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Durability of Latex Modified Concrete Mixed with a Shrinkage Reducing Agent for Bridge Deck Pavement

Lee Yun Yong Kim Latex modified concrete (LMC) is used for a bridge deck pavement method that was introduced in Korea in the 2000s, and it is currently the concrete pavement method being used for most

Effect of Cylinder Size on the Modulus of Elasticity and Compressive Strength of Concrete from Static and Dynamic Tests

© 2015 Byung Jae Lee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided

Performance Evaluation of Semiplastic Recycled Cold Asphalt Using Noncement Binders

, Yuseong-gu, Daejeon 305-764, Republic of Korea Received 3 April 2015; Accepted 7 July 2015 Academic Editor: Robert Cerný Copyright © 2015 Byung Jae Lee et al. This is an open access article distributed

Mechanical and Durability Properties of Concrete Made with Used Foundry Sand as Fine Aggregate

In recent years, the construction industry has been faced with a decline in the availability of natural sand due to the growth of the industry. On the other hand, the metal casting industries are being forced to find ways to safely dispose of waste foundry sand (FS). With the aim of resolving both of these issues, an investigation was carried out on the reuse of waste FS as an...

Evaluation Technique of Chloride Penetration Using Apparent Diffusion Coefficient and Neural Network Algorithm

Diffusion coefficient from chloride migration test is currently used; however this cannot provide a conventional solution like total chloride contents since it depicts only ion migration velocity in electrical field. This paper proposes a simple analysis technique for chloride behavior using apparent diffusion coefficient from neural network algorithm with time-dependent...

Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar

This paper describes the experimental investigation carried out to develop the geopolymer concrete based on alkali-activated rice husk ash (RHA) by sodium hydroxide with sodium silicate. Effect on method of curing and concentration of NaOH on compressive strength as well as the optimum mix proportion of geopolymer mortar was investigated. It is possible to achieve compressive...

Performance Analysis of CFRP Composite Strips Confined RC Columns under Axial Compression

In an attempt to mitigate the high cost of FRP composite strengthening, an experimental investigation was carried out that sought to achieve efficient and most favorable FRP strengthening using CFRP composite strips. 50 mm wide CFRP composite strips were used in two different spacings (20 mm and 40 mm) to confine columns. The test results of the column confined with smaller...

Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm

Steel corrosion in reinforced concrete (RC) structure is such a critical problem to structural safety that many researches have been performed for maintaining required performance during intended service life. This paper is for a numerical technique for obtaining optimum concrete mix proportions through genetic algorithm (GA) for RC structures under carbonation which is...

Evaluation of Concrete Durability Performance with Sodium Silicate Impregnants

This paper presents an enhanced performance in concrete impregnated with silicate compound. Two different types of impregnant materials (inorganic and combined type) are applied to concrete samples with different strength grade (21 MPa and 34 MPa). Through lab-scale test, improved performances in impregnated concrete are evaluated regarding porosity, strength, chloride diffusion...

Impacts of coexisting bronchial asthma on severe exacerbations in mild-to-moderate COPD: results from a national database

Impacts of coexisting bronchial asthma on severe exacerbations in mild-to-moderate COPD: results from a national database Hyun Lee,1 Chin Kook Rhee,2 Byung-Jae Lee,3 Dong-Chull Choi,3 Jee-Ae Kim,4

An Important Role of α-Hemolysin in Extracellular Vesicles on the Development of Atopic Dermatitis Induced by Staphylococcus aureus

Skin barrier disruption and dermal inflammation are key phenotypes of atopic dermatitis (AD). Staphylococcus aureus secretes extracellular vesicles (EVs), which are involved in AD pathogenesis. Here, we evaluated the role of EVs-associated α-hemolysin derived from S. aureus in AD pathogenesis. α-hemolysin production from S. aureus was detected using western blot analyses. The...

Role of inducible nitric oxide synthase on the development of virus-associated asthma exacerbation which is dependent on Th1 and Th17 cell responses

information Author notesTae-Seop Shin & Byung-Jae Lee These authors contributed equally to this work. AffiliationsDepartment of Life Science, Division of Molecular and Life Sciences, Pohang University of ... , Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.Byung-Jae Lee & Dong-Chull Choi AuthorsSearch for Tae-Seop Shin in:Nature Research journals • PubMed • Google ScholarSearch for Byung-Jae Lee

IL-12-STAT4-IFN-γ axis is a key downstream pathway in the development of IL-13-mediated asthma phenotypes in a Th2 type asthma model

-Young Oh in:Nature Research journals • PubMed • Google ScholarSearch for Byung-Jae Lee in:Nature Research journals • PubMed • Google ScholarSearch for Yong Song Gho in:Nature Research journals • PubMed