
- mass
- hardening
- parts
- quick
- 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.)
- Granted
Links
- 239000011440 grout Substances 0.000 title claims abstract description 71
- 239000000203 mixture Substances 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 title claims abstract description 51
- 239000004568 cement Substances 0.000 claims abstract description 31
- -1 calcium aluminates Chemical class 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 12
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 11
- 239000010440 gypsum Substances 0.000 claims abstract description 11
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 8
- 239000011575 calcium Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 229910001653 ettringite Inorganic materials 0.000 claims description 14
- 239000000378 calcium silicate Substances 0.000 claims description 13
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 13
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 7
- 230000003068 static effect Effects 0.000 abstract description 31
- 238000004898 kneading Methods 0.000 abstract description 21
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 description 14
- 239000002893 slag Substances 0.000 description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 7
- 150000008041 alkali metal carbonates Chemical class 0.000 description 7
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 7
- 229910052808 lithium carbonate Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000000292 calcium oxide Substances 0.000 description 6
- 235000012255 calcium oxide Nutrition 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000004567 concrete Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013441 quality evaluation Methods 0.000 description 3
- 229910021487 silica fume Inorganic materials 0.000 description 3
- 229910004261 CaF 2 Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- KWMLJOLKUYYJFJ-UHFFFAOYSA-N 2,3,4,5,6,7-Hexahydroxyheptanoic acid Chemical compound OCC(O)C(O)C(O)C(O)C(O)C(O)=O KWMLJOLKUYYJFJ-UHFFFAOYSA-N 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000863 Ferronickel Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- VEUACKUBDLVUAC-UHFFFAOYSA-N [Na].[Ca] Chemical compound [Na].[Ca] VEUACKUBDLVUAC-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- RGKMZNDDOBAZGW-UHFFFAOYSA-N aluminum calcium Chemical compound [Al].[Ca] RGKMZNDDOBAZGW-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- USOPFYZPGZGBEB-UHFFFAOYSA-N calcium lithium Chemical compound [Li].[Ca] USOPFYZPGZGBEB-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 229910052598 goethite Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- HQRPHMAXFVUBJX-UHFFFAOYSA-M lithium;hydrogen carbonate Chemical compound [Li+].OC([O-])=O HQRPHMAXFVUBJX-UHFFFAOYSA-M 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
本発明は、速硬性グラウト組成物及び速硬性グラウト材に関する。詳しくは、高い流動性があり且つ短時間で高い静弾性係数が得られる速硬性グラウト組成物及び速硬性グラウト材に関する。 The present invention relates to a fast-setting grout composition and a fast-setting grout material. Specifically, the present invention relates to a fast-setting grout composition and a fast-setting grout material that have high fluidity and can obtain a high static elastic modulus in a short time.
土木構造物や建築構造物の構築又は補修、或いは機械の設置等において、流動性の高いセメント系グラウト材が用いられている。道路や鉄道等の構造物の補修工事等のように工事できる時間が限られている場合のように、グラウト材の充填後速やかに強度発現する速硬性グラウト材が使用されることもあり、速硬性グラウト材が提案されている（例えば特許文献１〜３参照）。 Cement-type grout materials with high fluidity are used in the construction or repair of civil engineering structures and building structures, or in the installation of machines. A fast-hardening grout material that quickly develops strength after filling with grout material is sometimes used, such as when repair work for roads, railways, and other structures is limited. Hard grout materials have been proposed (see, for example, Patent Documents 1 to 3).
しかし、補修工事における部材同士の接合部分の定着やボルトの固定等グラウト材の使用箇所によっては、速やかに高い強度が必要なだけではなく、速やかに硬くなる、即ち、速やかに静弾性係数が高くなるグラウト材が必要な場合がある。 However, depending on where the grout material is used, such as fixing the joints between members and fixing bolts in repair work, not only does it require high strength quickly, but it quickly hardens, i.e., it has a high static elastic modulus. A grout material may be required.
本発明は、混練後の流動性が高く且つ硬化後速やかに高い静弾性係数が得られる速硬性グラウト組成物及び速硬性グラウト材を提供することを目的とする。 An object of the present invention is to provide a fast-hardening grout composition and a fast-hardening grout material that have high fluidity after kneading and can obtain a high static elastic modulus immediately after curing.
本発明者は、前記課題解決のため鋭意検討した結果、特定のセメントと、特定の混和材料と、特定の細骨材を含有することにより、上記課題を解決できることを見出し、本発明を完成させた。即ち、本発明は、以下の（１）〜（４）で表す速硬性グラウト組成物、及び（５）で表す速硬性グラウト材である。
（１）珪酸カルシウムを主成分とするセメントと、エトリンガイト系速硬材と、細骨材を含有し、前記細骨材中における重量骨材の含有率が２５質量％以上である速硬性グラウト組成物。
（２）結合材１００質量部に対し、１６０〜３００質量部となる量の細骨材を含む上記（１）の速硬性グラウト組成物。
（３）上記エトリンガイト系速硬材がカルシウムアルミネート類と石膏を主成分とする上記（１）又は（２）の速硬性グラウト組成物。
（４）上記重量骨材の硬度が６．０以上である上記（１）〜（３）何れかの速硬性グラウト組成物。
（５）上記（１）〜（４）何れかの速硬性グラウト組成物と、該速硬性グラウト組成物１００質量部に対し１０〜２０質量部の水とを混練してなる速硬性グラウト材。
As a result of intensive studies for solving the above problems, the present inventor has found that the above problems can be solved by containing a specific cement, a specific admixture, and a specific fine aggregate, thereby completing the present invention. It was. That is, this invention is the quick-hardening grout composition represented by the following (1)-(4), and the quick-hardening grout material represented by (5).
(1) A fast-hardening grout composition containing a cement containing calcium silicate as a main component, an ettringite-based quick-hardening material, and a fine aggregate, wherein the content of heavy aggregate in the fine aggregate is 25% by mass or more. object.
(2) The fast-hardening grout composition according to (1), including an amount of fine aggregate of 160 to 300 parts by mass with respect to 100 parts by mass of the binder.
(3) The quick-setting grout composition according to (1) or (2), wherein the ettringite-based quick-hardening material comprises calcium aluminates and gypsum as main components.
(4) The fast-setting grout composition according to any one of (1) to (3), wherein the weight aggregate has a hardness of 6.0 or more.
(5) A fast-hardening grout material obtained by kneading any of the quick-hardening grout compositions (1) to (4) above and 10 to 20 parts by weight of water with respect to 100 parts by weight of the quick-hardening grout composition.
本発明によれば、混練後の流動性が高く且つ硬化後速やかに高い静弾性係数が得られる速硬グラウト組成物が得られる。また、本発明によれば、流動性が高く且つ硬化後速やかに高い静弾性係数が得られる速硬性グラウト材が得られる。本発明によれば、Ｊ１４漏斗流下時間が８±４秒以内と流動性が高く、且つ材齢１時間に置ける静弾性係数が１５ｋＮ／ｍｍ２と高い速硬性グラウト組成物及び速硬性グラウト材が得られる。 According to the present invention, it is possible to obtain a fast-hardening grout composition that has high fluidity after kneading and can obtain a high static elastic modulus immediately after curing. Moreover, according to this invention, the quick-hardening grout material which has high fluidity and can obtain a high static elastic modulus immediately after hardening is obtained. According to the present invention, J 14 funnel flow-times of 8 ± 4 seconds within a high fluidity, and the age static elastic modulus put in 1 hour 15 kN / mm 2 and high fast-curing grout composition and fast curing grout Is obtained.
本発明の速硬性グラウト組成物は、珪酸カルシウムを主成分とするセメントと、エトリンガイト系速硬材と、細骨材を含有し、前記細骨材中における重量骨材の含有率が２５質量％以上である。なお、％は特に示す場合および単位固有の場合を除き質量％である。 The quick-hardening grout composition of the present invention contains cement containing calcium silicate as a main component, ettringite-based quick-hardening material, and fine aggregate, and the content ratio of heavy aggregate in the fine aggregate is 25% by mass. That's it. In addition,% is mass% except the case where it shows in particular and the case specific to a unit.
珪酸カルシウムを主成分とするセメントとしては、各種ポルトランドセメント、フライアッシュ・高炉スラグ・シリカフュームなどが任意の割合で混和された混合セメント、エコセメントなどが使用可能である。ここで珪酸カルシウムを主成分とするとは、含まれるセメントクリンカ粉砕物中において珪酸カルシウム鉱物（Ｃ３Ｓ、Ｃ２Ｓ）を５０質量％以上含むことをいい、好ましくは６０質量％以上含むことをいい、より好ましくは７０質量％以上含むことをいう。 As the cement containing calcium silicate as a main component, various portland cements, mixed cements in which fly ash, blast furnace slag, silica fume and the like are mixed at an arbitrary ratio, eco-cement, and the like can be used. Here, “having calcium silicate as a main component” means containing 50 mass% or more, preferably 60 mass% or more of calcium silicate mineral (C 3 S, C 2 S) in the pulverized cement clinker. More preferably, it means 70% by mass or more.
本発明におけるエトリンガイト系速硬材とは、水和反応或いは水及びセメントとの反応によりエトリンガイト（３ＣａＯ・Ａｌ２Ｏ３・３ＣａＳＯ４・３２Ｈ２Ｏ）を生成する急硬材を云い、カルシウムアルミネート類と石膏を含有する急硬材が好ましい。 The ettringite-based rapid-material in the present invention, refers to sudden hardwood to produce ettringite (3CaO · Al 2 O 3 · 3CaSO 4 · 32H 2 O) by reaction with hydration or Mizuoyobi cement, calcium aluminate Rapid hardwood containing lime and gypsum is preferred.
本発明におけるカルシウムアルミネート類とは、ＣａＯをＣ、Ａｌ２Ｏ３をＡ、及びＦｅ２Ｏ３をＦ、Ｎａ２ＯをＮとして表したとき、Ｃ３Ａ、Ｃ２Ａ、Ｃ１２Ａ７、Ｃ５Ａ３、ＣＡ、Ｃ３Ａ５、又はＣＡ２等と表示される鉱物組成を有するカルシウムアルミネート、Ｃ２ＡＦ及びＣ４ＡＦ等と表示されるカルシウムアルミノフェライト、カルシウムアルミネートにハロゲンが固溶又は置換したＣ３Ａ３・ＣａＦ２やＣ１１Ａ７・ＣａＦ２等と表示される（但し、ここにおけるＦはＦｅ２Ｏ３ではなくフッ素元素を意味する。）カルシウムフロロアルミネートを含むカルシウムハロアルミネート、Ｃ８ＮＡ３やＣ３Ｎ２Ａ５等と表示されるカルシウムナトリウムアルミネート、カルシウムリチウムアルミネートや、一般的に市販されているアルミナセメントや超速硬セメント、並びにこれらにＳｉＯ２、Ｋ２Ｏ、Ｆｅ２Ｏ３、ＴｉＯ２等が固溶又は化合したものを総称するものである。 The calcium aluminates in the present invention are C 3 A, C 2 A, C 12 A when CaO is C, Al 2 O 3 is A, Fe 2 O 3 is F, and Na 2 O is N. 7 , calcium aluminate having a mineral composition represented as C 5 A 3 , CA, C 3 A 5 , or CA 2, calcium aluminoferrite and calcium aluminate represented as C 2 AF and C 4 AF, etc. halogen is displayed as a solid solution or substituted C 3 a 3 · CaF 2 and C 11 a 7 · CaF 2, etc. (however, F the definitive herein means fluorine element rather than Fe 2 O 3.) calcium fluorosilicone aluminum calcium halophosphate aluminate containing sulfonates, calcium sodium aluminate which is displayed C 8 NA 3 or C 3 N 2 a 5, etc., calcium lithium aluminate With or are those commonly commercially available alumina cement and ultra rapid setting cement, as well as the SiO 2, K 2 O, Fe 2 O 3, TiO 2 etc. These are collectively referred to those solid solution or compound.
カルシウムアルミネート類を得る方法としては、ＣａＯ原料とＡｌ２Ｏ３原料等をロータリーキルンや電気炉等によって熱処理して得る方法が挙げられる。カルシウムアルミネート類を製造する際のＣａＯ原料としては、例えば、石灰石や貝殻等の炭酸カルシウム、消石灰等の水酸化カルシウム、あるいは、生石灰等の酸化カルシウムを挙げることができる。また、Ａｌ２Ｏ３原料としては、ボーキサイト、石油化学工業等より排出される廃アルミナ触媒等のアルミナ廃棄物、アルミ鉱滓（アルミドロス）やその精錬過程で発生するアルミ残灰、アルミニウム切削屑等の廃金属アルミニウム、アルミニウム粉末等が挙げられる。 Examples of the method for obtaining calcium aluminates include a method in which a CaO raw material and an Al 2 O 3 raw material are heat-treated with a rotary kiln or an electric furnace. Examples of the CaO raw material for producing calcium aluminate include calcium carbonate such as limestone and shells, calcium hydroxide such as slaked lime, and calcium oxide such as quick lime. Al2O3 raw materials include alumina waste such as waste alumina catalyst discharged from bauxite, petrochemical industry, etc., aluminum slag (aluminum dross), aluminum residual ash generated during the refining process, waste metal such as aluminum cutting waste Aluminum, aluminum powder, etc. are mentioned.
カルシウムアルミネート類の粉末度は、ブレーン比表面積で３５００cm２／ｇ以上とすると、添加量が少ない場合においても急硬性が得られやすいことから好ましい。より好ましい粉末度はブレーン比表面積で４０００cm２／ｇ以上とする。また、カルシウムアルミネート類の粉末度はあまり高くすると経済的でなく流動性も低下することから、好ましくはブレーン比表面積で１００００cm２／ｇ以下、更に好ましくは８０００cm２／ｇ以下とする。 The fineness of the calcium aluminate is preferably 3500 cm 2 / g or more in terms of the specific surface area of the brane because rapid hardening can be easily obtained even when the addition amount is small. A more preferable fineness is 4000 cm 2 / g or more in terms of Blaine specific surface area. In addition, if the fineness of the calcium aluminate is too high, it is not economical and the fluidity is lowered. Therefore, the Blaine specific surface area is preferably 10,000 cm 2 / g or less, more preferably 8000 cm 2 / g or less.
本発明における石膏とは、無水石膏、二水石膏又は半水石膏を主成分とする粉末であれば特に限定されないが、強度増 進作用の観点からII型無水石膏を主成分とするものが好ましい。石膏は、セメント中のアルミネート相やカルシウ ムアルミネート類等と反応しエトリンガイトを生成させ、これにより硬化体の収縮を抑制することができるとともに、初期強度を高める。使用する石膏の粉末度はブレーン比表面積で３０００ｃｍ２／ｇ以上のものが、反応活性が得られるので好ましい。より好ましくは粉末度が４０００ｃｍ２／ｇ以上のものがよい。粉末度の上限は特に限定されないが、粉末度を高めるとコストが嵩む割にはその効果が鈍化することから概ねブレーン比表面積で１００００ｃｍ２／ｇ以下とすることが適当である。 The gypsum in the present invention is not particularly limited as long as it is a powder mainly composed of anhydrous gypsum, dihydrate gypsum, or hemihydrate gypsum, but is preferably composed mainly of type II anhydrous gypsum from the viewpoint of strength enhancing action. . Gypsum reacts with the aluminate phase and calcium aluminate in the cement to produce ettringite, thereby suppressing the shrinkage of the cured body and increasing the initial strength. The fineness of the gypsum used is preferably 3000 cm 2 / g or more in terms of Blaine specific surface area because reaction activity is obtained. More preferably, the fineness is 4000 cm 2 / g or more. Although the upper limit of the fineness is not particularly limited, it is appropriate to increase the fineness to 10000 cm 2 / g or less in terms of the specific surface area of the brane because the effect of the increase in the cost increases.
石膏の含有量はカルシウムアルミネート類１００質量部に対し２５〜５０質量部が好ましい。２５質量部未満では強度が不足する虞がある。５０質量部を超えると、流動性が低下し、必要な流動性を確保するために水量を増加させると強度が不足する。強度が高く且つ流動性が得易いことから、石膏の含有量をカルシウムアルミネート類１００質量部に対し、３０〜４０質量部とすることがより好ましい。 As for content of gypsum, 25-50 mass parts is preferable with respect to 100 mass parts of calcium aluminates. If it is less than 25 parts by mass, the strength may be insufficient. If it exceeds 50 parts by mass, the fluidity is lowered, and the strength is insufficient when the amount of water is increased to ensure the necessary fluidity. Since the strength is high and fluidity is easily obtained, the gypsum content is more preferably 30 to 40 parts by mass with respect to 100 parts by mass of the calcium aluminate.
エトリンガイト系速硬材の含有量は、珪酸カルシウムを主成分とするセメント１００質量部に対し９０〜１５０質量部が好ましく、１１０〜１３０質量部がより好ましい。９０質量部未満では低温環境下において初期強度が不足する虞があり、１５０質量部を超えると充填可能な流動性が得られる時間、即ち可使時間が短くなる。 The content of the ettringite-based quick-hardening material is preferably 90 to 150 parts by mass, and more preferably 110 to 130 parts by mass with respect to 100 parts by mass of cement containing calcium silicate as a main component. If the amount is less than 90 parts by mass, the initial strength may be insufficient in a low temperature environment. If the amount exceeds 150 parts by mass, the time for obtaining fluidity that can be filled, that is, the pot life is shortened.
本発明に用いる細骨材は、重量骨材を２５質量％以上含有する細骨材を用いる。細骨材全てが重量骨材でもよい。本発明に用いる重量骨材としては、密度３．０〜６．５ｇ／ｃｍ３のものが好ましい。密度３．０ｇ／ｃｍ３未満では、短時間で高い静弾性係数が得られ難く、密度６．５ｇ／ｃｍ３を超えると重量骨材が沈降し易くなる。また、用いる重量骨材が、モース硬度６以上のものが短時間に高い静弾性係数を得易いことから好ましく、モース硬度７以上のものがより好ましい。本発明で用いる重量骨材としては、例えば、橄欖岩、柘榴石、重晶石、針鉄鉱、褐鉄鉱、バリウム方解石、銅スラグ、フェロニッケルスラグ、フェロクロムスラグ、クロマイト、電気炉酸化スラグ骨材等が好ましい例として挙げられ、これらの一種又は二種以上を使用できる。本発明で用いる細骨材には、重量骨材以外の細骨材を７５質量％まで含有することができる。重量骨材以外の細骨材（普通骨材からなる細骨材）の含有率が７５質量％を超える、即ち重量骨材の含有率が２５質量％未満では、短時間に高い静弾性係数が得られない。重量骨材以外の細骨材としては、モース硬度５以上のものが短時間に高い静弾性係数が得られ易いことから好ましく、モース硬度６以上のものがより好ましい。重量骨材以外の細骨材としては、例えば、川砂、陸砂、海砂、砕砂、珪砂、高炉スラグ細骨材等のうち密度３．０ｇ／ｃｍ３未満のものを用いることができる。好ましくは、モース硬度５以上のものが短時間に高い静弾性係数が得られ易いことから好ましく、モース硬度６以上のものがより好ましい。 As the fine aggregate used in the present invention, a fine aggregate containing 25 mass% or more of heavy aggregate is used. All of the fine aggregates may be heavy aggregates. As a heavy aggregate used in the present invention, one having a density of 3.0 to 6.5 g / cm 3 is preferable. When the density is less than 3.0 g / cm 3, it is difficult to obtain a high static elastic modulus in a short time, and when the density exceeds 6.5 g / cm 3 , the heavy aggregate is likely to settle. Further, the heavy aggregate to be used is preferably one having a Mohs hardness of 6 or more because it is easy to obtain a high static elastic modulus in a short time, and one having a Mohs hardness of 7 or more is more preferred. As heavy aggregates used in the present invention, for example, meteorite, meteorite, barite, goethite, limonite, barium calcite, copper slag, ferronickel slag, ferrochrome slag, chromite, electric furnace oxidation slag aggregate, etc. It is mentioned as a preferred example, and one or more of these can be used. The fine aggregate used in the present invention can contain fine aggregate other than heavy aggregate up to 75 mass%. When the content of fine aggregates other than heavy aggregates (fine aggregates composed of ordinary aggregates) exceeds 75% by mass, that is, when the content of heavy aggregates is less than 25% by mass, a high static elastic modulus is obtained in a short time. I can't get it. As the fine aggregate other than the heavy aggregate, those having a Mohs hardness of 5 or more are preferable because a high static elastic modulus is easily obtained in a short time, and those having a Mohs hardness of 6 or more are more preferable. As fine aggregates other than heavy aggregates, for example, those having a density of less than 3.0 g / cm 3 among river sand, land sand, sea sand, crushed sand, quartz sand, blast furnace slag fine aggregate and the like can be used. Preferably, those having a Mohs hardness of 5 or more are preferable because a high static elastic modulus is easily obtained in a short time, and those having a Mohs hardness of 6 or more are more preferable.
本発明に用いる細骨材の含有量は、結合材１００質量部に対し１６０〜３００質量部とすることが好ましい。１６０質量部未満では短時間の静弾性係数が不足する虞があり、３００質量部を超えると材料分離を起こし易い。より高い静弾性係数が得られ且つ材料分離を起こし難いことから、細骨材の含有量は、結合材１００質量部に対し１８０〜２８０質量部とすることがより好ましく、２００〜２５０質量部とすることが最も好ましい。ここで、結合材とは、セメント、エトリンガイト系速硬材、高炉スラグ粉末等の潜在水硬性物質及びシリカフューム等のポゾランをいう。 The content of the fine aggregate used in the present invention is preferably 160 to 300 parts by mass with respect to 100 parts by mass of the binder. If the amount is less than 160 parts by mass, the short-term static elastic modulus may be insufficient. If the amount exceeds 300 parts by mass, material separation is likely to occur. Since a higher static elastic modulus is obtained and it is difficult to cause material separation, the content of the fine aggregate is more preferably 180 to 280 parts by mass with respect to 100 parts by mass of the binder, and 200 to 250 parts by mass. Most preferably. Here, the binder refers to a latent hydraulic material such as cement, ettringite-based fast-hardening material, blast furnace slag powder, and pozzolanic such as silica fume.
本発明の速硬性グラウト組成物には、珪酸カルシウムを主成分とするセメント、細骨材材及びエトリンガイト系速硬材以外に、他の混和材料及び粗骨材から選ばれる一種又は二種以上を本発明の効果を実質損なわない範囲で併用することができる。この混和材料としては、例えばセメント分散剤（減水剤、高性能減水剤、ＡＥ減水剤、高性能ＡＥ減水剤、流動化剤等を含む。）、セメント用ポリマー、増粘剤、膨張材、防水材、防錆剤、収縮低減剤、保水剤、顔料、繊維、撥水剤、白華防止剤、急結剤（材）、上記以外の急硬剤（材）、凝結遅延剤、発泡剤、消泡剤、高炉スラグ微粉末、シリカフュームやフライアッシュ等のポゾラン、石粉、撥水剤、表面硬化剤等が挙げられる。また、粗骨材としては、例えば、川砂利、陸砂利、砕石、高炉スラグ細骨材、電気炉酸化スラグ粗骨材等のスラグ粗骨材及び人工軽量粗骨材等が挙げられる。また、本発明で使用される混和材料は、粉末状でも水溶液状でも使用可能であるが、施工現場で複雑な計量操作等を必要とせずに、所定量の水を計量し混練するだけですぐに使用できるように、本発明のセメント組成物が配合成分の全てが予め混合され粉末状である所謂「プレミックス製品」であるほうが施工現場での作業性が良い為、使用する混和材料自体も全て粉末状であることが好ましい。 The quick-hardening grout composition of the present invention includes one or more selected from other admixtures and coarse aggregates, in addition to cement, fine aggregate and ettringite-based quick hardener mainly composed of calcium silicate. It can use together in the range which does not impair the effect of this invention substantially. Examples of the admixture include cement dispersants (including water reducing agents, high performance water reducing agents, AE water reducing agents, high performance AE water reducing agents, fluidizing agents, etc.), cement polymers, thickeners, expanding materials, waterproofing. Materials, rust preventives, shrinkage reducing agents, water retention agents, pigments, fibers, water repellents, anti-whitening agents, quick setting agents (materials), other quick hardening agents (materials), setting retarders, foaming agents, Examples include antifoaming agents, blast furnace slag fine powder, pozzolanes such as silica fume and fly ash, stone powder, water repellents, surface hardeners and the like. Examples of the coarse aggregate include slag coarse aggregate such as river gravel, land gravel, crushed stone, blast furnace slag fine aggregate, electric furnace oxidized slag coarse aggregate, artificial lightweight coarse aggregate, and the like. In addition, the admixture used in the present invention can be used in the form of powder or aqueous solution, but it does not require a complicated measuring operation etc. at the construction site, and it is just necessary to measure and knead a predetermined amount of water. Since the cement composition of the present invention is a so-called “premix product” in which all of the components are premixed and in powder form, the workability at the construction site is better. It is preferable that all are powdery.
本発明の速硬性グラウト組成物には、アルカリ金属炭酸塩を含有することが好ましい。上記成分とアルカリ金属炭酸塩を併用することで、流動性を確保し易くなり、可使時間を長くできる。アルカリ金属炭酸塩としては、炭酸ナトリウム、炭酸カリウム、炭酸リチウム、重炭酸ナトリウム、重炭酸カリウム及び重炭酸リチウム等が挙げられ、炭酸リチウムと炭酸リチウム以外のアルカリ金属炭酸塩を併用することが好ましく、炭酸リチウムと炭酸ナトリウムを併用することが最も好ましい。本発明においてアルカリ金属炭酸塩の含有量は、結合材１００質量部に対し、流動性を得易く且つ可使時間を長くできることから、０．４〜１質量部とすることが好ましく、より好ましくは０．６〜０．８質量部とする。 The fast-setting grout composition of the present invention preferably contains an alkali metal carbonate. By using the above component and alkali metal carbonate in combination, it becomes easy to ensure fluidity and the pot life can be extended. Examples of the alkali metal carbonate include sodium carbonate, potassium carbonate, lithium carbonate, sodium bicarbonate, potassium bicarbonate and lithium bicarbonate, and it is preferable to use an alkali metal carbonate other than lithium carbonate and lithium carbonate, Most preferably, lithium carbonate and sodium carbonate are used in combination. In the present invention, the content of the alkali metal carbonate is preferably 0.4 to 1 part by mass, more preferably 100 parts by mass of the binder, since fluidity can be easily obtained and the pot life can be increased. 0.6 to 0.8 parts by mass.
また、本発明の速硬性グラウト組成物には、流動性を確保し易くなり且つ可使時間を長くできることから、遅延剤を含有することが好ましい。本発明に使用する遅延剤としては、珪酸カルシウム鉱物の水和を遅延するものであれば使用できるが、可使時間を長く確保した上で短時間の静弾性係数を高くすることができることから、オキシカルボン酸及びオキシカルボン酸塩から選ばれる一種又は二種以上を用いることが好ましく、オキシカルボン酸及びオキシカルボン酸塩としては、例えばクエン酸、グルコン酸、酒石酸、ヘプトン酸、並びにこれらの塩等が挙げられる。オキシカルボン酸塩としては、アルカリ金属塩、アルカリ土類金属塩等が好適な例として挙げられる。本発明において遅延剤の含有量は、結合材１００質量部に対し、流動性を得易く、可使時間を長く且つ短時間の静弾性係数を高くすることができることから、０．０５〜０．６質量部とすることが好ましく、より好ましくは０．１〜０．４質量部とする。 Moreover, since the quick-hardening grout composition of this invention becomes easy to ensure fluidity | liquidity and can extend a pot life, it is preferable to contain a retarder. As the retarder used in the present invention, it can be used as long as it delays the hydration of the calcium silicate mineral, but since it can secure a long pot life and can increase the static elastic modulus in a short time, It is preferable to use one or more selected from oxycarboxylic acid and oxycarboxylate, and examples of oxycarboxylic acid and oxycarboxylate include citric acid, gluconic acid, tartaric acid, heptonic acid, and salts thereof. Is mentioned. Preferred examples of the oxycarboxylate include alkali metal salts and alkaline earth metal salts. In the present invention, the content of the retarder can be easily obtained from 100 parts by mass of the binding material, can be used for a longer pot life, and can increase the static elastic modulus in a short time. The amount is preferably 6 parts by mass, more preferably 0.1 to 0.4 parts by mass.
また、本発明の速硬性グラウト組成物には、流動性を確保し易くなり且つ短時間の静弾性係数を高くすることができることから、セメント分散剤を含有することが好ましい。本発明に使用するセメント分散剤としては、流動性を確保した上で短時間の静弾性係数をより高くすることができることから、高性能減水剤及び高性能ＡＥ減水剤から選ばれる一種又は二種以上を用いることが好ましい。セメント分散剤としては、例えば、ポリカルボン酸塩系、ナフタレンスルホン酸塩系、メラミンスルホン酸塩系、リグニンスルホン酸塩系などのセメント分散剤を用いることができる。本発明においてセメント分散剤の含有量は、結合材１００質量部に対し、流動性を得易く且つ短時間の静弾性係数を高くすることができることから、０．１〜１質量部とすることが好ましく、より好ましくは０．２〜０８質量部とする。 In addition, the fast-setting grout composition of the present invention preferably contains a cement dispersant because it is easy to ensure fluidity and can increase the static elastic modulus in a short time. As the cement dispersant used in the present invention, one or two kinds selected from a high performance water reducing agent and a high performance AE water reducing agent can be obtained because the static elastic modulus in a short time can be further increased while ensuring fluidity. It is preferable to use the above. As the cement dispersant, for example, a cement dispersant such as polycarboxylate, naphthalene sulfonate, melamine sulfonate, and lignin sulfonate can be used. In the present invention, the content of the cement dispersant is set to 0.1 to 1 part by mass with respect to 100 parts by mass of the binder because fluidity can be easily obtained and the short-term static elastic modulus can be increased. Preferably, it is 0.2 to 08 parts by mass.
本発明の速硬性グラウト組成物を製造する方法は、特に限定されず、例えば、重力式コンクリートミキサ、ヘンシェル式ミキサ、ナウターミキサ、レーディゲミキサ、Ｖ型混合器、リボンミキサ、パドルミキサ等のミキサを使用し、所定量の本発明の速硬性グラウト組成物の各材料を混合することで好適に製造することができる。このとき用いるミキサは、連続式ミキサでもバッチ式ミキサでも良い。各材料のミキサ内への投入順序は特に限定されない。一種ずつ添加してもよく、一部又は全部を同時添加してもよい。また、袋やポリエチレン製容器等の容器に各材料を計り取り投入する方法により、本発明の速硬性グラウト組成物を製造することもできる。 The method for producing the fast-curing grout composition of the present invention is not particularly limited. It can manufacture suitably by mixing each material of the predetermined amount of the quick-hardening grout composition of this invention. The mixer used at this time may be a continuous mixer or a batch mixer. The order in which each material is charged into the mixer is not particularly limited. They may be added one by one, or some or all of them may be added simultaneously. Moreover, the quick-hardening grout composition of this invention can also be manufactured by the method of measuring and charging each material into containers, such as a bag and a polyethylene container.
本発明の速硬性グラウト組成物は、水を混練に用いる。混練する方法は特に限定されず、例えば水に本発明の速硬性グラウト組成物を全量加え混練する方法、水に速硬性グラウト組成物を混練しながら加えさらに混練する方法、本発明の速硬性グラウト組成物に水を混練しながら加えさらに混練する方法、水及び本発明の速硬性グラウト組成物のそれぞれ一部ずつを２つ以上に分けて混練し、混練したものを合わせてさらに混練する方法等がある。また、混練に用いる器具や混練装置も特に限定されないが、ミキサを用いることが量を多く混練できるので好ましい。用いることのできるミキサとしては連続式ミキサでもバッチ式ミキサでも良く、例えばパン型コンクリートミキサ、パグミル型コンクリートミキサ、重力式コンクリートミキサ、グラウトミキサ、オムニミキサ、ハンドミキサ、左官ミキサ等が挙げられる。また、本発明の速硬性グラウト組成物の混練に用いる水量は、流動性を確保し易くなり且つ短時間の静弾性係数を高くすることができることから、速硬性グラウト組成物１００質量部に対し１０〜２０質量部とすることが好ましく、流動性を得易く且つ短時間の静弾性係数を高くすることができることから、１２〜１５質量部とすることがより好ましい。 The quick-setting grout composition of the present invention uses water for kneading. The method of kneading is not particularly limited, for example, a method of adding and kneading the entire amount of the fast-setting grout composition of the present invention to water, a method of adding and kneading the quick-setting grout composition to water while kneading, and a method of kneading of the present invention A method of adding water to the composition while kneading and further kneading, a method of kneading water and a part of each of the fast-curing grout compositions of the present invention in two or more, and kneading the kneaded ones further There is. Moreover, although the apparatus and kneading apparatus used for kneading are not particularly limited, it is preferable to use a mixer because a large amount can be kneaded. The mixer that can be used may be a continuous mixer or a batch mixer, and examples thereof include a pan-type concrete mixer, a pug mill-type concrete mixer, a gravity-type concrete mixer, a grout mixer, an omni mixer, a hand mixer, and a plaster mixer. Further, the amount of water used for kneading the fast-curing grout composition of the present invention is 10% with respect to 100 parts by weight of the fast-curing grout composition because it is easy to secure fluidity and can increase the static elastic modulus in a short time. It is preferable to set it as -20 mass parts, and since it is easy to acquire fluidity | liquidity and can raise the static elastic modulus for a short time, it is more preferable to set it as 12-15 mass parts.
本発明の速硬性グラウト材は、上記速硬性グラウト組成物１００質量部に対し１０〜２０質量部の水とを混練してなる速硬性グラウト材である。 The fast-hardening grout material of the present invention is a fast-hardening grout material obtained by kneading 10 to 20 parts by weight of water with respect to 100 parts by weight of the fast-hardening grout composition.
［実施例１］
重量骨材からなる細骨材２種類と普通骨材からなる細骨材１種類を、表１に示す配合割合で混合することで、５種類の細骨材を作製した。珪酸カルシウムを主成分とするセメントとエトリンガイト系速硬材の合計（結合材）１００質量部に対し、作製した細骨材２３０質量部、アルカリ金属炭酸塩０．７５質量部、セメント分散剤０．４０質量部、消泡剤０．０３質量部及び遅延剤０．２０質量部を乾式混合することで、速硬性グラウト組成物を５種類（配合Ｎｏ．１〜５）作製した。このときのエトリンガイト系速硬材の含有量は、珪酸カルシウムを主成分とするセメント１００質量部に対し１２０質量部とした。また、エトリンガイト系速硬材は、カルシウムアルミネート類１００質量部に対し３５質量部とした。また、アルカリ金属炭酸塩は、炭酸リチウム１００質量部に対し、炭酸ナトリウム１００質量部とした。使用材料を以下に示した。
＜使用材料＞
・重量骨材ａ ： 橄欖岩からなる細骨材（密度；３．２５ｇ／ｃｍ３、モース硬度；７．０）
・重量骨材ｂ ： 電気炉酸化スラグ細骨材（密度；４．００ｇ／ｃｍ３、モース硬度；８．０）
・普通骨材 ： 珪砂（密度；２．６０ｇ／ｃｍ３、モース硬度；７．０）
・珪酸カルシウムを主成分とするセメント ： 普通ポルトランドセメント（太平洋セメント社製、珪酸カルシウム鉱物を７０質量％以上含有）
・カルシウムアルミネート類 ： アルミナセメント（主成分；ＣａＯ・Ａｌ２Ｏ３）
・石膏 ： II型無水石膏(ブレーン比表面積；７５００ｃｍ２／ｇ）
・炭酸リチウム ： 無水炭酸リチウム（試薬、関東化学社製）
・炭酸ナトリウム ： 無水炭酸ナトリウム（試薬、関東化学社製）
・セメント分散剤 ： ナフタレンスルホン酸系高性能減水剤（商品名「マイティ１００」、粉末状、花王社製）
・消泡剤 ： サンノプコ社製消泡剤（商品名「ＳＮディフォーマーＡＨＰ」、粉末状）
・遅延剤 ： クエン酸ナトリウム（試薬、関東化学社製）
[Example 1]
Five types of fine aggregates were produced by mixing two types of fine aggregates composed of heavy aggregates and one type of fine aggregates composed of ordinary aggregates at a blending ratio shown in Table 1. 230 parts by mass of fine aggregate, 0.75 parts by mass of alkali metal carbonate, 0.1% by mass of a cement dispersant, and 100 parts by mass of a cement (based on calcium silicate) and an ettringite-based quick hardening material (binder). By dry mixing 40 parts by mass, 0.03 parts by mass of antifoaming agent and 0.20 parts by mass of retarder, five types of fast-curing grout compositions (formulation Nos. 1 to 5) were produced. At this time, the content of the ettringite-based quick-hardening material was 120 parts by mass with respect to 100 parts by mass of cement containing calcium silicate as a main component. Moreover, the ettringite-based quick-hardening material was 35 parts by mass with respect to 100 parts by mass of the calcium aluminate. The alkali metal carbonate was 100 parts by mass of sodium carbonate with respect to 100 parts by mass of lithium carbonate. The materials used are shown below.
<Materials used>
-Heavy aggregate a: Fine aggregate made of peridotite (density: 3.25 g / cm 3 , Mohs hardness: 7.0)
・ Heavy aggregate b: Electric furnace oxidation slag fine aggregate (density: 4.00 g / cm 3 , Mohs hardness: 8.0)
-Normal aggregate: Silica sand (density; 2.60 g / cm 3 , Mohs hardness; 7.0)
・ Cement consisting mainly of calcium silicate: Ordinary Portland cement (manufactured by Taiheiyo Cement Co., Ltd. containing 70 mass% or more of calcium silicate mineral)
Calcium aluminate: Alumina cement (main component: CaO / Al 2 O 3 )
Gypsum: Type II anhydrous gypsum (Brain specific surface area; 7500 cm 2 / g)
・ Lithium carbonate: anhydrous lithium carbonate (reagent, manufactured by Kanto Chemical Co., Inc.)
・ Sodium carbonate: anhydrous sodium carbonate (reagent, manufactured by Kanto Chemical Co., Inc.)
・ Cement dispersant: Naphthalenesulfonic acid-based high-performance water reducing agent (trade name “Mighty 100”, powder, manufactured by Kao Corporation)
Antifoaming agent: Sannopco antifoaming agent (trade name “SN deformer AHP”, powder)
-Delay agent: Sodium citrate (reagent, manufactured by Kanto Chemical Co., Inc.)
作製した速硬性グラウト組成物１００質量部と水道水１３質量部をハンドミキサで混練し、速硬性グラウト材を５種類作製した。まず、金属性円筒容器（直径：２４ｃｍ、深さ：２５ｃｍ）に、水道水７８０ｇを入れ、ハンドミキサ（回転数：１０００ｒ．ｐ．ｍ．、攪拌羽根：直径１００ｍｍ円盤）の攪拌羽根が水に接する状態で該羽根を回転させながら、速硬性グラウト組成物６０００ｇを投入し、その後９０秒間混練した。混練前の各材料の温度は２０℃に調整し、混練、供試体作製及び流動性試験は、２０℃の恒温室内で行った。作製したグラウト材（グラウトモルタル）の品質試験として、以下に示す試験を行い、Ｊ１４漏斗による流下時間、可使時間、短時間材齢（材齢１時間及び材齢３時間）の圧縮強度、静弾性係数を求めた。試験結果を、表２に示した。
＜品質評価試験＞
・流動性試験
土木学会基準ＪＳＣＥ−Ｆ ５４１−１９９９「充填モルタルの流動性試験方法」に従い、Ｊ１４漏斗を用いて、混練直後の流下時間を測定した。
・凝結試験
ＪＩＳ Ａ １１４７「コンクリートの凝結時間試験方法」に準じて、作製した速硬性グラウト材（モルタル）の始発時間を測定した。作製した速硬性グラウト材は速硬性のため、始発時間の直前まで充填作業が可能な流動性を有していることから、始発時間を可使時間として評価した。
・圧縮強度試験
土木学会基準ＪＳＣＥ−Ｇ ５０５−２０１０「円柱供試体を用いたモルタルまたはセメントペーストの圧縮強度試験方法」に準じ、材齢１時間及び材齢３時間における圧縮強度を測定した。供試体の寸法は、直径５０ｍｍ、高さ１００ｍｍとした。また、養生は２０℃の恒温槽内で、材齢の直前まで型枠のまま湿潤養生とした。
・静弾性係数試験
。ＪＩＳ Ａ １１４９「コンクリートの静弾性係数試験方法」に準じて、作製した作製した速硬性グラウト材（モルタル）の材齢１時間と材齢３時間の静弾性係数を求めた。
100 parts by mass of the produced quick-hardening grout composition and 13 parts by weight of tap water were kneaded with a hand mixer to prepare five types of fast-setting grout materials. First, 780 g of tap water is put into a metallic cylindrical container (diameter: 24 cm, depth: 25 cm), and the stirring blade of the hand mixer (rotation speed: 1000 rpm) is mixed with water. While rotating the blades in contact with each other, 6000 g of a fast-hardening grout composition was added and then kneaded for 90 seconds. The temperature of each material before kneading was adjusted to 20 ° C., and kneading, specimen preparation, and fluidity test were performed in a constant temperature room at 20 ° C. Compressive strength of the prepared grout as a quality test (grout mortar) performs the following tests, flow time by J 14 funnel, pot life, short ages (age of 1 hour and age of 3 hours), The static elastic modulus was determined. The test results are shown in Table 2.
<Quality evaluation test>
- In accordance with the fluidity test Civil Engineering standard JSCE-F 541-1999 "Test Method of Flowability for Filling Mortar", with J 14 funnel was measured flow time immediately after kneading.
-Setting test In accordance with JIS A 1147 "Concrete setting time test method", the initial time of the quick hardening grout material (mortar) produced was measured. Since the produced fast-hardening grout material is fast-hardening, it has fluidity that allows filling work until just before the starting time, and therefore the starting time was evaluated as the pot life.
-Compressive strength test Compressive strength at a material age of 1 hour and a material age of 3 hours was measured according to JSCE-G 505-2010 "Method for testing compressive strength of mortar or cement paste using a cylindrical specimen". The dimensions of the specimen were 50 mm in diameter and 100 mm in height. In addition, the curing was carried out in a constant temperature bath at 20 ° C. with the form frame kept just before the age of the material.
・ Static modulus test. In accordance with JIS A 1149 “Testing Method for Static Elastic Modulus of Concrete”, the static elastic modulus of the produced fast-hardening grout material (mortar) at an age of 1 hour and an age of 3 hours was determined.
本発明の実施例に当たる速硬性グラウト組成物（配合Ｎｏ．１〜４）は、流動性に優れ、可使時間も充分であり、材齢１時間及び３時間における圧縮強度、静弾性係数ともに高かった。特に、細骨材中の重量骨材の含有率が５０〜１００質量％である速硬性グラウト組成物（配合Ｎｏ．１，２及び４）は、材齢１時間及び３時間における静弾性係数が高く優れていた。それに比べ、普通骨材のみ用いた配合Ｎｏ．５の速硬性グラウト組成物は、材齢１時間及び３時間における静弾性係数が、実施例に当たるものに比べて低かった。 The quick-hardening grout compositions (formulation Nos. 1 to 4) corresponding to the examples of the present invention are excellent in fluidity, have sufficient pot life, and have high compressive strength and static elastic modulus at a material age of 1 hour and 3 hours. It was. In particular, the quick-hardening grout composition (formulation No. 1, 2 and 4) having a heavy aggregate content of 50 to 100% by mass in the fine aggregate has a static elastic modulus at an age of 1 hour and 3 hours. It was high and excellent. In comparison, the compound No. using only ordinary aggregate. The quick-hardening grout composition of No. 5 had a lower static elastic modulus at an age of 1 hour and 3 hours than that of the example.
［実施例２］
実施例１で用いた細骨材１を用いて、結合材に対する細骨材の配合割合を変えた以外は実施例１と同様に速硬性グラウト組成物を３種類（配合Ｎｏ．６〜８）作製し、その品質評価試験も実施例１と同様に行った。品質評価試験の結果を、結合材に対する細骨材の配合割合とともに表３に示した。実施例１の配合Ｎｏ．１の速硬性グラウト組成物についても、試験結果を表３に合わせて示した。
[Example 2]
Three types of fast-setting grout compositions (composition Nos. 6 to 8) were used in the same manner as in Example 1 except that the fine aggregate 1 used in Example 1 was used and the blending ratio of the fine aggregate to the binder was changed. A quality evaluation test was performed in the same manner as in Example 1. The result of the quality evaluation test is shown in Table 3 together with the blending ratio of the fine aggregate to the binder. Formula No. 1 of Example 1 The test results of the quick-hardening grout composition of No. 1 are also shown in Table 3.
４配合速硬性グラウト組成物とも、流動性に優れ、可使時間も充分であり、材齢１時間及び３時間における圧縮強度、静弾性係数ともに高かった。結合材１００に対する細骨材の配合割合が１８０質量以上である速硬性グラウト組成物（配合Ｎｏ．１，７，８）は、材齢１時間及び３時間における静弾性係数が特に高く優れていた。 All of the four blended fast-hardening grout compositions were excellent in fluidity, had sufficient pot life, and had high compressive strength and static elastic modulus at age 1 and 3 hours. The fast-hardening grout composition (formulation No. 1, 7, 8) in which the blending ratio of the fine aggregate to the binder 100 is 180 mass or more was excellent with particularly high static elastic modulus at the age of 1 hour and 3 hours. .
本発明は、土木構造物や建築構造物の構築又は補修、或いは機械の設置等に用いることができる。特に道路や鉄道等の構造物の補修工事等のように工事できる時間が限られ、且つグラウト材の充填後速やかな強度発現が必要とされている箇所に好適に用いることができる。とりわけ、速やかに高い静弾性係数が必要な箇所の充填工事に好適に用いることができる。 INDUSTRIAL APPLICABILITY The present invention can be used for construction or repair of civil engineering structures and building structures, or for installation of machines. In particular, it can be suitably used in places where construction time such as repair work for structures such as roads and railways is limited and where rapid strength development is required after filling with grout material. In particular, it can be suitably used for filling work where a high static elastic modulus is required quickly.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012289187A JP6133598B2 (en) | 2012-12-29 | 2012-12-29 | Fast-hardening grout composition and fast-hardening grout material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012289187A JP6133598B2 (en) | 2012-12-29 | 2012-12-29 | Fast-hardening grout composition and fast-hardening grout material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2014129213A true JP2014129213A (en) | 2014-07-10 |
| JP6133598B2 JP6133598B2 (en) | 2017-05-24 |
Family
ID=51407996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012289187A Active JP6133598B2 (en) | 2012-12-29 | 2012-12-29 | Fast-hardening grout composition and fast-hardening grout material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6133598B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017008249A (en) * | 2015-06-24 | 2017-01-12 | 宇部興産株式会社 | Sol improver and soil improvement method |
| JP2017114743A (en) * | 2015-12-25 | 2017-06-29 | 太平洋マテリアル株式会社 | Rapid hardening fiber grout composition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6461339A (en) * | 1987-09-01 | 1989-03-08 | Denki Kagaku Kogyo Kk | High-strength cement composition |
| JPH0952744A (en) * | 1995-08-09 | 1997-02-25 | Chichibu Onoda Cement Corp | Mortar and concrete composition |
| JP2006069832A (en) * | 2004-09-01 | 2006-03-16 | Denki Kagaku Kogyo Kk | Extra quick hardening and highly flowable mortar composition, extra quick hardening and highly flowable mortar and extra quick hardening and highly flowable concrete using the mortar |
| WO2008059605A1 (en) * | 2006-11-17 | 2008-05-22 | Denki Kagaku Kogyo Kabushiki Kaisha | Cement mortar composition for grout and grout mortar obtained from the same |
-
2012
- 2012-12-29 JP JP2012289187A patent/JP6133598B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6461339A (en) * | 1987-09-01 | 1989-03-08 | Denki Kagaku Kogyo Kk | High-strength cement composition |
| JPH0952744A (en) * | 1995-08-09 | 1997-02-25 | Chichibu Onoda Cement Corp | Mortar and concrete composition |
| JP2006069832A (en) * | 2004-09-01 | 2006-03-16 | Denki Kagaku Kogyo Kk | Extra quick hardening and highly flowable mortar composition, extra quick hardening and highly flowable mortar and extra quick hardening and highly flowable concrete using the mortar |
| WO2008059605A1 (en) * | 2006-11-17 | 2008-05-22 | Denki Kagaku Kogyo Kabushiki Kaisha | Cement mortar composition for grout and grout mortar obtained from the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017008249A (en) * | 2015-06-24 | 2017-01-12 | 宇部興産株式会社 | Sol improver and soil improvement method |
| JP2017114743A (en) * | 2015-12-25 | 2017-06-29 | 太平洋マテリアル株式会社 | Rapid hardening fiber grout composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6133598B2 (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6258697B2 (en) | Fast-setting grout composition | |
| JP5962836B2 (en) | Rapid hardening additive for cement and method for producing the same | |
| JP6891041B2 (en) | Fast-strength ultra-high-strength grout composition | |
| JP7218083B2 (en) | Method for producing cement composition | |
| JP2012140294A (en) | Quick-hardening, highly flowable cement composition for low temperature | |
| KR101448837B1 (en) | Cement zero binder for concrete having high fluidity and nature-friendly concrete having high fluidity comprising the same | |
| JP6030438B2 (en) | Spraying material and spraying method using the same | |
| JP7037879B2 (en) | Early-strength admixture for secondary products and early-strength concrete for secondary products | |
| JP6133597B2 (en) | Quick-setting mortar composition | |
| JP4616112B2 (en) | Cement quick setting material and cement composition | |
| JP2011136863A (en) | Superhigh strength grout composition | |
| JP2015034116A (en) | Cement clinker, and cement composition | |
| JP6133598B2 (en) | Fast-hardening grout composition and fast-hardening grout material | |
| JP5160762B2 (en) | Cement mortar composition for grout | |
| JP5721212B2 (en) | Initial expansive cement composition | |
| JP4616111B2 (en) | Quick setting material for cement and quick hardening cement composition | |
| JP2008201605A (en) | Rapid-hardening material for highly flowable hydraulic composition and highly flowable hydraulic composition | |
| JP6258033B2 (en) | Method for producing fast-curing expanded cement kneaded material | |
| JP7058913B2 (en) | Fast-hardening cement composition and fast-hardening mortar | |
| JP7083637B2 (en) | Concrete and its manufacturing method | |
| JP2014129212A (en) | Quick-hardening additive and quick-hardening grout composition | |
| JP2016108237A (en) | Quick hardening additive material for cement and manufacturing method therefor | |
| JP6809761B2 (en) | Cement composition and its manufacturing method | |
| JP6956468B2 (en) | Fast-curing grout composition | |
| JPH11130500A (en) | Curing accelerating assistant material for spraying material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20151109 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20161026 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20161028 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20161226 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20170417 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20170420 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6133598 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |