Effect of rice husk ash properties on the early age and long term strength of mortar

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNResearchpeer-review

Abstract

This paper presents an experimental study on the effect of chemical composition and physical properties of rice husk ash (RHA) on the strength of mortar. The aim of this investigation was to establish the optimal RHA replacement levels as blending component in cement. Four different types of RHA (A, B, C and D) were used of which RHA-C and D had the highest content of amorphous silica. Compressive and tensile strength and workability of the mixes were compared with control OPC samples. Results show that the early age (7days) strength of RHA blended mortar samples was lower than the compressive and tensile strength of the OPC control samples. However, the 28 day strength of samples with up to 20% RHA-C and RHA- D was higher than that of the control samples. The 90 day strength of all blended samples with up to 40% RHA was higher than that of the control samples. RHA-D performed best in the experiments with a compressive strength increase of 16% at 20% RHA replacement and an increase of compressive strength of 8.6% at 40% RHA replacement. The results at 90 days show that cement could be replaced with up to 50% RHA with only a small reduction in strength compared to OPC mortar. From the results it was found that the content of amorphous silica has the biggest influence on the strength of the mortar samples while the workability was higher for samples with finer grained RHA.
Original languageEnglish
Title of host publicationFIB Symposium 2017
Place of PublicationMaastricht
Pages0-0
Number of pages1
Publication statusPublished - 12 Jun 2017
EventFIB Symposium 2017 - Maastricht, 12-14 June 2017
Duration: 12 Jun 2017 → …

Conference

ConferenceFIB Symposium 2017
Period12/06/17 → …

Fingerprint

Ashes
Mortar
Compressive strength
Cements
Tensile strength
Silica

Keywords

  • Rice husk ash
  • silica content
  • pozzlanic activity
  • XRD analysis
  • compressive strength
  • tensile strength

Cite this

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title = "Effect of rice husk ash properties on the early age and long term strength of mortar",
abstract = "This paper presents an experimental study on the effect of chemical composition and physical properties of rice husk ash (RHA) on the strength of mortar. The aim of this investigation was to establish the optimal RHA replacement levels as blending component in cement. Four different types of RHA (A, B, C and D) were used of which RHA-C and D had the highest content of amorphous silica. Compressive and tensile strength and workability of the mixes were compared with control OPC samples. Results show that the early age (7days) strength of RHA blended mortar samples was lower than the compressive and tensile strength of the OPC control samples. However, the 28 day strength of samples with up to 20{\%} RHA-C and RHA- D was higher than that of the control samples. The 90 day strength of all blended samples with up to 40{\%} RHA was higher than that of the control samples. RHA-D performed best in the experiments with a compressive strength increase of 16{\%} at 20{\%} RHA replacement and an increase of compressive strength of 8.6{\%} at 40{\%} RHA replacement. The results at 90 days show that cement could be replaced with up to 50{\%} RHA with only a small reduction in strength compared to OPC mortar. From the results it was found that the content of amorphous silica has the biggest influence on the strength of the mortar samples while the workability was higher for samples with finer grained RHA.",
keywords = "Rice husk ash, silica content, pozzlanic activity, XRD analysis, compressive strength, tensile strength",
author = "Binyamien Rasoul and Friederike Gunzel and Muhammad Rafiq",
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Rasoul, B, Gunzel, F & Rafiq, M 2017, Effect of rice husk ash properties on the early age and long term strength of mortar. in FIB Symposium 2017. Maastricht, pp. 0-0, FIB Symposium 2017, 12/06/17.

Effect of rice husk ash properties on the early age and long term strength of mortar. / Rasoul, Binyamien; Gunzel, Friederike; Rafiq, Muhammad.

FIB Symposium 2017. Maastricht, 2017. p. 0-0.

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNResearchpeer-review

TY - GEN

T1 - Effect of rice husk ash properties on the early age and long term strength of mortar

AU - Rasoul, Binyamien

AU - Gunzel, Friederike

AU - Rafiq, Muhammad

PY - 2017/6/12

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N2 - This paper presents an experimental study on the effect of chemical composition and physical properties of rice husk ash (RHA) on the strength of mortar. The aim of this investigation was to establish the optimal RHA replacement levels as blending component in cement. Four different types of RHA (A, B, C and D) were used of which RHA-C and D had the highest content of amorphous silica. Compressive and tensile strength and workability of the mixes were compared with control OPC samples. Results show that the early age (7days) strength of RHA blended mortar samples was lower than the compressive and tensile strength of the OPC control samples. However, the 28 day strength of samples with up to 20% RHA-C and RHA- D was higher than that of the control samples. The 90 day strength of all blended samples with up to 40% RHA was higher than that of the control samples. RHA-D performed best in the experiments with a compressive strength increase of 16% at 20% RHA replacement and an increase of compressive strength of 8.6% at 40% RHA replacement. The results at 90 days show that cement could be replaced with up to 50% RHA with only a small reduction in strength compared to OPC mortar. From the results it was found that the content of amorphous silica has the biggest influence on the strength of the mortar samples while the workability was higher for samples with finer grained RHA.

AB - This paper presents an experimental study on the effect of chemical composition and physical properties of rice husk ash (RHA) on the strength of mortar. The aim of this investigation was to establish the optimal RHA replacement levels as blending component in cement. Four different types of RHA (A, B, C and D) were used of which RHA-C and D had the highest content of amorphous silica. Compressive and tensile strength and workability of the mixes were compared with control OPC samples. Results show that the early age (7days) strength of RHA blended mortar samples was lower than the compressive and tensile strength of the OPC control samples. However, the 28 day strength of samples with up to 20% RHA-C and RHA- D was higher than that of the control samples. The 90 day strength of all blended samples with up to 40% RHA was higher than that of the control samples. RHA-D performed best in the experiments with a compressive strength increase of 16% at 20% RHA replacement and an increase of compressive strength of 8.6% at 40% RHA replacement. The results at 90 days show that cement could be replaced with up to 50% RHA with only a small reduction in strength compared to OPC mortar. From the results it was found that the content of amorphous silica has the biggest influence on the strength of the mortar samples while the workability was higher for samples with finer grained RHA.

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KW - tensile strength

M3 - Conference contribution with ISSN or ISBN

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CY - Maastricht

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