Evaluation of parameters affecting reflection cracking in geogrid-reinforced overlay
Shahab Fallah , Ali Khodaii
Journal of Central South University ›› 2015, Vol. 22 ›› Issue (3) : 1016 -1025.
The influence of the most important parameters on the service life of reinforced asphalt overlay with geogrid materials in bending mode was examined by employing the Taguchi method and analysis of variance techniques. The objectives of this experiment was to investigate the effects of grid stiffness, tensile strength, coating type, amount of tack coat, overlay thickness, crack width and stiffnesses of asphalt overlay and existing asphalt concrete on propagation of the reflection cracking. Results indicate that the stiffnesses of cracked layer and overlay are the main significant factors that can directly improve the service life of an overlay against the reflection cracking. Generally, glass grid is more effective in reinforced overlay than polyester grid. Effect of crack width of the existing layer is significant when its magnitude increases from 6 to 9 mm.
reflection cracking / geogrid / bituminous mixture / pavement overlay / bending mode / Taguchi method
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
|
| [32] |
|
| [33] |
American Association of State HighwayTransportation Officials AASHTO.. Standard Method of Test for Determining Dynamic Modulus of Hot-Mix Asphalt Mixtures [S]. AASHTO Designation. Washington, D.C, 2004 |
| [34] |
Iran Highway Asphalt Paving Code [S].Ministry of Road and Transportation Research and Education Center, 2011 |
| [35] |
|
| [36] |
|
| [37] |
|
| [38] |
|
| [39] |
|
/
| 〈 |
|
〉 |