Results 111 to 120 of about 22,610 (232)

Bitumen deposits of northwest Alabama

open access: yes, 1987
journal articleBituminous rocks of Mississippian age crop out in northwest Alabama within a 113-km (70-mi) long belt. Bitumen deposits have been confirmed by coreholes to be present in the subsurface for a distance of at least 16-24 km (10-15 mi) south ...
Wilson, G. V.
core  

Cooee bitumen: Dynamics and structure of bitumen- water mixtures

open access: yes, 2016
Systems of Cooee bitumen and water up to 4 mass % are studied by molecular dynamics simula- tions. The cohesive energy density of the system is shown to decrease with an increasing water content. This decrease is due mainly to an increase in potential energy which is not high enough to counterbalance the increase in volume due to the addition of water.
Lemarchand, Claire A.   +2 more
openaire   +2 more sources

Bitumen-Biopolymer Materials Modified with Polylactic Acid with Improved Physical and Chemical Properties

open access: yesAdvances in Polymer Technology
With the continuous expansion of the global automobile fleet, there is an escalating demand to enhance and maintain current road infrastructure. Given the information provided, there will be a growing demand for bitumen, a key raw material used in the ...
Assel Jexembayeva   +3 more
doaj   +1 more source

Influence of preparation parameters on rheological properties and relation analysis of waste rubber modified bitumen mastic

open access: yesFrontiers in Materials
Waste rubber modified bitumen has gained significant attention as a sustainable and innovative material in the field of pavement engineering. This study aims to evaluate the performance of rubber modified bitumen mastic by considering its rheological ...
Honggang Zhang   +8 more
doaj   +1 more source

Process for separating high viscosity bitumen from tar sands

open access: yes, 1984
patentA novel process for separating high viscosity bitumen from tar sand. The process includes grinding the tar sand to obtain phase disengagement of the bitumen phase from the sand phase and thereafter using flotation techniques to obtain phase ...
Miller, Jan D.; Misra, Manoranjan
core  

Correlation of Water Absorption Values of Bitumen Waterproofing Sheets Obtained According to CSN EN 14223 and CSN 503602

open access: yes, 2014
The article deals with the issue of weight water absorption of bitumen waterproofing sheets. It compares two methodologies applicable to examination of water absorption of bitumen waterproofing sheets from the point of view of testing procedures.
Zdenek Caha   +3 more
core   +1 more source

Heavy-oil and bitumen projects in Madagascar

open access: yes, 1987
journal articleMadagascar contains two important deposits, the Bemolanga tar sand and the Tsimiroro heavy crude oil. Although known for years, they have received intensive investigation recently in effort to achieve a measure of energy independence in ...
Andrianasolo-Ralaimiza, H.
core  

Development of a Mix Design Process for Cold-in-Place Rehabilitation Using Foamed Asphalt, December 2005 [PDF]

open access: yes, 2005
Report by Iowa Department of Transportation about pavements ...

core  

Optimisation of the preparation procedure of crumb rubber modified bitumen with wax-based additives

open access: yes
Wax-based additives can be added to crumb rubber modified bitumen (CRMB) at different stages to enhance the workability. This study aims to optimize the preparation procedure by investigating the effects of the preparation procedure on the rheological ...
Lu, Guoyang   +3 more
core   +2 more sources

Influence of surface layer bitumen on the performance evolution of base layer over service time

open access: yesCase Studies in Construction Materials
In conjunction with the aggregates, bitumen is commonly applied for surface and base layers of asphalt pavements. A large number of studies concentrated more on the surface layer performance influenced by different types of bitumen and service time ...
Xuemei Zhang   +6 more
doaj   +1 more source

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