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Listar por palabra clave "High-strength concrete"

Mostrando ítems 1-9 de 9

A numerical model with varying passive confinement for circular and elliptical concrete-filled steel tubular columns

Lacuesta Carrión, César Damián; Romero García, Manuel Luis; Lapuebla-Ferri, Andrés; Adam Martínez, José Miguel (Editorial Universitat Politècnica de València, 2018-06-05)

[EN] In this work, a non-linear 3D numerical model to study concrete-filled tubular (CFST) columns is presented. The numerical model is capable to consider the passive confinement that occurs in the concrete core of CFST ...
An experimental study of steel fiber-reinforced high-strength concrete slender columns under cyclic loading

Caballero Morrison, Karen Elena; Bonet Senach, José Luís; Navarro-Gregori, Juan; Serna Ros, Pedro (Elsevier, 2013-12)

Structural engineers usually limit the use of HSC columns to seismic active zones because of their brittle behavior in comparison with NSC, even though it presents advantages both in terms of mechanics and durability. A ...
Assessment of transmission length of prestressing strands according to fib Model Code 2010

Dang, Canh N.; Hale, W. Micah; Martí Vargas, José Rocío (Elsevier, 2017)

[EN] The use of 18-mm prestressing strands is advantageous in the construction of long-span bridges. Transmission length is a significant parameter in the design of pretensioned concrete members. This study provides a ...
Cm-factor for RC slender columns under unequal eccentricities and skew angle loads at the ends

Da Costa Lino Leite, Luiz Carlos; Bonet Senach, José Luís; Pallarés Rubio, Luis; Miguel Sosa, Pedro (Elsevier, 2014)

Reinforced concrete slender columns, in general, are subjected to a non-uniform bending moment law, due to the occurrence of unequal eccentricities and skew angles at the ends. Design codes suggest calculating an equivalent ...
Compressive performance of 50 MPa strength concrete-filled square and circular tube (CFT) columns using recycled aggregate

Choi, Sung-Mo; Choi, Won Ho; Lee, Kangseok; Ryoo, Jae-Yong; Kim, Sunhee; Park, Yong-Pil (Editorial Universitat Politècnica de València, 2018-06-05)

[EN] Recycled aggregate is an environmentally self-sustainable solution that can reduce construction waste and replace natural aggregates. However, there is a disadvantage in concrete such as initial strength drop and ...
Experimental behaviour of very high-strength concrete-encased steel composite column subjected to axial compression and end moment

Huang, Zhenyu; Huang, Xinxiong; Li, Weiwen; Zhou, Yingwu; Sui, Lili; Liew, J. Y. (Editorial Universitat Politècnica de València, 2018-06-05)

[EN] A type of cost-effective and very high strength concrete (VHSC) with 28-day compressive strength of 100-150 MPa is developed for applications in concrete-encased steel composite column constructions. This paper ...
Influence of Slenderness on High-Strength Rectangular Concrete-Filled Tubular Columns with Axial Load and Nonconstant Bending Moment

Hernández Figueirido, David; Romero, Manuel L.; Bonet Senach, José Luís; Montalva Subirats, José Miguel (American Society of Civil Engineers, 2012)

Forty-nine experimental tests were conducted on rectangular and square tubular columns filled with high-strength concrete (f'(c) 590 MPa) subjected to axial load and a nonconstant bending moment distribution. The test ...
Optimization of high-performance concrete post-tensioned box-girder pedestrian bridges

Yepes, V.; Pérez-López, E.; García-Segura, Tatiana; Alcalá-González, Julián (WITPress, 2019)

[EN] This paper deals with the economic optimization of high-performance post-tensioned concrete box-girder pedestrian bridges. To this end, a program analyzes and evaluates the structural restrictions following Spanish ...
Spacing requirements of 0.7 in. (18 mm) diameter prestressing strands

Dang, C.N.; Floyd, R.W.; Hale, W.M.; Martí Vargas, José Rocío (2016)

[EN] The use of 0.7 in. (18 mm) diameter strands for pretensioned concrete girders is advantageous when increasing the flexural capacity and extending girder spans. The current codes have no design guidelines for predicting ...