Investigating Fatigue Behavior of Nanoclay and Nano Hydrated Lime Modified Bitumen Using LAS Test

2016 ◽  
Vol 28 (3) ◽  
pp. 04015136 ◽  
Author(s):  
Amir Kavussi ◽  
Peyman Barghabany
Keyword(s):  
Fatigue Behavior ◽  
Hydrated Lime ◽  
Modified Bitumen

Evaluating the effect of laboratory aging on fatigue behavior of asphalt mixtures containing hydrated lime

2018 ◽  
Vol 164 ◽  
pp. 655-662 ◽  
Author(s):  
Amir Rasouli ◽  
Amir Kavussi ◽  
Morteza Jalili Qazizadeh ◽  
Amir Hossein Taghikhani
Keyword(s):  
Fatigue Behavior ◽  
Hydrated Lime ◽  
Asphalt Mixtures

scholarly journals Analysis of Fatigue and Healing Properties of Conventional Bitumen and Bio-Binder for Road Pavements

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 420 ◽  
Author(s):  
Elena Gaudenzi ◽  
Fabrizio Cardone ◽  
Xiaohu Lu ◽  
Francesco Canestrari
Keyword(s):  
Experimental Approach ◽  
Fatigue Behavior ◽  
Self Healing ◽  
Aged Condition ◽  
Temperature Dependent ◽  
Modified Bitumen ◽  
Complex Issue ◽  
Rheological Measurements ◽  
Bio Oil ◽  
Bituminous Binders

The analysis of fatigue behavior of bituminous binders is a complex issue due to several time-temperature dependent phenomena which interact simultaneously, such as damage accumulation, viscoelasticity, thixotropy, and healing. The present research involves rheological measurements aimed at evaluating the fatigue behavior and compares the self-healing capability of two plain bitumen and a bio-binder obtained by partially replacing one of the plain bitumen with a renewable bio-oil. Healing potential was assessed by means of an experimental approach previously implemented for modified bitumen and bituminous mastic and based on the use of a dynamic shear rheometer (DSR). The effects of some variables such as bitumen type, bio-oil addition, and aging on the healing potential of binders were taken into account. Results showed that the above-mentioned method for healing analysis is also suitable for conventional and bio-add binders. Outcomes of the experimental investigation highlight that fatigue and self-healing are mainly dependent on binder consistency and also affected by aging. Finally, the addition of bio-oil may induce even better performances in terms of healing potential compared to conventional bitumen, especially in aged condition.

Laboratory investigation of modified bitumen for interlayer in rigid–flexible composite pavement

2020 ◽  
pp. 089270572093914 ◽  
Author(s):  
Gholamali Shafabakhsh ◽  
Saeed Ahmadi
Keyword(s):  
Shear Strength ◽  
Hydrated Lime ◽  
Crumb Rubber ◽  
Modified Bitumen ◽  
Direct Shear Tests ◽  
Application Rates ◽  
Shear Fatigue ◽  
Tack Coat ◽  
Bonding Properties ◽  
And Performance

Adhesion of composite pavement plays a significant role in the durability and maintenance of this type of pavement. The present research aims to assess the bonding and fatigue performance of rigid–flexible composite pavements through laboratory testing at different tack coat application rates. Three types of modified bitumen, crumb rubber-modified bitumen containing hydrated lime (CR/HL), crumb rubber-modified bitumen containing natural zeolite (CR/NZ), and crumb rubber-modified bitumen (CRMB), were selected as the tack coat. Shear fatigue and direct shear tests were utilized to assess the bonding properties of tack coats. The study also examines the behavior of modified bitumen by examining its viscosity, rheological properties, and performance grade. The results show that CR/NZ exhibits better performance in rheological behavior and at various temperatures compared to CR/HL and CRMB. Also, depending on the type of tack coat, shear strength tests show a range of 0.6–0.9 l m−2 as the optimal tack coat dosage. Finally, based on the optimal tack coat, shear strength ratings for various bitumen types may be classified as CRMB < CR/HL < CR/NZ.

EXPERIMENTAL EVALUATION OF ANTI-STRIPPING ADDITIVES ON POROUS ASPHALT MIXTURES

2016 ◽  
Vol 78 (7-2) ◽  
Author(s):  
Nurul Athma Mohd Shukry ◽  
Norhidayah Abdul Hassan ◽  
Mohd Rosli Hainin ◽  
Mohd Ezree Abdullah ◽  
Nor Asniza Mohamed Abdullah ◽  
...  
Keyword(s):  
Resilient Modulus ◽  
Asphalt Mixture ◽  
Hydrated Lime ◽  
Modified Bitumen ◽  
Air Voids ◽  
Porous Asphalt ◽  
Abrasion Loss ◽  
Asphalt Mix ◽  
Strength And Durability ◽  
Permeability Rate

The open structure of porous asphalt mix influences its strength and durability against air, water and clogging materials. These factors cause loss of adhesion between binder-aggregate interface and loss of cohesion within the binder film.  This could lead to stripping problem which contribute to premature failures as well as deterioration in the performance and service life of porous asphalt. Therefore, this study is aimed to evaluate the potential of diatomite as anti-stripping additives in porous asphalt and compared with hydrated lime and Ordinary Portland Cement (OPC). Field Emission Scanning Electron Microscopy (SEM) test and Energy Dispersive X-ray Spectroscopy analysis (EDX) were conducted to investigate the microstructure and chemical composition of the anti-stripping additives. A number of gyratory compacted samples of porous asphalt mixture with Malaysian gradation were prepared. Each sample was incorporated with 2% of anti-stripping additives as filler then mixed with polymer modified bitumen of PG76. The samples were measured for air voids content, permeability rate, resilient modulus and abrasion loss. The results indicate that samples prepared with hydrated lime show higher permeability rate and lower abrasion loss compared to samples with OPC and diatomite. However, the samples prepared with diatomite show enhanced resilient modulus compared to those with hydrated lime and OPC.

Evaluation of Type C Fly Ash in Cold In-Place Recycling

1997 ◽  
Vol 1583 (1) ◽  
pp. 82-90 ◽  
Author(s):  
Stephen A. Cross ◽  
David A. Young
Keyword(s):  
Fly Ash ◽  
Field Test ◽  
Fatigue Behavior ◽  
Hydrated Lime ◽  
Ash Content ◽  
Asphalt Emulsion ◽  
Moisture Sensitivity ◽  
Reclaimed Asphalt ◽  
Freeze Thaw ◽  
Type C

The Kansas Department of Transportation has developed an innovative method of rehabilitating low-volume pavements using cold in-place recycling (CIR) and Type C fly ash. Previous field test sections have indicated that fly ash improves constructability and moisture sensitivity. However, the same field test sections have exhibited increased cracking with increased fly ash content and a drop in pavement modulus with time. A laboratory study was undertaken to evaluate the effect of fly ash content on CIR. Reclaimed asphalt pavement (RAP) was mixed with 3, 7, 11, and 15 percent Type C fly ash and the fatigue life, durability, freeze-thaw resistance, and thermal cracking potential of laboratory-compacted samples were evaluated. RAP mixed with asphalt emulsion and asphalt emulsion with hydrated lime were evaluated as well. The results indicated that 7 to 11 percent Type C fly ash provided optimal laboratory freeze-thaw and moisture sensitivity performance. Increasing the fly ash content resulted in a brittle fatigue behavior as well as an increased thermal fracture temperature. AASHTO T283 is recommended for selecting the optimum fly ash content.

Effect of Mineral Fillers on Fatigue Resistance and Fundamental Material Characteristics: Mechanistic Evaluation

2003 ◽  
Vol 1832 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Yong-Rak Kim ◽  
Dallas N. Little ◽  
Injun Song
Keyword(s):  
Fatigue Resistance ◽  
Damage Mechanics ◽  
Fatigue Behavior ◽  
Continuum Damage Mechanics ◽  
Hydrated Lime ◽  
Mechanical Tests ◽  
Asphalt Binders ◽  
Test Results ◽  
Linear Viscoelastic ◽  
Mineral Fillers

Complex characteristics of fatigue behavior were evaluated on the basis of test results and their mechanical analyses. The dynamic shear rheometer was used to characterize fundamental linear viscoelastic properties of asphalt binders and mastics. Various dynamic mechanical tests using cylindrical sand–asphalt samples mixed with pure binders, mastics, or both were also performed to estimate viscoelastic characteristics and fatigue behavior. To assess the filler effect, two distinctly compositionally different asphalt binders, AAD-1 and AAM-1, and two fillers, limestone and hydrated lime, were selected. Test results were analyzed using viscoelastic theory, a fatigue prediction model based on continuum damage mechanics, and a rheological composite model. The role of fillers in fatigue resistance was quantified, and induced mechanisms due to filler addition were investigated. The effect of hydrated lime, which is highly binder specific, as a filler was further discussed by comparing test results from hydrated lime filler and test results from limestone filler.

scholarly journals Effect of Glass Cullet Size and Hydrated Lime—Nanoclay Additives on the Mechanical Properties of Glassphalt Concrete

2021 ◽  
Vol 13 (23) ◽  
pp. 13284
Author(s):  
Cansu İskender ◽  
Erol İskender ◽  
Atakan Aksoy ◽  
Celaleddin Ensar Şengül
Keyword(s):  
Mechanical Properties ◽  
Aggregate Size ◽  
Hydrated Lime ◽  
Asphalt Mixtures ◽  
Modified Bitumen ◽  
Glass Aggregate ◽  
Indirect Tensile ◽  
Water Damage ◽  
Wheel Tracking ◽  
Hamburg Wheel Tracking

In this study, the use of glass waste as aggregate in asphalt mixtures was investigated. Maximum glass aggregate size options of 0.075, 2.00, 4.75 and 9.5 mm. were selected. Conventional bitumen, nanoclay-modified bitumen and hydrated lime-modified bitumen were used. Dense graded asphalt mixtures were designed according to the Marshall method. Mixtures were evaluated for low-temperature cracking, resistance to water damage, fatigue, and permanent deformation behavior with repeated creep, indirect tensile strength, indirect tensile fatigue, modified Lottman and Hamburg wheel tracking tests. Increasing glass aggregate size reduced the water damage resistance of asphalt mixtures because of the smooth surface of the glass particles and nanoclay and hydrated lime modification improved the mechanical properties of the asphalt mixtures. Using 2.00 mm sized maximum glass aggregate showed relatively less water damage and deformation properties due to higher internal friction which is due to the greater angularity of the glass particles. In addition, there was a significant correlation between repeated creep test, modified Lottman methods and Hamburg Wheel tracking test from the viewpoint of deformation and water damage assessments.

Sign in / Sign up

Export Citation Format

Share Document