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Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri

In recent decades, the approach of using dry mix mortar in the construction industry is crucial due to high demand of concrete block for building materials either for load bearing or non-load bearing structure. Dry mix is widely used by manufacturers as it can be produced quickly and higher produ...

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Main Author: Mohamad Juri, Amirah
Format: Thesis
Language:English
Published: 2021
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Strength and testing of cement, etc.
Online Access:https://ir.uitm.edu.my/id/eprint/60095/1/60095.pdf
https://ir.uitm.edu.my/id/eprint/60095/
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spelling my.uitm.ir.600952022-05-23T02:15:12Z https://ir.uitm.edu.my/id/eprint/60095/ Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri Mohamad Juri, Amirah Strength and testing of cement, etc. In recent decades, the approach of using dry mix mortar in the construction industry is crucial due to high demand of concrete block for building materials either for load bearing or non-load bearing structure. Dry mix is widely used by manufacturers as it can be produced quickly and higher production because it’s casted by machine. River sand is one of the natural resources used to produce building materials which is now depleting. Besides that, the consumption of polystyrene has extremely increased due to its many applications such as packaging purpose and consumer goods thus generated to the increment of polystyrene waste. Hence, the introduction of lightweight dry mix mortar incorporating with EPS executed with appropriate pressure is one of feasible options to overcome the issue. The objective of this study is to determine the best replacement of expanded polystyrene (EPS) powder in the design mix composition ratio of 1:3.0, 1:3.5 and 1:4.0, cement to sand with pressure of 500, 600 and 700 psi in achieving the targeted density between range of 1200 to 1800 kg/m3 and compressive strength between range of 5 to 7 N/mm2 that suit it as lightweight and for non-load bearing purposes. The pressure was applied to compress the fresh mortar in the mould in order to produce a preform dry mix mortar cube size 100 mm x100 mm x 100 mm. The EPS was mixed with different percentages of 35%, 40%, 45%, 50% and 55% as partial replacement of sand and 0% as control. A constant water cement ratio of 0.37 was used throughout the study and exposure to air-drying for a period of 7 and 28 days were considered in this study. The density and compressive strength tests were conducted to obtain the best replacement of EPS in dry mix mortar which achieve the targeted value. It is shows that 55% of EPS replacement in mix composition of 1:3.0, 1:3.5 and 1:4.0 at all pressures can be consider as appropriate mix proportion at 28 days of age. The density for all specimens also was found to be below than 1800 kg/m3, where it can be considered as lightweight concrete. However, the most appropriate mix was selected at 55% of EPS in mix design 1:3.5 subjected to pressure 500, 600 and 700 psi where compressive strength marked 5.010 N/mm2, 5.045 N/mm2 and 5.994 N/mm2 respectively. Scanning Electron Microscopy (SEM) also was carried out in determining the morphological of the EPS dry mix mortar based on mix 1:3.5 at three (3) pressures. From the study, it can be suggested that the properties of EPS and pressure exerted play a crucial role to the density, thus influences the strength of mortar cube. Further study can be conducted by using mix 1:3.5 with higher level of EPS replacement to achieve higher compressive strength within the range of non-load bearing structure but lower in density. 2021-11 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/60095/1/60095.pdf (2021) Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri. Masters thesis, thesis, Universiti Teknologi MARA.
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Strength and testing of cement, etc.
spellingShingle Strength and testing of cement, etc.
Mohamad Juri, Amirah
Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri
description In recent decades, the approach of using dry mix mortar in the construction industry is crucial due to high demand of concrete block for building materials either for load bearing or non-load bearing structure. Dry mix is widely used by manufacturers as it can be produced quickly and higher production because it’s casted by machine. River sand is one of the natural resources used to produce building materials which is now depleting. Besides that, the consumption of polystyrene has extremely increased due to its many applications such as packaging purpose and consumer goods thus generated to the increment of polystyrene waste. Hence, the introduction of lightweight dry mix mortar incorporating with EPS executed with appropriate pressure is one of feasible options to overcome the issue. The objective of this study is to determine the best replacement of expanded polystyrene (EPS) powder in the design mix composition ratio of 1:3.0, 1:3.5 and 1:4.0, cement to sand with pressure of 500, 600 and 700 psi in achieving the targeted density between range of 1200 to 1800 kg/m3 and compressive strength between range of 5 to 7 N/mm2 that suit it as lightweight and for non-load bearing purposes. The pressure was applied to compress the fresh mortar in the mould in order to produce a preform dry mix mortar cube size 100 mm x100 mm x 100 mm. The EPS was mixed with different percentages of 35%, 40%, 45%, 50% and 55% as partial replacement of sand and 0% as control. A constant water cement ratio of 0.37 was used throughout the study and exposure to air-drying for a period of 7 and 28 days were considered in this study. The density and compressive strength tests were conducted to obtain the best replacement of EPS in dry mix mortar which achieve the targeted value. It is shows that 55% of EPS replacement in mix composition of 1:3.0, 1:3.5 and 1:4.0 at all pressures can be consider as appropriate mix proportion at 28 days of age. The density for all specimens also was found to be below than 1800 kg/m3, where it can be considered as lightweight concrete. However, the most appropriate mix was selected at 55% of EPS in mix design 1:3.5 subjected to pressure 500, 600 and 700 psi where compressive strength marked 5.010 N/mm2, 5.045 N/mm2 and 5.994 N/mm2 respectively. Scanning Electron Microscopy (SEM) also was carried out in determining the morphological of the EPS dry mix mortar based on mix 1:3.5 at three (3) pressures. From the study, it can be suggested that the properties of EPS and pressure exerted play a crucial role to the density, thus influences the strength of mortar cube. Further study can be conducted by using mix 1:3.5 with higher level of EPS replacement to achieve higher compressive strength within the range of non-load bearing structure but lower in density.
format Thesis
author Mohamad Juri, Amirah
author_facet Mohamad Juri, Amirah
author_sort Mohamad Juri, Amirah
title Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri
title_short Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri
title_full Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri
title_fullStr Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri
title_full_unstemmed Pressure reliance on mix composition and replacement level of expanded polystyrene (EPS) in dry mix mortar / Amirah Mohamad Juri
title_sort pressure reliance on mix composition and replacement level of expanded polystyrene (eps) in dry mix mortar / amirah mohamad juri
publishDate 2021
url https://ir.uitm.edu.my/id/eprint/60095/1/60095.pdf
https://ir.uitm.edu.my/id/eprint/60095/
_version_ 1734303066592641024
score 13.211869

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