Abstract
This research discussed the rational mixing moisture content (MMC) in foamed asphalt (FA) mix design. Sieve analysis was firstly used to study the bitumen dispersion and bitumen-aggregate coating and bonding action in FA mixes with three levels of MMC. Then, through variance analysis, the impacts of MMC, bitumen content and their interaction effect on the mechanical properties of FA mixes were studied. Indirect tensile strength test and dry density determination were carried out on FA mixes consisting of different gradings and material types to explore the rational MMC. On base of that, monotonic triaxial test was performed on two types FA mixes with various filler contents to further investigate the rational MMC for FA mix. The research results indicated that improper MMC led to bitumen clots and affected cohesion of FA mix. MMC and bitumen content had important impacts on mechanical properties of FA mix, while their interaction effect could be ignored in mix design. Optimal MMC increased to a certain extent with the increase of fine aggregates content, especially filler content in the grading. 70–80% of the optimum moisture content (OMC) was recommended as rational range of MMC for FA mix with 5–15% filler content and 75–85% of OMC for mix with 15–20% filler content, which offered a reference for easy and simplified MMC design for FA mix.
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References
He G, Wong W (2007) Laboratory study on permanent deformation of foamed asphalt mix incorporating reclaimed asphalt pavement materials. Constr Build Mater 21:1809–1819
Csanyi LH (1957) Foamed asphalt in bituminous paving mixtures. Highway Res Board Bull 160:108–122
Cazacliu B, Peticila M, Guieysse B, Colange J, Leroux C, Bonvallet J, Blaszczyk R (2008) Effect of process parameters on foamed bitumen-based road materials production at ambient temperature. Int J Road Mater Pavement Des 9(3):499–523
Muthen KM (1999) Foamed asphalt mixes: mix design procedure. Report (CR-98/077). CSIR Transportek, South Africa
Nataatmadja A (2001) Some characteristics of foamed bitumen mixes. Transp Res Rec 1767:120–125
Bowering RH, Martin CL (1976) Performance of newly constructed full depth foamed bitumen pavements. In: Proceedings of the 8th Australian Road Research Board conference, Perth, Australia
Jenkins KJ, Long FM, Ebels LJ (2007) Foamed bitumen mixes = shear performance? Int J Pavement Eng 8:85–98
Ruckel PJ, Acott SM, Bowering RH (1983) Foamed-asphalt paving mixtures: preparation of design mixes and treatment of test specimens. Transp Res Rec 911:88–95
Acott SM, Myburgh PA (1982) Design and performance study of sand bases treated with foamed asphalt. Transp Res Rec 898:290–296
Jenkins KJ (2000) Mix design considerations for cold and half-warm bituminous mixes with emphasis on foamed bitumen. Ph.D dissertation. University of Stellenbosch, Stellenbosch
Akeroyd FML, Hicks BJ (1988) Foamed bitumen road recycling. Highways 56:42–45
Sakr HA, Manke PG (1985) Innovations in Oklahoma foamix design procedures. Transp Res Rec 1034:26–34
Semmelink CJ (1991) The effect of material properties on the compactability of some untreated road building materials. Ph.D dissertation. University of Pretoria, Pretoria
Humberto C, Franco L, Wood LE (1982) Stabilization with foamed asphalt aggregates commonly used in low-volume roads. Transp Res Rec 898:297–302
Brennen M, Tia M, Altschaefl A, Wood LE (1983) Laboratory investigation of the use of foamed bitumen for recycled bituminous pavements. Transp Res Rec 911:80–87
Lee H, Kim Y (2003) Development of a mix design process for cold in-place rehabilitation using foamed asphalt. Final report for TR-474 Phase I. Iowa Department of Transportation, Iowa Highway Research Board
Lee H, Kim Y (2007) Validation of the mix design process for cold in-place rehabilitation using foamed asphalt. IHRB report TR-474. Iowa Department of Transportation, Iowa Highway Research Board
Bowering RH (1970) Upgrading marginal road building materials with foamed asphalt. Highway Engineering in Australia. Mobil Oil of Australia, Melbourne South
Roberts FL, Engelbrecht JC, Kennedy TW (1984) Evaluation of recycled mixtures using foamed bitumen. Transp Res Rec 968:78–85
Jenkins KJ, Robroch S, Henderson MG, Wilkinson J, Molenaar AAA (2004) Advanced testing for cold recycling treatment selection on N7 near Cape Town. In: Proceedings of the 8th conference on asphalt pavements for Southern Africa
Moloto PK (2010) Accelerated curing protocol for bitumen stabilized materials. Master’s dissertation. University of Stellenbosch, Stellenbosch
Asphalt Academy (2009) A guideline for the design and construction of bitumen emulsion and foamed bitumen stabilised materials, TG2, 2nd edn. Asphalt Academy, Pretoria
Little DN, Button JW, Epps JA (1983) Structural properties of laboratory mixtures containing foamed asphalt and marginal aggregates. Transp Res Rec 911:104–113
Lee DY (1981) Treating marginal aggregates and soils with foamed asphalt. Assoc Asphalt Paving Technol 50:211–250
Wirtgen GMBH (2004) Wirtgen cold recycling manual, 2nd edn. Wirtgen GMBH, Windhagen
Fu P (2009) Micromechanics for foamed asphalt stabilized materials. Ph.D dissertation. University of California, California
Jenkins KJ, Mulusa WK (2008) Updating bituminous stabilized materials guidelines: mix design report, phase II. Task 2—Development of a simple triaxial test. Technical Memorandum. www.asphaltacademy.co.za
Acknowledgment
This research was supported by the west area technology project of National Ministry of Communications in China (Granted No. 200531800009).
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Xu, JZ., Hao, PW., Ma, YF. et al. Study on the optimization design of mixing moisture content in foamed asphalt mix. Mater Struct 45, 1071–1085 (2012). https://doi.org/10.1617/s11527-011-9817-7
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DOI: https://doi.org/10.1617/s11527-011-9817-7