oladis presentación duracon 2006

8/9/2019 Oladis Presentacin DURACON 2006

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SUBPROGRAM XVSUBPROGRAM XV

CORROSION AND ENVIRONMENTALCORROSION AND ENVIRONMENTAL

IMPACT ON MATERIALSIMPACT ON MATERIALS

InternationalInternational CoordinatorCoordinator :: Dr. LeonardoDr. Leonardo UllerUller/Brasil (1988/Brasil (1988--

2001); Dra.2001); Dra. CarmenCarmen Andrade/Andrade/EspaEspaaa (Since 2002)(Since 2002)

EFFECT OF THE ENVIRONMENT ONEFFECT OF THE ENVIRONMENT ONREINFORCED CONCRETE DURABILITY INREINFORCED CONCRETE DURABILITY IN

IBEROAMERICAN COUNTRIES:IBEROAMERICAN COUNTRIES: DURACON PROJECT/CYTEDDURACON PROJECT/CYTED

InternationalInternational CoordinatorCoordinator : Prof.: Prof. OladisOladis T. deT. de RincRincnn

DirectorDirector ofofCentro deCentro de EstudiosEstudios dde Corrosie Corrosinn,,

FacultadFacultad dede IngenierIngenieraa ddee lala Universidad del Zulia.Universidad del Zulia.

MaracaiboMaracaibo--VenezuelaVenezuela

Jo r n a d a s d e

DURA B I L I DAD

To unify criteria, knowledge, experiences. among

Iberoamerican Specialists

Argentin

a BoliviaBraz

il

Colombia

CostaRi

ca

Spain

Mxico

Chile

Portugal

Uruguay

Vene

zuela

PROJECT XV.3PROJECT XV.3

DURACONDURACON

ARGENTINA

BRAZIL

COLOMBIA

CHILE

COSTA RICA

SPAIN

MEXICO

PORTUGAL

URUGUAY

VENEZUELA

BOLIVIA


DURACONDURACON

TheThe aimaim ofof thisthis projectproject is tois to characterizecharacterize thethe

durabilitydurability ofof concreteconcrete exposedexposed tto prevailingo prevailing

environmentalenvironmental conditionsconditions inin IberoIbero--AmericaAmerica,,

implementingimplementing naturalnatural testtest stationsstations inin eacheach countrycountry

inin atat leastleast twotwo sitessites withwith differentdifferent atmospheresatmospheresoneone

in a marinein a marine environmentenvironment,, anotheranother inin anan urbanurban

environmentenvironment..

RED DURACONRED DURACONPROJECT XV.3PROJECT XV.3

DURACONDURACON


DURACONDURACON

MechanicalMechanical andand physicalphysical characterizationcharacterization,, duringduring

fabricationfabrication andand 2828 daysdays thereafterthereafter,, ofof concreteconcrete withwith thethe

samesame mixturemixture asas thethe onesones thatthat willwill bebe exposedexposed inin thethenaturalnatural testtest stationsstations..

ExposingExposing concreteconcrete specimensspecimens,, withwith//withoutwithout reinforcementreinforcement

inin thethe naturalnatural testtest stationsstations for afor a periodperiod ofofupup to fourto four yearsyears..


DURACONDURACON


DURACONDURACON

EvaluatingEvaluating climaticclimatic andand environmentalenvironmental parametersparameters

inin thethe exposureexposure sitessites duringduring thethe testtest periodperiod onon thethe

basisbasis ofof thethe methodologymethodology establishedestablished inin thethe ISOISO

Standards forStandards for thethe classificationclassification ofof atmosphericatmosphericaggressivenessaggressiveness..

DeterminingDetermining thethe potentialitypotentiality andand probabilityprobability inin

concreteconcrete toto initiateinitiate reinforcementreinforcement corrosioncorrosion byby

carbonationcarbonation,, dependingdepending onon thethe specificspecific environmentenvironment

wherewhere thethe probesprobes areare exposedexposed..


DURACONDURACON


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DURACONDURACON


DURACONDURACON

TypeType ofofAggregateAggregate :: CrushedCrushed 13 mm13 mm SiliceousSiliceous..

TypeType ofofSandSand:: QuartzQuartz--likelike..

PlastifierPlastifier:: SikaSika VZVZ PlastimentPlastiment, MBT, MBT PozzolitePozzolite oror similar,similar,

for w/c = 0.45.for w/c = 0.45.

MoldMold:: MetallicMetallic..

CuringCuring: In: In wetwet chamberchamber oror immersiimmersinn limelime waterwater..

MixtureMixture design indesign in accordanceaccordance withwith::

w/c = 0,45w/c = 0,45 andand 0.65. For w/c = 0.45 use a0.65. For w/c = 0.45 use a minimumminimum ofofcementcement, 400, 400

Kg/mKg/m33 ofofconcreteconcrete andand for w/c = 0.65 usefor w/c = 0.65 use minimumminimum ff cc = 210= 210

KgKg/cm/cm22..

MNZ = 13 mmMNZ = 13 mm

SettlingSettling = 10= 101 cm.1 cm.

A. Type of Probe: Cylindrical 15 x 30 cm.

Compressive strength (ASTM Standard C 39 ). At two ages (28 and90 days).

Indirect tensile strength (ASTM Standard C 496) Elasticity module (ASTM Standard C 469)

B. Type of Probe: In accordance with each particular test.

Resistivity (on saturated probe/ DURAR Manual) Total Absorption and Total Porosity (ASTM Standard C 642) Capillar Absorption (Fagerlund technique, express K, , ). Prepare

15x15x15 cm cubes andextract 10 cm x 5 cm-high cores. Permeability to chlorides (ASTM C 1202).


DURACONDURACON

CHEMICAL COMPOSITION OF PORTLAND I CEMENT USED

6.5012.5011.0064.002.500.430.330.9562.503.855.0021.50COSTA RICA

10.727,.618.2654.992.100.410.8564.392.954.4820.27VENEZUELA

8.3910.4119.8750.612.680.980.111.8862.173.425.3520.26PORTUGAL

3.5013.8020.5054.02.320.530.161.5163.374.544.2221.38MEXICO

0.4012.483.800.650.111.8565.844.102.3720.20SPAIN

6.611.416.066.02.20.400.202.762.03.304.6021.50CHILE

5.4511.4324.4949.211.930.220.191.5162.223.754.4620.48COLOMBIA

(2)

5.7311.3213.0662.76COLOMBIA

(1)

3.021.110.1957.32.795.1318.8BRAZIL

7.709.8219.2357.522.102.180.821.5147.682.686.7633.14BOLIVIA

-.--.--.-1.820.810.101.3861.524.983.8821.90ARGENTINA

C3AC4AFCsSC3SSO3K2ONa2OMgOCaOFe2O3Al2O3SiO2CHARACTER-

ISTICS

COUNTRY

1.64 10-47.603.71 1070.008215.256.7139.6533.82VENEZUELA

0.002013.1153.7548.75PORTUGAL

1.67 10-58.523.64 1070.014213.956.353.00MEXICO

9.80 10-55.2810.50 1070.00549.994.7059.3243.24SPAIN

1.42 10-42.593.55 1070.00488.952.4444.7043.60CHILE

9.70 10-57.4010.70 1070.00669.113.7953.2052.33COLOMBIA (2)

8.10 10-57.4015.26 1070.00608.213.3965.1762.02COLOMBIA (1)

4.00 10-55.1061.80 1070.00216.62.8044.3039.80ARGENTINA

28 d28 d28 d28 d28 d28 d90 d28 dTime

Capillary

Sorption

S

(m/s1/2)

Effective

Porosity

(%)

Resistance

towater

penetration

m (s/m2)

Capillary

Abso rptio n

(k/m2s1/2)

Total

Porosity

(%)

Total

Absor ption

(%)

Compression

Resistance(MPa)

CHARACTERISTICS

COUNTRY

CHARACTERISTICS OF THE CONCRETES PREPARED (w/c =0.45)

1,65 10-415,413,74 1070,025319,158,9330.826.8VENEZUELA

0,007712,637,032,75PORTUGAL

1.82 10-411.023.01 1070.02116.457.5532,3MEXICO

1,30 10-47,156,10 1070,009113,393,9034,3627,00SPAIN

2,11 10-416,132,25 1070,034117,025,2126,019,8CHILE

1,49 10-412,14,50 1070,008511,794,9130,2828,01COLOMBIA (2)

1,17 10-412,07,28 1070,012211,224,6638,5036,10COLOMBIA (1)

8,5 10-57,113,9 1070,060311,45,127,322,3ARGENTINA

28 d28 d28 d28 d28 d28 d90 d28 dTime

Capillary

Sorption

S

(m/s1/2)

Effective

Porosity

(%)

Resistance

towater

penetration

m (s/m2)

Capillary

Abso rptio n

(k/m2s1/2)

Total

Porosity

(%)

Total

Absor ption

(%)

Compression

Resistance

(MPa)

CHARACTERISTICS

COUNTRY

CHARACTERISTICS OF THE CONCRETES PREPARED (w/c =0.65)


DURACONDURACON

1212 specimensspecimens forfor eacheach stationstation, 3/, 3/conditioncondition..

15x15x30 cm prismatic specimens with no reinforcement. 15x15x30 cm prismatic specimens with 6 reinforcements with

cover thicknesses of 1.5; 2.0; 3.0 cm.

Note: Meteorological and chemical parameters will be evaluated

monthly (ISO standards). Evaluation of the electrochemical

parameters (Ecorr, icorr, ) will be done in the same way. Chemical

analysis of the samples is being done annually, cutting a 5-cm thick

slice off the probes with no reinforcement. Carbonation will be

measured at the face of the cut. For Cl- analysis, a 5-cm core will

be taken outof thesample, at 3 cm fromthe lower border.


DURACONDURACON


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DURACONDURACON

FREE FACE

DIRECTION OF CASTING

DIRECTION OF

PREVALING WIND

MaracaiboMaracaibo/Venezuela/Venezuela ElEl PoPoss/Costa Rica/Costa Rica

Santiago/ChileSantiago/ChileElEl PardoPardo/Uruguay/Uruguay

w/c = 0.65

w/c = 0.45


DURACONDURACON

1.1. EnvironmentalEnvironmental HumidityHumidity..

2.2. ChlorideChloride ConcentrationConcentration..

3. Sulfate3. Sulfate ConcentrationConcentration..

4. Wind4. Wind PatternsPatterns..

5.5. PrecipitationPrecipitation..

6.6. TemperatureTemperature..

7.7. InsolationInsolation..

8. CO8. CO22 ConcentrationConcentration..

9.9. AnyAny othersothers thatthat maymay bebe consideredconsidered..


DURACONDURACON


DURACONDURACON

Test Stations


DURACONDURACON

Andrs Torres, Pedro CastroMexico

Ruby Mejas de Gutirrez, Silvio Del VastoColombia

Ericka Saborio, Catalina VillalobosCosta Rica

Isabel Martnez, Marta CastelloteSpain

Manuela Salta, Ana P. De MeloPortugal

Gerardo Rodrguez, Marit DerrgibusUruguay

Miguel Snchez, Emilia de PartidasVenezuela

Juan Carlos MontenegroBolivia

Maryangela Geimba De Lima, Paulo HeleneBrazil

Mirta Barboza, Edgardo IrassarArgentina

NATIONAL COORDINATORSCOUNTRY


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CategoryTOW


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Puerto Cabello/Venezuela Vigo/Espaa

Valparaiso/Chile

Estacin LaPaloma

Estacin LaPaloma

La Paloma/Uruguay

012345678

910

Valpa

raiso

Buenaventura

_M1

Buenaventura

_M2

Vigo

Prog

reso

Veracruz

Cabo

Raso_M1

Cabo

Raso_M2

LaPalo

ma

LaVoz

P.Cabe

llo

ftd h KCO2 K Cap HR Temp p luvia l Cl

43.652.362.0243.2433.8263.9fck(MPa)

82.889.289.269.090.074.0RH (%)

6.65.455.730.4010.728.39C3A

2.50x 10710.7 x 10715.26 x 10710.5x 1073.71 x 107m (s m-2)

13.407.407.405.287.60 (%)

0.00270.00660.00600.00540.00820.0020k (kg m-2 s -1/2)

w / c = 0,45

500658165811267,6398109Rain

(mm/year)

Environment

387400400400414.3400

19.2629.029.0156.21166.321392Cl - (mg/m2 d)

15.325.925.915.829.3517.0Temp. ( C)

0.700.890.890.310.670.46f()

Cement Content (Kg/cm3)

CHILE

(Valparaiso)

COLOMBIA (2)

(Buenaventura)

COLOMBIA (1)

(Buenaventura)

SPAIN

(Vigo)

VENEZUELA

(La Voz)

PORTUGAL

(Cabo Raso)

COUNTRY

(STATION)

Potentiality and Probability of Reinforcement

Corrosion onset in Concrete by Chloride PenetrationPROJECT XV.3PROJECT XV.3

DURACONDURACON

Venezuelafc

k= 33.82

C3A = 10.72

Cl- = 166.52 mg m-2 d-1

f() = 0.67

Rain= 398

= 7.22

Spainfc

k= 43.24

C3A = 0.40

Cl- = 156 mg m-2 d-1

f() = 0.31

Rain= 1267.6

= 5.28

Portugalfc

k= 63.90

C3A = 8,39

Cl- = 1392 mg m-2 d-1

f() =0.46

Rain= 109

Chilefc

k= 43.6

C3A = 6.6

Cl-

= 19.26 mg m-2

d-1

f() = 0.7

Rain= 500

= 13.4

Colombia (1)fc

k= 62.02

C3A = 5.73

Cl- = 29 mgm-2 d-1

f() = 1

Rain= 6581

= 10.0

REBAR CORROSION

PROBABILITY BY CHLORIDES

DIFFUSION (w/c=0.45)

Colombia (2)fc

k= 52.3

C3A = 5.45

Cl- = 29 mgm-2 d-1

f() = 0.89

Rain= 6581

= 10.0


DURACONDURACON


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