2 research outputs found

    Strength properties of rice husk ash concrete under sodium sulphate attack

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    The use of pozzolanic materials in concrete provides several advantages, such as improved strength and durability. This study investigated the strength properties of rice husk ash (RHA) concrete under severe durability (sodium sulphate attack). Four RHA replacement levels were considered in the study: 10%, 20%, 30%, and 40% by weight of cement. The durability performance of the RHA blended cement exposed to sodium sulphate solution was evaluated through compressive strength, reduction in strength, and weight loss. Test results showed that RHA can be satisfactorily used as a cement replacement material in order to increase the durability of concrete. Concrete containing 10% and 20% of RHA replacements showed excellent durability to sulphate attack. The results also indicate that the amount of Ca(OH)2 in the RHA blended cement concrete was lower than that of Portland cement due to the pozzolanic reaction of RH

    Negócio electrónico na medição de seguros - estudo de caso

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    A mediação de seguros Ă© uma actividade complexa e de grande valoracrescentado no negĂłcio segurador pois os mediadores operam como consultores de seguros, tentando obter, apartir de um vasto leque de soluçÔes, aquelas que apresentam as melhores condiçÔes para satisfazer asnecessidades dos seus clientes. Para os mediadores operarem de uma forma eficaz e eficiente, necessitam deuma grande conectividade e articulação com todas as entidades que compĂ”em o negĂłcio: clientes, seguradoras e bancos, entre outras. O presente trabalho investiga, atravĂ©s de um estudo de caso, atĂ© que ponto o negĂłcio de um determinado mediador se integra com as referidas entidades,especialmente com uma seguradora, utilizando uma plataforma de negĂłcioelectrĂłnico assente em tecnologias proporcionadas pela Internet. ABSTRACT: Insurance mediation is a complex and great value added activity in theinsurance business because mediators operate as insurance consulters tryingto obtain, from a vast array of solutions, those that present the best conditionsfor their clients’ needs. For mediators to operate in an effective and efficient way, they need a greatconnectivity and articulation with all entities that compose the business: clients,insurance companies and banks, among others. The current work investigates, using acase study, how far one particular mediator can integrate with the above mentioned entities, specially with oneinsurance company, using an electronic business platform built on Internettechnologies
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