Influence of reclaimed asphalt content on the complex modulus of cement bitumen treated materials

2015 ◽  
pp. 589-596 ◽  
Author(s):  
C Godenzoni ◽  
A Graziani ◽  
M Bocci
Keyword(s):  
Complex Modulus ◽  
Reclaimed Asphalt ◽  
Asphalt Content

Influence of mixing procedures on the performance of asphalt mixtures with high reclaimed asphalt content

2019 ◽  
pp. 527-534
Author(s):  
A. Margaritis ◽  
G. Jacobs ◽  
N. Hasheminejad ◽  
J. Blom ◽  
W. Van den bergh
Keyword(s):  
Asphalt Mixtures ◽  
Reclaimed Asphalt ◽  
Asphalt Content

scholarly journals Characteristics of masonry block that utilizes reclaimed asphalt pavement and waste cooking oil as the binder

2019 ◽  
Vol 276 ◽  
pp. 03001
Author(s):  
I Nyoman Arya Thanaya ◽  
I Nyoman Karnata Mataram ◽  
Bayu Setiawan
Keyword(s):  
Compressive Strength ◽  
Asphalt Pavement ◽  
Waste Cooking Oil ◽  
National Standard ◽  
Reclaimed Asphalt Pavement ◽  
Aggregate Gradation ◽  
Reclaimed Asphalt ◽  
Cooking Oil ◽  
Asphalt Content ◽  
Natural Aggregates

The availability of natural aggregate is getting limited, therefore it is required new alternative materials to substitute natural aggregates. Within this experiment reclaimed asphalt pavement (RAP) was used as masonry block with waste cooking oil as the binder. The objective of this experiment was to analyze the RAP asphalt content and aggregate gradation; and the samples characteristics particularly the compressive strength of masonry block minimum of 25 kg/cm2 that meet the Indonesian national standard SNI-03-0348-1989. The asphalt content of the RAP was initially extracted and tested for its aggregate gradation and specific gravity. The RAP was added 20% sand and a certain amount of waste cooking oil and evenly mixed. After that the mixture was compacted in a mould with a Marshall hummer, with compaction cycles for 15, 25, and 35 times where each cycle consists of 3 even blows. The size of the compacted samples were 20x10x8cm. After the samples were taken out from the mould, they were heated in an oven for 12 and 24 hours at 160°C and 200°C. It was found that the minimum waste cooking oil content required 4%. The best compressive strength was found on samples compacted at 15 compaction cycles and heated at 200°C for 24 hours. The un-soaked compressive strength was 80.5 kg/cm2 and 68.67 kg/cm2 for the soaked samples. In general the compressive strength well met the minimum 25 kg/cm2. Other best characteristics was found on samples heated at 160°C for 12 hours, with lowest water absorption of 5.64% and porosity of 4.53%. The Initial Rate of Suction (IRS) was 0,25~0,45 kg/m2.minute.

scholarly journals Evaluation performance of base course mixture containing reclaimed asphalt pavement (RAP)

2018 ◽  
Vol 162 ◽  
pp. 01037 ◽  
Author(s):  
Karim Al helo ◽  
Zaynab Qasim ◽  
Ahmed Majeed
Keyword(s):  
Asphalt Pavement ◽  
Stability Test ◽  
Reclaimed Asphalt Pavement ◽  
Test Results ◽  
Reclaimed Asphalt ◽  
Superpave Gyratory Compactor ◽  
Asphalt Mix ◽  
Asphalt Content ◽  
Base Course ◽  
Durability Performance

This paper presented the effect of addition of Reclaimed Asphalt Pavement (RAP) on performance of mixture with (20%, 30%, 40% and 50%) RAP as proportion of asphalt mix. To compare with virgin mixture marshall flow and stability test was used to evaluated durability performance with (0,1,3, and 7) days immersion and Wheel Truck test was used to evaluated the resist to rutting. The best gradation and optimum asphalt content was selected according to Superpave system. Superpave Gyratory Compactor (SGC) was used to compact mixture with 100-mm diameter. The test results indicated that addition of RAP to mixes showed significant increase on resistance of Durability and Rutting.

scholarly journals Mechanical performance assessment of half warm recycled asphalt mixes containing up to 100 % RAP

2017 ◽  
Vol 7 (080) ◽  
pp. 129 ◽  
Author(s):  
J. M. Lizárraga ◽  
A. Jiménez del Barco-Carrión ◽  
A. Ramírez ◽  
P. Díaz ◽  
F. Moreno-Navarro ◽  
...  
Keyword(s):  
Hot Mix Asphalt ◽  
Mechanical Performance ◽  
Asphalt Pavement ◽  
Reclaimed Asphalt Pavement ◽  
Recycled Asphalt ◽  
Stiffness Modulus ◽  
Asphalt Mixes ◽  
Reclaimed Asphalt ◽  
Second Stage ◽  
Asphalt Content

The use of Half Warm Mixes with high Reclaimed Asphalt content (HWMRA) has the potential to generate significant environmental advantages such as the reduction in consumption of natural resources and the emission of gases into the atmosphere. This paper therefore focuses on demonstrating the viability of using these types of mixes in wearing courses. For this purpose, an HWMRA with 70 % and 100 % Reclaimed Asphalt Pavement (RAP) and emulsion were designed in the laboratory. The performance of the mixes was then assessed and compared with that of conventional Hot Mix Asphalt. In a second stage, the mixes were manufactured in-plant, and laid and compacted in an Accelerated Pavement Test track. The cores were then extracted and tested for stiffness modulus and resistance to fatigue. The results from the tests conducted with both the laboratory specimens and the cores showed that the performance of HWMRA is comparable to that of HMA. These findings encourage greater confidence in promoting the use of these types of sustainable asphalt mixes.

scholarly journals The influence of reclaimed asphalt pavement in warm mix asphalt on asphalt concrete binder course with Retona Blend 55

2019 ◽  
Vol 278 ◽  
pp. 01012
Author(s):  
Raudhah ◽  
R. Jachrizal Sumabrata ◽  
Sigit Pranowo Hadiwardoyo
Keyword(s):  
Significant Influence ◽  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Warm Mix Asphalt ◽  
Public Works ◽  
Reclaimed Asphalt Pavement ◽  
Test Results ◽  
Reclaimed Asphalt ◽  
Marshall Test ◽  
Asphalt Content

Reclaimed asphalt pavement (RAP) comprises removed pavement materials containing high-quality aggregates and asphalt which can be recycled as materials for new pavement construction. It is removed continually for reconstruction, resurfacing, and maintenance purposes, and if not recycled will become waste. This paper determines the influence of using different RAP percentages and asphalt content in warm mix asphalt on the Marshall test results for asphalt concrete binder course (AC-BC) using Retona Blend 55. The percentages of RAP are determined by analyzing the gradation of the existing aggregates in RAP and adding virgin aggregates so that it meets the standard gradation for AC-BC specified by the Ministry of Public Works and Housing. The RAP percentages in the asphalt mixes in this study are 35%, 45%, and 51.55% of total aggregates, while the asphalt contents are 5%, 6%, and 7% of the total mix. To determine the influence of RAP percentage and asphalt content, and to discover if there is any influence from the interaction between these two factors, the analysis is performed using a factorial design. The results of this study show that variation in RAP percentages in the mix has no significant influence on stability, flow, and Marshall quotient, but there is significant influence on void in mineral aggregates (VMA), void in mix (VIM), and void filled with asphalt (VFA). Correlations of 97.5%, 80%, and 95.1%, respectively show that increase in RAP percentage increases VMA and VIM and decreases VFA. The interaction between RAP percentage and asphalt content has no significant influence on Marshall test results.

scholarly journals Characteristics of the complex modulus of recycled cold mix with foamed bitumen and recycled concrete aggregate

2019 ◽  
Vol 262 ◽  
pp. 05002 ◽  
Author(s):  
Przemysław Buczyński ◽  
Marek Iwański
Keyword(s):  
Phase Angle ◽  
Complex Modulus ◽  
Asphalt Pavement ◽  
Recycled Concrete ◽  
Time Range ◽  
Concrete Aggregate ◽  
Reclaimed Asphalt Pavement ◽  
Recycled Concrete Aggregate ◽  
Reclaimed Asphalt ◽  
Foamed Bitumen

This article presents research on recycled cold mix with foamed bitumen (MCAS) containing recycled concrete aggregate. The primary concept driving this research was to determine if recycled concrete aggregate (RC) could be used as a substitute for reclaimed asphalt pavement (RAP). Recycled concrete aggregate was used in the MCAS mix in amounts ranging from 20%, 60% and 80%. The reference mix was the MCAS mix containing 50% reclaimed asphalt pavement (RAP) and virgin aggregate. Identical 0/31.5-mm continuously graded dolomite virgin aggregate was used in all mixes. 2.5% foamed bitumen (FB) and 2.0% CEM I 42.5R Portland cement (PC) were used to increase the cohesion of the mineral mix. Foamed bitumen was produced from 50/70 penetration paving bitumen. The behaviour of the recycled base course was tested in the range of cyclic sinusoidal strain with amplitude εo = 25–50 με. The tests were carried out in the (-7°C, 5°C, 13°C, 25°C, 40°C) temperature and (0.1 Hz, 0.3 Hz, 1 Hz, 3 Hz, 10 Hz, 20 Hz) loading time range. The complex modulus was tested in a direct tension-compression test on cylindrical samples (DTC-CY) in accordance with EN 12697-26. The results of the tests were used to assess the complex modulus (E*), phase angle (φ) and complex modulus components (E1) and (E2).Tests of the mixes indicate that recycled concrete aggregate can be used in recycled cold mixes in amounts of up to 80%. Increasing the amount of recycled concrete aggregate does not cause excessive stiffness of the recycled mix in comparison with the reference mix. The tests did not demonstrate a significant difference in terms of the phase angle (φ), which indicates a similar content of the viscous part and elastic part in the obtained complex modulus for the reference mix (RAP + MCAS) and the mix containing recycled concrete aggregate (RC + MCAS).

Study on the Properties of Sand Sheet Asphalt Mixture Using Old Road Pavement Milling and Asphalt Emulsion

2016 ◽  
Vol 845 ◽  
pp. 385-393
Author(s):  
I. Nyoman Arya Thanaya ◽  
I.G.R. Purbanto ◽  
I.M.S.J. Negara
Keyword(s):  
Heavy Traffic ◽  
Asphalt Mixture ◽  
Traffic Load ◽  
Asphalt Emulsion ◽  
Reclaimed Asphalt ◽  
Natural Aggregate ◽  
Road Pavement ◽  
Dynamic Creep ◽  
Asphalt Content ◽  
Sand Sheet

This paper describes experiments on sand sheet (SS) asphalt mixture utilizing reclaimed asphalt pavement (RAP) from road milling of old road pavement. Natural aggregate was added to adjust the aggregate grading to closely meet specification. The mixture was bound with asphalt emulsion cationic rapid setting (CRS), type CRS-1. The SS mix was produced by hotmix procedure, compacted with 2x50 Marshall blows. Sand sheet asphalt mixture is dedicated for low to medium trafficked road pavement. The asphalt content of the RAP was extracted, and contained 5.29%. The performance of the SS mix was compared to asphalt concrete wearing course (AC-WC), using natural aggregate and 50pen asphalt, compacted at standard of 2x75 Marshall blows. At optimum asphalt content, the Marshall properties of both mixture met specification in Indonesia. The creep performance of both mixture was closely comparable, although the SS mix was compacted at lower compaction level. According to its dynamic creep slope, the SS mix is suitable for pavement with medium traffic load at temperature > 30 o or suitable for road with heavy traffic at temperature < 30 oC. The fatigue performance of SS mix was far better than the AC-WC mix, as the SS mix contain higher asphalt content and of finer aggregate grading.

Sign in / Sign up

Export Citation Format

Share Document