Strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash

In India the generation of agro waste rice husk ash is abundant. The utilization of rice husk ash in development of geopolymer binders can be suitable to alleviate the environmental problems associated with disposal of rice husk ash. Further, the utilization of rice husk ash generated from the stack...

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Autores principales:	Shaik Numan Mahdi, Dushyanth V Babu R, Nabil Hossiney, Mohd Mustafa Al Bakri Abdullah
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Strength Durability Rice husk ash Geopolymer Pavers Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/350f040dc30c49f79dde4371916cecea
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spelling	oai:doaj.org-article:350f040dc30c49f79dde4371916cecea2021-11-26T04:29:40ZStrength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash2214-509510.1016/j.cscm.2021.e00800https://doaj.org/article/350f040dc30c49f79dde4371916cecea2022-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521003156https://doaj.org/toc/2214-5095In India the generation of agro waste rice husk ash is abundant. The utilization of rice husk ash in development of geopolymer binders can be suitable to alleviate the environmental problems associated with disposal of rice husk ash. Further, the utilization of rice husk ash generated from the stacks of brick kilns has not been addressed in past, particularly in development of geopolymer binders. This study proposes development of geopolymer paver (GEOPAV) blocks utilizing brick kiln rice husk ash (BKRHA). It presents fresh, mechanical and durability properties of GEOPAV blocks blended with fly ash, BKRHA, natural aggregates, NaOH and Na2SiO3 solution, and cured in both sundry and room temperature conditions. Microstructural analysis using scanning electron microscope (SEM) and X-ray diffraction (XRD) was adopted to study the influence of BKRHA on hardened properties of GEOPAV blocks. The results show that addition of BKRHA reduce the workability of GEOPAV mixes due to micro porous surface with honeycombed structure of BKRHA particles. The addition of BKRHA showed negligible improvement in compressive strength of GEOPAV blocks. However, the major advantage was observed with improved split tensile strength and flexural strength for GEOPAV blocks with BKRHA. Further, the durability properties in terms of resistance to acid and frost attack was significantly improved with the addition of BKRHA in GEOPAV blocks. Such improvements can be attributed to high amounts of amorphous silica in BKRHA which contribute towards dissolution and formation of polymeric gel, and thereby serve as a binder to enhance the geopolymer matrix making it dense. Finally, all the developed GEOPAV blocks satisfy the IS 15658–2021 specification requirements and perform much better when compared to commercially available paver blocks.Shaik Numan MahdiDushyanth V Babu RNabil HossineyMohd Mustafa Al Bakri AbdullahElsevierarticleStrengthDurabilityRice husk ashGeopolymerPaversMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 16, Iss , Pp e00800- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Strength Durability Rice husk ash Geopolymer Pavers Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Strength Durability Rice husk ash Geopolymer Pavers Materials of engineering and construction. Mechanics of materials TA401-492 Shaik Numan Mahdi Dushyanth V Babu R Nabil Hossiney Mohd Mustafa Al Bakri Abdullah Strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash
description	In India the generation of agro waste rice husk ash is abundant. The utilization of rice husk ash in development of geopolymer binders can be suitable to alleviate the environmental problems associated with disposal of rice husk ash. Further, the utilization of rice husk ash generated from the stacks of brick kilns has not been addressed in past, particularly in development of geopolymer binders. This study proposes development of geopolymer paver (GEOPAV) blocks utilizing brick kiln rice husk ash (BKRHA). It presents fresh, mechanical and durability properties of GEOPAV blocks blended with fly ash, BKRHA, natural aggregates, NaOH and Na2SiO3 solution, and cured in both sundry and room temperature conditions. Microstructural analysis using scanning electron microscope (SEM) and X-ray diffraction (XRD) was adopted to study the influence of BKRHA on hardened properties of GEOPAV blocks. The results show that addition of BKRHA reduce the workability of GEOPAV mixes due to micro porous surface with honeycombed structure of BKRHA particles. The addition of BKRHA showed negligible improvement in compressive strength of GEOPAV blocks. However, the major advantage was observed with improved split tensile strength and flexural strength for GEOPAV blocks with BKRHA. Further, the durability properties in terms of resistance to acid and frost attack was significantly improved with the addition of BKRHA in GEOPAV blocks. Such improvements can be attributed to high amounts of amorphous silica in BKRHA which contribute towards dissolution and formation of polymeric gel, and thereby serve as a binder to enhance the geopolymer matrix making it dense. Finally, all the developed GEOPAV blocks satisfy the IS 15658–2021 specification requirements and perform much better when compared to commercially available paver blocks.
format	article
author	Shaik Numan Mahdi Dushyanth V Babu R Nabil Hossiney Mohd Mustafa Al Bakri Abdullah
author_facet	Shaik Numan Mahdi Dushyanth V Babu R Nabil Hossiney Mohd Mustafa Al Bakri Abdullah
author_sort	Shaik Numan Mahdi
title	Strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash
title_short	Strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash
title_full	Strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash
title_fullStr	Strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash
title_full_unstemmed	Strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash
title_sort	strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/350f040dc30c49f79dde4371916cecea
work_keys_str_mv	AT shaiknumanmahdi strengthanddurabilitypropertiesofgeopolymerpaverblocksmadewithflyashandbrickkilnricehuskash AT dushyanthvbabur strengthanddurabilitypropertiesofgeopolymerpaverblocksmadewithflyashandbrickkilnricehuskash AT nabilhossiney strengthanddurabilitypropertiesofgeopolymerpaverblocksmadewithflyashandbrickkilnricehuskash AT mohdmustafaalbakriabdullah strengthanddurabilitypropertiesofgeopolymerpaverblocksmadewithflyashandbrickkilnricehuskash
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Strength and durability properties of geopolymer paver blocks made with fly ash and brick kiln rice husk ash

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