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Rendering mortars in Medina Azahara, Part II: Material characterization and alteration causes

M. T. Blanco-Varela1997-06-01Materiales de Construccion

In the present work, the depicted coat that covers some of the mortars exposed to weathering in the Medina Azahara archaeological site is .studied. That coat is characterized from the compositional and physical viewpoint and the main causes for its decay are determined. The depicted coat is formed by cal cite and iron…

Influence of the activator concentration on the kinetics of the alkaline activation process of a blastfurnace slag

A. Fernández-Jiménez、F. Puertas1997-06-01Materiales de Construccion

The influence of activator solution concentration on hydration kinetics of an alkaline activated blast furnace slag has been studied. The alkaline activator used was a mix of waterglass (Na2SiO3∙nH2O) and NaOH solution (of variable concentration). Final activator concentrations were 3,4 and 5 % Na2O wt. with respect t…

Editorial

Equipo Editorial1997-06-01Materiales de Construccion

TABLE OF CONTENTS

作者信息未提供1997-06-01Science and Engineering of Composite Materials

Titelei

作者信息未提供1997-06-01Applied Rheology

Acid–Base Reactions of Transition Metal Oxides in the Solid State

John A. Duffy1997-06-01Journal of the American Ceramic Society

Subsolidus compatibility data exist for a number of ternary oxide systems containing a transition metal oxide. Ternary diagrams, suitable for the present purpose, are limited mainly to those that include FeO, Fe 2 O 3 , ZnO, or Cr 2 O 3 , and these are examined in the context of Lewis acid–base interaction by consider…

Glass properties and applicationsCatalysis and Oxidation ReactionsIron oxide chemistry and applications

Preparation and Electrical Properties of Conducting Polyaniline-Polycarbonate Composite Films

Xiao Hong Yin、Katsumi Yoshino、Kenichi Hashizume 等 4 位作者1997-06-01Japanese Journal of Applied Physics

Conducting polymer polyaniline and insulating polymer polycarbonate composites have been prepared. Electrical conductivity can be controlled in a wide range (more than 15 orders of magnitude) by a small amount of polyaniline. This characteristic can be explained by a percolation model. That is, at the threshold concen…

Advanced Sensor and Energy Harvesting MaterialsOrganic Electronics and PhotovoltaicsConducting polymers and applications