The lack of an accurate diagnosis has been a serious obstacle to the advancement of the anti-Trypanosoma cruzi chemotherapy and long-term infection can result in different health risks to human. PCRs are alternative methods, more sensitive than conventional parasitological techniques, which due to their low sensitivities are considered unsuitable for these purposes. The aim of this study was to...

The deterioration of concrete microstructures in freeze–thaw (F–T) cycles is the primary reason for reduction service life concrete. This paper reviews recent progress theory damage mechanisms and models F–T cycles. It a detailed review salt-freeze coupling condition, microstructure testing, evolution properties that are subjected to damage. Summarized this water phase transition; mechanism chl...

This research studies the high temperature behavior of lightweight aggregate concretes (LWAC) by providing a comprehensive study that regroups physical, thermo-mechanical and mechanical properties three different LWACs. Then these are compared to normal-weight concrete (NWC) as well those mortar phase concretes, thus, enabling us isolate identify specific behaviors aggregates (LWA). Contrary no...

A significant amount of waste glass is generated in Australia and around the world, which requires sustainable recycling. The use recycled as aggregates concrete one many options for This study investigated characteristics ordinary Portland cement (OPC) geopolymer concretes containing different proportions a partial replacement natural coarse aggregate. It was found that 28-day compressive tens...

Two-dimensional meso-scale finite element models with real aggregates are developed using images obtained by digital image processing to simulate crack propagation processes in concrete under uniaxial compression loading. The model is regarded as a three-phase composite material composed of aggregate, mortar matrix and interface transition zone (ITZ). Cohesive elements traction–separation laws ...

In current practice, the performance-based concrete mix (PBCM) approach has become quite popular because it enhances quality of materials that are fundamentally necessary for a particular situation. present study, experimental analysis is performed to determine optimal mechanical properties and microstructural characteristics sustainable development cost effectiveness. Specifically, mixture hig...

This paper aims to study the adhesion mechanism of polyvinyl alcohol (PVA) fiber within alkali-activated slag/fly ash (AASF) matrix using molecular dynamics (MD) simulation in combination with systematic experimental characterization. The PVA C-(N-)A-S-H gel different Ca/(Si+Al) and Al/Si ratios was modeled MD simulation, related adsorption enthalpy calculated explored. experimentally attained ...