Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive

Campuran asfalt bersuhu sederhana (WMA) adalah teknologi yang membolehkan pengurangan ketara suhu pencampuran dan pemadatan campuran asfalt panas lazim.Teknologi ini boleh menjimatkan kos, meningkatkan kebolehkerjaan, mengurangkan kesan pengeluaran gas rumah hijau dan mesra alam. Walau bagaimanapun,...

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Main Author:	Khan Kakar, Muhammad Rafiq
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.usm.my/37350/1/Effects_of_adhesion_failure_on_moisture_damage_of_warm_mix_asphalt_containing_cecabase_additive_Muhammad_Rafiq_Khan_Kakar_A9_2015_BSB.pdf
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spelling	my-usm-ep.373502019-04-12T05:25:41Z Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive 2015-08 Khan Kakar, Muhammad Rafiq TA Engineering (General). Civil engineering (General) TA401-492 Materials of engineering and construction. Mechanics of materials Campuran asfalt bersuhu sederhana (WMA) adalah teknologi yang membolehkan pengurangan ketara suhu pencampuran dan pemadatan campuran asfalt panas lazim.Teknologi ini boleh menjimatkan kos, meningkatkan kebolehkerjaan, mengurangkan kesan pengeluaran gas rumah hijau dan mesra alam. Walau bagaimanapun, WMA mudah terdedah kepada kerosakan lembapan sebagai akibat suhu pengeluaran yang lebih rendah. Hal yang demikian menyebabkan kegagalan rekatan, dan seterusnya pelucutan pengikat asfalt daripada agregat. Dalam kajian ini, bahan tambah campuran suam Cecabase digunakan untuk menurunkan suhu pengeluaran dan meningkatkan keboleh-rekatan asfalt dengan agregat. Pengikat jenis PG-64 dan PG-76 digunakan untuk menyediakan spesimen ujian. Bertindak sebagai surfaktan apabila dicampurkan dengan pengikat asfalt, Cecabase menggalakkan rekatan pada antara muka pengikat asfalt dan agregat. Keputusan ujian makmal secara keseluruhannya menunjukkan bahawa penambahan Cecabase tidak memberi kesan yang ketara ke atas reologi bahan pengikat dan kandungan pengikat optimum. Pendekatan baru melalui analisis imej digunakan untuk mengklasifikasikan kerentanan kegagalan rekatan dalam campuran asfalt sebagai akibat kerosakan lembapan. Hasil kajian menunjukkan kegagalan rekatan meningkat dengan bilangan kitaran beku dan cair dan campuran yang mengandungi pengikat PG-76 mempamerkan kegagalan rekatan yang lebih rendah berbanding pengikat PG-64. Ujian tegangan langsung substrat pengikat-agregat dan ujian tarik-keluar dijalankan untuk menilai kegagalan rekatan. Warm Mix Asphalt (WMA) is a technology that allows significant reduction in mixing and compaction temperatures of conventional hot mix asphalt. It is a cost effective technology that can improve mixture workability, reduces greenhouse gas emissions, and is environmental friendly. However, WMA is susceptible to moisture damage due to its lower production temperature. This can cause adhesion failure, hence stripping of asphalt binder from the aggregates. In this research, Cecabase warm mix additive was used to lower the production temperature and enhance the asphalt binder adhesion properties with aggregate. Two binders, PG-64 and PG-76, were used to prepare the test specimens. As a surfactant and when blended with asphalt binder, Cecabase promotes adhesion at the binder-aggregate interface. Therefore, the overall laboratory test results showed that addition of Cecabase had no significant effects on binder rheology and optimum binder content. A novel approach using image analysis was used to measure the asphalt mixture adhesion failure susceptibility due to moisture damage. The results showed that adhesion failure increased with the number of freeze and thaw cycles and mixtures prepared with PG-76 binder exhibited lower adhesion failure compared to PG-64 binder. To assess the adhesion failure, binder-aggregate substrate direct tensile and pull-off tension tests were carried out. An accelerated laboratory vacuum saturator (ALVS) moisture conditioning was fabricated to condition the binder-aggregate specimens. 2015-08 Thesis http://eprints.usm.my/37350/ http://eprints.usm.my/37350/1/Effects_of_adhesion_failure_on_moisture_damage_of_warm_mix_asphalt_containing_cecabase_additive_Muhammad_Rafiq_Khan_Kakar_A9_2015_BSB.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Awam
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General) TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) TA Engineering (General) Civil engineering (General) Khan Kakar, Muhammad Rafiq Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive
description	Campuran asfalt bersuhu sederhana (WMA) adalah teknologi yang membolehkan pengurangan ketara suhu pencampuran dan pemadatan campuran asfalt panas lazim.Teknologi ini boleh menjimatkan kos, meningkatkan kebolehkerjaan, mengurangkan kesan pengeluaran gas rumah hijau dan mesra alam. Walau bagaimanapun, WMA mudah terdedah kepada kerosakan lembapan sebagai akibat suhu pengeluaran yang lebih rendah. Hal yang demikian menyebabkan kegagalan rekatan, dan seterusnya pelucutan pengikat asfalt daripada agregat. Dalam kajian ini, bahan tambah campuran suam Cecabase digunakan untuk menurunkan suhu pengeluaran dan meningkatkan keboleh-rekatan asfalt dengan agregat. Pengikat jenis PG-64 dan PG-76 digunakan untuk menyediakan spesimen ujian. Bertindak sebagai surfaktan apabila dicampurkan dengan pengikat asfalt, Cecabase menggalakkan rekatan pada antara muka pengikat asfalt dan agregat. Keputusan ujian makmal secara keseluruhannya menunjukkan bahawa penambahan Cecabase tidak memberi kesan yang ketara ke atas reologi bahan pengikat dan kandungan pengikat optimum. Pendekatan baru melalui analisis imej digunakan untuk mengklasifikasikan kerentanan kegagalan rekatan dalam campuran asfalt sebagai akibat kerosakan lembapan. Hasil kajian menunjukkan kegagalan rekatan meningkat dengan bilangan kitaran beku dan cair dan campuran yang mengandungi pengikat PG-76 mempamerkan kegagalan rekatan yang lebih rendah berbanding pengikat PG-64. Ujian tegangan langsung substrat pengikat-agregat dan ujian tarik-keluar dijalankan untuk menilai kegagalan rekatan. Warm Mix Asphalt (WMA) is a technology that allows significant reduction in mixing and compaction temperatures of conventional hot mix asphalt. It is a cost effective technology that can improve mixture workability, reduces greenhouse gas emissions, and is environmental friendly. However, WMA is susceptible to moisture damage due to its lower production temperature. This can cause adhesion failure, hence stripping of asphalt binder from the aggregates. In this research, Cecabase warm mix additive was used to lower the production temperature and enhance the asphalt binder adhesion properties with aggregate. Two binders, PG-64 and PG-76, were used to prepare the test specimens. As a surfactant and when blended with asphalt binder, Cecabase promotes adhesion at the binder-aggregate interface. Therefore, the overall laboratory test results showed that addition of Cecabase had no significant effects on binder rheology and optimum binder content. A novel approach using image analysis was used to measure the asphalt mixture adhesion failure susceptibility due to moisture damage. The results showed that adhesion failure increased with the number of freeze and thaw cycles and mixtures prepared with PG-76 binder exhibited lower adhesion failure compared to PG-64 binder. To assess the adhesion failure, binder-aggregate substrate direct tensile and pull-off tension tests were carried out. An accelerated laboratory vacuum saturator (ALVS) moisture conditioning was fabricated to condition the binder-aggregate specimens.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Khan Kakar, Muhammad Rafiq
author_facet	Khan Kakar, Muhammad Rafiq
author_sort	Khan Kakar, Muhammad Rafiq
title	Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive
title_short	Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive
title_full	Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive
title_fullStr	Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive
title_full_unstemmed	Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive
title_sort	effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Awam
publishDate	2015
url	http://eprints.usm.my/37350/1/Effects_of_adhesion_failure_on_moisture_damage_of_warm_mix_asphalt_containing_cecabase_additive_Muhammad_Rafiq_Khan_Kakar_A9_2015_BSB.pdf
_version_	1747820662910615552

Effects of adhesion failure on moisture damage of warm mix asphalt containing cecabase additive

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