The construction industry generates a considerable amount of waste. Faced with this undesirable situation, the ready-mix concrete sector, in particular, has invested energy and resources into reusing its own waste in its production process as it works towards the goal of more sustainable construction. This study examines the feasibility of incorporating two types of concrete waste, which curren...

The susceptibility of structural concrete to early-age cracking depends on material composition, methods of processing, structural boundary conditions, and a variety of environmental factors. Computational modeling offers a means for identifying primary factors and strategies for reducing cracking potential. Herein, lattice models are shown to be adept at simulating the thermal-hygral-mechanica...

This paper presents the residual mechanical properties of concrete made with crushed bricks and clay roof tile aggregates after exposure to high temperatures. One referent mixture and eight mixtures with different percentages of replacement of natural aggregate by crushed bricks and roof tiles are experimentally tested. The properties of the concrete were measured before and after exposure to 2...

Introduction: Financial concerns deter many people from seeking orthodontic care. Fake braces replicate the real but are not functional and priced at a lower cost. These products available through illegal unregistered merchants, who use social media for advertising their products. This study aimed to analyze Arabic Twitter posts related fake braces. Methods: Tweets were collected API v2 using P...

We analyze a signature scheme described in a recent Internet Draft, and highlight a variant (based on prior work of Micali and Leighton) that offers improved concrete security.

Recycled demolished concrete (DC) as recycled aggregate (RA) and recycled aggregate concrete (RAC) is generally suitable for most construction applications. Low-grade applications, including sub-base and roadwork, have been implemented in many countries; however, higher-grade activities are rarely considered. This paper examines relationships among DC characteristics, properties of their RA and...

This paper introduces a novel type of buckling restrained braces (BRBs) called core-separated assembled BRBs (CSA-BRBs). These are comprised two single that confined by lightweight concrete-infilled tubes, which longitudinally connected continuous webs. The CSA-BRBs utilize materials more efficiently increasing the height webs to create large inner cavity, leading an economical design. predicts...

Abstract This study addresses the effectiveness of buckling restrained braces (BRBs) and viscous dampers (VDs) in dissipating seismic energy increasing performance irregular composite buildings during earthquake events. The response steel-concrete moment resisting frames 15 stories with concrete filled steel tubes (CFST) as columns beams was examined without protection devices by employing ETAB...