Resilient modulus of foamed asphalt materials is stress state dependent, but the field stress state cannot be fully characterized by any available laboratory test alone. Test results of the
Read MoreCorrelations between back-calculated FA moduli: (a) Period A and (b) Period B (FA: Foamed Asphalt, E EVER: modulus from the EVERCALC tool, E GEN:
Read MoreBecause of the differences in the properties of diversified foamed rubberized asphalt, the foamed rubberized asphalt with excellent performance was selected in terms of foaming effect and various performances through AHP. 3. Results and discussion3.1. 3.1.1.
Read MoreStorage Stability and Compatibility in Foamed Warm-Mix Asphalt Containing Recycled Asphalt Pavement Binder. Xingmin Liang, Xin Yu, +4 authors. Jiandong Huang.
Read More[26], Viscosity-Temperature Susceptibility (VTS) [27], complex shear modulus (G*) [28], and storage and loss moduli (G'' and G'''') [29]. In this study, the storage modulus and loss modulus of the asphalt binders at different temperatures were selected.
Read MoreBased on these observations, the temperature sensitivity coefficient of foamed asphalt stiffness is defined and a simplified model to predict foamed asphalt mix stiffness at any triaxial stress state and temperature is proposed and validated. A procedure to normalize back-calculated resilient modulus to a standard temperature is also presented.
Read MoreFig. 14, Fig. 15, Fig. 16, Fig. 17 shows the changes of storage modulus and loss modulus with temperature before and after asphalt aging of each sample. The fitting function of each curve can be obtained by linear fitting the curves, and the absolute value of the slope of the fitting function is shown in Fig. 18 .
Read MoreKeywords: Half-Warm Mix Asphalt (HWMA); foamed bitumen; stiffness modulus (Sm); Fischer-Tropsch (FT) synthetic wax; asphalt concrete (AC). 1. Introduction Hot mix asphalt technologies (HMA) are the most commonly used technologies in Poland for the production of asphalt mixtures intended for the structural layers of roads.
Read MoreThe results show that the values of complex modulus (G*), storage modulus (G′), loss modulus (G″), and rutting factor (G*/sinδ) of all asphalt binders increase with the severity of aging.
Read MoreResilient modulus of foamed asphalt materials is stress state dependent, but the field stress state cannot be fully characterized by any available laboratory test alone. Test results of the
Read MoreAsphalt binder PG58-28 was used in this study. The basic and rheological properties of PG58-28 is specified in Table 1.The foamed asphalt binders were prepared using a single foaming agent (water or ethanol) and combinations of foaming agents (water-NaHCO 3 and ethanol-NaHCO 3) with different dosages.) with different dosages.
Read More2.3 Foamed Bitumen ConditionThe bitumen used was an 80/100 penetration grade virgin bitumen with a 102 dmm penetration at 25 C, softening point of 54.6 C and dynamic viscosity at 60 C of 0.22 Pa.s. It meets the criteria specified by Asphalt Academy [] and Wirtgen [] that recommend a minimum penetration value of 80 dmm for
Read Morethe stiffness modulus of recycled mixtures with foamed bitumen was performed through identification recently the foamed asphalt cold recycling technology obtained widely applications in many
Read MoreFor ITS test, both 2 and 3% foamed asphalt content were used in each of these mixtures. For dynamic modulus test, only 3% foamed asphalt content was used in these mixtures. During mixing, RAP was mixed with
Read MoreSemantic Scholar extracted view of "Storage Stability and Compatibility in Foamed Warm-Mix Asphalt Containing Recycled Asphalt Pavement Binder" by Xingmin Liang et al. DOI: 10.1061/jmcee7.mteng-16468 Corpus ID: 267951901 Storage Stability and
Read MoreModulus and Repeated Load Tests of Cold In-Place Recycling Mixtures Using Foamed Asphalt Asphalt mixture dynamic modulus is one of the most important parameters for flexible pavement design
Read MoreJenkins et al. (2007) performed triaxial resilient modulus tests on laboratory-produced foamed asphalt treated RAP with and without Portland cement and reported modulus values in the range of 270
Read MoreDynamic modulus tests were conducted on the high-elasticity modified asphalt mixtures using the simple performance tester (SPT) at various temperatures (5 C, 15 C, 25 C, 40 C, and 55 C) and frequencies (0.1, 0.5, 1, 5, 10, 20, and 25 Hz).
Read MoreMoreover, foamed rubberized asphalt and high-viscosity asphalt also demonstrated that high temperature performance was reduced [20–23]. Belc, A.L. et al. [24] discovered that most additives were not associated with a significant change inbitumen''s characteristics, but organic additive showed a significant influence on bitumen''s
Read MoreKeywords: asphalt pavement, cold-in-place recycling, dynamic modulus, fatigue cracking, transverse cracking. 1 Introduction With the advancement of milling equipment and a rise
Read Morebinders, foamed binders after 14 days of storage, non-foamed binders after Rolling Thin Film Oven Test (RTFOT) ageing, 3.1. Rheological Characteristics of the Complex Modulus G* of the Asphalt
Read MoreSemantic Scholar extracted view of "Analysis of IT-CY Stiffness Modulus of Foamed Bitumen Asphalt Concrete Compacted at 95 C " by A. Chomicz-Kowalska et al. DOI: 10.1016/J.PROENG.2017.02.065 Corpus ID: 135908640 Analysis of IT
Read MoreCorrelations between back-calculated FA moduli: (a) Period A and (b) Period B (FA: Foamed Asphalt, E EVER: modulus from the EVERCALC tool, E GEN: modulus from the GENETIC tool). Figure 7. Values of R 2 for Foamed Asphalt modulus prediction based on Deflection-Based Parameters (MLET: Multi-Layer Elastic Theory,
Read MoreFoamed asphalt technique is widely used in road construction due to its environmental and economic effects. The various characteristics of foamed asphalt and mixtures have already been investigated; however, few studies focused on what
Read MoreAs part of the validation effort to evaluate the consistency of a new cold in-place recycling using foamed asphalt (CIR — foam) mix design process for the Iowa Department of Transportation, the dynamic modulus and repeated load tests were conducted to evaluate the performance characteristics of CIR — foam mixtures over a
Read MoreComplex modulus characterisation of cold-recycled mixtures with foamed bitumen and different contents of reclaimed asphalt Road Mater. Pavement Des., 18 ( 1 ) ( 2017 ), pp. 130 - 150
Read MoreDespite significant economic and environmental benefits, performance of warm mix asphalt (WMA) containing reclaimed asphalt pavement (RAP) remains a matter of concern. Among the current WMA technologies, the plant foaming technique (called "foamed WMA" in this study) has gained the most attention, since it eliminates the need
Read MoreThe resilient modulus of FBS materials is generally lower than that of hot mix asphalt (Loizos 2006), but can reach the resilient modulus of cement and lime treated materials (Sakr and Manke 1999). FBS materials are moisture sensitive and a reduction of resilient modulus between 30% and 50% have been reported when the specimen was
Read MoreWiejska 45A, 15 -351 Biaystok, Poland. Abstract. This study is to compare the results of temperature sensitivity tests of foamed bitumen asphalt concrete (AC 8) compacted at 95ºC. with that of
Read MoreThe loss shear modulus of the foamed asphalt after 30 F–T cycles was higher than that of foamed asphalt, indicating that the energy loss of foamed asphalt after 30 F–T cycles was faster than that
Read MoreCold-in place recycling with foamed bitumen (FB) is currently employed for the rehabilitation of road pavements, from local roads to heavy-duty motorways. The mechanical properties of FB mixtures may vary from that of an improved granular material to that of an asphalt concrete, depending on their composition. The objective of the present study was to
Read MoreFoamed asphalt stabilised base (FASB) material is a partially bound material consisting of four phases of aggregate skeleton, air voids, foamed binder and
Read MoreThe properties of foamed asphalt cold recycling mixture (FACRM) will seriously affect the application performances of pavement structure made from FACRM. The results from this study suggest that FACRM has a high modulus and small temperature shrinkage stress, reducing early damage caused by pavement cracks.
Read MoreABSTRACT This paper investigates laboratory test methods for resilient modulus of foamed asphalt mixes. By comparing test results from different laboratory test methods, the effects of various stress states are identified. The indirect tensile resilient modulus test and the free-free resonant column test were found to yield stress states
Read MoreThe resilient modulus of the foamed asphalt mix was found to be between 1.9 and 5.4 times that of the virgin aggregate depending on density level and bulk stress, indicating suitability of foamed asphalt mix as a base course material in lieu of virgin aggregate, at
Read MoreDynamic modulus values of the RAP materials varied depending on the sources and foamed asphalt contents. Coarse RAP materials with a small amount of residual asphalt content exhibited a higher modulus value at 4.4 ° C but exhibited a lower dynamic modulus value at 37.8 ° C than fine RAP materials with a large amount of
Read MoreThe tribological test was conducted on six foamed asphalts with varying foaming water contents (FWCs) and on a controlled un-foamed asphalt binder at four different temperatures: 25 C, 60 C, 100 C
Read MoreDownload scientific diagram | Storage modulus of foamed asphalt and foamed asphalt with 30 F-T cycles. from publication: Laboratory Investigation on Physical, Rheological Thermal
Read Morerecycling with foamed asphalt is a sustainable pavement rehabilitation technology and becomes more widely applied in modulus test, only 3% foamed asphalt content was used in these mixtures
Read MoreTo address the compatibility and storage stability issues of the foamed warm reclaimed asphalt (FWRA) in the actual practice, 15 FWRA samples were
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