Bitumen Emulsion in Malaysia–A Conspectus

2013 ◽  
Vol 65 (3) ◽  
Author(s):  
Haryati Yaacob ◽  
Mohd. Rosli Hainin ◽  
Md. Maniruzzaman A. Aziz ◽  
Naqiuddin M. Warid ◽  
Fung-Lung Chang ◽  
...  
Keyword(s):  
Permanent Deformation ◽  
Modified Bitumen ◽  
Bitumen Emulsion ◽  
Environmental Friendly ◽  
Batch Plant ◽  
Emulsifying Agent ◽  
Line Plant ◽  
Pavement Construction ◽  
Slurry Seal ◽  
Polymer Modified Bitumen

Bitumen emulsion is an important building material, especially in highway pavement construction. It is a mixture of bitumen (asphalt), water and emulsifying agent, dispersed in tiny particles in an aqueous medium. It is an important material widely used in the pavement construction ever since the first introduction in the year 1900’s. This paper aims to provide an overview and an understanding among the practitioners on the bitumen emulsion from the manufacturing process, naming and categorizing to its potential application. Bitumen emulsion can be manufactured in a batch plant or in-line plant. Being water based, it is capable to be applied under ambient temperature besides being more environmental friendly. Categorizing the bitumen emulsion is simple but the naming may differs slightly according to local specification. Continuous research also has end up in the modification of conventional bitumen emulsion using polymers to produce polymer modified bitumen (PMB) emulsion which decreases thermal susceptibility and permanent deformation (rutting). It has resulted in even wider application of bitumen emulsion as in microsurfacing, slurry seal and cape seal.

The Influence of Crumb Rubber on Modified Bitumen Properties

2017 ◽  
Author(s):  
Ovidijus Šernas ◽  
Donatas Čygas ◽  
Audrius Vaitkus ◽  
Vytautė Gumauskaitė
Keyword(s):  
High Temperature ◽  
Permanent Deformation ◽  
Fatigue Cracking ◽  
Crumb Rubber ◽  
Asphalt Binders ◽  
Modified Bitumen ◽  
High Temperature Properties ◽  
Modified Asphalt ◽  
Study Results ◽  
Polymer Modified Bitumen

Rubber derived from grinding of recycled cars and trucks tyres may be successfully used as a bitumen modifier. Number of researches reported sufficient characteristics of rubber modified asphalt binders or modified asphalt mixes in terms of improved permanent deformation and fatigue cracking. The behavior of crumb rubber asphalt binders depends on several factors, such as modification method, rubber content and size, modification temperature, mixing speed and time applied during the digestion process. The aim of this study is to evaluate the effect of crumb rubber amount and type on modified bitumen low and high temperature properties. This paper presents results of unmodified bitumen, crumb rubber crumb rubber and polymer modified bitumen. Low and high temperature properties have been evaluated using bending beam rheometer and dynamic shear rheometer. Moreover, softening point and viscosity tests have been performed. The study results revealed that crumb rubber modified bitumen performed better than pure bitumen and similarly to polymer modified bitumen.

Effect of Recycled EVA as Modifier on the Various Properties of Bituminous Binder for Road Application

2011 ◽  
Vol 214 ◽  
pp. 339-343 ◽  
Author(s):  
Naskar Moumita ◽  
Tapan Kumar Chaki ◽  
K. Reddy Sudhakar
Keyword(s):  
Reaction Mechanism ◽  
Thermogravimetric Analysis ◽  
Surface Energy ◽  
Rheological Properties ◽  
Permanent Deformation ◽  
Ethylene Vinyl Acetate ◽  
Modified Bitumen ◽  
Thermogravimetric Studies ◽  
Bituminous Binders ◽  
Pavement Construction

Recycled ethylene vinyl acetate (REVA) modified bituminous binders can be used in pavement construction for improved durability and enhanced performance in resisting permanent deformation of bituminous layers. This paper reports the thermogravimetric studies conducted on REVA modified bitumen (REMB) binders. The activation energies were determined from thermogravimetric analysis (TGA) data using Kissinger method, which does not require knowledge of the reaction mechanism. The effect of different percentages of REVA addition, as modifier in neat bitumen on the rheological properties, surface energy and microstructure of the bitumen/ REVA blends has been investigated in this study, which ensured the successful modification of bitumen with REVA.

scholarly journals Multi-Criteria Selection of Additives in Porous Asphalt Mixtures Using Mechanical, Hydraulic, Economic, and Environmental Indicators

2021 ◽  
Vol 13 (4) ◽  
pp. 2146
Author(s):  
Anik Gupta ◽  
Carlos J. Slebi-Acevedo ◽  
Esther Lizasoain-Arteaga ◽  
Jorge Rodriguez-Hernandez ◽  
Daniel Castro-Fresno
Keyword(s):  
Cellulose Fiber ◽  
Environmental Indicators ◽  
Asphalt Mixtures ◽  
Environmental Benefits ◽  
Modified Bitumen ◽  
Porous Asphalt ◽  
Different Types ◽  
Product Assessment ◽  
Polymer Modified Bitumen ◽  
Selection Of

Porous asphalt (PA) mixtures are more environmentally friendly but have lower durability than dense-graded mixtures. Additives can be incorporated into PA mixtures to enhance their mechanical strength; however, they may compromise the hydraulic characteristics, increase the total cost of pavement, and negatively affect the environment. In this paper, PA mixtures were produced with 5 different types of additives including 4 fibers and 1 filler. Their performances were compared with the reference mixtures containing virgin bitumen and polymer-modified bitumen. The performance of all mixes was assessed using: mechanical, hydraulic, economic, and environmental indicators. Then, the Delphi method was applied to compute the relative weights for the parameters in multi-criteria decision-making methods. Evaluation based on distance from average solution (EDAS), technique for order of the preference by similarity to ideal solution (TOPSIS), and weighted aggregated sum product assessment (WASPAS) were employed to rank the additives. According to the results obtained, aramid pulp displayed comparable and, for some parameters such as abrasion resistance, even better performance than polymer-modified bitumen, whereas cellulose fiber demonstrated the best performance regarding sustainability, due to economic and environmental benefits.

scholarly journals Performance Evaluation of WMA Containing Re-Refined Acidic Sludge and Amorphous Poly Alpha Olefin (APAO)

2021 ◽  
Vol 13 (6) ◽  
pp. 3315
Author(s):  
Mansour Fakhri ◽  
Danial Arzjani ◽  
Pooyan Ayar ◽  
Maede Mottaghi ◽  
Nima Arzjani
Keyword(s):  
Resilient Modulus ◽  
Permanent Deformation ◽  
Road Construction ◽  
Moisture Damage ◽  
Asphalt Mixtures ◽  
Modified Bitumen ◽  
Alternative Source ◽  
The Road ◽  
Marshall Test ◽  
Alpha Olefin

The use of waste materials has been increasingly conceived as a sustainable alternative to conventional materials in the road construction industry, as concerns have arisen from the uncontrolled exploitation of natural resources in recent years. Re-refined acidic sludge (RAS) obtained from a waste material—acidic sludge—is an alternative source for bitumen. This study’s primary purpose is to evaluate the resistance of warm mix asphalt (WMA) mixtures containing RAS and a polymeric additive against moisture damage and rutting. The modified bitumen studied in this research is a mixture of virgin bitumen 60/70, RAS (10, 20, and 30%), and amorphous poly alpha olefin (APAO) polymer. To this end, Marshall test, moisture susceptibility tests (i.e., tensile strength ratio (TSR), residual Marshall, and Texas boiling water), resilient modulus, and rutting assessment tests (i.e., dynamic creep, Marshall quotient, and Kim) were carried out. The results showed superior values for modified mixtures compared to the control mix considering the Marshall test. Moreover, the probability of a reduction in mixes’ moisture damage was proved by moisture sensitivity tests. The results showed that modified mixtures could improve asphalt mixtures’ permanent deformation resistance and its resilience modulus. Asphalt mixtures containing 20% RAS (substitute for bitumen) showed a better performance in all the experiments among the samples tested.

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