CiviTest

1st “EcOffShorBE” Workshop

​The 1st Workshop of the “EcOffShorBE” group will be held in the Azurém Campus of the University of Minho .EcOffshorBE (Eco Offshore Built Environment) is formed by the CiviTest company (leading entity) and the University of Minho (represented by the Departments of Biology, Industrial Electronics, Polymer Engineering and Civil Engineering). This new collaborative structure aims to strengthen CiviTest’s and UMinho’s internal competencies in…

A new strengthening technique for increasing the load carrying capacity of rectangular reinforced concrete columns subjected to axial compressive loading

In this work, a new technique for the efficient confinement of reinforced concrete (RC) columns of rectangular crosssection is described and its effectiveness is assessed experimentally. This technique is based on the concept of applying strips of carbon fiber reinforced polymer (CFRP) wet layup sheets with a certain prestress level using a mechanical device. The influence of the cross-section aspect…

Participation in the “10th International Conference Fibre Concrete 2019”

CiviTest participated in the “10th International Conference Fibre Concrete 2019”, held in Prague, Czech Republic, between 18 and 20 September 2019, by presenting the paper: “Appraisal of MC2010 shear resistance approaches coupled with a residual flexural strength prediction model”. The authors of this paper are: Tiago Valente (oral speaker), Joaquim Barros, Bernardo Moraes-Neto and Youssef Moussa.  

Appraisal of MC2010 shear resistance approaches coupled with a residual flexural strength prediction model

In the present work the predictive performance of the two approaches proposed by Model Code 2010 for the evaluation of the shear capacity of fiber reinforced concrete (FRC) elements flexurally reinforced with conventional steel bars is assessed considering a database (DBs) constituted by 80 FRC beams do not including conventional transverse reinforcements. The accuracy of these shear models is evaluated…

Ensaio à rotura de protótipo de edifício em lajes de betão auto-compactável reforçado com fibras

O presente artigo descreve a investigação experimental realizada para avaliar as potencialidades da utilização de betão auto-compactável reforçado com fibras de aço (BACRFA) na construção de lajes fungiformes de edifícios de habitação e comércio, onde as fibras são o único reforço aplicado nas lajes. Para tal foi construído um protótipo deste tipo de edifícios, à escala 1:4, e ensaiado para condições de…

PhD Viva of Tiago Valente

On the 5th of July, at 10:30 AM, the PhD student Tiago Daniel dos Santos Valente (staff member of CiviTest) will defend his thesis. Thesis title: “Advanced tools for design and analysis of fiber reinforced concrete structures”. Location: Sala de Atos – Campus de Azurém, Guimarães Supervisors: Joaquim António Oliveira de Barros; Lúcio Abel Pereira Lourenço More information available at: www.eng.uminho.pt/pt/divulgacaoinstitucional/provasacademicas

Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres

The use of thin cement based panels reinforced with relatively high content of Recycled Steel Fibres (RSF) for the shear strengthening of Reinforced Concrete (RC) beams is investigated in the present work. The mechanical properties of this Recycled Steel Fibre Reinforced Mortar (RSFRM) are characterised. The panels are produced by using a mixing technique similar to the one used in…

Desenvolvimento de painel sanduíche multifuncional para a reabilitação sustentável de edifícios porticados de betão armado: caracterização de componentes

Esta comunicação apresenta um trabalho de investigação dedicado ao desenvolvimento de um painel sanduíche compósito multifuncional concebido para a reabilitação estrutural e térmica de edifícios porticados de betão armado construídos em Portugal a partir da década de 1960 e até meados da década de 1980. Este painel é composto essencialmente por três componentes que visam assegurar a multifuncionalidade pretendida, nomeadamente:…

Influência da corrosão no comportamento pós-fendilhação do betão reforçado com fibras de aço recicladas

O betão reforçado com fibras de aço recicladas (BRFAR) possui elevadas potencialidades técnicas, ambientais e económicas para ser utilizado em aplicações estruturais, constituindo uma solução sustentável que promove a eficiência e durabilidade das estruturas e a sustentabilidade ambiental. A investigação da durabilidade do BRFAR é ainda escassa, nomeadamente, sobre os efeitos da corrosão das fibras no comportamento pré- e pós-fendilhação…

Development of multifunctional sandwich panels for integrated rehabilitation of RC-buildings: characterization of the components

This research work deals with the development of a sustainable multifunctional composite sandwich panel for reinforced concrete (RC) frame buildings built in Portugal until the mid-1980s, which require structural and thermal-comfort rehabilitation. The sandwich panel, aimed specifically for interventions on building envelopes (refurbishment of building facades), is characterized by three main components: (i) thin outer concrete layers reinforced with recycled…

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