Effect of silica fume and SBR latex on the pasteaggregate interfacial transition zone

Materials Research

João Adriano Rossignolo¹ 

[1] ,University of São Paulo Engineering School of São Carlos Department of Architecture and UrbanismSão Carlos SP ,Brazil

关键词: concrete;    interfacial transition zone;    silica fume;    polymers;    SEM;   

DOI  :  10.1590/S1516-14392007000100018

来源: SciELO

【 摘 要 】

This paper deals with the effect of silica fume and styrene-butadiene latex (SBR) on the microstructure of the interfacial transition zone (ITZ) between Portland cement paste and aggregates (basalt). Scanning Electron Microscope (SEM) equipped with energy dispersive x ray analysis system (EDX) was used to determine the ITZ thickness. In the plain concrete a marked ITZ around the aggregate particles (55 µm) was observed, while in concretes with silica fume or latex SBR the ITZ was less pronounced (35-40 µm). However, better results were observed in concretes with silica fume and latex SBR (20-25 µm).

【 授权许可】

CC BY   
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