Search
Now showing items 1-10 of 1374
Creep and shrinkage of high-performance lightweight concrete
(AMER CONCRETE INST, 2004)
Two high-performance lightweight concrete (HPLC) mixtures with average compressive strengths of 68.5 and 75.4 MPa (9950 and 10,950 psi) were developed. Their air-dry unit weights were 1875 and 1905 kg/m(3) (117 and 119 ...
High-Strength Concrete Masonry Walls under Concentric and Eccentric Loadings
(Asce-amer Soc Civil Engineers, 2018-06-01)
Masonry walls and columns are common structural members that typically resist compressive loads, with a number of such members being required to resist combined axial load and out-of-plane bending due to direct out-of-plane ...
Autocicatrização do concreto com diferentes tipos de cimentos em interação com catalizador cristalino
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia CivilUTFPR, 2019-06-26)
In a concrete structure, there are microcracks and cracks that have expected or unexpected characteristics. These microcracks may will be the way to external agents with degradation effect. For this reason, there is a need ...
Modeling portland blast-furnace slag cement high-performance concrete
(AMER CONCRETE INST, 2004)
This research focused on portland blast-furnace slag cement high-performance concrete (HPC), with specified 28-day compressive strengths between 60 to 110 MPa. Compressive and flexural strength, elastic modulus, abrasion ...
Validation of Performance-Dependent Failure Criterion for Concretes
(American Concrete Institute, 2011-05)
This paper focuses on the reformulation of the internal functions of the performance-dependent failure criterion (PDFC) for concrete, proposed by the authors, and its validation for different concrete qualities and stress ...
Avaliação da eficiência do ensaio de aderência aço-concreto para estimativa da resistência à compressão axial do concreto
(Universidade Tecnológica Federal do ParanáPato Branco, 2014-07-30)
In the construction sector the quality control of products and services is done through supervision of works and testing of materials that require, in most cases, modern equipment and qualified professionals, where the ...
Concrete Containing Natural Pozzolans: New Challenges for Internal Curing
(ASCE-AMER SOC CIVIL ENGINEERS, 2012)
Natural pozzolans (NP) have proven to be an effective supplementary cementitious material; however, the replacement of ordinary portland cement (OPC) with NP might increase the autogenous and drying shrinkage of concrete. ...
An experimental study of steel fiber-reinforced high-strength concrete slender columns under cyclic loading
(2012-08-10)
Structural engineers usually limit the use of HSC columns to seismic active zones because of their britle behavior in comparison with NSC, even though it presents advantages both in terms of mechanics and durability. A ...
Temperature effects on failure behavior of self-compacting high strength plain and fiber reinforced concrete
(Elsevier, 2018-03)
This work analyzes the effect of temperature on the mechanical behavior up to failure of self-compacting high strength concrete specimens when subjected to three different stress paths, corresponding to the uniaxial ...