JP2012062636A - Capsule for anchor element fixation and anchor element fixation method using the same - Google Patents
Capsule for anchor element fixation and anchor element fixation method using the same Download PDFInfo
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- JP2012062636A JP2012062636A JP2010205775A JP2010205775A JP2012062636A JP 2012062636 A JP2012062636 A JP 2012062636A JP 2010205775 A JP2010205775 A JP 2010205775A JP 2010205775 A JP2010205775 A JP 2010205775A JP 2012062636 A JP2012062636 A JP 2012062636A
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- 239000002775 capsule Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000004568 cement Substances 0.000 claims abstract description 46
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 29
- 239000004005 microsphere Substances 0.000 claims abstract description 27
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 26
- 239000011521 glass Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000010440 gypsum Substances 0.000 claims abstract description 18
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 18
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 13
- 239000000404 calcium aluminium silicate Substances 0.000 claims abstract description 9
- 235000012215 calcium aluminium silicate Nutrition 0.000 claims abstract description 9
- WNCYAPRTYDMSFP-UHFFFAOYSA-N calcium aluminosilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O WNCYAPRTYDMSFP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229940078583 calcium aluminosilicate Drugs 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- -1 setting retarder Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 2
- 230000015271 coagulation Effects 0.000 abstract 1
- 238000005345 coagulation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 32
- 238000011161 development Methods 0.000 description 14
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 10
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 7
- 235000012255 calcium oxide Nutrition 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 150000007524 organic acids Chemical class 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 5
- 150000008041 alkali metal carbonates Chemical class 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 235000005985 organic acids Nutrition 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 3
- 210000004556 brain Anatomy 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 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
- 239000004567 concrete Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 description 3
- 235000011181 potassium carbonates Nutrition 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 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
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 235000015497 potassium bicarbonate Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 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
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000006004 Quartz sand Substances 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
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000011429 hydraulic mortar Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000004570 mortar (masonry) 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
- 150000002823 nitrates Chemical class 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
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- 238000004017 vitrification Methods 0.000 description 1
- 239000008207 working material Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
本発明は、道路、鉄道等の土木・建築分野で施工されている、ロックボルト工法や法面のアンカー工法にアンカー素子として使用されるボルトのアンカー素子定着用カプセルおよびそれを用いたアンカー素子定着方法、特に、人力で作業できる作業性、冬季における短時間での急硬性、強度発現性、及び耐久性が得られるアンカー素子定着用カプセルおよびそれを用いたアンカー素子定着方法に関する。 The present invention relates to a bolt anchor element fixing capsule used as an anchor element in a rock bolt method or a slope anchor method, which is constructed in the civil engineering / architecture field such as roads and railways, and an anchor element fixing using the same More particularly, the present invention relates to an anchor element fixing capsule capable of obtaining workability that can be manually operated, quick hardening in a short time in winter, strength development, and durability, and an anchor element fixing method using the capsule.
日本は、山間部が多く、その中に道路、建物、及び設備等が建設されている。道路から外れた山間部等の工事では、運搬の便が悪いために掘削機械の搬入が容易でない場合や、作業機械を人がかついで現場まで長時間かけて搬入し、かつ、搬出しなければならない場合があり、作業機械を使用することなく人力で、簡便に設置できることが要請されている。特に、山中や斜面が急峻な場所で、網やロープをアンカー固定する作業等には簡便に設置できることが必要である。
また、寒冷地の冬季においては、気温が零下になり、積雪も多いので、落雪や人の作業性が悪くなり危険であった。
Japan has many mountainous areas, and roads, buildings, and facilities are built in it. In the construction of mountainous areas off the road, it is not easy to carry the excavating machine due to poor transportation, or the work machine must be carried by the person over time to the site and unloaded. Therefore, there is a demand for easy installation without using a work machine. In particular, it is necessary to be able to be easily installed in a mountain or a place where the slope is steep, for work such as anchoring a net or rope.
In winter in cold regions, the temperature was below zero and there was a lot of snow, which was dangerous due to falling snow and poor human workability.
一般に、建築、土木分野のコンクリート、石材、レンガ、ブロック、及び岩盤等の硬質部材を削孔し、鉄筋、アンカーボルト、及びロックボルトを固定する定着材が使用されている。
本発明では、所要定着力が得られるようなロックボルト工法やアンカーボルト工法用のボルトをアンカー素子といい、アンカー素子用の定着材をアンカー素子定着材といい、アンカー素子定着材を利用したロックボルト工法やアンカー工法をアンカー素子定着工法という。
定着材としては、金属系アンカー素子のように、アンカー素子埋設時にその先端部分が拡張し固定するものと、アンカー素子の周りを接着系の材料で固定するものに分かれる。
接着系の材料を使用する場合、昜破壊性の容器に、セメント質物質と、カルシウムアルミネートと、アルカリ硝酸塩類とを主成分とするセメント組成物を昜破壊性の容器に収納してなる素子の定着材が公知である（特許文献１参照）。
また、アルカリ金属炭酸塩、アルミン酸塩、水酸化カルシウム、カルシウムアルミネート、保水性物質、オキシカルボン酸塩類、及び細骨材を昜破壊性のカプセルに封入したアンカー素子定着材が公知である（特許文献２参照）。
さらに、セメント、アルミノケイ酸カルシウムガラス、石膏、骨材、ミクロフィブリル化した繊維状セルロース、水、及び凝結遅延剤を、易破壊性の容器に含有する素子定着用カプセルが公知である（特許文献３参照）。
Generally, fixing materials are used for drilling hard members such as concrete, stone, bricks, blocks, and bedrock in the construction and civil engineering fields, and fixing reinforcing bars, anchor bolts, and lock bolts.
In the present invention, a bolt for a lock bolt method or an anchor bolt method capable of obtaining a required fixing force is called an anchor element, a fixing material for the anchor element is called an anchor element fixing material, and a lock using the anchor element fixing material is used. The bolt method and the anchor method are called anchor element fixing methods.
The fixing material is classified into a fixing material that expands and fixes its tip when the anchor element is embedded, and a fixing material that fixes the periphery of the anchor element with an adhesive material.
When adhesive materials are used, an element in which a cement composition mainly composed of a cementitious substance, calcium aluminate, and alkali nitrates is housed in a flaw-breaking container. This fixing material is known (see Patent Document 1).
Also known is an anchor element fixing material in which an alkali metal carbonate, aluminate, calcium hydroxide, calcium aluminate, water retention material, oxycarboxylate, and fine aggregate are encapsulated in a wrinkle-breakable capsule ( Patent Document 2).
Furthermore, a capsule for fixing an element containing cement, calcium aluminosilicate glass, gypsum, aggregate, microfibrillated fibrous cellulose, water, and a setting retarder in an easily destructible container is known (Patent Document 3). reference).
しかし、これら、従来のカプセル型のボルト定着材の場合、急硬性ボルト定着材はあるものの、人力で作業できる作業性、急硬性、及び冬季における耐久性の三つの条件を満足できるものは無かった。
そのため、気温が零下になる冬季の寒冷地において、早期にアンカー素子を固定し、耐久性があり、作業性が良好な急硬性のアンカー素子定着材が求められていた。
However, in the case of these conventional capsule-type bolt fixing materials, although there are rapid-hardening bolt fixing materials, none of them satisfies the three conditions of workability, rapid hardness, and durability in winter. .
Therefore, there has been a demand for a fast-curing anchor element fixing material that has an anchor element fixed early, has durability, and has good workability in a cold region in winter when the temperature falls below zero.
一方、屋外環境で供用された場合でも卓越した耐久性や耐候性を有する、中空微小球を含有する水硬性スラリー又は水硬性モルタルの硬化体が公知である（特許文献４参照）。 しかしながら、特許文献４には、アルミノケイ酸カルシウムガラスと石膏からなる急硬成分を併用してアンカー素子を定着することについては全く記載がない。 On the other hand, a hydraulic slurry or a hardened body of a hydraulic mortar containing hollow microspheres having excellent durability and weather resistance even when used in an outdoor environment is known (see Patent Document 4). However, in Patent Document 4, there is no description about fixing an anchor element using a rapid hardening component made of calcium aluminosilicate glass and gypsum.
本発明は、上述のような問題点を解決しようとするものであり、セメント、アルミノケイ酸カルシウムガラス、石膏、凝結遅延剤、表面に炭酸カルシウムを被覆させた樹脂中空微小球、及び減水剤を含有してなる急硬性セメント組成物を封入してなる易破壊性で吸水性のアンカー素子定着用カプセルを、また、そのアンカー素子定着用カプセルを使用することによって、寒冷地でも耐久性が優れるセメント硬化体が得られるアンカー素子定着方法を提供することを課題とする。 The present invention is intended to solve the above-mentioned problems, and includes cement, calcium aluminosilicate glass, gypsum, a setting retarder, resin hollow microspheres coated with calcium carbonate on the surface, and a water reducing agent. Cement which has excellent durability even in cold regions by using a capsule for anchoring anchor elements that are easily destructible and water-absorbing, and encapsulating the rapid-hardening cement composition. It is an object of the present invention to provide an anchor element fixing method for obtaining a body.
本発明は、上記の課題を解決するために、以下の手段を採用する。
（１）セメント、アルミノケイ酸カルシウムガラス、石膏、凝結遅延剤、表面に炭酸カルシウムを被覆させた樹脂中空微小球、及び減水剤を含有してなる急硬性セメント組成物を封入してなる易破壊性で吸水性のアンカー素子定着用カプセルである。
（２）前記（１）に記載のアンカー素子定着用カプセルを２〜７分間、水に浸漬後、穿孔内に充填し、破壊し、アンカー素子定着用カプセル内の急硬性セメント組成物を混合することを特徴とするアンカー素子定着方法である。
The present invention employs the following means in order to solve the above problems.
(1) Easily destructible by encapsulating cement, calcium aluminosilicate glass, gypsum, setting retarder, resin hollow microspheres coated with calcium carbonate on the surface, and a quick-hardening cement composition containing a water reducing agent. It is a water-absorbing anchor element fixing capsule.
(2) After immersing the anchor element fixing capsule described in (1) in water for 2 to 7 minutes, filling in the perforations, destroying, and mixing the quick-hardening cement composition in the anchor element fixing capsule This is an anchor element fixing method.
本発明は、寒冷地において、急硬性と耐久性と人力による作業性が優れるといった効果が得られる。 The present invention has the effect of being excellent in quick-hardness, durability, and workability by human power in cold regions.
以下、本発明を詳しく説明する。
なお、本発明における部や％は、特に断わらない限り質量基準である。
The present invention will be described in detail below.
In the present invention, “parts” and “%” are based on mass unless otherwise specified.
本発明は、セメント、アルミノケイ酸カルシウムガラス、石膏、凝結遅延剤、表面に炭酸カルシウムを付着させた樹脂中空微小球、及び減水剤含を有してなる急硬性セメント組成物を封入してなる易破壊性で吸水性のアンカー素子定着用カプセルおよびそれを用いたアンカー素子定着方法である。 The present invention easily encapsulates cement, calcium aluminosilicate glass, gypsum, a setting retarder, resin hollow microspheres having calcium carbonate adhered to the surface, and a rapid hardening cement composition containing a water reducing agent. A destructible and water-absorbing anchor element fixing capsule and an anchor element fixing method using the capsule.
本発明で使用するセメントは、通常市販されている普通、早強、中庸熱、低熱、及び超早強等の各種ポルトランドセメント、これらのポルトランドセメントに、フライアッシュや高炉スラグなどを混合した各種混合セメント、並びに、エコセメントなどが挙げられ、これらを微粉末化して使用することも可能である。
セメントの粒度は、ブレーン比表面積値（以下、ブレーン値という）で3,000cm2/g以上が好ましく、4,000cm2/g以上がより好ましい。3,000cm2/g未満では急硬性や初期強度発現性が低下する場合がある。
The cement used in the present invention is usually commercially available, such as normal, early strong, moderately hot, low heat, and very early strong Portland cement, and various blends of these Portland cements mixed with fly ash, blast furnace slag, etc. Cement, eco-cement and the like can be mentioned, and these can be used after being finely powdered.
The particle size of the cement, Blaine specific surface area value (hereinafter, referred to as Blaine value) is preferably 3,000 cm 2 / g or more, 4,000 cm 2 / g or more is more preferable. If it is less than 3,000 cm 2 / g, rapid hardening and initial strength development may be reduced.
本発明で使用するアルミノケイ酸カルシウムガラス（以下、ＣＡＳガラスという）は、カルシア(CaO)を含む原料と、アルミナ(Al2O3)を含む原料、及びケイ酸(SiO2)を含む原料等を混合して、キルンでの焼成や、電気炉での溶融等の熱処理をして得られるもので、CaO、Al2O3、及びSiO2を主たる成分とし、水和活性を有する物質の総称である。
ＣＡＳガラスは、例えば、熱処理をして得られた溶融体を圧縮空気や高圧水等により急冷することによって得られるガラス質である。
ＣＡＳガラス中のCaO、Al2O3、及びSiO2の割合は特に限定されるものではないが、CaO 30〜60部、Al2O3 20〜60部、及びSiO2１〜25部が好ましく、CaO 30〜55部、Al2O3 30〜60部、及びSiO2５〜20部がより好ましい。CaOが30部未満、あるいは、Al2O3が60部を超えると急硬性が劣る場合があり、CaOが60部を超えるか、あるいは、Al2O3が20部未満では凝結遅延剤を多量に併用しても瞬結する場合がある。また、SiO2が１部未満では長期的な強度の伸びが期待できない場合があり、25部を超えると初期強度が小さい場合がある。
また、ＣＡＳガラス中のガラス質は80％以上が、強度発現性が良好であることから好ましい。
ＣＡＳガラスの粒度は、ブレーン値で3,000cm2/g以上が好ましく、4,000〜7,000cm2/gがより好ましい。3,000cm2/g未満では急硬性や初期強度発現性が低下する場合がある。
The calcium aluminosilicate glass (hereinafter referred to as CAS glass) used in the present invention includes a raw material containing calcia (CaO), a raw material containing alumina (Al 2 O 3 ), and a raw material containing silicic acid (SiO 2 ). This is a general term for substances that have hydration activity, with CaO, Al 2 O 3 , and SiO 2 as the main components. is there.
CAS glass is, for example, a glassy material obtained by quenching a melt obtained by heat treatment with compressed air or high-pressure water.
The proportion of CaO, Al 2 O 3 and SiO 2 in the CAS glass is not particularly limited, but is preferably 30 to 60 parts of CaO, 20 to 60 parts of Al 2 O 3 and 1 to 25 parts of SiO 2. More preferred are CaO 30-55 parts, Al 2 O 3 30-60 parts, and SiO 2 5-20 parts. If CaO is less than 30 parts or Al 2 O 3 exceeds 60 parts, the rapid hardening may be inferior. If CaO exceeds 60 parts or Al 2 O 3 is less than 20 parts, a large amount of setting retarder may be used. Even if used together, there may be a momentary connection. Further, if SiO 2 is less than 1 part, long-term strength elongation may not be expected, and if it exceeds 25 parts, the initial strength may be small.
Moreover, 80% or more of the vitreous in the CAS glass is preferable because strength development is good.
The particle size of the CAS glass is preferably 3,000 cm 2 / g or more in Blaine value, 4,000~7,000cm 2 / g is more preferable. If it is less than 3,000 cm 2 / g, rapid hardening and initial strength development may be reduced.
本発明で使用する石膏は、ＣＡＳガラス、水、セメントの水和物である水酸化カルシウムと反応し初期強度を得るもので、市販のいずれの石膏も使用できるが、強度発現性の面で、II型無水石膏及び／又は天然無水石膏の使用が好ましい。
石膏の粒度は、ブレーン値で3,000cm2/g以上が好ましく、4,000〜7,000cm2/gがより好ましい。3,000cm2/g未満では初期強度発現性が低下する場合がある。
石膏の使用量は、ＣＡＳガラスと石膏からなる急硬成分100部中、30〜70部が好ましく、30〜60部がより好ましい。30部未満では長期強度発現性が低下する場合があり、70部を超えると初期強度発現性が低下する場合がある。
The gypsum used in the present invention reacts with calcium hydroxide, which is a hydrate of CAS glass, water, and cement to obtain initial strength, and any commercially available gypsum can be used, but in terms of strength development, The use of type II anhydrous gypsum and / or natural anhydrous gypsum is preferred.
The particle size of the gypsum is preferably 3,000 cm 2 / g or more in Blaine value, 4,000~7,000cm 2 / g is more preferable. If it is less than 3,000 cm 2 / g, the initial strength development may decrease.
The amount of gypsum used is preferably 30 to 70 parts, more preferably 30 to 60 parts, in 100 parts of the rapid hardening component made of CAS glass and gypsum. If it is less than 30 parts, long-term strength development may be reduced, and if it exceeds 70 parts, initial strength development may be reduced.
本発明において、急硬成分は、ＣＡＳガラスと石膏を含有する。
急硬成分の使用量は、セメントと急硬成分からなる急硬セメント100部中、10〜30部が好ましく、15〜25部がより好ましい。10部未満では寒冷地での初期強度発現性が小さい場合があり、30部を超えると長期強度が小さい場合がある。
In the present invention, the rapid hardening component contains CAS glass and gypsum.
The amount of the rapid-hardening component used is preferably 10 to 30 parts, more preferably 15 to 25 parts, in 100 parts of the rapid-hardening cement composed of cement and the rapid-hardening component. If it is less than 10 parts, the initial strength development in cold regions may be small, and if it exceeds 30 parts, the long-term strength may be small.
本発明で使用する凝結遅延剤は、施工時の作業性保持を可能とするものである。粉状で使用する場合と、アンカー素子定着用カプセル浸漬水に溶解させ使用する場合がある。
凝結遅延剤としては、有機酸類やアルカリ金属炭酸塩類等が挙げられる。これらの中では、硬化時間をコントロールでき、硬化後の強度発現性が良好な点で、有機酸類とアルカリ金属炭酸塩類を併用することが好ましい。
The setting retarder used in the present invention makes it possible to maintain workability during construction. There are cases where it is used in the form of a powder, and cases where it is used by being dissolved in anchor-fixing capsule immersion water.
Examples of the setting retarder include organic acids and alkali metal carbonates. In these, it is preferable to use together organic acids and alkali metal carbonates at the point which can control hardening time and the intensity | strength expression property after hardening is favorable.
有機酸類とは、有機酸又はその塩であり、具体的には、クエン酸、グルコン酸、酒石酸、及びリンゴ酸等のオキシカルボン酸又はこれらの塩の一種又は二種以上であり、その塩としては、ナトリウム塩やカリウム塩が好ましい。これらの中では、使用量と比例して凝結時間が長くなり、施工時の作業時間のコントロールがしやすく、凝結遅延剤をスラリー化した場合に、カルシウム成分と化学反応を起こしにくい有機酸塩が好ましく、オキシカルボン酸塩がより好ましい。 Organic acids are organic acids or salts thereof, specifically, oxycarboxylic acids such as citric acid, gluconic acid, tartaric acid, and malic acid, or one or two or more of these salts. Is preferably a sodium salt or a potassium salt. Among these, the setting time is increased in proportion to the amount of use, and it is easy to control the working time during construction, and when the setting retarder is slurried, there is an organic acid salt that hardly reacts with the calcium component. Preferably, an oxycarboxylate is more preferable.
アルカリ金属炭酸塩類（以下、炭酸アルカリという）としては、炭酸リチウム、炭酸ナトリウム、及び炭酸カリウムなどの炭酸塩や、炭酸水素ナトリウムや炭酸水素カリウムなどの重炭酸塩が挙げられ、これらのうち、硬化後の強度発現性が良好な面で、アルカリ金属炭酸塩が好ましく、炭酸カリウムがより好ましい。 Examples of alkali metal carbonates (hereinafter referred to as alkali carbonates) include carbonates such as lithium carbonate, sodium carbonate, and potassium carbonate, and bicarbonates such as sodium hydrogen carbonate and potassium hydrogen carbonate. In terms of good strength development later, alkali metal carbonates are preferable, and potassium carbonate is more preferable.
有機酸類と炭酸アルカリを併用する場合の有機酸類の使用量は、炭酸アルカリ100部に対して、５〜200部が好ましく、10〜100部がより好ましい。５部未満では硬化時間をコントロールしにくく、施工がしにくい場合があり、200部を超えると強度発現性が低下する場合がある。 When the organic acid and the alkali carbonate are used in combination, the amount of the organic acid used is preferably 5 to 200 parts, more preferably 10 to 100 parts, relative to 100 parts of the alkali carbonate. If it is less than 5 parts, it may be difficult to control the curing time and the construction may be difficult. If it exceeds 200 parts, strength development may be reduced.
凝結遅延剤の使用量は、施工の作業時間、温度、及び凝結遅延剤の組成等により幅があるため、一義的に決定することは難しいが、本発明では、急硬セメント100部に対して、0.1〜５部が好ましく、0.3〜３部がより好ましい。0.1部未満では硬化時間が短くて施工しにくい場合があり、５部を超えると強度発現性が低下する場合がある。 The amount of the setting retarder used varies depending on the construction work time, temperature, composition of the setting retarder, etc., so it is difficult to determine uniquely. 0.1 to 5 parts is preferable, and 0.3 to 3 parts is more preferable. If it is less than 0.1 part, the curing time may be short and difficult to construct, and if it exceeds 5 part, strength development may be reduced.
本発明では、寒冷地において、耐凍結融解性等の耐久性が優れるセメント硬化体を得るなどのために、炭酸カルシウムを被覆した中空微小球（以下、本中空微小球という）を使用する。 In the present invention, hollow microspheres coated with calcium carbonate (hereinafter referred to as the present hollow microspheres) are used in order to obtain a hardened cement body having excellent durability such as freeze-thaw resistance in a cold region.
本中空微小球の材質は、アクリロニトリル、フェノール、ポリメチルメタクリレート、ポリスチレン、塩化ビニリデン、及びポリフェノールなどがあり、共重合物や架橋体であっても特に限定されるものではなく、高分子球形弾性体からできており、その径は300μｍ以下が好ましく、100μｍ以下がより好ましい。径が300μｍを超えると使用量が同じでも凍結融解の耐久性劣る場合がある。
本中空微小球の含水率は、0.5〜10％が好ましく、0.5〜５％がより好ましい。0.5％未満では飛散しやすく、10％を超えると急硬性セメント組成物に混合した場合、急硬性セメント組成物が硬化し、使用できない場合や、中空微小球が分散せず、アンカー素子が容易に挿入ができない場合がある。
本中空微小球の密度は、0.10〜0.30g/cm3が好ましく、0.10〜0.25g/cm3がより好ましい。0.10g/cm3未満では急硬性セメント組成物に混合した場合、飛散や均等に分散しない場合や、輸送中に分離する場合がある。0.30g/cm3を超えると、アンカー素子が容易に挿入ができない場合や凍結融解の耐久性が得られない場合がある。
本発明で使用する本中空微小球は、適度の密度と、急硬セメントとの付着性を得るため、高分子球形弾性体である中空微小球の表面に、炭酸カルシウムを被覆したものである。
本発明で使用する本中空微小球は、例えば、中空微小球の材質中に液状炭化水素を含有したものを、微粉炭酸カルシウムとともに170℃程度まで加熱し、所定のサイズになるまで、均一に温度が伝わるようにして製造することができる。
本中空微小球の樹脂と炭酸カルシウムの質量比率は、本中空微小球の樹脂100部に対して、炭酸カルシウム100〜500部が好ましく、200〜500部がより好ましい。100部未満では飛散しやすく、均一分散されず、偏析傾向になり、耐久性が劣る場合があり、500部を超えると、耐久性が得られない場合がある。
中空微小球の使用量は、気象条件、中空微小球の密度、配合（モルタル、コンクリート）により異なる。本中空微小球の使用量は、セメントと急硬成分からなる急硬セメント100部に対して、0.02〜２部が好ましく、0.1〜２部がより好ましい。0.02部未満ではアンカー素子が容易に挿入ができないなどの作業性が得られない場合や耐久性が得られない場合があり、２部を超えると強度の低下が大きくなり、引き抜き強度が得られない場合がある。
The material of the hollow microsphere includes acrylonitrile, phenol, polymethyl methacrylate, polystyrene, vinylidene chloride, and polyphenol, and is not particularly limited even if it is a copolymer or a crosslinked product. The diameter is preferably 300 μm or less, and more preferably 100 μm or less. If the diameter exceeds 300 μm, freeze-thaw durability may be inferior even if the amount used is the same.
The water content of the present hollow microsphere is preferably 0.5 to 10%, more preferably 0.5 to 5%. If it is less than 0.5%, it is easy to scatter, and if it exceeds 10%, if it is mixed with a rapid-hardening cement composition, the rapid-hardening cement composition will harden and cannot be used. Insertion may not be possible.
The density of the hollow microspheres is preferably from 0.10~0.30g / cm 3, 0.10~0.25g / cm 3 is more preferable. If it is less than 0.10 g / cm 3 , it may be scattered or not evenly dispersed when mixed with a rapid-hardening cement composition, or may be separated during transportation. If it exceeds 0.30 g / cm 3 , the anchor element may not be easily inserted or freeze-thaw durability may not be obtained.
The hollow microspheres used in the present invention are obtained by coating the surface of hollow microspheres, which are polymer spherical elastic bodies, with calcium carbonate in order to obtain an appropriate density and adhesion to a rapid cement.
The present hollow microspheres used in the present invention, for example, those containing liquid hydrocarbons in the material of the hollow microspheres are heated to about 170 ° C. together with fine powdered calcium carbonate, and uniformly heated to a predetermined size. Can be produced in such a way that it is transmitted.
The mass ratio of the resin of the present hollow microsphere and calcium carbonate is preferably 100 to 500 parts of calcium carbonate, more preferably 200 to 500 parts with respect to 100 parts of the resin of the present hollow microsphere. If it is less than 100 parts, it tends to scatter, it is not uniformly dispersed, tends to segregate, and durability may be inferior. If it exceeds 500 parts, durability may not be obtained.
The amount of hollow microspheres used varies depending on weather conditions, the density of the hollow microspheres, and the composition (mortar, concrete). The amount of the hollow microspheres used is preferably 0.02 to 2 parts, more preferably 0.1 to 2 parts, with respect to 100 parts of the hardened cement composed of cement and a quick hardening component. If it is less than 0.02 part, workability such as the anchor element cannot be easily inserted may not be obtained or durability may not be obtained. If it exceeds 2 parts, the decrease in strength becomes large and pulling strength cannot be obtained. There is a case.
本発明では骨材を使用することが可能である。通常は５mm以下の細骨材が使用される。
骨材としては、天然砂、珪砂、及び石灰砂等が挙げられる。
骨材の使用量は、急硬セメント100部に対して、400部以下が好ましく、300部以下がより好ましい。400部を超えると施工がしにくく、所定の性能が得られない場合がある。
In the present invention, aggregate can be used. Usually, fine aggregates of 5 mm or less are used.
Examples of the aggregate include natural sand, quartz sand, and lime sand.
The amount of aggregate used is preferably 400 parts or less and more preferably 300 parts or less with respect to 100 parts of the quick-hardening cement. If it exceeds 400 parts, the work is difficult to perform and the prescribed performance may not be obtained.
本発明では、さらに、減水剤を使用する。
減水剤とは作業性の改善を得るものであり、液体や粉体いずれも使用でき、具体的には、リグニンスルホン酸塩やその誘導体、高性能減水剤等が挙げられ、これらのうちの一種又は二種以上が使用可能である。吸水が小さい場合は、作業性の改善が大きい減水剤の使用が好ましい。また、アンカー素子定着材中に混和できる粉体の減水剤が、施工する作業が簡便になる面から好ましい。
In the present invention, a water reducing agent is further used.
Water reducing agents are those that improve workability and can be used in either liquid or powder form. Specific examples include lignin sulfonates and their derivatives, and high performance water reducing agents. Or 2 or more types can be used. When water absorption is small, it is preferable to use a water reducing agent that greatly improves workability. Further, a powder water reducing agent that can be mixed in the anchor element fixing material is preferable from the viewpoint of simplifying the construction work.
高性能減水剤としては、ポリエチレングリコールなどのポリオール誘導体、リグニンスルホン酸系高性能減水剤、芳香族スルホン酸系高性能減水剤、ポリカルボン酸系高性能減水剤、エチレングリコール鎖やスルホン酸基を含有するポリエーテル系高性能減水剤、メラミン系高性能減水剤、及びこれらの混合物等が挙げられ、これらの中では、凝結遅延効果や流動性が大きい点で、リグニンスルホン酸系高性能減水剤、ポリカルボン酸系高性能減水剤が好ましい。 High-performance water reducing agents include polyol derivatives such as polyethylene glycol, lignin sulfonic acid-based high-performance water reducing agents, aromatic sulfonic acid-based high-performance water reducing agents, polycarboxylic acid-based high-performance water reducing agents, ethylene glycol chains and sulfonic acid groups. Examples include polyether-based high-performance water reducing agents, melamine-based high-performance water reducing agents, and mixtures thereof. Among these, lignin sulfonic acid-based high-performance water reducing agents are advantageous in that they have a high setting retarding effect and fluidity. Polycarboxylic acid-based high-performance water reducing agents are preferred.
減水剤の使用量は、急硬セメント100部に対して、固形分換算で0.05〜３部が好ましく、0.1〜2.5部がより好ましい。0.05部未満では所定の作業性が得られない場合があり、３部を超えると凝結が不良となり、初期強度発現性が小さい場合がある。 The amount of water reducing agent used is preferably 0.05 to 3 parts, more preferably 0.1 to 2.5 parts in terms of solid content, with respect to 100 parts of the quick-hardening cement. If it is less than 0.05 part, the predetermined workability may not be obtained, and if it exceeds 3 parts, the setting may be poor and the initial strength development may be small.
本発明では、セメント、アルミノケイ酸カルシウムガラス、石膏、凝結遅延剤、表面に炭酸カルシウムを付着させた樹脂中空微小球、及び減水剤含を有してなる急硬性セメント組成物をアンカー素子定着用カプセルに封入する。 In the present invention, an anchor element fixing capsule comprising cement, calcium aluminosilicate glass, gypsum, a setting retarder, resin hollow microspheres having calcium carbonate attached to the surface, and a water reducing agent is contained. Enclose in.
本発明のアンカー素子定着用カプセルは、易破壊性で、吸水性のものであり、材質としては、ガラス、陶器、磁器、プラスチック、不織布、及び紙等が挙げられ、紙又は不織布が好ましい。
アンカー素子定着用カプセルの大きさとしては、特に限定されるものではないが、通常、長さ800mm以下、外径40mm以下が好ましい。長さが800mmを超え、外経が40mmを超えたものでは、アンカー素子定着用カプセルに充分な量の水を吸収させるのに時間がかかり、取り扱い時の、作業性が低下する場合がある。
The anchor element fixing capsule of the present invention is easily destructible and absorbs water, and examples of the material include glass, ceramics, porcelain, plastic, non-woven fabric, and paper, and paper or non-woven fabric is preferable.
The size of the anchor element fixing capsule is not particularly limited, but usually it is preferably 800 mm or less in length and 40 mm or less in outer diameter. When the length exceeds 800 mm and the outer diameter exceeds 40 mm, it takes time for the anchor element fixing capsule to absorb a sufficient amount of water, and the workability during handling may be reduced.
本発明のアンカー素子定着用カプセルは、水に浸漬した後、アンカー素子用の定着材を定着するために窃孔形成した空洞部に挿入してアンカー素子挿入してアンカー素子定着用カプセルを破壊して、アンカー素子を定着する方法や、窃孔形成した空洞部にアンカー素子定着用カプセルを挿入し、水を吸収させて、アンカー素子挿入してアンカー素子定着用カプセルを破壊して、アンカー素子を定着する方法が可能である。 The anchor element fixing capsule of the present invention is immersed in water, and then inserted into a hollow portion formed with a hole to fix the anchor element fixing material, and the anchor element is inserted to destroy the anchor element fixing capsule. The anchor element is fixed, or the anchor element fixing capsule is inserted into the hollow portion where the hole has been formed, the water is absorbed, the anchor element is inserted, and the anchor element fixing capsule is destroyed. A fixing method is possible.
アンカー素子定着用カプセルに水を充分に吸収させるための時間は、２〜７分が好ましく、３〜５分がより好ましい。２分未満ではアンカー素子定着用カプセルの吸水が不充分となり、作業性が悪く、所定の定着力が得られない場合がある。また、７分を超えても、吸水は飽和状態となり、凝結遅延剤が混合されず、作業性が悪くなし、所定の定着力が得られない場合がある。 The time for sufficiently absorbing water in the anchor element fixing capsule is preferably 2 to 7 minutes, and more preferably 3 to 5 minutes. If the time is less than 2 minutes, the anchor element fixing capsule may not have sufficient water absorption, resulting in poor workability and a predetermined fixing force. Further, even if it exceeds 7 minutes, the water absorption is saturated, the setting retarder is not mixed, workability is deteriorated, and a predetermined fixing force may not be obtained.
以下、本発明を実験例にて詳細に説明するが、本発明はこれら実験例に限られるものではない。 Hereinafter, the present invention will be described in detail with experimental examples, but the present invention is not limited to these experimental examples.
実験例１
本発明のアンカー素子定着用カプセルに、使用する各材料の配合割合を決定するための予備試験を行った。
表１に示すセメント、ＣＡＳガラス、及び石膏から調製した急硬セメント100部に対して、本中空微小球0.7部、凝結遅延剤0.5部、減水剤を固形分換算で0.25部、及び水40部を配合し、アンカー素子定着材を調製し、JIS R 5201 セメントの物理試験方法に準拠して、低速で20秒間練り混ぜて供試体を作製し、硬化時間、３時間（３Ｈ）と28日の圧縮強度を測定した。結果を表１に併記する。
使用材料温度、練り混ぜ時の室温、及び３時間養生温度は、５℃とし、３時間養生以降の養生は、０℃で行なった。
Experimental example 1
The anchor element fixing capsule of the present invention was subjected to a preliminary test for determining the blending ratio of each material to be used.
For 100 parts of rapid-hardening cement prepared from cement, CAS glass and gypsum shown in Table 1, 0.7 parts of the present hollow microspheres, 0.5 parts of setting retarder, 0.25 parts of water reducing agent in terms of solid content, and 40 parts of water To prepare an anchor element fixing material, and in accordance with the physical test method of JIS R 5201 cement, knead for 20 seconds at low speed to prepare a specimen, and set time, 3 hours (3H) and 28 days The compressive strength was measured. The results are also shown in Table 1.
The temperature of the material used, the room temperature at the time of mixing, and the curing temperature for 3 hours were 5 ° C., and curing after 3 hours curing was performed at 0 ° C.
＜使用材料＞
セメント ：早強ポルトランドセメント、太平洋セメント社製、住友大阪セメント社製、及び電気化学工業社製の３種混合品、ブレーン値4,470cm2/g、密度3.12g/cm3
ＣＡＳガラス：CaO／Al2O3／SiO2質量比＝50／45／5、ガラス化率100％、ブレーン値4,650m2/g
石膏 ：天然無水セッコウの粉砕品、ブレーン値4,780cm2/g
中空微小球ａ：塩化ビニリデンアクリロニトリル共重合物製、炭酸カルシウム被覆品（中空微小球表面に、樹脂100部に対して、炭酸カルシウム300部を被覆したもの）、含水率１％、粒径38μｍ、密度0.16g/cm3
凝結遅延剤：グルコン酸ナトリム/炭酸カリウムの質量比２／８の混合物
減水剤α ：リグニンスルホン酸塩系高性能減水剤、市販品、粉体
水 ：水道水
<Materials used>
Cement: Hayako Portland Cement, Taiheiyo Cement Co., Sumitomo Osaka Cement Co., Ltd., and Electrochemical Industry Co., Ltd., 3 types of mixed products, Brain value 4,470cm 2 / g, Density 3.12g / cm 3
CAS glass: CaO / Al 2 O 3 / SiO 2 mass ratio = 50/45/5, vitrification rate 100%, brain value 4,650 m 2 / g
Gypsum: natural anhydrous gypsum ground product, brain value 4,780cm 2 / g
Hollow microspheres a: made of vinylidene chloride acrylonitrile copolymer, coated with calcium carbonate (the surface of hollow microspheres coated with 300 parts of calcium carbonate with respect to 100 parts of resin), water content 1%, particle size 38 μm, Density 0.16g / cm 3
Setting retarder: sodium gluconate / potassium carbonate 2/8 mixture water reducing agent α: lignin sulfonate high-performance water reducing agent, commercial product, powder water: tap water
＜測定方法＞
含水率 ：試料５ｇを1/1000ｇまで測定可能な秤を使用し質量測定。50℃、６時間乾燥し、その後デシケータ中で室温まで冷却し、重量測定。
硬化時間 ：測定温度が１℃上昇したときの、混合からの時間（分）
圧縮強度 ：JIS R 5201セメントの物理試験方法に準じて測定、材齢３時間と28日
<Measurement method>
Water content: Mass measurement using a scale capable of measuring up to 1/1000 g of a sample 5 g. Dry at 50 ° C. for 6 hours, then cool to room temperature in a desiccator and weigh.
Curing time: Time from mixing (minutes) when the measured temperature rises 1 ° C
Compressive strength: Measured according to the physical test method of JIS R 5201 cement, age 3 hours and 28 days
実験例２
セメント75％、ＣＡＳガラス12.5％、及び石膏12.5％からなる急硬セメント100部と、表２に示す本中空微小球と減水剤、凝結遅延剤0.5部、及び水40部を混和したアンカー素子定着材を調製し、硬化時間、３時間（３Ｈ）と28日の圧縮強度を測定した。
一方、水を除く急硬性セメント組成物を、幅58mm(外径37mm)、長さ700mmの不織布袋に740ｇ充填し、充填口を、急硬性セメント組成物が漏れないように、ホッチキス止めしアンカー素子定着用カプセルとした。このアンカー素子定着用カプセルを１℃の水に５分間吸水させ塩ビパイプに挿入し、作業性試験を行った。作業性試験24時間前にアンカー素子定着用カプセルを、ポリ袋に密封し、５℃で保管した。
なお、使用材料温度、練り混ぜ時の室温は、５℃とし、作業性を確認した。結果を表２に併記する。
Experimental example 2
Anchor element anchoring 100 parts of hard cement consisting of 75% cement, 12.5% CAS glass, and 12.5% gypsum, the hollow microspheres shown in Table 2, water reducing agent, 0.5 part of setting retarder, and 40 parts of water. Materials were prepared and measured for cure time, 3 hours (3H) and 28 days compressive strength.
On the other hand, 740g of a quick-hardening cement composition excluding water is filled into a non-woven bag with a width of 58mm (outer diameter 37mm) and a length of 700mm, and the filling port is stapled and anchored to prevent the quick-hardening cement composition from leaking. It was set as the capsule for element fixation. The anchor element fixing capsule was absorbed in water at 1 ° C. for 5 minutes and inserted into a PVC pipe, and a workability test was performed. The anchor element fixing capsule was sealed in a plastic bag and stored at 5 ° C. 24 hours before the workability test.
In addition, working material temperature and room temperature at the time of kneading were 5 degreeC, and workability | operativity was confirmed. The results are also shown in Table 2.
＜使用材料＞
中空微小球ｂ：塩化ビニリデンアクリロニトリル共重合物製、含水率１％、粒径38μｍ、密度0.04g/cm3、表面無処理品
減水剤β ：ポリカルボン酸塩系高性能減水剤、市販品、粉体
減水剤γ ：ナフタレンスルホン酸塩系高性能減水剤、市販品、粉体
<Materials used>
Hollow microsphere b: made of vinylidene chloride acrylonitrile copolymer, water content 1%, particle size 38 μm, density 0.04 g / cm 3 , surface untreated water reducing agent β: polycarboxylate-based high-performance water reducing agent, commercially available product, Powder water reducing agent γ: Naphthalenesulfonate-based high-performance water reducing agent, commercial product, powder
＜測定方法＞
作業性 ：アンカー素子定着用カプセルを、１℃の水に５分間吸水させ、垂直に固定したΦ44mm×長さ700mmの塩ビパイプに挿入し、長さ１ｍの、挿入端を45°にカットした呼び名Ｄ22異形鉄を人力で挿入し、上下させてアンカー素子定着用カプセルを破壊し、アンカー素子定着材を混合し、作業性を測定した。作業性の評価は、鉄筋の挿入が軽く、挿入回数が５回以下で安定し、楽な施工である場合を「良」、鉄筋の挿入回数が５〜14回で安定し、若干労力を必要とする場合を「可」、鉄筋はなんとか挿入できるが、重く、挿入回数が15回以上と多く、労力を必要とする場合を「不良」、鉄筋を底まで挿入できない場合を「不可」とした。
<Measurement method>
Workability: The anchor element fixing capsule was absorbed in 1 ° C water for 5 minutes, inserted into a vertically fixed Φ44mm × 700mm length PVC pipe, and the 1m long insertion end was cut to 45 °. D22 deformed iron was manually inserted and moved up and down to break the anchor element fixing capsule, the anchor element fixing material was mixed, and workability was measured. Evaluation of workability is easy when the rebar insertion is light and stable when the number of insertions is 5 or less, and the construction is easy, and the number of insertions of the rebar is stable between 5 and 14 times and requires a little effort. `` Yes '', the rebar can be managed somehow, but it is heavy, the number of insertions is more than 15 times, and if it requires labor, it is `` bad '', and the case where the rebar cannot be inserted to the bottom is `` impossible '' .
実験例３
実験例２で作業性を確認した後、塩ビパイプ中のアンカー素子定着材を、塩ビパイプから取り出し、不織布を除いて混合し、4×4×16cmの供試体を作製した。接水から３時間後に凍結融解試験を開始した。凍結融解試験の結果と、サイクル終了時の圧縮強度結果を表３に示す。
Experimental example 3
After confirming workability in Experimental Example 2, the anchor element fixing material in the PVC pipe was taken out from the PVC pipe, mixed with the nonwoven fabric removed, and a 4 × 4 × 16 cm specimen was prepared. The freeze-thaw test was started 3 hours after contact with water. Table 3 shows the results of the freeze-thaw test and the compressive strength results at the end of the cycle.
＜測定方法＞
凍結融解試験：ＪＩＳ Ａ1148コンクリートの凍結融解試験方法
<Measurement method>
Freeze-thaw test: Freeze-thaw test method for JIS A1148 concrete
実験例４
セメント75％、ＣＡＳガラス12.5％、及び石膏12.5％からなる急硬セメント100部と、本中空微小球0.7部、凝結遅延剤0.5部、及び減水剤αを0.25部を混和したアンカー素子定着材を調製し、幅58mm(外径37mm)、長さ700mmの不織布袋に740ｇ充填し、充填口を、急硬性セメント組成物が漏れないように、ホッチキス止めしアンカー素子定着用カプセルとした。
このアンカー素子定着用カプセルを、表４に示す時間、水に浸漬し、その後、試験用に穿孔した孔に充填した。アンカー素子を用いて、人力で充填したアンカー素子定着用カプセルを破壊し、そのなかのアンカー素子定着材を混合してアンカー素子を定着した。その結果を表４に併記する。
Experimental Example 4
Anchor element fixing material that contains 100 parts of hard cement made of 75% cement, 12.5% CAS glass, and 12.5% gypsum, 0.7 parts of this hollow microsphere, 0.5 part of setting retarder, and 0.25 part of water reducing agent α. A woven fabric bag having a width of 58 mm (outer diameter: 37 mm) and a length of 700 mm was prepared and filled with 740 g, and the filling port was stapled so as not to leak the rapid-hardening cement composition to obtain a capsule for anchor element fixing.
The anchor element fixing capsule was immersed in water for the time shown in Table 4 and then filled into holes drilled for testing. The anchor element fixing capsule filled with human power was broken using the anchor element, and the anchor element fixing material was mixed therein to fix the anchor element. The results are also shown in Table 4.
実験例５
穿孔した孔に、アンカー素子定着用カプセルを充填し、注水してから、５分後にアンカー素子を用いて人力で充填したアンカー素子定着用カプセルを破壊し、そのなかのアンカー素子定着材を混合してアンカー素子を定着したこと以外は実験例４と同様に行った。その結果、実験例と同様の結果が得られた。
Experimental Example 5
After filling the drilled hole with the anchor element fixing capsule and pouring water, use the anchor element to destroy the anchor element fixing capsule filled with human power 5 minutes later, and mix the anchor element fixing material therein. The same procedure as in Experimental Example 4 was conducted except that the anchor element was fixed. As a result, the same result as the experimental example was obtained.
人力で作業できる作業性、冬季における短時間での急硬性と強度発現性、耐久性を得られるセメント組成物として利用可能である。 It can be used as a cement composition capable of obtaining workability that can be operated manually, rapid hardening and strength development in a short time in winter, and durability.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2014001577A (en) * | 2012-06-20 | 2014-01-09 | Nittoc Constr Co Ltd | Injection method |
| JP7424887B2 (en) | 2020-03-27 | 2024-01-30 | 住友大阪セメント株式会社 | Cold-resistant inorganic anchor material and method for fixing anchor members using the anchor material |
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| JPH03225000A (en) * | 1990-07-26 | 1991-10-03 | Denki Kagaku Kogyo Kk | Anchoring of anchor element |
| JP2006335586A (en) * | 2005-05-31 | 2006-12-14 | Denki Kagaku Kogyo Kk | Rapid-hardening cement composition for anchor element fixing material, anchor element fixing material, and method of fixing anchor element |
| JP2009114000A (en) * | 2007-11-02 | 2009-05-28 | Denki Kagaku Kogyo Kk | Element fixation capsule comprising quick hardening component |
| JP2009227563A (en) * | 2008-02-29 | 2009-10-08 | Ube Ind Ltd | Hydraulic composition |
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| JPH0316480B2 (en) * | 1981-04-22 | 1991-03-05 | Denki Kagaku Kogyo Kk | |
| JPH03225000A (en) * | 1990-07-26 | 1991-10-03 | Denki Kagaku Kogyo Kk | Anchoring of anchor element |
| JP2006335586A (en) * | 2005-05-31 | 2006-12-14 | Denki Kagaku Kogyo Kk | Rapid-hardening cement composition for anchor element fixing material, anchor element fixing material, and method of fixing anchor element |
| JP2009114000A (en) * | 2007-11-02 | 2009-05-28 | Denki Kagaku Kogyo Kk | Element fixation capsule comprising quick hardening component |
| JP2009227563A (en) * | 2008-02-29 | 2009-10-08 | Ube Ind Ltd | Hydraulic composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2014001577A (en) * | 2012-06-20 | 2014-01-09 | Nittoc Constr Co Ltd | Injection method |
| JP7424887B2 (en) | 2020-03-27 | 2024-01-30 | 住友大阪セメント株式会社 | Cold-resistant inorganic anchor material and method for fixing anchor members using the anchor material |
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