By Seiichi Miura, Tatsuya Ishikawa, Nobuyuki Yoshida, Yoshio Hisari, Nagato Abe
Advances in Transportation Geotechnics II offers with the geotechnics of roads, railways and airfields. supplying fiscal and sustainable transportation infrastructures for societies is extremely depending on growth made during this box. those contributions to the 2d foreign convention on Transportation Geotechnics (Hokkaido, Japan, 10-12 September 2012), held less than the auspices of the overseas Society of Soil Mechanics and Geotechnical Engineering (ISSMGE), hide a huge diversity of technical subject matters, together with these addressed by way of the 1st convention held in Nottingham, united kingdom in 2008. Advanc. Read more...
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Additional info for Advances in Transportation Geotechnics 2
The flexural stiffness was obtained from maximum tensile strains on the bottom of the specimens. The outcomes of the paper are as summarized as follow: First, 1% to 3% CTB was found out to be classified as modified material while 4% and 5% CTB are categorized as stabilized materials. Second, fatigue cracking phenomenon can be seen in stabilized materials (4% and 5% CTB) while other types of distress may affect the behavior of modified materials (1 to 3% CTB). Third, 4% cemented material is observed to be the most suitable material to perform under fatigue loading conditions.
0, 6, 12, 18, 24 hrs) to obtain soil samples to measure the Unconfined Compressive Strength (UCS). Table 1. 4 2 3 4 5 6 Lime Percentage [%] Figure 1. Effect of lime content on the strength gain of the lime treated Emerald soil. 0 0 4 8 12 16 20 24 Amelioration Time [Hours] Figure 2. Effect of amelioration period on UCS of lime treated Barcaldine soil. As shown in Figure 1, the strength (UCS) of treated soil increased with the increase in the mixing lime content. However, the rate of strength gain when increasing the lime content above the lime demand of the soil was not prominent compared to that of when increasing the lime content up to the lime demand.
Therefore, a field trial was conducted on a section of rail track in the town of Bulli (north of Wollongong City) to measure deformations and cyclic stresses. It was demonstrated that in the case of wheel flats, extremely high stresses would be transmitted to the ballast bed. Installing layers of synthetic materials such as rubber pads (shock mats) in rail tracks can lead to the attenuation of high impact forces and thereby mitigate ballast degradation. In order to evaluate the effectiveness of shock mats, a series of laboratory tests using a high capacity drop-weight impact testing equipment was carried out.
Advances in Transportation Geotechnics 2 by Seiichi Miura, Tatsuya Ishikawa, Nobuyuki Yoshida, Yoshio Hisari, Nagato Abe