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Using conformity control of concrete compressive strength for construction site...
Cunha, P. J.; Aguiar, J. L. Barroso de; Oliveira, Pedro; Camões, AiresThe accomplishment of the required strength class in concrete design is very important to avoid the development of pathologies into the concrete structures. This paper intends to evaluate the design required and the obtained strength classes of the concretes produced in ten different construction sites located in the north of Portugal. The strength classes were determined testing standard specimens. In order to...
Quality of concrete : one example in the north of Portugal
Cunha, P. J.; Aguiar, J. L. Barroso de; Oliveira, Pedro; Camões, AiresThe non-quality and non-conformity of concrete, simulates the development of pathologies into the structure and consequently in coatings and masonry. So an early degradation of the buildings could be reached. The objectives of this study were he characterization of the procedures adopted for the production concrete n some works in the north of Portugal, determining he strength class required in the project. At ...
Conformidade da resistência à compressão de betões
Cunha, P. J.; Aguiar, J. L. Barroso de; Oliveira, Pedro; Camões, AiresO incumprimento das regras específicas e a consequente não conformidade dos betões em relação à normativa vigente pode originar o aparecimento de anomalias e a degradação precoce das construções. Neste contexto procedeu-se à recolha de vários provetes in situ, representativos do betão a aplicar em determinadas obras, com o objectivo de realizar um estudo estatístico com um número suficientemente vasto de result...
Analysis of compression resistance results of concretes
Cunha, P. J.; Aguiar, J. L. Barroso de; Oliveira, PedroThe non respect of the rules specified on the standardisation and the consequent no conformity of the concretes leads the appearance of pathologies, arriving to a precocious degradation of the constructions. The collection of several specimens in five sites had as na objective to accomplish an “enlarged” statistiucal study, not only with the minimum number of specimens demanded by standards. The results were a...
Durability performance of concrete bridge piers made with metakaolin and latex ...
Camões, Aires; Cruz, Paulo J. S.; Jalali, Said; Ferreira, Rui Miguel; Cunha, P. J.Requirements for assessment of structural performance based on a combination of concrete strength and reinforcement cover seems to be insufficient to provide adequate durability of reinforced and prestressed concrete structures. Under these circumstances, the construction industry is expected to generalize the use of higher quality concrete with an enhanced or even high performance. This paper summarizes the ma...
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