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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.13 [2006] >
IJEMS Vol.13(4) [August 2006] >
| Title: | Application of ground scrap tyre rubbers in asphalt concrete pavements |
| Authors: | Aisien, F A
Hymore, F K
Ebewele, R O |
| Issue Date: | Aug-2006 |
| Publisher: | CSIR |
| IPC Code: | C08L95/00
E01C7/18 |
| Abstract: |
A laboratory scale evaluation of the
feasibility of using ground rubber from scrap tyres in dry process hot-mix
asphalt concrete used for road pavement was investigated. The rubber to asphalt
ratio (by weight) of the specimens that was initially kept constant at 0.2 was
subsequently varied from 0.1 to 0.5 using different rubber particle sizes. Some
specimens were cured at ambient temperature, while others were soaked in water
inside a curing tank, for a period of 28-days in the laboratory. The Marshall method was used
to prepare both conventional and rubberized asphalt concrete specimens. The
indirect tensile testing machine was used in the measurements of mechanical
properties of all specimens. The results from the study show that the
rubberized asphalt concrete mix has much better mechanical properties than the
conventional one: the tensile strength of the specimens for example, increased
from 1.82  103 to 2.04 103 kPa as the rubber to asphalt ratio increased from
0.1 to 0.3. Similar trends were observed in compressive and tensile moduli. The
mechanical properties of rubberized specimens cured in air and those soaked in
water were not significantly different (P>0.05).
However, the conventional concrete especially those soaked in water showed
inferior mechanical properties. The rubber particle size of 0.60 mm had the
best mechanical properties while that of particle size 2.36 mm has the poorest
mechanical properties.
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| Page(s): | 333-338 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.13(4) [August 2006]
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