EDO-EPS EDO-EPS ConstructionMethod ConstructionMethod ConstructionMethod ConstructionMethod EPS Construction Method PS Construction Method D l t l t O i ti i ti Development evelopment Organization rganization SEKISUI SEKISUI PLASTICS.CO.LTD PLASTICS.CO.LTD
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DD l tl t OO i tii tiDDevelopment evelopment OOrganizationrganization
SEKISUISEKISUI PLASTICS.CO.LTDPLASTICS.CO.LTD
Introduction of EDOIntroduction of EDOIntroduction of EDOIntroduction of EDO
EDOEDO((EEPS C i M h dPS C i M h dEDOEDO((EEPS Construction MethodPS Construction Method
DDevelopmentevelopment OOrganizationrganization))DDevelopment evelopment OOrganizationrganization))Established in 1986Established in 1986Established in 1986Established in 1986 MembersMembers consistingconsisting ofof
2828 t tit ti ii2828 constructionconstruction companies,companies, 44 specializedspecialized contractors,contractors, 66 EPSEPS materialmaterial manufacturersmanufacturers
Introduction of EPS Method into JapanIntroduction of EPS Method into JapanIntroduction of EPS Method into JapanIntroduction of EPS Method into Japan
1972 W ld’ fi t EPS li d t ti1972 W ld’ fi t EPS li d t ti 1972 : World’s first EPS applied construction 1972 : World’s first EPS applied construction (Flom Bridge in Oslo )(Flom Bridge in Oslo )
19851985 ThTh Fi tFi t EPSEPS I t ti lI t ti l C fC f 19851985::TheThe FirstFirst EPSEPS InternationalInternational ConferenceConference →→MotivationMotivation ofof Japan’sJapan’s introductionintroduction ofof EPSEPS methodmethod..
CPC,Inc. tied up technically with NPRA CPC,Inc. tied up technically with NPRA (N i P bli R d Ad i i i )(N i P bli R d Ad i i i )(Norwegian Public Road Administration)(Norwegian Public Road Administration)
1972:1972:Flom Bridge in Oslo Flom Bridge in Oslo
-100
01940 1950 1960 1970 1980 1990 2000
ent
cm
-300
-200
Set
tlem
e
YearSince 1972 - 15 cm in 1995
Japan’s first construction using EPSJapan’s first construction using EPSJapan s first construction using EPSJapan s first construction using EPS
the cumulative amount 5,600,000 m3 the cumulative amount 5,600,000 m3 up to the end of 2010up to the end of 2010
P d FP d FPurposes and Forms Purposes and Forms of EPS Use (2008) of EPS Use (2008)
compared by Material used.compared by Material used.
Testing EPS blocks using RealTesting EPS blocks using Real size unitssize unitsTesting EPS blocks using RealTesting EPS blocks using Real--size unitssize units
Test Trials and R&DTest Trials and R&DTest Trials and R&DTest Trials and R&DShaking base test on right square sided EPSShaking base test on right square sided EPS
Joint ResearchJoint Research
Shaking table test light weight concrete panel Shaking table test g g p
Quality Control TestsQuality Control TestsQuality Control TestsQuality Control Tests
圧縮試験圧縮試験 燃焼性試験燃焼性試験
緊結金具の引張試験緊結金具の引張試験
Performance Warranty for EDOPerformance Warranty for EDO--EPSEPSPerformance Warranty for EDOPerformance Warranty for EDO--EPS EPS
Labelling of EDOLabelling of EDOLabelling of EDO Labelling of EDO Certificate Sticker Certificate Sticker
Performance Warranty for EDOPerformance Warranty for EDO EPSEPSPerformance Warranty for EDOPerformance Warranty for EDO--EPSEPS
Friction CharacteristicsFriction CharacteristicsFriction CharacteristicsFriction Characteristics EPS to EPSEPS to EPS μμ≧≧0 60 6 EPS to EPSEPS to EPS μμ≧≧0.60.6 EPS to Sand EPS to Sand μμ≧≧0.50.5
摩擦係数μμ
W/A(×100 )
EPS to EPSEPS to EPS EPS to SandEPS to Sand
Friction Characteristics Friction Characteristics (Effectiveness of Joint Metal)(Effectiveness of Joint Metal)
2.0 緊結金具によるせん断応力の増分
緊結金具有り緊結金具無し
1.5
(t/m
2 )
せん断応力の増分緊結金具無し
Friction +0 25up1.0
断応力τ
EPS-EPSμ=0.64
Friction +0.25up
0.5
せん断
EPS EPS μ 0.64
0.5 1 1.5 2 2.5 30上載荷重σ(t/m2
)
Heat ResistingHeat ResistingHeat Resisting Heat Resisting Heat Resisting Temperature : 80 degreesHeat Resisting Temperature : 80 degrees
Temperature and Volume Contraction of EPSLeft :EPS Right : XPS
Reaction to Chemical SubstancesReaction to Chemical SubstancesReaction to Chemical SubstancesReaction to Chemical Substances
Dissolves in Gasoline Kerosene Oil PaintDissolves in Gasoline Kerosene Oil Paint Dissolves in Gasoline, Kerosene, Oil PaintDissolves in Gasoline, Kerosene, Oil Paint
Stable to Water Paint Sea Water CementStable to Water Paint Sea Water Cement Stable to Water Paint, Sea Water, CementStable to Water Paint, Sea Water, Cement
Protection with Polyethylene SheetProtection with Polyethylene SheetProtection with Polyethylene Sheet Protection with Polyethylene Sheet
Case example from a highway by-pass in which polyethylene sheet isCase example from a highway by pass in which polyethylene sheet is applied to cover EPS in anticipation of used water penetration
Points to StudyPoints to StudyPoints to StudyPoints to Study EPS’s Compressive Stress against OverburdenEPS’s Compressive Stress against Overburden EPS s Compressive Stress against Overburden EPS s Compressive Stress against Overburden
Subsoil Settlement and EPS’s Float UpSubsoil Settlement and EPS’s Float UpEPS E b k ’ lid T d B iEPS E b k ’ lid T d B i EPS Embankment’s slide,Turnover and Bearing EPS Embankment’s slide,Turnover and Bearing CapacityCapacity
Stress Concentration on Bottom EPS Stress Concentration on Bottom EPS (of Widened (of Widened Embankment)Embankment)
Protection WallProtection Wall
EarthquakeEarthquake EarthquakeEarthquake
Study on Compressive StressStudy on Compressive StressStudy on Compressive StressStudy on Compressive Stress
Study on Subsoil SettlementStudy on Subsoil SettlementStudy on Subsoil SettlementStudy on Subsoil Settlement
P1=γt・Dvertical stress at depth D before replacement by EPS
Pe=γt1・h1+γt2・(h2+D)Pe=γt1・h1+γt2・(h2+D)vertical stress at depth D after replacement by EPS.
Excavation depth is calculated by equating P1 to Pe.
P1EPS:γt2,h2舗装:γt1,h1
p y q g
EPSによる置換厚 D 軟弱層 γt
底面 (A)
EPSによる置換厚 D
基礎地盤
γ
Study on EPS Blocks Floating UpStudy on EPS Blocks Floating UpStudy on EPS Blocks Floating UpStudy on EPS Blocks Floating Up
FloatingFloating--Resistant EPS Block Resistant EPS Block →→ Buoyancy Reduction by 60%Buoyancy Reduction by 60%Buoyancy Reduction by 60%Buoyancy Reduction by 60%
Study on Stress ConcentrationStudy on Stress ConcentrationStudy on Stress ConcentrationStudy on Stress Concentration
Problem with Slope Ground’s Bearing Capacity ?Problem with Slope Ground’s Bearing Capacity ?
Determine EPS Type in view of Stress Concentration of the Site
Study on Stress ConcentrationStudy on Stress ConcentrationStudy on Stress ConcentrationStudy on Stress Concentration
when there is likely to undergo stress when there is likely to undergo stress concentration?concentration?
Study on Stress ConcentrationStudy on Stress ConcentrationStudy on Stress ConcentrationStudy on Stress Concentration
Concrete SlabsConcrete SlabsConcrete SlabsConcrete SlabsWall TypeWall Type
4. Points of Special Note when 4. Points of Special Note when Designing & Working EPSDesigning & Working EPSDesigning & Working EPS Designing & Working EPS
Points of Special Note when executing Points of Special Note when executing constructionconstruction
EPS Block’s Creep DeformationEPS Block’s Creep DeformationEPS Block s Creep DeformationEPS Block s Creep Deformationひずみ(%)
D 20D-20
Case example of EPSCase example of EPS
10m10m HighHigh,140m,140m LongLong
Safety Confirmation of upper slabs and anchorSafety Confirmation of upper slabs and anchor headheadSafety Confirmation of upper slabs and anchorSafety Confirmation of upper slabs and anchor headhead
Floating due to heavy rainfall downpourFloating due to heavy rainfall downpourFloating due to heavy rainfall, downpourFloating due to heavy rainfall, downpour
Blocks blown off by a gust of windBlocks blown off by a gust of windBlocks blown off by a gust of windBlocks blown off by a gust of wind
Welding spark induced fire to EPS Welding spark induced fire to EPS blocks to burn outblocks to burn out
Wall panels damaged by water Wall panels damaged by water pressurepressure
Measures against wall panels’ Measures against wall panels’ deterioration or spoilingdeterioration or spoiling
Drainage ditch was dug Drainage ditch was dug along the base concretealong the base concrete
EPS Blocks dissolved by gasolineEPS Blocks dissolved by gasolineEPS Blocks dissolved by gasolineEPS Blocks dissolved by gasoline
Settlement of EPS embankment induced by the Settlement of EPS embankment induced by the back side surcharge load of soil embankment’sback side surcharge load of soil embankment’sback side surcharge load of soil embankment s back side surcharge load of soil embankment s
sinkingsinking
5 R t li ti5 R t li ti5.Recent applications5.Recent applications
Abutment earth pressure to reduce Embankment widening landslide
Anti-floating Block
Landslide areaLandslide areaLandslide areaLandslide area