Published in Frontiers in Materials
The chloride migration coefficient (CMC) of concrete is crucial for evaluating its durability. This study develops ensemble models to predict the CMC of concrete, addressing the limitations of traditional, labor-intensive laboratory tests. We developed three ensemble models: an inverse variance-based model, an Artificial Neural Network (ANN)-based ...
Published in Nanotechnology Reviews
Micro-nanobubbles (MNBs) are tiny bubbles of water used in various industries. The production methods and properties of concrete containing MNBs and the applications of MNBs in different industries are reviewed. Then, the effect of MNBs on the properties of fresh and hardened concrete is described. Next, we assessed the advantages and disadvantages...
Published in Frontiers in Materials
Sawdust, a solid waste generated during stone processing, poses a serious threat to the environment with its untreated accumulation. This paper first analyzes the chemical composition and physical properties of sawdust, and discusses its mechanism of action in cement mortar. By systematically optimizing the blending ratio and modification method of...
Published in Journal of The Electrochemical Society
We performed a systematic experimental and theoretical analysis of the oxygen reduction reaction (ORR) activity and durability of Pt/Ir catalysts featuring different platinum shells. Four Pt/Ir catalysts with different platinum monolayers (ML) on an iridium core were synthesized. The nanostructure and composition of the catalysts were studied using...
Published in Materials Research Express
Natural fiber composites provide an environmentally favorable and sustainable alternative to traditional materials, greatly reducing environmental impact. Aging tests are required to evaluate the long-term mechanical performance and durability of these composites under varied situations, ensuring their dependability and safety over time. This study...
Published in Materials Research Express
The impact of multi-mineral admixtures on the sturdiness of ultra-high performance concrete (UHPC). In this study on the premise that multi-mineral admixtures can be utilized in UHPC, we optimized the percentage of three admixtures(limestone powder,slag, and pumice powder) that can replace cement using the Box-Behken design response surface method,...
Published in Frontiers in Physiology
Purpose To compare acute physiological responses and perceived training stress between one long and two short time- and intensity-matched sessions of moderate-intensity training in endurance athletes. Methods Fourteen male endurance athletes (VO2max: 69.2 ± 4.2 mL·min−1·kg−1) performed one 6 × 10-min interval session (SINGLE) and two 3 × 10-min int...
Published in E3S Web of Conferences
As the construction industry is moving towards sustainable infrastructure, the need for green construction materials has gained importance in current scenario. Geopolymer concrete is considered to be an alternate to conventional concrete with cement as cement production is considered to emit more greenhouse gases into the atmosphere. This work has ...
Published in Science and Engineering of Composite Materials
Published in E3S Web of Conferences
The article theoretically compares differences between two main modern milling machines manufactured in foreign countries and an obsolete machine-tool in Uzbekistan to have been made modernization by being equipped with new working parts to make it work with accuracy in terms of other important criteria such as precision of machine-tools, userfrien...
