Influence of organo-montmorillonites on fatigue properties of bitumen and mortar
Source abstract
Abstract
Abstract This study investigated the influence of organo-montmorillonites on fatigue properties of bitumen and mortar. Two organo-montmorillonites, Mt1 and Mt2 with octadecyl trimethyl ammonium and with benzyl dimethyl hexadecyl ammonium surfactants were used to modify one base bitumen with a content of 4 wt.%, respectively. Mt2 was also used to prepare the mortar which consisted of bitumen, filler and sand at a weight ratio of 0.34:0.30:0.36. The dispersion state of montmorillonite in bitumen was determined by the X-ray diffraction. A cone and plate device was designed to perform the fatigue test on bitumen. A column specimen before and after a short time aging was prepared for the fatigue test of mortar. An intercalated morphology for both montmorillonites was observed in bitumen. Results indicated that the addition of organo-montmorillonites can change the fatigue properties of bitumen under a stress control mode. This change was influenced by the type of the surfactant which determined the interfacial interaction between the bitumen and the montmorillonite. The mortar with modified bitumen showed better fatigue resistance and aging resistance than one with base bitumen. Therefore, the organo-montmorillonite would be an alternative to modifiers used in the bitumen to improve the lifetime of asphalt pavements.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Polymer Nanocomposites and Properties · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
Show source-provided references
1. Petersen JC. Chemical composition of asphalt as related to asphalt durability: state of the art. Trasnport Res Rec 1984.
2. Relation of asphalt chemistry to physical properties and specification
3. Mo LT. Damage development in the adhesive zone and mortar of porous asphalt concrete. PhD thesis: Delft University of Technology; 2010.
4. Hagos ET. The effect of aging on binder properties of porous asphalt concrete. PhD thesis: Delft University of Technology; 2008.
5. Twenty years of polymer clay nanocomposites10.1002/mame.200600260 ↗
6. Bergaya · 2006
7. Koo · 2006
8. Pinnavaia · 2000
9. Polymer layered silicate nanocomposites10.1002/adma.19960080104 ↗
10. Influence of sodium and organo-montmorillonites on the properties of bitumen10.1016/j.clay.2010.04.005 ↗
11. Muraya PM. Permanent deformation of asphalt mixes. PhD thesis: Delft University of Technology; 2007.
12. Khedoe RN, Moraal J. Sample preparation and laboratory testing for the LOT research program. Report number: 7-07-170–4. Road and railway section. Delft University of Technology; 2007.
13. Van Dijk W, Moreaud H, Quedeville A, Uge P. The fatigue of bitumen and bituminous mixes. In: Third international conference of the structural design of asphalt pavements. London; 1972. p. 355–66.
14. Chomton G, Valayer PJ. Applied rheology of asphalt mixes-practical applications. In: Third international conference of the structural design of asphalt pavements. London; 1972. p. 214–25.
15. Hopman PC, Kunst PAJC, Pronk AC. A renewed interpretation method for fatigue measurement, verification of miner’s rule. In: 4th Eurobitume symposium. Madrid; 1989. p. 557–61.
16. Evaluation of fatigue criteria for asphalt binders10.3141/1766-07 ↗
17. Pronk · 1995
18. Morrison · 2001
19. Experimental investigation on the fatigue damage behaviour of modified bituminous binders and mastics