Effects of pre-treatment of Curauá fibers on compatibility with portland cements
ABSTRACT There has been ever growing interest in the construction industry in using lighter, eco-friendly and sustainable materials, while maintainingthe desirable mechanical properties. The objective of the present work was to evaluate the effects of pre-treatments on chemical compatibility between Curauá fiber (Ananas erectifolius) and Portland cement. In the inhibition test, cement hydration temperature evolution wasmeasured in the absence and presence of untreated and treated Curauá fibers (cold water, hot water and NaOH). The chemical characterization of untreated Curauá fibers was done by determining the content of extractives, lignin, holocellulose and ashes. Thee Segal's method was used for determinate the crystallinity index on untreated and treated fibers. The inhibition test graded the untreated fiber as high inhibition, showing the need to provide it a treatment. Treatments done on Curauá fibers removed some amorphous components of the fibers affected positively the compatibility between cement and fiber, and reducing the inhibition.
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Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
2018
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oai:scielo:S1517-707620180003004432018-10-10Effects of pre-treatment of Curauá fibers on compatibility with portland cementsBilcati,Géssica KatalyneMatoski,AdalbertoTrianoski,RosilaniLengowski,Elaine Cristina Inhibition chemical components crystallinity Ananas erectifolius ABSTRACT There has been ever growing interest in the construction industry in using lighter, eco-friendly and sustainable materials, while maintainingthe desirable mechanical properties. The objective of the present work was to evaluate the effects of pre-treatments on chemical compatibility between Curauá fiber (Ananas erectifolius) and Portland cement. In the inhibition test, cement hydration temperature evolution wasmeasured in the absence and presence of untreated and treated Curauá fibers (cold water, hot water and NaOH). The chemical characterization of untreated Curauá fibers was done by determining the content of extractives, lignin, holocellulose and ashes. Thee Segal's method was used for determinate the crystallinity index on untreated and treated fibers. The inhibition test graded the untreated fiber as high inhibition, showing the need to provide it a treatment. Treatments done on Curauá fibers removed some amorphous components of the fibers affected positively the compatibility between cement and fiber, and reducing the inhibition.info:eu-repo/semantics/openAccessLaboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH2Matéria (Rio de Janeiro) v.23 n.3 20182018-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762018000300443en10.1590/s1517-707620180003.0524 |
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Bilcati,Géssica Katalyne Matoski,Adalberto Trianoski,Rosilani Lengowski,Elaine Cristina |
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Bilcati,Géssica Katalyne Matoski,Adalberto Trianoski,Rosilani Lengowski,Elaine Cristina Effects of pre-treatment of Curauá fibers on compatibility with portland cements |
author_facet |
Bilcati,Géssica Katalyne Matoski,Adalberto Trianoski,Rosilani Lengowski,Elaine Cristina |
author_sort |
Bilcati,Géssica Katalyne |
title |
Effects of pre-treatment of Curauá fibers on compatibility with portland cements |
title_short |
Effects of pre-treatment of Curauá fibers on compatibility with portland cements |
title_full |
Effects of pre-treatment of Curauá fibers on compatibility with portland cements |
title_fullStr |
Effects of pre-treatment of Curauá fibers on compatibility with portland cements |
title_full_unstemmed |
Effects of pre-treatment of Curauá fibers on compatibility with portland cements |
title_sort |
effects of pre-treatment of curauá fibers on compatibility with portland cements |
description |
ABSTRACT There has been ever growing interest in the construction industry in using lighter, eco-friendly and sustainable materials, while maintainingthe desirable mechanical properties. The objective of the present work was to evaluate the effects of pre-treatments on chemical compatibility between Curauá fiber (Ananas erectifolius) and Portland cement. In the inhibition test, cement hydration temperature evolution wasmeasured in the absence and presence of untreated and treated Curauá fibers (cold water, hot water and NaOH). The chemical characterization of untreated Curauá fibers was done by determining the content of extractives, lignin, holocellulose and ashes. Thee Segal's method was used for determinate the crystallinity index on untreated and treated fibers. The inhibition test graded the untreated fiber as high inhibition, showing the need to provide it a treatment. Treatments done on Curauá fibers removed some amorphous components of the fibers affected positively the compatibility between cement and fiber, and reducing the inhibition. |
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Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro |
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2018 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762018000300443 |
work_keys_str_mv |
AT bilcatigessicakatalyne effectsofpretreatmentofcurauafibersoncompatibilitywithportlandcements AT matoskiadalberto effectsofpretreatmentofcurauafibersoncompatibilitywithportlandcements AT trianoskirosilani effectsofpretreatmentofcurauafibersoncompatibilitywithportlandcements AT lengowskielainecristina effectsofpretreatmentofcurauafibersoncompatibilitywithportlandcements |
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1756424564391280640 |