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All Journal Jurnal Jalan Jembatan
G.J. Winston Fernandez
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Civil Engineering, Building, Construction & Architecture

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KAJIAN KARAKTERISTIK LEMPUNG BOBONARO DI PROVINSI NUSA TENGGARA TIMUR G.J. Winston Fernandez
Jurnal Jalan-Jembatan Vol 24 No 1 (2007)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

Bobonaro clay spreading along national road in Timor Island at East Nusa Tenggara has high plasticity and contains Montmorillonite. It is potential to swell and shrinkage on rainy and dry season. On saturated condition, shear strength included bearing capacity Bobonaro clay will decrease significantly, and will not able to support design load. The damage that happenned to asphalt pavement such as longitudinal cracks, surface deformation, and subsidance at national road between Kupang-Atambua is predicted caused by the characteristic of Bobonaro clay. Keywords : Bobonaro clay, Expansive soil, Shrinkage, Swelling..
KAJIAN PENANGANAN KERUSAKAN JALAN NASIONAL DI PULAU TIMOR DENGAN TEKNIK "MOISTURE BARRIER" G.J. Winston Fernandez
Jurnal Jalan-Jembatan Vol 24 No 3 (2007)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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Abstract

The damage of asphalt pavement occurs in national road between Kupang adn Atambua in Timor Island is East Nusa Tenggara usually identified by longitudinal cracks on side of road pavement. The cracks were caused by shrinkage and swelling of subgrade of "Bobonaro Clay" which has expansive characteristic. One methods from several possibilities to overcome the swell and shrinkage from happening, is to maintain the m.c. as constant as possible. The technology applied here is by the used of moisture barrier namely geomembran. This method was chosen to overcome the crack problem in Sta.214-217 between Maubesi - Nesam considering that the function for public service of the road should be kept functioning etc. After two years monotoring, no cracks detected. Keywords : expansive soils, moisture barrier, geomembrane.
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