|
Descripción
|
|
|---|---|
| This study was designed to determine the effect of temperature on the mechanical strength (in both in vivo and post-exposure trials) of two alkaline cements (without OPC): (a) 100% fly ash (FA) and (b) 85% FA + 15% bauxite, the activated alkaline solution used was 85% 10-M NaOH + 15% sodium silicate. A Type I 42.5 R Portland cement was used as a control. Two series of trials were conducted: (i) in vivo trials in which bending and compressive strength, fracture toughness and modulus of elasticity were determined at different temperatures; and (ii) post-firing trials, assessing residual bending and compressive strength after a 1-h exposure to high temperatures and subsequent cooling. The findings showed that from 25 to 600 ?C, irrespective of the type of test (in vivo or post-firing), compressive mechanical strength rose, with the specimens exhibiting elastic behaviour and consequently brittle failure. At temperatures of over 600 ?C, behaviour differed depending on the type of test: (i) in the in vivo trials the high temperature induced pseudo-plastic strain and a decline in mechanical strength that did not necessarily entail specimen failure; (ii) in the post-firing trials, compressive strength rose | |
|
Internacional
|
Si |
|
JCR del ISI
|
Si |
|
Título de la revista
|
Construction And Building Materials |
|
ISSN
|
0950-0618 |
|
Factor de impacto JCR
|
2,265 |
|
Información de impacto
|
Datos JCR del año 2013 |
|
Volumen
|
|
|
DOI
|
http://dx.doi.org/10.1016/j.conbuildmat.2015.04.04 |
|
Número de revista
|
93 |
|
Desde la página
|
1188 |
|
Hasta la página
|
1196 |
|
Mes
|
SIN MES |
|
Ranking
|
|