ᮾᛴᘓタᢏ⾡◊✲ᡤሗ No.39 ᢏ⾡◊✲ᡤ ᵓᕤἲࢢ࣮ࣝࣉ U.D.C 691.32
ప⢓ᛶᆺቑ⢓⣔㧗ὶືࢥࣥࢡ࣮ࣜࢺࡢᐇ⏝㛵ࡍࡿ◊✲
ྂᕝ 㞝ኴ
㸨ᒸ ╩ᑦ
㸨బ⸨ Ⰻ
㸨୰⏣ ᐶ
㸨 せ ⣙㸸 ᮏ◊✲ࡣ㸪ቑ⢓୍ᾮᆺࡢ㧗ᛶ⬟ AE ῶỈࢆ⏝ࡋࡓ㧗ὶືࢥࣥࢡ࣮ࣜࢺࡢᐇ⏝ࡢࡓࡵ㸪ᐇ㦂ⓗ᳨ウࢆ⾜ࡗࡓࡶ ࡢ࡛࠶ࡿࠋࡑࡢ⤖ᯝ㸪 ࣈ࣮ࣜࢹࣥࢢ㔞ࡣỈࢭ࣓ࣥࢺẚ 50%௨ୗࡢ⠊ᅖ࡛ࡣ 0.1cm3/cm2௨ୗ࡛࠶ࡿࡓࡵ㸪CFT 㐀ሸࢥ ࣥࢡ࣮ࣜࢺࡢ┠ᶆ್ࢆ‶㊊ࡍࡿࡶࡢ࡛࠶ࡗࡓࠋࡲࡓ㸪ỿ㝆㔞ࡶ 2mm ௨ୗ࡛࠶ࡾ㸪CFT 㐀ሸࢥࣥࢡ࣮ࣜࢺࡢ┠ᶆ್ࢆ‶㊊ ࡍࡿ⤖ᯝ࡛࠶ࡗࡓࠋ࣏ࣥࣉᅽ㏦ᛶࡣ㸪ຍᅽࣈ࣮ࣜࢹࣥࢢヨ㦂ࡼࡾホ౯ࢆヨࡳ㸪ᅽ㏦ࡀⰋዲ࡞⠊ᅖࡲࡿ⬺Ỉ㔞࡛࠶ࡿ ࡇࢆ᫂ࡽࡋࡓࠋຊᏛᛶ≧㛵ࡋ࡚ࡣ㸪ᅽ⦰ᙉᗘ㟼ᙎᛶಀᩘࡢ㛵ಀࡀ㸪୍⯡ⓗ࡞ࢥࣥࢡ࣮ࣜࢺྠ➼࡛࠶ࡿࡇࢆ☜ ㄆࡋࡓࠋ௨ୖࡼࡾ㸪ቑ⢓୍ᾮᆺࡢ㧗ᛶ⬟ AE ῶỈࢆ⏝ࡋࡓ㧗ὶືࢥࣥࢡ࣮ࣜࢺࡣ㸪ᚑ᮶ࡢ㧗ὶືࢥࣥࢡ࣮ࣜࢺྠ➼ ࡢᛶ⬟ࢆ᭷ࡍࡿ⪃࠼ࡽࢀࡿࠋ ࣮࣮࢟࣡ࢻ 㸸 㧗ὶືࢥࣥࢡ࣮ࣜࢺ㸪ቑ⢓㸪ప⢓ᛶ㸪CFT 㐀 ┠ ḟ㸸 1. ࡣࡌࡵ 3. ヨ㦂⤖ᯝ 2. ◊✲ィ⏬ 4. ࡲࡵ ࡣࡌࡵ ㏆ᖺ㸪㐣ᐦ㓄➽ࡸពⓗ」㞧࡞㒊ᮦᑐࡋ࡚㸪ሸ ᛶࡢྥୖࡸᕤࡢ┬ຊࢆ┠ⓗ㸪㧗ὶືࢥࣥࢡ࣮ࣜࢺ ࡢ㟂せࡀ㧗ࡲࡗ࡚࠸ࡿࠋࡲࡓ㸪ᚋࡢᘓタ⌧ሙ࡛ࡢ⇍⦎ ᕤࡢ㊊ࡸ⅏ᐖࡢ㎿㏿ᕤᑐᛂࡍࡿࡓࡵ㸪㧗ὶື ࢥࣥࢡ࣮ࣜࢺࡢ㟂せࡣࡉࡽ㧗ࡲࡿ⪃࠼ࡽࢀ࡚࠸ࡿ 1)ࠋ ࡇࢀࡲ࡛ࡢ㧗ὶືࢥࣥࢡ࣮ࣜࢺࡣ㸪ᘓ⠏ศ㔝࠾࠸࡚ ࡣ㸪ᮦᩱศ㞳ᢠᛶࡢྥୖࢆ┠ⓗ㸪⢊య㔞ࢆከࡃࡋࡓ ⢊య⣔㧗ὶືࢥࣥࢡ࣮ࣜࢺࡀከࡃ⏝࠸ࡽࢀ࡚ࡁࡓࠋࡑࡢ ୍᪉࡛㸪⢊య㔞ࢆቑࡸࡍᚲせࡢ࡞࠸ቑ⢓ࢆ⏝࠸ࡓቑ⢓ ⣔㧗ὶືࢥࣥࢡ࣮ࣜࢺࡣ㸪ቑ⢓ࡢู㏵ᢞධࡸ࣑࢟ࢧ ࡢὙί࡞ࡀᚲせ࡛࠶ࡿࡇࡽ㸪୍⯡ⓗ࡞ᬑཬ⮳ࡗ ࡚࠸࡞࠸ࡢࡀ⌧≧࡛࠶ࡿࠋࡋࡋ࡞ࡀࡽ㸪㏆ᖺ㸪㧗ᛶ⬟ AE ῶỈቑ⢓ࢆ୍ᾮࡋ㸪㐣ᗘ࡞⢓ᛶࢆᣢࡓ࡞࠸ Ꮫΰࡀ㛤Ⓨࡉࢀࡓࡇࡼࡾ㸪ቑ⢓⣔㧗ὶືࢥ ࣥࢡ࣮ࣜࢺࡢㄢ㢟࡛࠶ࡿቑ⢓ࡢู㏵ᢞධࡸ࣑࢟ࢧࡢὙ ίࢆせࡍࡿ㸪᪂ࡋ࠸ࢱࣉࡢቑ⢓⣔㧗ὶືࢥࣥࢡ ࣮ࣜࢺࡢ〇㐀ࡀྍ⬟࡞ࡗࡓ2)ࠋ ࡋࡋ࡞ࡀࡽ㸪ࡇࡢ᪂つ࡞ቑ⢓⣔㧗ὶືࢥࣥࢡ࣮ࣜ ࢺࡢ᳨ウࡣᑡ࡞ࡃ㸪᫂☜࡞Ⅼࡀከ࠸ࠋࡑࡢࡓࡵ㸪ᮏ ◊✲ࡣ᪂つ࡞ቑ⢓⣔㧗ὶືࢥࣥࢡ࣮ࣜࢺࡢᐇ⏝ࢆ┠ ⓗ㸪ᐇ㦂ⓗ᳨ウࢆ⾜ࡗࡓࡶࡢ࡛࠶ࡿࠋ ◊✲ィ⏬ ヨ㦂⏝࠸ࡓࢥࣥࢡ࣮ࣜࢺࡣ㸪┠ᶆ✵Ẽ㔞ࢆ 4.5% ࡋࡓㄪྜ(௨ୗ㸪୍⯡⏝␎グ)࡛ࡣ㸪ᬑ㏻࣏ࣝࢺࣛࣥࢻ ࢭ࣓ࣥࢺ(N)ࢆ⏝࠸㸪ㄪྜ⟶⌮ᙉᗘ 27N/mm2㸪36 N/mm2 ࠾ࡼࡧ 45 N/mm2 (௨ୗ㸪27N㸪36N㸪45N ␎グ)┦ᙜ ࡍࡿỈࢭ࣓ࣥࢺẚࡢ 3 Ỉ‽ࡋ㸪┠ᶆ✵Ẽ㔞ࢆ 3.0% ࡋࡓㄪྜ(௨ୗ㸪CFT ⏝␎グ)࡛ࡣ㸪ᬑ㏻࣏ࣝࢺࣛࣥࢻ ࢭ࣓ࣥࢺ(N)࠾ࡼࡧ୰ᗤ⇕࣏ࣝࢺࣛࣥࢻࢭ࣓ࣥࢺ(M)ࢆ⏝ ࠸ 㸪 Ỉ ࢭ ࣓ ࣥ ࢺ ẚ ࢆ 50% 㸪 45% ࠾ ࡼ ࡧ 35%( ௨ ୗ 㸪 WC50N(M)㸪WC 45N(M)㸪WC 35N(M))␎グ)ࡢ 6 Ỉ‽ ࡋࡓࠋ⏝ᮦᩱࢆ⾲ 1 㸪ࢥࣥࢡ࣮ࣜࢺࡢㄪྜ࠾ࡼࡧ ࣇࣞࢵࢩࣗᛶ≧ࢆ⾲ 2 ♧ࡍࠋ࡞࠾㸪┠ᶆࢫࣛࣥࣉࣇࣟ ࣮ࡣ㸪27N ࡣ 50cm ࡋ㸪ࡑࡢࡣ 60cm ࡋࡓࠋ ⾲ ⏝ᮦᩱ ᮦᩱ ✀㢮 ≀ᛶ㸪⏘ᆅ➼ ࢭ࣓ࣥࢺ (C) ᬑ㏻࣏ࣝࢺࣛࣥࢻࢭ࣓ࣥࢺ (N) ᐦᗘ㸸3.16g/cm 3 㸪ẚ⾲㠃✚㸸3230cm3/g ୰ᗤ⇕࣏ࣝࢺࣛࣥࢻࢭ࣓ࣥࢺ (M) ᐦᗘ㸸3.21g/cm3㸪ẚ⾲㠃✚㸸3670cm3 /g ⣽㦵ᮦ (S) S1㸸ᒣ◁ [80%] ᐦᗘ㸸2.64g/cm 3 㸪༓ⴥ┴ྩὠᕷ S2㸸▼⅊ᒾ○◁ [20%] ᐦᗘ㸸2.65g/cm3㸪ᇸ⋢┴㣤⬟ᕷ ⢒㦵ᮦ (G) G1㸸◁ᒾ○▼ [50%] ᐦᗘ㸸2.66g/cm 3 㸪ᮾி㒔すከᦶ㒆 G2㸸▼⅊ᒾ○▼ [50%] ᐦᗘ㸸2.70g/cm3㸪ᒣཱྀ┴⨾⚇ᕷ ⦎ΰࡐỈ (W) ୖỈ㐨Ỉ ⚄ዉᕝ┴┦ᶍཎᕷ ΰ (Ad) 㧗ᛶ⬟ AE ῶỈ(ቑ⢓୍ᾮࢱࣉ) ࣏ࣜ࢝ࣝ࣎ࣥ㓟࢚࣮ࢸࣝ⣔ྜ≀ ቑ⢓ᛶ㧗ศᏊྜ≀ࡢ」ྜయ 㸨1 㦵ᮦࡢᐦᗘࡣ⾲ᐦᗘ㸪[ ]ෆࡣΰྜྜ㸸㉁㔞ẚ 31 * 技術研究所 構工法グループ U.D.C 691.32低粘性型増粘剤系高流動コンクリートの実用化に関する研究
古川 雄太
＊大岡 督尚
＊佐藤 良介
＊中田 寛二
＊ 31 東急建設技術研究所報No.39 東急建設技術研究所報No.39┿ 1 ࢫࣛࣥࣉࣇ࣮ࣟヨ㦂࠾ࡅࡿ㸪୍⯡⏝ㄪྜࡢ ࢥࣥࢡ࣮ࣜࢺࡢ≧ែࢆ♧ࡍࠋ┿ 1 ࡼࡾ㸪࠸ࡎࢀࡢࢥࣥ ࢡ࣮ࣜࢺࡶ➃㒊ࡲ࡛⢒㦵ᮦࡀ⾜ࡁΏࡗ࡚࠾ࡾ㸪୰ኸ㒊 ⢒㦵ᮦࡀ㐢ᅾࡍࡿࡇࡶ࡞ࡃ㸪Ⰻዲ࡞≧ែ࡛࠶ࡿࡇࡀ ఛ࠼ࡿࠋࡲࡓ㸪36N ࠾ࡼࡧ 45N ࡢࢫࣛࣥࣉࣇ࣮ࣟ50cm ฿㐩㛫ࡣ㸪3 ⛊ࡽ 4 ⛊⛬ᗘ㸪Ṇ㛫ࡣ 30 ⛊ࡽ 40 ⛊⛬ᗘ࡛࠶ࡾ㸪ᚑ᮶ࡢ㧗ὶືࢥࣥࢡ࣮ࣜࢺẚ࡚㸪 ࢥࣥࢡ࣮ࣜࢺࡢὶືࡀ᪩ࡃ㸪⢓ᛶࡀప࠸ࡇࡀᮏ㧗ὶື ࢥࣥࢡ࣮ࣜࢺࡢ≉ᚩ࡛࠶ࡿࠋ ヨ㦂㡯┠ࢆ⾲ 3 ♧ࡍࠋࣈ࣮ࣜࢹࣥࢢヨ㦂ࡣ㸪୍⯡ ⏝࠾ࡼࡧ CFT ⏝ࡢㄪྜ࡛ᐇࡋ㸪ຍᅽࣈ࣮ࣜࢹࣥࢢ ヨ㦂ࡣᩥ⊩ 3)ࢆཧ⪃ࡋ୍࡚⯡⏝ࡢ㓄ྜࡢࡳ࡛ᐇࡋ ࡓࠋỿ㝆㔞ヨ㦂ࡣ㸪CFT ⏝ࡢㄪྜ࡛ࡢࡳᐇࡋ㸪┤ᚄ 15cm㸪㧗ࡉ 30cm ࡢ⡆᫆ᆺᯟヨᩱࢆワࡵ㸪㠀᥋ゐᆺࡢ ࣮ࣞࢨ࣮ኚィࢆ⏝࠸࡚ୖ㒊ࡢỿ㝆㔞ࢆ ᐃࡋࡓࠋࣇࣟ ࣮ᅇᛶ≧ヨ㦂ࡣ㸪36N ࠾ࡼࡧ WC45M ࠾࠸࡚ࡢࡳᐇ ࡋ㸪⦎ୖࡾࡽ 30 ศ㛫㝸࡛ࢫࣛࣥࣉࣇ࣮ࣟヨ㦂ࢆ⾜ ࠸㸪ࢫࣛࣥࣉࣇ࣮ࣟࡀ 50cm ࢆୗᅇࡗࡓⅬ࡛㸪ቑ⢓ ᡂศࢆྵࡲ࡞࠸୍⯡ⓗ࡞ὶືࢆῧຍࡍࡿࡇࡼࡿ ࣇ࣮ࣟᅇᛶ≧ࡢ☜ㄆࢆ⾜ࡗࡓࠋ࡞࠾㸪ࣇ࣮ࣟᅇᛶ≧ ࡢヨ㦂⏝࠸ࡓࢥࣥࢡ࣮ࣜࢺࡣ㸪ࡢヨ㦂ࡣู⦎ΰ ࡐࢆ⾜ࡗࡓヨᩱࢆ⏝࠸ࡓࠋᅽ⦰ᙉᗘ࠾ࡼࡧ㟼ᙎᛶಀᩘࡣ㸪 ୍⯡⏝࠾ࡼࡧ CFT ⏝ࡢㄪྜ࡛ᐇࡋ㸪ヨ㦂ᮦ㱋ࡣ 28 ᪥ ࡋࡓࠋ ヨ㦂⤖ᯝ ࣈ࣮ࣜࢹࣥࢢヨ㦂 ᅗ 1 ୍⯡⏝ࡢྛࢥࣥࢡ࣮ࣜࢺࡢࣈ࣮ࣜࢹࣥࢢヨ㦂 ⤖ᯝ㸪ᅗ 2 ࡣ CFT ⏝ࡢྛࢥࣥࢡ࣮ࣜࢺࡢࣈ࣮ࣜࢹ ࣥࢢヨ㦂⤖ᯝࢆ♧ࡍࠋᅗ 1 ࡼࡿ㸪27N ࡀ᭱ࡶࡁ࠸ ࣈ࣮ࣜࢹࣥࢢ㔞࡛࠶ࡿࡀ㸪0.3cm3 /cm2௨ୗ࡛࠶ࡾ㸪⪏ ஂᛶ≧ࡁ࡞ᙳ㡪ࢆཬࡰࡍࡼ࠺࡞ࣈ࣮ࣜࢹࣥࢢ㔞࡛ ࡣ࡞ࡗࡓ4)ࠋᅗ 2 ࡽࡣ㸪 CFT 㐀ሸࢥࣥࢡ࣮ࣜࢺ ࡢ┠ᶆ್5)࡛࠶ࡿࣈ࣮ࣜࢹࣥࢢ㔞 0.1cm3 /cm2௨ୗࢆ‶ ㊊ࡍࡿ⤖ᯝࢆㄞࡳྲྀࢀࡿࡀ㸪M ࢭ࣓ࣥࢺࢆ⏝࠸ࡓࢥࣥ ࢡ࣮ࣜࢺࡣ㸪ྠ୍Ỉࢭ࣓ࣥࢺẚࡢ N ࢭ࣓ࣥࢺࢆ⏝࠸ࡓ ࢥࣥࢡ࣮ࣜࢺࡼࡾࡶࡁ࠸್ࢆ♧ࡋ࡚࠾ࡾ㸪Ỉࢭ࣓ࣥࢺ ẚ 50%ࡢࡶࡢ࡛ࡣ 0.1cm3 /cm2㏆࠸್࡛࠶ࡿࡓࡵ㸪M ࢭ࣓ࣥࢺࢆ⏝࠸ࡓ㧗࠸Ỉࢭ࣓ࣥࢺẚࡢࢥࣥࢡ࣮ࣜࢺࡣ␃ ពࡀᚲせ࡛࠶ࡿ⪃࠼ࡽࢀࡿࠋ ⾲ ࢥࣥࢡ࣮ࣜࢺࡢㄪྜ࠾ࡼࡧࣇࣞࢵࢩࣗᛶ≧ グྕ ┠ᶆ ࣇ࣮ࣟ (cm) ┠ᶆ ✵Ẽ㔞 (%) W/C (%) s/a (%) ༢㔞(kg/m3) ࣇࣞࢵࢩࣗᛶ≧ W C S G Ad ࢫࣛࣥࣉ ࣇ࣮ࣟ (cm) ✵Ẽ㔞 (%) ᗘ (Υ) 27N 50 4.5 59.3 52.4 174 294 953 878 4.410 55.0 4.4 23.5 36N 60 4.5 47.1 50.0 174 370 878 890 4.625 64.5 4.8 22.0 45N 60 4.5 39.0 47.4 174 447 801 903 5.364 61.0 5.1 22.0 WC50N 60 3.0 50.0 51.9 174 348 940 884 6.438 56.5 2.5 24.0 WC45N 60 3.0 45.0 50.6 174 387 900 892 6.192 59.0 2.5 22.5 WC35N 60 3.0 35.0 46.9 174 498 792 910 6.972 74.0 2.0 23.0 WC50M 60 3.0 50.0 52.0 174 348 945 884 5.916 62.5 2.9 23.0 WC45M 60 3.0 45.0 50.7 174 387 905 892 6.192 61.5 3.0 23.0 WC35M 60 3.0 35.0 47.1 174 498 798 910 6.972 71.5 3.8 23.0 a) 27N b) 36N c) 45N ┿ ࢫࣛࣥࣉࣇ࣮ࣟヨ㦂࠾ࡅࡿࢥࣥࢡ࣮ࣜࢺࡢ≧ែ ⾲ ヨ㦂㡯┠ ヨ㦂㡯┠ ᪉ἲ ୍⯡⏝ CFT⏝ ࣈ࣮ࣜࢹࣥࢢ㔞 JIS A 1123 ۑ ۑ ຍᅽࣈ࣮ࣜࢹࣥࢢ ᩥ⊩ 3 ۑ ̿ ỿ㝆㔞 JASS 5 T503-2009 ̿ ۑ ࣇ࣮ࣟᅇᛶ≧ ̿ ۑ㸨1 ۑ㸨2 ᅽ⦰ᙉᗘ JIS A 1108 ۑ ۑ 㟼ᙎᛶಀᩘ JIS A 1149 ۑ ۑ 㸨1 36N ࡢࡳᐇ 㸨2 WC45M ࡢࡳᐇ 東急建設技術研究所報No.39 32
ຍᅽࣈ࣮ࣜࢹࣥࢢヨ㦂 ᅗ 3 ຍᅽࣈ࣮ࣜࢹࣥࢢヨ㦂⤖ᯝࢆ♧ࡍࠋᅗ୰ࡣ㸪 ᩥ⊩ 3)♧ࡉࢀ࡚࠸ࡿࠕᅽ㏦ᛶࡀⰋዲ⪃࠼ࡽࢀࡿ⠊ ᅖࠖࢆ♧ࡋ࡚࠸ࡿࠋᅗ 3 ࡼࡾ㸪ヨ㦂⏝࠸ࡓࢥࣥࢡ࣮ࣜ ࢺࡣ㸪ప⢓ᛶ࡛ࡣ࠶ࡿࡀቑ⢓ࢆ⏝࠸ࡓࢥࣥࢡ࣮ࣜࢺ࡛ ࠶ࡿࡓࡵ㸪ᚑ᮶ࡢቑ⢓ࡸᅽ㏦ຓࢆ⏝࠸ࡓࢥࣥࢡࣜ ࣮ࢺྠᵝ 6)㸪⬺Ỉ㔞ࡣᑠࡉࡃୗ㝈್ᐤࡾࡢ್ࢆ♧ࡍ ഴྥ࡛࠶ࡗࡓࠋࡋࡋ࡞ࡀࡽ㸪࠸ࡎࢀࡢࢥࣥࢡ࣮ࣜࢺࡶ ࠕᅽ㏦ᛶࡀⰋዲ⪃࠼ࡽࢀࡿ⠊ᅖࠖࡲࡗ࡚࠾ࡾ㸪ࢥ ࣥࢡ࣮ࣜࢺ࣏ࣥࣉࡼࡿᅽ㏦ࡣⰋዲ࡛࠶ࡿ⪃࠼ࡽࢀࡿࠋ ỿ㝆㔞ヨ㦂 ᅗ 4 ỿ㝆㔞ヨ㦂⤖ᯝࢆ♧ࡍࠋࡇࢀࡼࡿ㸪࠸ࡎࢀ ࡢࢥࣥࢡ࣮ࣜࢺࡶ⤒㐣㛫ࡀ 4 㛫⛬ᗘࡲ࡛ࡣỿ㝆㔞ࡀ ቑࡍࡿഴྥ࡛࠶ࡿࡀ㸪4 㛫௨㝆ࡣ⦆ࡸ࡞ࡿഴྥ ࡀㄆࡵࡽࢀࡓࠋࡲࡓ㸪 CFT 㐀ሸࢥࣥࢡ࣮ࣜࢺࡢ┠ᶆ ್ 5) ࡛࠶ࡿỿ㝆㔞 2mm ௨ୗࢆ‶㊊ࡍࡿ⤖ᯝ࡛࠶ࡗࡓࠋ ࡋࡋ࡞ࡀࡽ㸪ࣈ࣮ࣜࢹࣥࢢ㔞ྠᵝ㸪M ࢭ࣓ࣥ ࢺࢆ⏝࠸ࡓࢥࣥࢡ࣮ࣜࢺࡣ N ࢭ࣓ࣥࢺࢆ⏝࠸ࡓࡶࡢࡼ ࡾࡶࡁ࠸ỿ㝆㔞࡛࠶ࡾ㸪≉Ỉࢭ࣓ࣥࢺẚ 50%ࡢࡶ ࡢࡣࡁ࠸ỿ㝆㔞࡛࠶ࡿࡇࡽ㸪ࢲࣇ࣒ࣛୗ㒊 㧗࠸ሸᛶࡀせồࡉࢀࡿࡼ࠺࡞ሙྜࡣ㸪␃ពࡀᚲせ࡛࠶ ࡿ⪃࠼ࡽࢀࡿࠋ ࣇ࣮ࣟᅇᛶ≧ヨ㦂 ᅗ 5 ࣇ࣮ࣟᅇᛶ≧ヨ㦂⤖ᯝࢆ♧ࡍࠋᮏヨ㦂࡛ࡣ㸪 ⦎ΰࡐ㔞ࡀᑡ࡞ࡗࡓࡇࡸྛ ᐃⅬࡲ࡛ࡢ㛫ࡣ᧠ᢾ ࡣࡏࡎ㟼⨨ࡋ࡚࠸ࡓࡓࡵ㸪ࢫࣛࣥࣉࣇ࣮ࣟࡢపୗࡣ ࡁ࠸⤖ᯝ࡛࠶ࡗࡓࠋࡋࡋ࡞ࡀࡽ㸪ࢫࣛࣥࣉࣇ࣮ࣟࡀ 50cm ࢆୗᅇࡗࡓⅬ࡛㸪36N ࠾ࡼࡧ WC45M ࡢ࠸ࡎࢀ ࡶ㸪ቑ⢓ᡂศࢆྵࡲ࡞࠸୍⯡ⓗ࡞ὶືࢆࢭ࣓ࣥࢺ 㔞ࡢ 0.2vol%ῧຍࡍࡿࡇ࡛㸪ศ㞳ࡍࡿࡇ࡞ࡃࢫࣛࣥ ࣉࣇ࣮ࣟࢆチᐜ್ᅇࡋᚓࡿ⤖ᯝࡀᚓࡽࢀࡓࠋࡇࢀ ࡼࡾ㸪᭱ึࡢ⦎ΰࡐῧຍࡋࡓቑ⢓ࡼࡿᮦᩱศ㞳 ᢠᛶࡣ㸪పୗࡋ࡚࠸࡞࠸ࡇࡀ☜ㄆ࡛ࡁࡓࠋࡼࡗ࡚㸪 ࢫࣛࣥࣉࣇ࣮ࣟࢆチᐜ್ᅇࡉࡏࡿሙྜ㸪᪂ࡓቑ⢓ ᡂศࢆῧຍࡍࡿᚲせࡣ࡞࠸⪃࠼ࡽࢀࡿࠋ ᅽ⦰ᙉᗘ࠾ࡼࡧ㟼ᙎᛶಀᩘヨ㦂 ᅗ 6 ྛࢥࣥࢡ࣮ࣜࢺࡢᅽ⦰ᙉᗘ㟼ᙎᛶಀᩘࡢ㛵ಀ ࢆ♧ࡍࠋᅗ୰ࡢᐇ⥺ࡣ㸪RC つ‽ 7) ♧ࡉࢀ࡚࠸ࡿ㟼ᙎ ᛶಀᩘࡢ⟬ᐃ್(k1=1.1,Ț=2.35t/m3)ࢆ♧ࡋ࡚࠸ࡿࠋᅗ 6 ࡽࡣ㸪ᅽ⦰ᙉᗘࡀࢭ࣓ࣥࢺ✀㢮࠾ࡼࡧỈࢭ࣓ࣥࢺẚ ᛂࡌ࡚㸪୍⯡ⓗ࡞ࢥࣥࢡ࣮ࣜࢺྠ➼ࡢ್ࢆ᭷ࡋ࡚࠸ࡿ ࡇࡀㄞࡳྲྀࢀࡿࠋࡲࡓ㸪㟼ᙎᛶಀᩘࡣ RC つ‽ᘧ k1=1.1 ࢆ௦ධࡋࡓ⟬ᐃ್ࡰ୍⮴ࡋ࡚࠸ࡿࡀ㸪ᮏ◊✲ ࡢࢥࣥࢡ࣮ࣜࢺࡣ㸪⢒㦵ᮦ▼⅊ᒾࢆ 50%⏝ࡋ࡚࠸ ࡿࡇࡽᩚྜᛶࡀ࠶ࡿ⪃࠼ࡽࢀࡿࠋࡑࡢࡓࡵ㸪ᮏ◊ ✲ࡢ㧗ὶືࢥࣥࢡ࣮ࣜࢺࡣ㸪୍⯡ⓗ࡞ࢥࣥࢡ࣮ࣜࢺྠ ➼ࡢຊᏛᛶ≧ࢆ᭷ࡋ࡚࠸ࡿ⪃࠼ࡽࢀࡿࠋ ᅗ ỿ㝆㔞ヨ㦂⤖ᯝ ᅗ ຍᅽࣈ࣮ࣜࢹࣥࢢヨ㦂⤖ᯝ ᅗ ࣈ࣮ࣜࢹࣥࢢヨ㦂⤖ᯝ(CFT ⏝) ᅗ ࣈ࣮ࣜࢹࣥࢢヨ㦂⤖ᯝ(୍⯡⏝) ỿ㝆 㔞 PP ⤒㐣㛫 㛫
:&1 :&1 :&1 :&0 :&0 :&0
⬺Ỉ 㔞 PO ⤒㐣㛫 ⛊ ୖ㝈್ ୗ㝈್ 1 1 1 Ⰻዲ࡞⠊ ᅖ ࣈ ࣮ࣜࢹ ࣥࢢ㔞 FP F P ⤒㐣㛫 ศ :&1 :&0 :&1 :&0 :&1 :&0 ࣈ ࣮ࣜࢹ ࣥࢢ㔞 FP F P ⤒㐣㛫 ศ 1 1 1 東急建設技術研究所報No.39 33
ࡲࡵ ቑ⢓ࢆ୍ᾮࡋࡓ㧗ᛶ⬟ AE ῶỈࢆ⏝ࡋࡓ㧗ὶ ືࢥࣥࢡ࣮ࣜࢺࡢㅖᛶ≧ࡘ࠸᳨࡚ウࢆ⾜ࡗࡓ⤖ᯝ㸪௨ ୗࡢ⤖ㄽࢆᚓࡓࠋ 1) ࣈ࣮ࣜࢹࣥࢢ㔞ࡣ㸪୍⯡ⓗ࡞ࢥࣥࢡ࣮ࣜࢺྠ➼ ࡛࠶ࡾ㸪⪏ஂᛶࡁ࡞ᙳ㡪ࢆཬࡰࡍࡼ࠺࡞್࡛ࡣ ࡞ࡗࡓࠋ 2) CFT ⏝ࡢㄪྜ࡛ࡣ㸪CFT 㐀ሸࢥࣥࢡ࣮ࣜࢺࡢ┠ ᶆ್ࢆ‶㊊ࡍࡿ್࡛࠶ࡗࡓࠋ 3) ຍᅽࣈ࣮ࣜࢹࣥࢢヨ㦂࡛ࡣ㸪ୗ㝈್ᐤࡾࡢ್ࢆ♧ ࡋࡓࡶࡢࡢ㸪ᅽ㏦ᛶࡀⰋዲ⪃࠼ࡽࢀࡿ⠊ᅖ࡛࠶ࡗ ࡓࠋ 4) ỿ㝆㔞ࡣ㸪࠸ࡎࢀࡢㄪྜ࡛ࡶ 2mm ௨ୗ࡛࠶ࡾ㸪 CFT 㐀ሸࢥࣥࢡ࣮ࣜࢺࡢ┠ᶆ್ࢆ‶㊊ࡍࡿ್࡛ ࠶ࡗࡓࠋ 5) ࢫࣛࣥࣉࣇ࣮ࣟࡀチᐜ್ࢆୗᅇࡗࡓሙྜ㸪ቑ⢓ᡂ ศࢆྵࡲ࡞࠸୍⯡ⓗ࡞ὶືࢆῧຍࡍࡿࡇ࡛㸪 ࢫࣛࣥࣉࣇ࣮ࣟࡀチᐜ್ᅇࡋࡓࠋ 6) ᅽ⦰ᙉᗘ㟼ᙎᛶಀᩘࡢ㛵ಀࡣ㸪୍⯡ⓗ࡞ࢥࣥࢡࣜ ࣮ࢺྠ➼࡛࠶ࡗࡓࠋ ㅰ ㎡ ᮏ◊✲ࢆ⾜࠺࠶ࡓࡾ㸪㛵ᮾᏱ㒊ࢥࣥࢡ࣮ࣜࢺᕤᴗᰴᘧ♫㸪BASF ࢪࣕࣃࣥᰴᘧ♫㸪ᕤᏛ㝔Ꮫ㜿㒊◊✲ᐊࡈ༠ຊ㡬ࡁࡲࡋࡓࠋ ࡇࡇグࡋ࡚ㅰពࢆ⾲ࡋࡲࡍࠋ ཧ⪃ᩥ⊩ 1) ࢭ࣓ࣥࢺ᪂⪺♫㸸≉㞟ࠕ㧗ὶືࢥࣥࢡ࣮ࣜࢺࡢ⌧≧ᒎᮃࠖ᭶หࢥࣥࢡ࣮ࣜࢺࢸࢡࣀ㸪Vol.29㸪No.3㸪pp.70-116㸪2010.3 2) ᑠἨ࣭Ⳣಛ࣭㜿ྜ㸸᪂つ࡞ప⢓ᛶᆺቑ⢓⣔㧗ὶືࢥࣥࢡ࣮ࣜࢺࡢᇶᮏ≉ᛶ(ࡑࡢ 1࣭ࡑࡢ 2)㸪᪥ᮏᘓ⠏ᏛᏛ⾡ㅮ₇᱾ᴫ㞟 (㛵ᮾ)㸪pp.315-318㸪2011.8 3) ᪥ᮏᘓ⠏Ꮫ㸸ࢥࣥࢡ࣮ࣜࢺ࣏ࣥࣉᕤἲᕤᣦ㔪࣭ྠゎㄝ㸪pp.237-239㸪1994 4) ᪥ᮏᘓ⠏Ꮫ㸸㧗⪏ஂᛶ㕲➽ࢥࣥࢡ࣮ࣜࢺ㐀タィᕤᣦ㔪()࣭ྠゎㄝ㸪p.7㸪1991 5) ᪂㒔ᕷࣁ࢘ࢪࣥࢢ༠㸸ࢥࣥࢡ࣮ࣜࢺሸ㗰⟶(CFT)㐀ᢏ⾡ᇶ‽࣭ྠゎㄝࡢ㐠⏝ཬࡧィ⟬➼㸪2012.8 6) ㇂ཱྀ࣭ቑ⏣࣭∵ᓥ㸸㧗ὶືࢥࣥࢡ࣮ࣜࢺࡢ࣏ࣥࣉᅽ㏦ࡼࡿရ㉁ኚ㛵ࡍࡿ◊✲㸪ࢥࣥࢡ࣮ࣜࢺᕤᏛㄽᩥ㞟㸪Vol.9㸪No1㸪 pp.71-85㸪1998.1 7) ᪥ᮏᘓ⠏Ꮫ㸸㕲➽ࢥࣥࢡ࣮ࣜࢺᵓ㐀ィ⟬つ‽࣭ྠゎㄝ㸪pp.38-39㸪1999.11
STUDY ON PRACTICAL USE OF LOW-VISCOSITY TYPE HIGH FLUIDITY CONCRETE
WITH VISCOSITY AGENT
Y.Furukawa, T.Oh-oka, R,Sato , and H.Nakata
This study has examined high fluidity concrete using air-entraining and high-range water-reducing admixture with viscosity agent for practical use. As a result, bleeding satisfied target value as far as water-cement ration was less than 50%. In addition, the quantity of sedimentation was less than 2mm and satisfied target value. It was confirmed that pumpability was superior by the pressed bleeding test. About mechanical properties, compressive strength and static modulus of elasticity was equal to normal concrete. In conclusion, it was revealed that high fluidity concrete using air-entraining and high-range water-reducing admixture with viscosity agent was equal to conventional high fluidity concrete.
ᅗ ࣇ࣮ࣟᅇᛶ≧ヨ㦂⤖ᯝ ᅗ ᅽ⦰ᙉᗘ㟼ᙎᛶಀᩘࡢ㛵ಀ ࢫ ࣛࣥࣉ ࣇ࣮ࣟ FP ⤒㐣㛫 ศ ὶືῧຍ C0.2% 1 :&0 㟼ᙎᛶಀᩘ N1 P P ᅽ⦰ᙉᗘ 1PP 1 :&1 :&0 1 :&1 :&0 1 :&1 :&0 東急建設技術研究所報No.39 34
