نتایج جستجو برای: confined concrete

تعداد نتایج: 115914  

Journal: :Structural Concrete 2022

This article proposes a new constitutive model for the cyclic behavior of rubberized concrete confined with fiber-reinforced polymer (FRP) sheets. The is calibrated experimental results from 18 (CRuC) cylinders tested in compression. had 60% total aggregate volume replacement recycled tyre rubber. Parameters investigated include type confining material (Carbon or Aramid FRP) and number layers (...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1392

abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...

Journal: :Physical biology 2008
Ya Liu Bulbul Chakraborty

Biological macromolecules, living in the confines of a cell, often adopt conformations that are unlikely to occur in free space. In this paper, we investigate the effects of confinement on the shape of a semiflexible chain. Results of Monte Carlo simulations show the existence of a shape transition when the persistence length of the polymer becomes comparable to the dimensions of the box. An or...

Journal: :IACR Cryptology ePrint Archive 2014
Gordon Procter

In this note, we describe an error in the proof for CLRW2 given by Landecker et al. in their paper at CRYPTO 2012 on the beyond-birthday-bound security for tweakable block ciphers. We are able to resolve the issue, give a new bound for the security of CLRW2, and identify a potential limitation of this proof technique when looking to extend the scheme to provide asymptotic security.

Journal: :Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2013
Leonard A Mermel

Prolonged human spaceflight to another planet or an asteroid will introduce unique challenges of mitigating the risk of infection. During space travel, exposure to microgravity, radiation, and stress alter human immunoregulatory responses, which can in turn impact an astronaut's ability to prevent acquisition of infectious agents or reactivation of latent infection. In addition, microgravity af...

Journal: :Physical review letters 2016
Chang Liu Chao Zhou Wei Wang H P Zhang

Synthetic microswimmers are envisioned to be useful in numerous applications, many of which occur in tightly confined spaces. It is therefore important to understand how confinement influences swimmer dynamics. Here we study the motility of bimetallic microswimmers in linear and curved channels. Our experiments show swimmer velocities increase, up to 5 times, with the degree of confinement, and...

2004
Michael Backes Birgit Pfitzmann Michael Waidner

M. Naor (Ed.): TCC 2004, LCNS 2951, pages 336 352, February 2004. c © Springer-Verlag Berlin Heidelberg 2004. Abstract. We consider compositional properties of reactive systems that are secure in a cryptographic sense. We follow the well-known simulatability approach of modern cryptography, i.e., the specification is an ideal system and a real system should in some sense simulate this ideal one...

Journal: :Buildings 2023

This paper focuses on the compressive strength of Glass fiber reinforced polymer (GFRP)-confined concrete columns. Data from 114 sets GFRP-confined columns were collected to evaluate researchers’ and proposed model. A data-driven machine learning model was used investigate importance sensitivity parameters affecting strength. The results show that facilitates study confined but suffers a large ...

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