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"Remain" and "Maintain"

By Y. Uchida

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Special Issue : Material Researches to make a Technical Breakthrough

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1. Properties of Cement and Concrete Materials

   1.1 Coefficient of Thermal Expansion of Concrete

   By S. Miyazawa

   1.2 The Latest Functions and Analysis Examples of Initial Stress of Concrete

   By M. Ishikawa, Y. Ishikawa, H. Nakamura and T. Mizobuchi

   1.3 Summary of Test Results of Blast-furnace Slag Fine Aggregate Concrete Cured in 20°C Water for 30 Years

   By A. Ueno

   1.4 Evaluation and Management System on Curing for Durability of Hardened Concrete

   By T. Iyoda

   1.5 The Effects of High Temperature Curing on Ultra-high-strength Concrete

   By S. Koizumi and T. Sugamata

   1.6 Influence of Bleeding on Permeability of Concrete and Mechanisms of Bleeding Water Behavior

   By Y. Kato

   1.7 An Analog Experiment of Mass Transport and Deterioration Process in Concrete using Nano/Micro Channels

   By Y. Sakai

   1.8 The Effects of Nano Structure on the Properties Cementitious Materials as a Barrier Material

   By D. Minato

   1.9 Current Situation and Future Prospect of Geopolymers

   By K. Ichimiya, S. Hatanaka and D. Atarashi

2. Deterioration Mechanisms of Concrete Structures

   2.1 Reconsideration of Limit State of Reinforced Concrete Structure

   By M. Kanematsu

   2.2 Threshold Chloride Content for Corrosion of Steel in Concrete

   By T. Maruya

   2.3 Materials Design Against Alkali-silica Reaction by Controlling Alkalinity of Pore Solution in Concrete

   By Y. Kawabata

   2.4 Mechanism of Frost Damage of Concrete and Techniques for Controlling of Air Voids System

   By Y. Hama, M. Aba and D. Atarashi

   2.5 Practical Study for Preventing Scaling Deterioration of Concrete

   By T. Oyamada and S. Hanehara

   2.6 Concrete Strength Change of Hamaoka NPS Unit 1 Reactor Building -Research Utilizing Docommissioning Plant-

   By Y. Tanaka, H. Wada, I. Maruyama and O. Kontani

3. Investigation Techniques

   3.1 Quantitative Hydration Analysis of Concrete by Rietveld Method

   By T. Sagawa

   3.2 Structural Analysis of Slag and Cement Materials by Solid-state NMR

   By T. Takahashi, T. Ohkubo and K. Kanehashi

   3.3 Basic Study on Measuring Methods for Contact Time of between Steel Sphere and Concrete by Impacting Steel Sphere

   By S. Uchida, G. Kubo, S. Iwano and Y. Oshima

   3.4 Study on Surface Air Permeability of Concrete

   By A. Nonaka and N. Yuasa

   3.5 Introduction of a Novel Method for Measuring the Corrosion Rate of Steel in Concrete, -CIPE Method-

   By S. Yamamoto

4. Visions for the Future Research Works

   4.1 My Memory of the Research on Alkali-silica Reaction and Delayed Ettringite Formation

   By K. Torii

   4.2 Expectation for Concrete Filling Simulation

   By Y. Yamada

   4.3 Basic Research and Practical

   By H. Naruse

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