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現代營建第 270 – 272 , 2002, 6 – 8 1 地下工程先進之防水觀念與施工技術 洪明瑞╱明志技術學院營建管理系助理教授 袁榮宏╱馳發實業股份公司業務副理 蘇洋╱高福營造有限公司副總經理 詹勳次╱詹勳次建築師事務所建築師 謝鎮財╱聯勤總司令部後勤署營工組組長 張惠文╱中央大學土木工程系教授 摘要 地下工程傳統之防水膜(Membrane)舖設,係於結構體表面形成防水塗層與 屏障,惟此施工方式往往因防水材之劣化、搬運與施工過程之破損以及舖設或搭接 方式不當等因素而形成滲漏(Leakage)途徑,甚至造成防水功效之全面喪失。有鑑 於此,本文針對歐美及日本等諸多地區已廣泛應用之「結晶滲透( Crystalline Infiltration)型防水材」塗膜工法,將其特有之結晶造膜作用、裂縫癒合機制以及防 止腐蝕侵襲等能力在地下結構體之使用及工程案例等相關問題,作一簡要的介紹與探 討,期能藉以提供從業人員在地下工程防水設計與施工時之參考。 一、前言 傳統地下工程防水的理念,係利用一完全不透水薄膜,對結構體進行全面性 或局部的包覆與圍堵,期能將水份完全堵絕於結構體外側以達到不透水的目的。 然此單靠一與混凝土完全不同材質而使其擔負防水任務之作法,其功效與長期效 能往往無法確保。究其因,不外乎防水施工過程繁瑣、潛在不利變因多以及品管 不易掌握等因素;諸如搬運與儲存之碰損、舖設順序不當、搭接長度不足、黏貼 不牢靠、素地處理不確實、回填土及其他鋼筋、模板或混凝土澆置等施工過程之 割裂或穿刺等情形。所以,應用於地下工程之各種面防水(Outside Waterproof)工 法(如瀝青防水、薄片防水、塗膜防水以及皂土防水工法等),一旦施工品管不 嚴謹,往往使得防水材在結構體完成前早已產生破損、鬆脫或擠壓變形等現象, 形成水份滲漏的缺口而功虧一簣,自然無法滿足防水的要求。 台灣地處亞熱帶氣候區,春、夏期間雨量豐沛,加以環太平洋地震帶上頻仍 之振動對結構體經常性之損傷,無可避免的導致防水層之破損、鬆脫或變形,因 而造成居家建物普遍之漏水現象。根據中華民國營建防水技術協進會(Waterproof Technical Association ,簡稱 WTA[1]等機構之調查,長期以來台灣地區住宅之漏水 比例可能高達 90%左右,而部分針對公共建物主要瑕疵之調查結果亦發現,漏水 現象的發生次數與重要性更排行首位 [2],顯見國內建物漏水問題之普遍與嚴重 性。故在防水材料與施工技術日新月異的今日,該如何尋求一經濟、可靠且耐用 之地下防水工法以確保防水品質,同時藉以改善居家空間之舒適性,應為土木工 程人員今後無可迴避之課題。 二、地下工程防水施工之回顧 防水材料的最大剋星莫過於紫外線之照射、溫度變化之熱脹冷縮以及雨水之 長期浸潤等作用,俗稱為防水材之三大天然殺手。故對於易受高溫照射、豪雨侵 襲、地震搖晃以及熱脹冷縮影響之地上結構而言,屬處於一較不穩定之防水環 境,在防水技術與品管要求上,其標準自應較穩定之地下防水環境為高;此即使

地下工程先進之防水觀念與施工技術 - cdps.com.t · 以及線防水的功能,方能形成多道阻隔水路的防水屏障。依aci 515.1r-79[4]

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  • 270 272 , 2002, 6 8

    1

    Membrane

    Leakage Crystalline Infiltration

    Outside Waterproof

    Waterproof Technical AssociationWTA[1]90% [2]

  • 270 272 , 2002, 6 8

    2

    2.1

    Body WaterproofFilament[3]

    ACI 515.1R-79[4]Waterproofing BarrierDampproofing BarrierProtective BarrierDecorative Paint Barrier

    Ponding

    2.2

    [3]

    Bentonite

    [35] 2.3

    GIRNAU, 1985

    BARTD.CWMATAMARTA

  • 270 272 , 2002, 6 8

    3

    0.710.82 liter/m2/day1.7 liter/m2/day0.19 liter/m2/day[6]TRTSCEDM, Rev.9ABCS.T.S/S.SAdmixture[78]National Roofing Contractors AssociationNRCA[9]ACINo. ACI 504.1 R-82

    Depression

    2.4

    [5]TRTSTRTSPC[6]

    CRD48-96

    DIN1048TRTS

    [7]CNSASTMJISDINFTMSBSICNLA

    ResinousJettingWater Tightness

    Negative Water Pressure[4][10]

    Spontaneous FissureShrinkage

    Carbonization shrinkageFissure

  • 270 272 , 2002, 6 8

    4

    10,000

    [11] 3.1

    ActivenessXypex1969Xypex1981Xypex XypexConcentrateXCSilica SandCatalytic Chemical Compound[10]

    XypexGamma CureXGXypexXypex

    XypexXypexXMXypexXypex

    Xypex

    XypexPatchy PlugXP

    XypexRestora-Top

    Xypex (Xycrylic-Admix)

    [10] 3.2

    [10]Ca(OH)2

    [11] Xypex

    Catalytic CompoundChelate Ligand Combined with Calcium, LCaCa2+L2-SiO32-Ca2+SiO32-CaSiO3(nH2O)Ca2+L2-Ca(OH)2

  • 270 272 , 2002, 6 8

    5

    Ca2+L2-Ca2+

    CaSiO3(nH2O)

    [10]Central Research Laboratory of Nikki ShojiScanning Electron MicroscopeSEM50mm(1)(2)(3)26[10]

    212

    [10] 3.3

    3.3.1

    [11] 3.3.2

    [11] 3.3.3

    2mm2.5mm480 /m2550/m2230280 /m2Xypex500m2100 /m2350400/m2 3.4

    (1)wet-shake(2)dry-shake(3)

  • 270 272 , 2002, 6 8

    6

    3.4.1

    [10](1)(2)(3)(4)(5)

    0.3mm[12] 3.4.2

    (1)(2)(3) (4)(5)(6)(7)(8)(9)(10) [10-12]Construction Specification InstituteCSI07160Cementitious Crystalline Waterproofing 3.4.3

    (1)(2)4C(3)(4)202474(5)

    (6)(7)

  • 270 272 , 2002, 6 8

    7

    Self-RepairCa2+Ca2+

    SiO32-CaSiO3(nH2O)

    FillCementationSelf-Heal

    23 Hokutoh197240,00040%0.10.2mm199483019957410

    [13] 1.2kgf/cm2

    16 16

    300cc/min 2.JIS A1107

    28%

    3.1,000[13]

    SETSCOXypexPetrography

    PFMPolarising and Fluorescent Microscope3101420Xypex2025mmCrack Width 0.4mm[1415]

    Chloride IonCarbonationDeterioration

  • 270 272 , 2002, 6 8

    8

    [16](1)Capillary(2) )Permeability10-12m/s(3)

    [11]

    [17]

    Xypex

    15.3km887 90 3 UK32+200UK32+210

    CSI-07160Xypex

    1.

    2.U 3.Xypex 4.XypexU

    Xypex 5.Xypex

    UK32+200(1)90412

    (2)90412(3)90412(4)90412(5)90416(6)90420

    UK32+210(1)90412(2)90412(3)90412(4)90413(5)90413(6)90420

  • 270 272 , 2002, 6 8

    9

    921

    Xypex

    [1] No.2

    623 1999 [2] 36

    6568 1999 [3] 1250 1998 [4] ACI 515.1R-79, A Guide to the Use of Waterproofing, Dampproofing, Protective, and

    Decorative Barrier Systems for Concrete, ACI Manual of Concrete Practice Part 5-2000, pp.515.1R-1515.1R-44 (2000).

    [5] 24300 2001

    [6] 4 98106 1991 [7] 15 7892 1996 [8] 4-14-19 1995 [9] NRCA Roofing and Waterproofing Manual, National Roofing Contractors Association

    1989. [10] XYPEX Concrete Waterproofing by CrystallizationA Briefing Data from XYPEX

    Chemical Corporation, Vancouver, Canada, pp.1-75(2000). [11] XYPEX Concrete Waterproofing by Crystallization

    1122000

  • 270 272 , 2002, 6 8

    10

    [12] XYPEX1822000

    [13] Shigemichi. M., Yuzuru. K., and Morichi. H., Repairing of Heavily Cracked Reinforced Concrete Bridge Deck Slab from Underside, 51st Annual Meeting of the Civil Engineering Society of Japan (1996).

    [14] Mr. Kayano, and Mr. Thiyaea , Petrographic Examination of Concrete Core, B23880/XLP, SETSCO SERVICES PTE LTD, Singapore, pp.1-5 (1998).

    [15] Mr. Kayano, and Mr. Thiyaea, Petrographic Examination of Concrete Core, B23689/XLP/1-2, SETSCO SERVICES PTE LTD, Singapore, pp.1-5 (1998).

    [16] Masaaki, I., Newest Development of Concrete Structure Anti-Corrosion Material in Japan, 117125 2001

    [17] Yasuo, M., Masoru, F., and Yukinobu, N., An Enhancement in the Nature of Concrete with a Multiplicative Cement Crystal Type Concrete Material, 48th Annual Meeting of the Civil Engineering Society of Japan (1992).

  • 270 272 , 2002, 6 8

    11

    () 0.001 liter/m2/day 0.01 liter/m2/day 0.1 liter/m2/day 0.5 liter/m2/day 1.0 liter/m2/day

    TRTS [8]

    A B C B

    B A

    B B

    C A

    A

    A B C C

    C B A B

    C

    NRCA [9]

    Hot asphalt or coal tar membranes Modified bitumen membranes Butyl or EPDM membranes or PVC membranes Fluid-applied elastomeric materials Hot rubberized asphalt materials Bentonite waterproofing

    Slab-On-Grade

    Metallic waterproofing or cementitious waterproofing Crystalline waterproofing

    Hot asphalt or coal tar membranes Modified bitumen membranes Butyl or EPDM membranes or PVC membranes Fluid-applied elastomeric materials Metallic waterproofing or cementitious waterproofing Crystalline waterproofing Hot rubberized asphalt materials Asphalt emulsion and chopped glass materials Bentonite waterproofing

    (Walls Below Grade)

    Metallic waterproofing or cementitious waterproofing Crystalline waterproofing

    Hot asphalt or coal tar membranes Modified bitumen membranes Butyl or EPDM membranes or PVC membranes Fluid-applied elastomeric materials Hot rubberized asphalt materials

    (Suspended Decks)

    Vehicle traffic deck coatings Pedestrain traffic deck coatings

  • 270 272 , 2002, 6 8

    12

    [11]

    20

    UV UV

    NSF

    185 1,530 40 180 pH 2.0 12.0 1 30

    Yasuo, M. etc.,1992 2~5mm

    ASTM C39 1981

    20%

    CRD C48

    123m

    175

    10m

    N691967

    5.76104

  • 270 272 , 2002, 6 8

    [11]

    [10]

    [4]

    Xypex [10]

    13

  • 270 272 , 2002, 6 8

    14

    (2) (3) 26 (1)

    SEM Xypex [10]

    1000 m to 10,000 m

    100 m to 3000 m

    70 m to 400 m

  • 270 272 , 2002, 6 8

    15

    REF

    1%Admix

    2%Admix

    REF

    2%Admix

    3%Admix

    4%Admix

    REF

    2.5%Admix

    5%Admix

    0

    20

    40

    60

    80

    100

    120

    140

    Com

    pres

    sive

    Str

    engt

    h A

    s %

    TEST #1 28 DAY STRENGTH

    TEST #2 28 DAY STRENGTH

    TEST #3 28 DAY STRENGTH

    Xypex [10]

    Xypex [10]

    (2)

    (3)(1)

    [12]

    Chipping Section of Slot

    2-3cm3-4cm

    Crack

    Xypex Patchnplug

    Injected cement milk

    Xypex Patchn plug

    Xypex Concentrate

    Xypex Patchnplug

    Xypex Patchy plug

    Xypex Concentrate

    (4)()

  • 270 272 , 2002, 6 8

    16

    (2)

    (3)

    (1)

    [10]

    (5)

    (4)

    Hokutoh [13]

    [11]

  • 270 272 , 2002, 6 8

    (1) (2)

    (3)

    (4) (5)

    (6)

    UK32+200

    17

  • 270 272 , 2002, 6 8

    (1) (2)

    (3)

    (4)

    (5)

    (6)

    UK32+210

    18