Abstract In order to establish a more rational structural design method for mortar-filled sleeve rebar splices, it is necessary analyze and evaluate factors affecting the performance of these splices. It very desirable be able quantitatively estimate failure mode splices at stage. A estimating presented from existing research not clear because boundary expressed in formulas. There are also limi...

This paper investigated experimentally the feasibility of the method to estimate the stress in the prestressing tendons of prestressed concrete bridges using the magnetic field induced by a moving electromagnet. This method is based on the Villari effect in which the magnetic permeability of prestressing tendons changes when subjected to a mechanical stress. The test results show high linearity...

Superfine pigments that consist of natural and artificial pigments and are made of mineral soil with special characteristics are used in cementitious materials for various purposes. These pigments can decrease the amount of cement needed without loss of performance and strength and also change the monotonous and turbid colours of concrete into various attractive and light colours. In this study...

We outline the ability of zinc phosphate coatings, obtained by chemical conversion, to protect mild steel rebars against localized corrosion, generated by chloride ions in alkaline media. The corrosion resistance of coated steel, in comparison with uncoated rebars and coated and uncoated steel rebars embedded in mortar, were evaluated by open-circuit potential, potentiodynamic polarization, cro...

The present study aims to obtain the tensile properties of early age concrete based on a uniaxial tension test employing RC slender members. First, the paper shows that concrete strain is equal to the strain of rebar at the mid-span of the RC member. The tensile Young's modulus and the strain capacity of early age concrete are estimated using strain measurements. The experiment indicated that t...

This issue of IJE includes a theme on autism edited by two of us (Ezra Susser and Michealine Bresnahan). Our colleague Guohua Li joins us to write this introduction. In choosing this topic we venture into territory marked by controversy and conflict. The heat of the conflict is reflected in two recently published books, reviewed here by Stein and by Grinker. One of the flashpoints of controvers...

The Web has become a popular starting point for many innovations targeting infrastructure, services, and applications. One of the challenges of today’s vast Web landscape is to monitor ongoing developments, put them into context, and assess their chances of success. One of the main virtues of a more scientific approach towards the Web landscape would be a clear differentiation between approache...