Performance and Evaluation on Marshall Stability Properties of Warm Mix Asphalt Using Evotherm and Cecabase Rt®-A Chemical Additive

2014 ◽  
Vol 12 (8) ◽  
pp. 406-410 ◽  
Author(s):  
Manjunath K.R ◽  
◽  
Dheeraj Kumar N ◽  
Thippeswamy G.S
Keyword(s):  
Warm Mix Asphalt ◽  
Chemical Additive ◽  
Stability Properties ◽  
Performance And Evaluation ◽  
Marshall Stability

scholarly journals Selecting warm mix asphalt additives by the properties of warm mix asphalt mixtures - China experience

2015 ◽  
Vol 10 (1) ◽  
pp. 79-88 ◽  
Author(s):  
Xinsheng Li ◽  
Zhaoxing Xie ◽  
Wenzhong Fan ◽  
Lili Wang ◽  
Junan Shen
Keyword(s):  
Tensile Strength ◽  
Dynamic Stability ◽  
Asphalt Concrete ◽  
Warm Mix Asphalt ◽  
Asphalt Mixtures ◽  
Air Voids ◽  
Mastic Asphalt ◽  
Stone Mastic Asphalt ◽  
Crushed Aggregate ◽  
Marshall Stability

The objective of this research was to select the most effective warm asphalt additives for mix practice based on a series of laboratory testing programs such as density, Marshall stability, freeze-thaw splitting strength, dynamic stability, and bending beam strain. The experimental design of warm mix asphalt included the use of three commonlyused additives, two typical aggregate gradations, one crushed aggregate, and one modified asphalt. Results showed that: (1) the bulk specific gravity and air voids of all the mix specimens were similar to those of controls; (2) the Marshall stability and flow values of the warm stone mastic asphalt were 6.8%–26.6% and 3.5%–10.3%% higher than those of controls, respectively, and those of the warm asphalt concrete were 6.1%–15.6% and 6.5%–9.7% higher than those of controls, respectively; (3) the indirect tensile strength of two types of mixtures was 1.7%–14.4% lower than that of controls, and the average tensile strength ratio of the warm stone mastic asphalt and asphalt concrete was 4.3% and 1.3% higher than that of controls, respectively; (4) the dynamic stability of warm mix specimens was 10.8%–16.6% lower than that of the controls; (5) the average bending failure strain of warm stone mastic asphalt was 7.6% higher than that of the controls, and that of warm asphalt concrete was 12.8% lower than that of the controls; (6) Overall, warm asphalt mixtures with Sasobit and Rediset had relatively best performances required in Southeast China, where rutting and stripping are the main failures of asphalt pavements.

scholarly journals Behavior of a warm mix asphalt using a chemical additive to foam the asphalt binder

2015 ◽  
Author(s):  
Hugo Alexander Rondón-Quintana ◽  
◽  
Wilmar Darío Fernández-Gómez ◽  
Carlos Alfonso Zafra-Mejía ◽  
◽  
...  
Keyword(s):  
Asphalt Binder ◽  
Warm Mix Asphalt ◽  
Chemical Additive

scholarly journals Application of WMA Technology to Bituminous Base Course Mixes

2018 ◽  
Vol 13 (2) ◽  
pp. 94-103 ◽  
Author(s):  
Rajan Choudhary ◽  
Asho Julaganti ◽  
Abhinay Kumar ◽  
Dipak Arjun Ugale
Keyword(s):  
Hot Mix Asphalt ◽  
Permanent Deformation ◽  
Warm Mix Asphalt ◽  
Strength Ratio ◽  
Test Results ◽  
Base Course ◽  
Marshall Stability ◽  
Rheological Test ◽  
Stability Results ◽  
Different Doses

Warm Mix Asphalt, due to lower mixing and compaction temperatures, provides some engineering benefits over conventional Hot Mix Asphalt. In this study, an attempt is made to assess the viability of using Warm Mix Asphalt technology in bituminous base courses. An organic wax-based Warm Mix Asphalt additive was used in this study to produce Dense Bituminous Macadam, a commonly used bituminous base course mix in India. Experimental variables included three additive contents and four mixing temperatures. Rheological properties of binder modified with different doses of additive were examined. In all, twelve Warm Mix Asphalt Dense Bituminous Macadam mix types were prepared, evaluated and compared with Hot Mix Asphalt Dense Bituminous Macadam (control) mix. Rheological test results showed the addition of wax-based additive improved stiffness and resistance against permanent deformation of the base binder. Tensile Strength Ratio and retained Marshall Stability results indicated that Warm Mix Asphalt Dense Bituminous Macadam mixes were resistant to moisture-induced damage.

Marshall stability properties of asphalt mixture incorporating black rice husk ash

2018 ◽  
Vol 5 (10) ◽  
pp. 22056-22062 ◽  
Author(s):  
Ramadhansyah Putra Jaya ◽  
Mohd Rosli Hainin ◽  
Norhidayah Abdul Hassan ◽  
Haryati Yaacob ◽  
Mohd Khairul Idham Mohd Satar ◽  
...  
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Asphalt Mixture ◽  
Black Rice ◽  
Stability Properties ◽  
Marshall Stability

scholarly journals Influence of Different Warm Mix Additives on Characteristics of Warm Mix Asphalt

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3534
Author(s):  
Anda Ligia Belc ◽  
Erdem Coleri ◽  
Florin Belc ◽  
Ciprian Costescu
Keyword(s):  
Asphalt Mixture ◽  
Warm Mix Asphalt ◽  
Organic Additive ◽  
Climatic Conditions ◽  
Organic Additives ◽  
Chemical Additive ◽  
Warm Mix Additives ◽  
Long Term Performance ◽  
Term Performance

The interest in minimising fuel consumption and greenhouse gas emissions among road specialists is increasing. Thus, methods for reducing asphalt concrete mixing and compaction temperatures by a few tens of degrees Celsius without compromising the long-term performance has become a topic of significant interest. This study is focused on the analysis of warm mix asphalt (WMA) prepared with locally available materials in order to determine the suitable technology applicable to the specific traffic and climatic conditions of Romania. WMA was prepared using different warm mix additives (organic additives, chemical additive, and synthetic zeolite) at different mixing and compaction temperatures, and bitumen blends with these additives were analysed by carrying out the dynamic shear rheometer test and evaluating the penetration index. In conclusion it was noted that most additives did not lead to a significant change of bitumen`s characteristics, but the organic additive had a big influence on the bitumen`s properties. The characteristics of WMA are very similar to those of HMA. The mixing and compaction temperatures could be reduced by approximately 40 °C when WMA was blended with the additives without compromising the performance of the asphalt mixture, compared to hot mix asphalt.

scholarly journals Environmental Impact Assessment of Different Warm Mix Asphalts

2021 ◽  
Vol 13 (21) ◽  
pp. 11869
Author(s):  
Anda Ligia Belc ◽  
Adrian Ciutina ◽  
Raluca Buzatu ◽  
Florin Belc ◽  
Ciprian Costescu
Keyword(s):  
Environmental Impact ◽  
Hot Mix Asphalt ◽  
Raw Materials ◽  
Asphalt Mixture ◽  
Warm Mix Asphalt ◽  
Organic Additive ◽  
Asphalt Mixtures ◽  
Organic Additives ◽  
Chemical Additive ◽  
Production Phase

Within the last decade, much attention has been focused on determining viable techniques for producing sustainable asphalt mixtures and minimizing fuel use and greenhouse gas emissions. Thus, warm mix asphalt (WMA) has become a topic of significant interest among road specialists as it offers a potential solution for reducing the environmental impact of the asphalt mixtures due to the decreased temperatures they require for mixing and compaction compared to hot mix asphalt (HMA). The present study is focused on the Life Cycle Assessment (LCA), according to a “Cradle-to-Gate” approach, of hot mix asphalt and warm mix asphalt prepared with locally available materials and different warm mix additives such as organic additives, chemical additive, and synthetic zeolite. For the analysis of the environmental impact of the warm mix asphalts was used a dedicated software for modeling and evaluating the LCA. The WMA prepared with chemical additive or organic additive led to a decrease of the environmental impact, in the production phase, compared to HMA. The study reveals that the raw materials extraction has the greatest impact on the environment in all studied cases, followed by the actual production phase of the asphalt mixture. For WMA produced with additives there was a decrease in the global impact on the environment compared to HMA.

scholarly journals Laboratory comparative assessment of warm and hot mixes Asphalt containing reclaimed Asphalt pavement

2020 ◽  
Vol 8 (2) ◽  
pp. 15-26
Author(s):  
Hasan H Joni ◽  
Aqeel Y M Alkhafaji
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Warm Mix Asphalt ◽  
Asphalt Mixtures ◽  
Reclaimed Asphalt Pavement ◽  
Moisture Resistance ◽  
Recycled Asphalt ◽  
Reclaimed Asphalt ◽  
Marshall Stability ◽  
The Impact

Warm mix Asphalt (WMA) could be mixed and used in paving at low temperatures to minimize the consumption of energy and the emissions of greenhouse gas. Recycled Asphalt pavement (RAP) could save Asphaltic cement and aggregate, which could achieve the better effects of recycling. However, both of the two WMA and RAP technologies have some deficiencies. Warm mix Asphalt and Reclaimed Asphalt pavement (WMA-RAP) technique may solve these issues and deficiencies when they are utilized together. This study investigated the implementations of WMA-RAP and its impacts on the performance of the Asphalt mixture. Under the framework of this study, four percentages of RAP (0%, 20%, 30%, and 40%) were added to the hot mix Asphalt (HMA) and WMA containing 4% Sasobit to study the impact of increasing RAP content on Marshall stability and moisture resistance of Asphalt mixtures. In summary, the Marshall stability of HMA and WMA mixtures is higher than the control mixtures. A small decrease in moisture resistance of both (HMA and WMA) containing RAP comparing to control mixtures Asphalt was observed, as shown by reduced the tensile strength ratios (TSR), but it is still much higher than the minimum of 80%.

scholarly journals Marshall stability properties of asphaltic concrete with kaolin clay under aging

2019 ◽  
Vol 220 ◽  
pp. 012040
Author(s):  
M R Hainin ◽  
P J Ramadhansyah ◽  
H Awang ◽  
M Khairil Azman ◽  
M R Intan Suhana ◽  
...  
Keyword(s):  
Kaolin Clay ◽  
Asphaltic Concrete ◽  
Stability Properties ◽  
Marshall Stability

scholarly journals STABILITAS MARSHALL DAN KETAHANAN DEFORMASI WARM MIX ASPHALT MENGGUNAKAN ADITIF ZYCOTHERM

2018 ◽  
Vol 14 (1) ◽  
pp. 48-61
Author(s):  
I Gusti Ngurah Widyantara ◽  
Latif Budi Suparma ◽  
Imam Muthohar
Keyword(s):  
Dynamic Stability ◽  
Hot Mix Asphalt ◽  
Warm Mix Asphalt ◽  
Deformation Velocity ◽  
Resistance To Deformation ◽  
Marshall Test ◽  
The Stability ◽  
Marshall Stability ◽  
Wheel Tracking ◽  
Specification Requirement

ABSTRACTWarm Mix Asphalt (WMA) is produced at mixing temperatures between 20°C-40°C lower than Hot Mix Asphalt (HMA). Zycotherm added ingredients is one of the additives used in Warm Mix Asphalt. This study aims to assess Marshall stability and resistance to deformation by using asphalt type AC 60/70 ex Shell and Zycotherm additives on warm asphalt mixtures. In this study, the test was carried out on a layer of (AC-WC) to four mixed variations ie HMA-0, WMA-1, WMA-2, WMA-3 with 0% Zycotherm content; 0.10%; 0.15% and 0.20%. Mixed performance is measured by Marshall and Wheel Tracking Machine (WTM) testing. Based on the result of Gyropac test, with Workability Index (WI) value approach, the mixing temperature and compaction of WMA-1, WMA-2 and WMA-3 mixture are respectively obtained temperature 130/120°C, 130/120°C and 140/130° C. The Marshall test, the stability value of all mixtures fulfilled the minimum specification requirement of 800 kg, with the greatest stability value obtained from WMA-1 mixture of 1325 kg with additive content of 0.10%. The results of the Wheel Tracking Machine (WTM) test, a mixture that has resistance to deformation is a mixture of WMA-1 has the smallest deformation value of 1.93 mm, the largest dynamic stability of 1400 traje / mm and the smallest deformation velocity of 0.030 mm / min. That the use of Zycotherm is suitable for use in AC-WC warm mixture, with the optimum value of Zycotherm 0,10%. The use of excessive Zycotherm content results in a poor AC-WC warm mixture performance.Keywords: Dynamic Stability, Marshall, Warm Mix, Wheel Tracking Machine, Zycotherm. ABSTRAKWarm Mix Asphalt (WMA) diproduksi pada suhu pencampuran antara 20°C-40°C lebih rendah daripada Hot Mix Asphalt (HMA). Bahan tambah Zycotherm merupakan salah satu aditif yang digunakan dalam Warm Mix Asphalt. Kajian ini bertujuan untuk mengkaji stabilitas Marshall dan ketahanan terhadap deformasi dengan menggunakan bahan perekat aspal jenis AC 60/70 ex Shell dan aditif Zycotherm pada campuran aspal hangat. Pada kajian ini, pengujian dilakukan pada lapis aus (AC-WC) terhadap empat variasi campuran yaitu HMA-0, WMA-1, WMA-2, WMA-3 dengan kadar Zycotherm 0%; 0,10%; 0,15% dan 0,20%. Kinerja campuran diukur berdasarkan pengujian Marshall dan Wheel Tracking Machine (WTM). Berdasarkan hasil pengujian Gyropac, dengan pendekatan nilai Workability Index (WI) diperoleh suhu pencampuran dan pemadatan campuran WMA-1, WMA-2 dan WMA-3 secara berurutan diperoleh suhu 130/120°C, 130/120°C dan 140/130°C. Pengujian Marshall diperoleh nilai stabilitas semua campuran memenuhi ketentuan spesifikasi yaitu minimum 800 kg, dengan nilai stabilitas terbesar diperoleh dari campuran WMA-1 sebesar 1325 kg dengan kadar aditif 0,10%. Hasil pengujian Wheel Tracking Machine (WTM), campuran yang memiliki ketahanan terhadap deformasi adalah campuran WMA-1 memiliki nilai deformasi yang paling kecil sebesar 1,93 mm, stabilitas dinamis terbesar sebesar 1400 lintasan/mm dan kecepatan deformasi terkecil sebesar 0,030 mm/menit. Bahwa penggunaan Zycotherm cocok digunakan pada campuran hangat AC-WC, dengan nilai optimum penggunaan Zycotherm sebanyak 0,10%. Penggunaan kadar Zycotherm yang berlebihan menghasilkan performa campuran hangat AC-WC yang kurang baik.Kata kunci: Stabilitas Dinamis, Marshall, Warm Mix, Whell Tracking Machine,  Zycotherm.

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