Energy absorption of modified rubberized concrete block under low velocity impact loads
Concrete road barriers are widely used for safety by separating traffic in opposite directions. However, when subjected to impact loads such as road accidents, the road barrier can only absorb slight energy. This study intends to investigate energy absorption of modified rubberized concrete un...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit UTHM
2022
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/7576/1/P14119_1ee968257caa8a6361ff531ccdc75713.pdf http://eprints.uthm.edu.my/7576/ https://doi.org/10.30880/rtcebe.2022.03.01.044 |
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| Summary: | Concrete road barriers are widely used for safety by separating traffic in
opposite directions. However, when subjected to impact loads such as road accidents,
the road barrier can only absorb slight energy. This study intends to investigate energy
absorption of modified rubberized concrete under low velocity impact loads. The
design of the concrete mix containing treated and untreated crumb rubber (CR), the
prediction of the modified rubberized concrete (MRC)’s penetration depth and its
energy absorption was studied. The size of MRC blocks are 300 mm × 300 mm × 200
mm for seven (7) specimens, which are one (1) control (0% CR, 0%RHA), three (3)
untreated CR (5% + 10% RHA, 10%+ 10% RHA, 15% + 10% RHA) and three (3)
treated CR (5% + 10% RHA, 10%+ 10% RHA, 15% + 10% RHA) were design.
Initially, the penetration depth was obtained from previous study and the projection
of its energy absorption were then calculated using the empirical formula. From the
result, it is proven that using MRC blocks with 15% treated CR is the optimum choice
to be applied to produce the road barrier. |
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