scholarly journals Studi Karakteristik Campuran Aspal Beton Lapis Aus (AC-WC) Menggunakan Aspal Penetrasi 60/70 dengan Penambahan Lateks

2016 ◽  
Vol 22 (2) ◽  
pp. 77
Author(s):  
I Nyoman Arya Thanaya ◽  
I Gusti Raka Puranto ◽  
I Nyoman Sapta Nugraha
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Binder ◽  
Rubber Content ◽  
Resistance To Deformation ◽  
Dynamic Creep ◽  
Asphalt Content ◽  
The Stability ◽  
Creep Loading

Asphalt on pavement in long term may undergo hardening, so it needs addition of additive that can make it remain flexible. This experiment tried to produce asphalt concrete wearing course (AC-WC) using asphalt penetration 60/70 with the addition of latex, with aim to know the characteristic of AC-WC mix at the optimum of asphalt content with addition of  latex in variation of 0%, 2%, 4%, 6%, 8%, and 10% of the total binder. Latex was initially mixed with the asphalt, then the aggregates were proportioned based on ideal grading. The samples were produced in hotmix process. The density of latex was found 0.977 with dry rubber content of 61.95%. The optimum of asphalt content that was 5.7%, where all Marshall characteristics were met. It was chosen the mix with 4% latex by total binder where all properties of asphalt binder were still met. It was obtained that the Stability value  was 1439.26 kg (≥ 800 kg), Flow 3.84 mm (2-4 mm), Marshall Quotient 379.66 kg / mm (≥ 250 kg / mm), VIM  4.437% (3-5%), VMA 15.280% (≥ 15%), VFB 70.961 (≥ 65%). The mixture that contains latex had better resistance to deformation under dynamic creep loading at 40 °C.

Quantification of the Effect of Binder Source on Flexibility of Long-Term Aged Asphalt Concrete

2020 ◽  
Vol 2674 (9) ◽  
pp. 605-616
Author(s):  
Zehui Zhu ◽  
Punit Singhvi ◽  
Uthman Mohamed Ali ◽  
Hasan Ozer ◽  
Imad L. Al-Qadi
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Binder ◽  
Rheological Parameters ◽  
Index Test ◽  
Performance Grade ◽  
Aged Asphalt ◽  
Aging Conditions ◽  
Aged Binder ◽  
Flexibility Index

Asphalt concrete (AC) aging reduces the resistance of flexible pavements to fatigue, thermal, and block cracking. Therefore, it is critical to understand the effects of AC aging on flexible pavement serviceability. Binder source has a significant effect on AC long-term aging. Therefore, it is necessary to develop a reliable, practical, and systematic method to quantify the effect of binder source on AC cracking resistance. Seven laboratory mixes were designed and produced at three asphalt binder replacement (ABR) levels using various binders, but same binder performance grade (PG). The AC mixes were tested using the Illinois Flexibility Index Test (I-FIT) under unaged and long-term aged conditions. Standard Superpave tests and temperature-frequency sweep tests, were conducted on virgin binders under various aging conditions. By comparing the binder rheological parameters and flexibility index (FI) of long-term aged AC specimens, the [Formula: see text] and m-value after 40-h of aging using a pressure aging vessel (PAV) were identified as valid indicators to reflect the effects of the binder source on AC long-term flexibility. A minimum [Formula: see text] of -8°C and m-value of 0.280 were proposed as the preliminary thresholds. A new parameter, [Formula: see text], which is defined as the m-value of 20-h PAV-aged binder minus the m-value of a 40-h PAV-aged binder, correlates well with the aging rate of AC. A binder with a high [Formula: see text] may induce an excessive drop in flexibility after long-term aging.

scholarly journals Assessing the Ageing Impact on Fatigue Life of Asphalt Concrete

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Saad Issa Sarsam
Keyword(s):  
Fatigue Life ◽  
Asphalt Concrete ◽  
Concrete Slab ◽  
Testing Temperature ◽  
Environmental Condition ◽  
Ageing Processes ◽  
Before And After ◽  
Short And Long Term ◽  
Asphalt Content

The fatigue life of asphalt concrete is often related to environmental condition, loading condition, ageing, material composition and  properties. This work investigates the influence of short and long term ageing of laboratory beam specimens, asphalt content, and testing temperature on fatigue life of asphalt concrete wearing course. Slab samples of (30 x 40x 6) cm have been prepared, beam specimens of (40x 5x 6) cm were cut from the asphalt concrete slab samples. Beam specimens were tested for fatigue life under the influence of three levels of micro strain (250, 400, and [3]750) at (5, 20, and 30) °C before and after practicing long-term aging. It was observed that the fatigue life decreases by (85 and 97) %, (87.5 and 97.4) %, (71.4 and 95.2) % after increasing the applied microstrain from (250 to 400 and 750) μƐ for control mixture and for mixtures subjected to short-and long-term ageing processes respectively. The fatigue life increases by (142.8 and 257.1) %, (34.4 and 57.8) % and (10 and 30) % when the asphalt content increases from (4.4 to 4.9 and 5.4) % for specimens practicing the applied microstrain of (250, 400 and 750) μƐ respectively. It was concluded that the fatigue life increases by a range of (two to fifteen) folds when the testing temperature increases from (5 to 20 and 30)°C respectively.

scholarly journals Improving The Performance of Asphalt Concrete Mixtures With Polymer Asphalt in Submerged Floods

2021 ◽  
Vol 2 (02) ◽  
pp. 62-69
Author(s):  
Yanuar Setiawan ◽  
Erlina Yanuarini ◽  
Nunung Martina ◽  
Muhammad Fathur Rouf Hasan ◽  
Rinawati Rinawati
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Water Immersion ◽  
The Road ◽  
Concrete Mixtures ◽  
Asphalt Content ◽  
The Difference ◽  
The Stability

The road conditions which is always submerged can reduce the performance of the asphalt pavement. This research was conducted to obtain the characteristics of polymer asphalt concrete against flooding. Marshall testing was carried out on conventional and polymer asphalt concrete with optimum asphalt content treated with water immersion in variations of 0 days, 0.5 days, 1 day, 2 days, and 4 days. The results show polymer asphalt can improve the durability of asphalt concrete which is submerged in floodwater. This is indicated by the difference in the stability value of 113% in the variation of immersion for 4 days.

Long-Term Oven-Aging Effects on Fatigue and Initial Stiffness of Asphalt Concrete

1997 ◽  
Vol 1590 (1) ◽  
pp. 89-98 ◽  
Author(s):  
John Harvey ◽  
Bor-Wen Tsai
Keyword(s):  
Fatigue Life ◽  
Asphalt Concrete ◽  
Void Content ◽  
Aging Effects ◽  
Initial Stiffness ◽  
Asphalt Content ◽  
Flexural Beam ◽  
Air Void ◽  
Air Void Content

An investigation of the effects of long-term oven aging (LTOA) on initial stiffness and fatigue of asphalt concrete was made using two typical California asphalts, known to have different aging characteristics, in mixes with one aggregate. Asphalt content, air-voids content, and days of LTOA were varied independently. Stiffness and fatigue were evaluated using the controlled-strain flexural beam test developed by the Strategic Highway Research Program Project A-003A. The results indicated that both mixes exhibited an increase in initial stiffness with LTOA periods of up to six days. The sensitivity of beam fatigue life to LTOA depended on the asphalt. Beams containing Valley asphalt had virtually no change in fatigue life due to LTOA, whereas beams with Coastal asphalt showed some sensitivity to LTOA. For both asphalts, the average reduction in fatigue life from 6 days of LTOA was less than that caused by a 3 percent increase in air-void content or a 1 percent decrease in asphalt content. Simulations of thick and thin pavement structures were performed to reconcile the effects of LTOA, asphalt content, and air-void content on mix fatigue life and stiffness by evaluating their combined effects on predicted pavement fatigue life. The simulations indicated that aging, as induced by LTOA, increased fatigue life for all cases except one.

scholarly journals Influence of Water Immersion on Stability of AC-WC Mixed with Gondorukem Additional Material

2021 ◽  
Vol 921 (1) ◽  
pp. 012067
Author(s):  
D R G Kabo ◽  
M Tumpu ◽  
H Parung
Keyword(s):  
Asphalt Concrete ◽  
Immersion Time ◽  
Water Immersion ◽  
Asphalt Mixtures ◽  
Additional Material ◽  
Influence Of Water ◽  
Asphalt Content ◽  
The Stability ◽  
Marshall Stability ◽  
Time Decrease

Abstract One of the treatments that can be given to asphalt mixtures to determine the durability of the mixture is by water immersion. This study aims to analyze the stability value of Marshall mixture of AC-WC (Asphalt Concrete Wearing Course) by using modified Asbuton as a binder and gondorukem as added material due to water immersion. The method used in this research is experimental in the laboratory. AC-WC mixture is produced using modified Asbuton as a binder (Retona Blend 55) at optimum asphalt content of 6.25% and gondorukem as an additive at 0.0% and 2.5% content. The treatment given to the mixture is by soaking water for 0, 1, 3 and 7 days. The treatment given to the mixture is by soaking water for 0, 1, 3 and 7 days. The results showed that the Marshall stability value decreased with increasing water immersion time. Decrease in Marshall stability values that occur in specimens with immersion time of 1, 3 and 7 days for specimens without immersion are 21.34%, 25.56% and 28.25%, respectively.

scholarly journals Pengaruh Penuaan Aspal Pada Karakteristik Campuran Beton Aspal Lapis Aus AC – WC

2020 ◽  
pp. 47-56
Author(s):  
M. Mashuri ◽  
R. Rahman
Keyword(s):  
Environmental Factors ◽  
Air Temperature ◽  
Asphalt Concrete ◽  
Aging Process ◽  
Short Term ◽  
The Road ◽  
Service Period ◽  
Asphalt Content ◽  
Pavement Layers

The aging process of asphalt in the pavement layers of asphalt concrete road occurs when mixing in the Asphalt Mixing Plant and during the road service period. The asphalt aging process when mixing is called short-term aging and aging during the road service period is called long-term aging. AC - WC mixture is a wear layer and it is on the top layer of the surface which allows characteristics change that are influenced by several environmental factors (air, temperature and sunlight). This study aims to know the effect of asphalt aging on the characteristics of AC - WC mixture with Marshall method on some asphalt content  that are 4.5%, 5.0%, 5.5%, 6.0%, 6, 5% and 7.0%. For testing on short-term aging (Short - Term Oven Aging, STOA) is by testing the mixture specimen AC - WC at 135o C before solidified for 4 hours and for long-term aging (Long - Term Oven Aging, LTOA) was carried out by testing the mixture specimen AC - WC at 85o C for 2 - 5 days. The results of this study found that asphalt aging had an effect on the characteristics of AC - WC mixture. Values of density, VFB, stability, flow tend to decrease with age. While VIM and VMA values tend to increase with age. Aging caused the mixture to became more rigid.

scholarly journals Performance of Charcoal Coconut Shell Ash in the Asphalt Mixture under Long Term Aging

2019 ◽  
Vol 8 (3S3) ◽  
pp. 383-387
Keyword(s):  
Resilient Modulus ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Coconut Shell ◽  
The Road ◽  
Dynamic Creep ◽  
Coconut Shell Ash ◽  
The Stability ◽  
Marshall Stability

Improvement in transportation system is never been as easy as just providing links for better connection and network but more to do with the pavement quality of the road itself. Modification with agriculture waste is just another approach to enhance the performance of asphaltic concrete. In this study, a non-traditional bitumen modifier from a coconut shell which is the charcoal coconut shell ash (CCSA) was used. Addition of CCSA in bitumen with 0%, 2%, 4%, 6%, and 8% by weight of bitumen were investigated along with the laboratory stimulation of aging was applied in this study. Properties of modified asphalt mixture were determined using resilient modulus, dynamic creep and Marshall Stability test.. Results of samples with CCSA which underwent aging show some improvement in terms of the stability and permanent deformation characteristics. Resilient modulus, dynamic creep and Marshall Stability tests recorded the highest rates when compared to controlled sample. Hence, for more durable asphalt concrete and high serviceability it is recommended to use 2% to 4% of CCSA.

scholarly journals Prediction of Longitudinal Cracking of Asphalt Pavements

2019 ◽  
Vol 8 (3) ◽  
pp. 2310-2313
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Binder ◽  
Binder Content ◽  
Least Square ◽  
Traffic Load ◽  
Asphalt Pavements ◽  
Stiffness Modulus ◽  
Longitudinal Cracking ◽  
Linear Least Square

Longitudinal cracking is one of the major structural distresses of asphalt pavement. These cracks appear on the pavement along the direction of moving traffic. This study makes an attempt to predict the extent of longitudinal cracking based on three parameters which are: asphalt binder content, traffic load repetitions and asphalt stiffness modulus. For the study, the data has been used from Long Term Pavement Performance (LTPP) database. Linear Least Square (LLS) regression method is employed to model the observed trends between the longitudinal cracking and the three parameters. The results of the analyses has shown that longitudinal cracking vary linearly with respect to each parameter. It is observed that (i) longitudinal cracking decreases linearly with increase in percentage asphalt binder content in asphalt concrete (ii) longitudinal cracking increases linearly with increasing traffic load repetitions and (iii) longitudinal cracking decreases linearly with increase in stiffness modulus of asphalt concrete.

scholarly journals Perencanaan Campuran Lapis Aspal Beton Permukaan Dengan Asbuton Butir Sebagai Filler

2018 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Surat Surat ◽  
Rifanie Gazalie ◽  
Pazilatul Mumamiroh
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Experimental Results ◽  
Crushed Stone ◽  
Marshall Test ◽  
Asphalt Content ◽  
The Stability

The objective of this research was to use mineral in asbuton as filler and asphalt will be taken into account to reduce the use of oil asphalt in Asphalt Concrete Wearing Course. The material used in this research was aggregate crushed stone from Katunun Mountain, Tanah Laut Regency, South Kalimantan, asphalt Pen 60/70 production of Pertamina and Asbuton grade 15/20. Use of Asbuton 7% in Asphalt Concrete Wearing Course mixture with optimum asphalt content   of 5.25% mixed properties of  VIM 3.5%, VMA 15.7%, VFB 77,9%, Stability 1484 kg,         Flow 3.3 mm, VIM PRD 3.0%, Stability  remaining 90.8% obtained. At the optimum asphalt content of 5.25%, mixed experiments with Asbuton grains were varied, 5.0%, 9.0%, 11.0% and 13.0%. The Marshall test showed that the greater the addition of Asbuton, the higher the stability value, the sequential stability value of 1058 kg, 1449 kg, 1509 kg and 1600 kg. Flow range from 3.1 mm to 3.5 mm. The VIM 3.5% up to 5.6%, VMA 15.75% up to 16.87%, VFB 68.1% up to 71.9%. The experimental results with Marshall testing of the asphalt mixture qualities meet the Asphalt Concrete Wearing Course criteria.

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