Effect of rice husk ash fineness on porosity and hydration reaction of blended cement paste

Weiting Xu; Yiu Tommy Lo; Dong Ouyang; Sharzim Ali Memon; Feng Xing; Weilun Wang; Xiongzhou Yuan

doi:10.1016/j.conbuildmat.2015.04.030

Effect of rice husk ash fineness on porosity and hydration reaction of blended cement paste

Weiting Xu^*, Yiu Tommy Lo, Dong Ouyang, Sharzim Ali Memon, Feng Xing, Weilun Wang, Xiongzhou Yuan

^*Corresponding author for this work

Department of Architecture and Civil Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

113 Citations (Scopus)

Abstract

An experimental investigation on the effect of grinding fineness of rice husk ash (RHA) on the mechanical, hydration and porosity properties of RHA blended paste was launched. Locally produced RHA with six different grinding durations of 5, 10, 30, 60, 90 and 120 min corresponding to mean particle size of 8.61, 8.15, 5.45, 6.25, 6.38 and 6.95 μm, respectively, were used in this study. The physical and chemical properties of the ground RHAs were determined and results show that variations in chemical composition of RHAs with different grinding fineness are small. The pastes with water binder ration of 0.4 and cement substitution of 10% by ground RHAs were tested. Comparisons between pastes with SF, and control paste (only with ordinary Portland cement) were also presented. Mechanical properties, hydration reaction and porosity of paste were investigated by compressive strength, thermogravimetric analysis (TGA) and environment scanning electron microscope (ESEM) plus Image Pro Plus software analysis, respectively. Results show that incorporation of 30-min grinding RHA exhibits a strong, high hydration and low porosity paste due to the better dispersion, filling effect and pozzolanic activity.

Original language	English
Pages (from-to)	90-101
Journal	Construction and Building Materials
Volume	89
Online published	15 May 2015
DOIs	https://doi.org/10.1016/j.conbuildmat.2015.04.030
Publication status	Published - 1 Aug 2015

Research Keywords

Grinding fineness
Hydration reaction
Porosity
Rice husk ash

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title = "Effect of rice husk ash fineness on porosity and hydration reaction of blended cement paste",

abstract = "An experimental investigation on the effect of grinding fineness of rice husk ash (RHA) on the mechanical, hydration and porosity properties of RHA blended paste was launched. Locally produced RHA with six different grinding durations of 5, 10, 30, 60, 90 and 120 min corresponding to mean particle size of 8.61, 8.15, 5.45, 6.25, 6.38 and 6.95 μm, respectively, were used in this study. The physical and chemical properties of the ground RHAs were determined and results show that variations in chemical composition of RHAs with different grinding fineness are small. The pastes with water binder ration of 0.4 and cement substitution of 10% by ground RHAs were tested. Comparisons between pastes with SF, and control paste (only with ordinary Portland cement) were also presented. Mechanical properties, hydration reaction and porosity of paste were investigated by compressive strength, thermogravimetric analysis (TGA) and environment scanning electron microscope (ESEM) plus Image Pro Plus software analysis, respectively. Results show that incorporation of 30-min grinding RHA exhibits a strong, high hydration and low porosity paste due to the better dispersion, filling effect and pozzolanic activity.",

keywords = "Grinding fineness, Hydration reaction, Porosity, Rice husk ash",

author = "Weiting Xu and Lo, {Yiu Tommy} and Dong Ouyang and Memon, {Sharzim Ali} and Feng Xing and Weilun Wang and Xiongzhou Yuan",

year = "2015",

month = aug,

day = "1",

doi = "10.1016/j.conbuildmat.2015.04.030",

language = "English",

volume = "89",

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T1 - Effect of rice husk ash fineness on porosity and hydration reaction of blended cement paste

AU - Xu, Weiting

AU - Lo, Yiu Tommy

AU - Ouyang, Dong

AU - Memon, Sharzim Ali

AU - Xing, Feng

AU - Wang, Weilun

AU - Yuan, Xiongzhou

PY - 2015/8/1

Y1 - 2015/8/1

N2 - An experimental investigation on the effect of grinding fineness of rice husk ash (RHA) on the mechanical, hydration and porosity properties of RHA blended paste was launched. Locally produced RHA with six different grinding durations of 5, 10, 30, 60, 90 and 120 min corresponding to mean particle size of 8.61, 8.15, 5.45, 6.25, 6.38 and 6.95 μm, respectively, were used in this study. The physical and chemical properties of the ground RHAs were determined and results show that variations in chemical composition of RHAs with different grinding fineness are small. The pastes with water binder ration of 0.4 and cement substitution of 10% by ground RHAs were tested. Comparisons between pastes with SF, and control paste (only with ordinary Portland cement) were also presented. Mechanical properties, hydration reaction and porosity of paste were investigated by compressive strength, thermogravimetric analysis (TGA) and environment scanning electron microscope (ESEM) plus Image Pro Plus software analysis, respectively. Results show that incorporation of 30-min grinding RHA exhibits a strong, high hydration and low porosity paste due to the better dispersion, filling effect and pozzolanic activity.

AB - An experimental investigation on the effect of grinding fineness of rice husk ash (RHA) on the mechanical, hydration and porosity properties of RHA blended paste was launched. Locally produced RHA with six different grinding durations of 5, 10, 30, 60, 90 and 120 min corresponding to mean particle size of 8.61, 8.15, 5.45, 6.25, 6.38 and 6.95 μm, respectively, were used in this study. The physical and chemical properties of the ground RHAs were determined and results show that variations in chemical composition of RHAs with different grinding fineness are small. The pastes with water binder ration of 0.4 and cement substitution of 10% by ground RHAs were tested. Comparisons between pastes with SF, and control paste (only with ordinary Portland cement) were also presented. Mechanical properties, hydration reaction and porosity of paste were investigated by compressive strength, thermogravimetric analysis (TGA) and environment scanning electron microscope (ESEM) plus Image Pro Plus software analysis, respectively. Results show that incorporation of 30-min grinding RHA exhibits a strong, high hydration and low porosity paste due to the better dispersion, filling effect and pozzolanic activity.

KW - Grinding fineness

KW - Hydration reaction

KW - Porosity

KW - Rice husk ash

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DO - 10.1016/j.conbuildmat.2015.04.030

M3 - RGC 21 - Publication in refereed journal

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EP - 101

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Effect of rice husk ash fineness on porosity and hydration reaction of blended cement paste

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Corrigendum to ‘‘Effect of rice husk ash fineness on porosity andhydration reaction of blended cement’’ [Constr. Build. Mater. 89 (2015)90–101]

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