Aging effect on the mixed-mode (I/III) fracture toughness of cement emulsified asphalt composite: Experimental and statistical investigation

Najjar, Shima; Moghaddam, Abolfazl Mohammadzadeh; Sahaf, Ali; Aliha, M.R.M.

doi:10.1016/j.engfracmech.2022.108292

Cited by 19 publications

(3 citation statements)

References 66 publications

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“…As explanatory factors for mix design, the weight ratios of bitumen and cement (B/C), water and cement (W/C), and cement weight per unit volume of mortar (C) have been taken into consideration. Ensuring that the rheological and mechanical characteristics of CEAMs were within the Chinese Railway Standard's stated ranges, 32 B/C, W/C, and C have been inserted to Design Expert software between (0.2–0.5), (0.0–3.7), and (450–650kg/m 3 ), respectively 33–35 . The tests were run in triplicate and organized into a single block.…”

Section: Procedures and Materials Specificationsmentioning

confidence: 99%

Predicting fracture behavior (mixed‐modes I/III) of cement asphalt mortar under fatigue and static loading conditions using response surface method

Najjar,

Mohammadzadeh Moghaddam,

Sahaf

et al. 2023

Fatigue Fract Eng Mat Struct

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Static and cyclic fracture properties (Modes I, III, and I/III) of cement emulsified asphalt mortar at three frequencies were investigated in terms of the fracture energy and fatigue life, respectively. For this to achieve, 576 edge notched disk bend specimens with 16 haphazard mix designs including, disparate bitumen‐to‐cement (B/C), water‐to‐cement (W/C) ratios, and cement contents (C) were tested. By developing statistical models (at the 5% significance level, p value < 0.05), the findings revealed that under static loading, the fracture energy got highest in tearing mode and lowest in opening mode. In all fracture modes, the fracture energy decreased with an increase of C and decrease of B/C while the mortar's fatigue life augmented due to a rise in C and B/C. Moreover, the fatigue life gained an increase with the increase in the fracture energy, loading frequency, and Me in the nonlinear trend. The utmost variation of fatigue life was explained with the increase of fracture energy which had the greatest effect in mode‐III loading.

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Section: Procedures and Materials Specificationsmentioning

confidence: 99%

Predicting fracture behavior (mixed‐modes I/III) of cement asphalt mortar under fatigue and static loading conditions using response surface method

Najjar,

Mohammadzadeh Moghaddam,

Sahaf

et al. 2023

Fatigue Fract Eng Mat Struct

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent years, several researchers have used different laboratory tests including the semicircular bending (SCB) test, 20–28 the dissipated creep strain energy (DCSE) test, 29 the disc‐shaped compact tension (DCT) test, 30,31 the edge notch disc bend (ENDB) test, 32–39 and so on 40,41 for investigating and analyzing the fracture behavior of asphalt mixtures. However, many of these laboratory tests cannot simulate exactly the cracking mechanism of real asphalt mixture in the field 23,36,42–53 . On the other hand, employment of laboratory samples in the real scale of pavement layers and subjected to actual traffic loading is impossible or at least is a very expensive and time‐consuming process.…”

Section: Introductionmentioning

confidence: 99%

“…However, many of these laboratory tests cannot simulate exactly the cracking mechanism of real asphalt mixture in the field. 23,36,[42][43][44][45][46][47][48][49][50][51][52][53] On the other hand, employment of laboratory samples in the real scale of pavement layers and subjected to actual traffic loading is impossible or at least is a very expensive and time-consuming process. Therefore, utilizing numerical analyses can be used as a suitable method to study the fracture behavior of the cracked asphalt pavement.…”

Section: Introductionmentioning

confidence: 99%

Mixed mode I+II fracture parameters and cracking trajectory of heterogeneous multilayer pavement structure containing reflective crack

Ziari

Aliha

Fard

et al. 2022

Fatigue Fract Eng Mat Struct

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Using aggregate generation and packing algorithm technique coupled with finite element method, a part of reconstructed asphalt pavement structure with five layers and containing a bottom-up crack was simulated. For more realistic modeling and more accurate analyzing the cracking behavior of pavement, a region surrounding the initial crack (and bottom-up crack) region and its neighborhood was modeled as a heterogeneous two-phase (aggregate/mastic) mixture. The results of numerical analyses showed that a significant difference exists between the crack tip fracture parameters (i.e., K I , K II , K eff , T-stress, and Biaxiality ratio) of the homogenous and heterogeneous models. The heterogeneous simulation (in this case study) leads to approximately 70% reduction in the effective stress intensity factor. Furthermore, it was shown that the fracture trajectory of a simulative reflective cracking (SRC) test conducted on a real bilayer asphalt beam sample can be predicted well by modeling the beam layers as a heterogeneous two-phase mixture. K E Y W O R D Saggregate generation and packing algorithms, bottom-up crack, finite element method, fracture parameters, reflective cracking trajectory, two-phase heterogeneous asphalt modeling

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On the Statistical Prediction of KIc and GIc for Railway Andesite Ballast Rock Using Different Three-Point Bend Disc Samples

et al. 2023

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Aging effect on the mixed-mode (I/III) fracture toughness of cement emulsified asphalt composite: Experimental and statistical investigation

Cited by 19 publications

References 66 publications

Predicting fracture behavior (mixed‐modes I/III) of cement asphalt mortar under fatigue and static loading conditions using response surface method

Predicting fracture behavior (mixed‐modes I/III) of cement asphalt mortar under fatigue and static loading conditions using response surface method

Mixed mode I+II fracture parameters and cracking trajectory of heterogeneous multilayer pavement structure containing reflective crack

On the Statistical Prediction of KIc and GIc for Railway Andesite Ballast Rock Using Different Three-Point Bend Disc Samples

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