WAL*MARTWAL*MARTIsos postensados

WAL*MARTWAL*MART

195419541954 Creation of a post-tensioning department by Losinger - VSL = Vorspann System LosingerCreationCreation of a postof a post--tensioning department by Losingertensioning department by Losinger -- VSL =VSL = Vorspann System LosingerVorspann System Losinger

195619561956 First application of the VSL Post-Tensioning SystemFirstFirst application ofapplication of thethe VSL PostVSL Post--Tensioning SystemTensioning System

196019601960 First Licence Agreement with Universale Bau-AG in AustriaFirstFirst Licence AgreementLicence Agreement with Universalewith Universale BauBau--AG inAG in AustriaAustria

196619661966 Founding VSL Prestressing (Aus.) PtyFoundingFounding VSLVSL PrestressingPrestressing ((AusAus.).) PtyPty

198319831983 Founding of VSL Thailand LtdFoundingFounding of VSLof VSL Thailand LtdThailand Ltd

196519651965 Development and first commercial application of the VSL Strand PT SystemDevelopmentDevelopment andand firstfirst commercial application ofcommercial application of thethe VSLVSL StrandStrand PTPT SystemSystem

HISTORYHISTORY

199019901990 Acquisition of the Losinger Group by BouyguesAcquisition ofAcquisition of the Losinger Group bythe Losinger Group by BouyguesBouygues

199219921992 Launching of the Specialist Contractor concept - Strategy of management control of licenseeLaunchingLaunching ofof the Specialist Contractorthe Specialist Contractor concept concept -- StrategyStrategy of managementof management controlcontrol ofof licenseelicensee

199719971997 Creation of VSL China, VSL Argentina, VSL Mexico, VSL Middle EastCreationCreation of VSL China, VSLof VSL China, VSL ArgentinaArgentina, VSL Mexico, VSL Middle, VSL Mexico, VSL Middle EastEast

198519851985 Grouping of VSL Entities under the VSL Group banner GroupingGrouping of VSLof VSL Entities under theEntities under the VSLVSL Group banner Group banner

198919891989 Acquisition of the Stronghold Group by BouyguesAcquisition ofAcquisition of the Stronghold Group bythe Stronghold Group by BouyguesBouygues

199819981998 Creation of VSL South Africa, VSL Polska, VSL BeneluxCreationCreation of VSLof VSL South AfricaSouth Africa, VSL , VSL PolskaPolska, VSL , VSL BeneluxBenelux

195419541954 Creation of a post-tensioning department by Losinger - VSL = Vorspann System LosingerCreationCreation of a postof a post--tensioning department by Losingertensioning department by Losinger -- VSL =VSL = Vorspann System LosingerVorspann System Losinger

195619561956 First application of the VSL Post-Tensioning SystemFirstFirst application ofapplication of thethe VSL PostVSL Post--Tensioning SystemTensioning System

196019601960 First Licence Agreement with Universale Bau-AG in AustriaFirstFirst Licence AgreementLicence Agreement with Universalewith Universale BauBau--AG inAG in AustriaAustria

196619661966 Founding VSL Prestressing (Aus.) PtyFoundingFounding VSLVSL PrestressingPrestressing ((AusAus.).) PtyPty

198319831983 Founding of VSL Thailand LtdFoundingFounding of VSLof VSL Thailand LtdThailand Ltd

196519651965 Development and first commercial application of the VSL Strand PT SystemDevelopmentDevelopment andand firstfirst commercial application ofcommercial application of thethe VSLVSL StrandStrand PTPT SystemSystem

HISTORYHISTORY

199019901990 Acquisition of the Losinger Group by BouyguesAcquisition ofAcquisition of the Losinger Group bythe Losinger Group by BouyguesBouygues

199219921992 Launching of the Specialist Contractor concept - Strategy of management control of licenseeLaunchingLaunching ofof the Specialist Contractorthe Specialist Contractor concept concept -- StrategyStrategy of managementof management controlcontrol ofof licenseelicensee

199719971997 Creation of VSL China, VSL Argentina, VSL Mexico, VSL Middle EastCreationCreation of VSL China, VSLof VSL China, VSL ArgentinaArgentina, VSL Mexico, VSL Middle, VSL Mexico, VSL Middle EastEast

198519851985 Grouping of VSL Entities under the VSL Group banner GroupingGrouping of VSLof VSL Entities under theEntities under the VSLVSL Group banner Group banner

198919891989 Acquisition of the Stronghold Group by BouyguesAcquisition ofAcquisition of the Stronghold Group bythe Stronghold Group by BouyguesBouygues

199819981998 Creation of VSL South Africa, VSL Polska, VSL BeneluxCreationCreation of VSLof VSL South AfricaSouth Africa, VSL , VSL PolskaPolska, VSL , VSL BeneluxBenelux

WAL*MARTWAL*MARTIsos postensados

FundadaFundada

+/+/--200 200

CuenCuenexperiencia del Grupo experiencia del Grupo

Del Del orden orden

en en MMééxicoxico en en diciembrediciembre de 1996de 1996

EmpleadosEmpleados

tata con con el respaldo el respaldo de de mmáás s de 40 de 40 aañños os de de VSLVSL

de 40 de 40 ingenieros ingenieros y y ttéécnicos especialistascnicos especialistas

WAL*MARTWAL*MARTentajas de Utilización

Reducción de la cantidad de juntas de dilatación y/o contracción.

Incremento de la capacidad de carga sin incremento considerable de espesor

Disminución del acero de refuerzo convencional ( varillas corrugadas).

Incremento de la resistencia a la abrasión generada por las ruedas de ciertos equipos de carga.

Reducción considerable de los agrietamientos debidos a la contracción por fraguado o a los cambios de temperatura.

Mejora de la impermeabilidad de los pisos

Menores costos de construcción y de mantenimiento con los pavimentos convencionales de concreto armado.

WAL*MARTWAL*MARTrocedimiento Constructivo

VACIADO DE CONCRETO ESPECIAL

TERRACERIA BASE DE CALIDAD ADECUADA

CAMA DE ARENA (REDUCE FRICCIÓN)

2 CAPAS DE POLIETILENO

COLOCACIÓN DE SILLETAS

INSTALACION DE PRESFUERZO

FRONTERAS DE COLADO

TERMINADO DE PISO

CURADO

WAL*MARTWAL*MARTontrol de Agrietamiento

Piso tradicional(Fisuramiento temprano por contracción)

Fuerzas de Tensado

(Reducción hasta un 90% del fisuramiento)Piso Postensado

Fuerzas de Tensado

Tensado Gradual Tensado Gradual

WAL*MARTWAL*MARTistema CP+ (Encapsulado)

SISTEMA MONOTORON NO-ADHERIDO

PROTECCIÓN PARA AMBIENTES CORROSIVOS

WAL*MARTWAL*MARTnstalación

Preparación de anclajes

Colocación de Presfuerzo

WAL*MARTWAL*MARTisos postensados

Secuencias de colado

Vaciado de concreto especial Cemex

WAL*MARTWAL*MARTuesta en servicio

Tensado de Cables

Cables Tensados

WAL*MARTWAL*MARTIseño (Criterios)

FricciFriccióónn

TemperaturaTemperatura

CargasCargas de de DiseDiseññoo

Modulo de Modulo de RupturaRuptura

PresfuerzoPresfuerzo

CompresiCompresióónn > > TensiTensióónn

EstadoEstado InicialInicial ((crcrííticotico))

WAL*MARTWAL*MARTeferencias

WAL*MARTWAL*MARTeferencias

Pulido de Postenpiso

WAL*MARTWAL*MARTeferencias

Piso Terminado

WAL*MARTWAL*MARTapacidad de Carga

Capacidad de carga