Kajian ini menyiasat tingkah laku tiang konkrit bergetah bertetulang berskala penuh dengan menggantikan getah carikan bersama agregat halus. Kajian ini bertujuan untuk mengkaji tindak balas struktur dan keupayaan menanggung beban tiang tetulang konkrit tertakluk kepada beban menegak. Kajian ini menumpu kepada keupayaan struktur tiang konkrit pendek yang mengandungi getah carikan. Sebahagian daripada agregat halus digantikan dengan getah carikan yang berukuran antara 0.05 mm hingga 5 mm berdasarkan isipadu. Ujian mampatan dijalankan untuk memperoleh prestasi struktur tiang konkrit bergetah bertetulang pada hari ke 28. Tiang konkrit dikenakan beban yang disematkan dikedua-dua hujung tiang tanpa kesipian. Kekuatan mampatan, mod kegagalan tiang, modulus elastik dan kemuluran tiang konkrit bergetah bertetulang direkodkan dan dianalisis. Keputusan menunjukkan bahawa penggantian 15% getah carikan daripada agregat halus mengurangkan kekuatan konkrit disebabkan oleh pengurangan dalam ketumpatan. Tiang konkrit bergetah bertetulang menunjukkan prestasi yang lebih baik dari segi kemuluran berbanding tiang konkrit bertetulang biasa.
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This study investigates the behaviour of full scale rubberized reinforced concrete column designed by replacing crumb rubber with fines aggregate. The aim of this study is to investigate the structural response and load carrying capacity of rubberized concrete column subjected to vertical load. This study focuses on the structural performance of short concrete column containing crumb rubber. Fine aggregates were partially replaced by crumb rubber with the size between 0.05 mm to 5 mm by volume. The compression test was carried out to obtain the structural performances of rubberized concrete column at the age of 28 days. The columns were loaded as pinned-end column at both end with no eccentricity. The compressive strength, failure mode of column, elastic modulus and ductility of rubberized concrete column were recorded and analysed. The result shows that the replacement of 15% crumb rubber in fine aggregate reduces the strength of the concrete due to the reduction in concrete density. The rubberized concrete column showed better performance in ductility than normal concrete column.
Stress-strain response of full scale rubberized reinforced concrete column under vertical load / Nurul Atiqah Mohamed