Mix Design Practices for Warm-Mix Asphalt

2011 ◽  
Author(s):  
Ramon Bonaquist ◽  
◽  
◽  
Keyword(s):  
Warm Mix Asphalt ◽  
Mix Design ◽  
Design Practices

Mix Design Practices for Cold In-Place Recycled Pavements

2009 ◽  
pp. 44-44-21 ◽  
Author(s):  
T Scholz ◽  
RG Hicks ◽  
D Allen
Keyword(s):  
Mix Design ◽  
Design Practices

Study on Design Method of Warm Mix Asphalt

2011 ◽  
Vol 374-377 ◽  
pp. 1813-1816
Author(s):  
Chun Wang ◽  
Pei Wen Hao ◽  
Rui Xia Li ◽  
Qing Zhang
Keyword(s):  
Design Method ◽  
Temperature Stability ◽  
Warm Mix Asphalt ◽  
Test Method ◽  
Mix Design ◽  
High Temperature Stability ◽  
Marshall Test ◽  
Different Types ◽  
Low Temperature Cracking ◽  
Resistance Performance

The paper studied on the mix design method of two different warm mix asphalt adopted Marshall test and SGC(Superpave Gyratory Conpactor) test, and analysed their differences of high temperature stability, low temperature cracking resistance performance. The results show that, for different types of warm mix asphalt, it should be taken a different test method to design. It was recommended that the design of warm mix asphalt based on surface activity agent should use Marshall method, and warm mix asphalt with the addition of organic agent should use SGC method.

Warm Mix Asphalt Technology: A Review

2014 ◽  
Vol 71 (3) ◽  
Author(s):  
Mohd Ezree Abdullah ◽  
Kemas Ahmad Zamhari ◽  
Rosnawati Buhari ◽  
Siti Khatijah Abu Bakar ◽  
Nurul Hidayah Mohd Kamaruddin ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Warm Mix Asphalt ◽  
Mix Design ◽  
Asphalt Binders ◽  
Different Types ◽  
Performance Issues

Warm Mix Asphalt (WMA) represents the technologies that allow the reducing of asphalt binders’ mixing and compaction temperatures by reducing its binders’ viscosity. This paper gives a comprehensive chronological review from prior researches and practical experienced among researchers and industrial practitioners while implementing WMA technology including constituent materials, mix design and mechanical performance issues. Within this, the problems and benefits as well as different types of WMA additives were clearly identified as essential for a better understanding of the application of WMA technology in pavement constructions.

scholarly journals LABORATORY INVESTIGATION OF COAL BOTTOM ASH MODIFIED WARM MIX ASPHALT

2021 ◽  
Vol 83 (4) ◽  
pp. 63-74
Author(s):  
Zulfiqar Ali Jattak ◽  
Norhidayah Abdul Hassan ◽  
Mohd Khairul Idham Mohd Satar ◽  
Ramadhansyah Putra Jaya ◽  
‪Mohd Rosli Hainin
Keyword(s):  
Coal Combustion ◽  
Bottom Ash ◽  
Asphalt Mixture ◽  
Warm Mix Asphalt ◽  
Asphalt Mixtures ◽  
Mix Design ◽  
Chemical Additives ◽  
Air Voids ◽  
Production Temperature ◽  
Marshall Stability

Bottom Ash (BA), a coal combustion by-product, found to be a potential material when used to produce asphalt mixture. However, some of its characteristics make it a questionable material for the surface course. Therefore, this study aims to evaluate the compatibility of BA in Warm Mix Asphalt (WMA) technology through the basic mechanical properties of the asphalt mixtures for binder course layer (AC 28). Two WMA chemical additives, Cecabase RT and Evotherm 3G, were used at the concentrations of 0.3, 0.4 and 0.5% from the binder's weight. The binder properties were assessed through penetration, softening point and viscosity tests. The Marshall mix design was used to determine the optimum binder content (OBC). The additive dosage and production temperature for WMA were determined through Marshall stability, flow, air voids and specific gravity. The results show that the additives did not significantly affect the binder properties, although, at 0.4% Evotherm 3G, a drop of 17.5% in penetration was observed. Cecabase RT produced WMA with promising results but did not enhance the workability of WMA containing bottom ash (BAWMA). By lowering the production temperature of 25 °C, WMA and BAWMA at 0.4 %, Evotherm 3G demonstrated comparable workability to the conventional Hot Mix Asphalt (HMA). The data achieved through this study would be a guiding approach towards the application of BA in WMA technology for sustainable pavements.

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