Performance of unpaved road with different soft clay reinforcement
This research, in general, aim to evaluate the performance of full-scale unpaved road on bamboo geotextile composite reinforced soft clay (unpaved road BGC) and high strength geotextile reinforced soft clay (unpaved road HSG), compared to the unpaved constructed on un-reinforced soft clay (unpaved r...
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| Format: | Thesis |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/5592/ http://eprints.uthm.edu.my/5592/1/0911.pdf |
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| Summary: | This research, in general, aim to evaluate the performance of full-scale unpaved road
on bamboo geotextile composite reinforced soft clay (unpaved road BGC) and high
strength geotextile reinforced soft clay (unpaved road HSG), compared to the
unpaved constructed on un-reinforced soft clay (unpaved road UR). The soft soil is
natural poor in strength but high in compressibility and cannot support heavy load
such as building and dynamic load from heavy vehicle. This condition can be a
problem to people for transporting agriculture products. The objective of this
research to determine the effect on settlement and pore water pressure with partial
removal of surcharge, to determine and compare the dynamic load effect on ground
condition of reinforced with high strength geotextile and bamboo-geotextile
composite. The full-scale unpaved road constructed at RECESS. Three sections of
road consist of bamboo-geotextile reinforced, high strength geotextile reinforced and
unreinforced (control) was constructed and each section is 10 m length and 16 m
width with 5 m length of buffer zones separating each section. The dynamic load
from truck has been applied on each section and the installed instrumentation has
been measure data for studying the effects of distribution dynamic load on rural road.
The instrumentations that were installed at study location are inclinometers,
piezometers, and hydrostatic profilers in order to monitor road performance. Effects
of dynamic load has been monitored in 2 parts i.e. first part is before applied
dynamic load, second part is after applied dynamic load. The four conclusions of this
research are effect of partial removal of surcharge on embankment the reverse
consolidation of soil has been occurs, the HSG rebound about lo%, BGC rebound
about 11% and UR rebound about 8%, reverse consolidation occurs at negative
excess pore water pressure, Settlement difference at maximum of passes for BGC
compared to UR is a 23% lower than UR. While settlement differences HSG was
26% lower than the UR, Lateral movement different at BGC compare to UR which
about 24% lower than UR. While for HSG has 38% lower than UR, Excess pore
water pressure different at 3 meter depth at BGC compare to UR which about 23%
lower than UR.While for HSG has 73% lower than UR. This means that the
settlement, lateral movement and pore water pressure at the HSG is smaller than the
other soil reinforcement. |
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