Investigating the fatigue performance of grouted macadams

被引：17
作者：
Oliveira, J. R. M. [1 ]
Sangiorgi, C. [2 ]
Fattorini, G. [2 ]
Zoorob, S. E. [3 ]
机构：
[1] Univ Minho, Dept Civil Engn, Guimaraes, Portugal
[2] Univ Bologna, DISTART Strade, I-40126 Bologna, Italy
[3] Univ Leeds, Sch Civil Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-TRANSPORT | 2009年 / 162卷 / 02期
关键词：
fatigue; grouting; pavement design;
D O I：
10.1680/tran.2009.162.2.115
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A conventional grouted macadam is manufactured by producing a highly porous asphalt skeleton (25-35% voids), and. filling the voids with a selected highly. flowable cementitious grout. Grouted macadam combines some of the best qualities of concrete and asphalt pavements, namely the. flexibility and absence of joints which characterise asphalt and the high static bearing capacity and wear resistance of concrete. Moreover grouted macadam layers are impermeable and efficiently distribute the stresses in the underlying base layer. The speed of construction of grouted macadam surfacings and the short duration required prior to opening to traffic is a major advantage over conventional concrete. Current. fields of applications include: airport pavements, industrial. floors, harbours, bus terminals, distribution centres, and other heavily stressed areas. The aim of this investigation was to assess the fatigue behaviour of a range of grouted macadam mixtures. Indirect tensile fatigue tests and two point bending tests were conducted on laboratory manufactured specimens and on samples extracted from a trafficked pavement test facility. The experimental work provided interesting data on the influence of mixture composition on fatigue life and highlighted differences between strain and stress-controlled fatigue tests on performance of grouted macadam mixtures compared with conventional asphalts.
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页码：115 / 123
页数：9
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