Laboratory and field investigation of grouted macadam for semi-flexible pavements
Source abstract
Abstract
Grouted macadam (GM) made of an open-graded asphalt skeleton whose air voids are filled with a cementitious grout, is used as wearing course in semi-flexible pavements. GM stands out for its high stiffness and rutting resistance, as well as for its chemical resistant and jointless surface. Although it could satisfy all the engineering properties requested by ports, airports and industrial pavements, there are still few applications worldwide and the mechanical characteristics have rarely been investigated in depth. The main objective of this paper is to compare the stiffness, fatigue resistance and the cracking propagation resistance of GM mixtures manufactured in the field and in the laboratory. The thermal susceptibility and the ravelling resistance of laboratory specimens were also evaluated. The findings show that the stiffening contribution of the grout improves the fatigue life especially at high deformation levels. However, due to the hardening of the asphalt skeleton caused by the ageing of the bitumen, GM mixture may exhibit a brittle behaviour. Considering the validation and correspondence between laboratory and field results, the data could be useful for establish some analytical pavement design criteria.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Grouting, Rheology, and Soil Mechanics · Asphalt Pavement Performance Evaluation · Geotechnical Engineering and Underground Structures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
1. Investigating the fatigue performance of grouted macadams
2. Laboratory and field evaluation of cement grouted bituminous mixes10.1080/14680629.2019.1567375 ↗
3. Performance characteristics of the open-graded asphalt concrete filled with a special cement grout10.3846/bjrbe.2015.40 ↗
4. Design of pavements incorporating grouted macadams10.1061/(ASCE)0733-947X(2008)134:1(7) ↗
5. Improved understanding of grouted mixture fatigue behavior under indirect tensile test configuration10.1016/j.conbuildmat.2017.08.048 ↗
6. J. Oliveira, N.H. Thom, S.E. Zoorob, Fracture and fatigue strength of grouted macadams, in: Proceedings of the 10th International Conference on Asphalt Pavements, Quebec, 12–17 August 2006.
7. J.R.M. Oliveira, Grouted Macadam: Material Characterisation for Pavement Design (Doctoral dissertation), University of Nottingham, 2006.
8. A study of the fatigue performance of grouted macadams
9. Evaluation on the cracking resistance of semi-flexible pavement mixture by laboratory research and field validation10.1016/j.conbuildmat.2019.02.064 ↗
10. Mechanical properties of cement-bitumen composites for semi-flexible pavement surfacing10.3846/bjrbe.2014.24 ↗
11. EN 12190: Products and Systems for the Protection and Repair of Concrete Structures – Test Methods – Determination of Compressive Strength of Repair Mortar, 1998.
12. EN 12696-33: Bituminous Mixtures – Test Method – Part 33: Specimen Prepared by Roller Compactor, 2019.
13. EN 12697-27: Bituminous Mixtures – Test Methods – Part 27: Sampling, 2017.
14. EN 12697-6: Bituminous Mixtures – Test Methods – Part 6: Determination of Bulk Density of Bituminous Specimens, 2020.
15. EN 12697-30: Bituminous Mixtures – Test Methods for Hot Mix Asphalt – Part 30: Specimen Preparation by Impact Compactor, 2018.
16. EN 12697-26: Bituminous Mixtures – Test Methods – Part 26: Stiffness, 2018.
17. EN 12697-24 (Annex E): Bituminous Mixtures – Test Methods – Part 24: Resistance to Fatigue, 2018.
18. EN 12697-44: Bituminous Mixtures – Test Methods – Part 44: Crack Propagation by Semi-Circular Bending Test, 2019.
19. AASHTO TP 124: Standard Method of Test for Determining the Fracture Potential of Asphalt Mixtures Using the Illinois Flexibility Index Test, 2020.
20. ‘Asphalt mixtures’ crack propagation assessment using semi-circular bending tests
21. Development of the fracture-based flexibility index for asphalt concrete cracking potential using modified semi-circle bending test parameters10.1016/j.conbuildmat.2016.03.144 ↗
22. EN 12697-17: Bituminous Mixtures – Test Methods – Part 17: Particle Loss of Porous Asphalt Specimens, 2017.
23. A. Simone, C. Sangiorgi, V. Vignali, V., Le pavimentazioni semiflessibili: caratterizzazione del Grouted Macadam, Atti XVI Convegno Nazionale SIIV – Campus di Arcavacata di Rende (CS) – 20–22 settembre 2006, Centro Editoriale e Librario, Sessione Manutenzione, 2006, pp. 229 – 238 (in Italian).
24. F. Cardone, F. Canestrari, X. Jiang, G. Ferrotti, Performance optimization of warm recycled mixtures, in: Proceedings of the 9th International Conference on Maintenance and Rehabilitation of Pavements—Mairepav9, Lecture Notes in Civil Engineering, vol. 76, Springer, Cham, 2020. 〈https://doi.org/10.1007/978-3-030-48679-2_22〉.10.1007/978-3-030-48679-2_22 ↗