Evaluation of Semicircular Bend Geometric Properties for Asphalt Concrete Testing

The need for modernization and adjustment of existing road infrastructure to European Union requirements will result in the need for processing thousands tones of waste. The amount of waste received from road repairs and road demolitions, as well as technological by-products in Poland may be estimated at the level over 2.5 million tones, which is almost 2% of all waste production. Construction waste recycling is truly justified in this case, together with waste management according to the provisions of national and international law. One of such products is dust generated as a side effect of stone processing in a Casey mine in Ireland. Laboratory tests of the new material compositions with the use of waste from this mine not only realize the general aims of economic and ecological assumptions, but also allow increasing quality of a new product which is an asphalt-concrete composite. In order to check the properties of the use of a filler in a form of Hornfels Ireland powder there was conducted a series of special tests on the asphalt concrete testing the wearing course. Hornfels Ireland powder produced as a waste material of an aggregate processing in Cassey Quarry is a useful material, which may be successfully used as a component in a process of WMA production.

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Concrete Testing: Characterisation of oxidative ageing in asphalt concrete – Part 2: Estimation of complex moduli

Insight - Non-Destructive Testing and Condition Monitoring ◽

10.1784/insi.2012.55.11.605 ◽

2013 ◽

Vol 55 (11) ◽

pp. 605-609 ◽

Cited By ~ 4

Author(s):

M E McGovern ◽

B Behnia ◽

W G Buttlar ◽

H Reis

Keyword(s):

Asphalt Concrete ◽

Complex Moduli ◽

Concrete Part ◽

Concrete Testing ◽

Oxidative Ageing

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Mitigation of moisture damage in asphalt concrete: Testing techniques and additives/modifiers effectiveness

Construction and Building Materials ◽

10.1016/j.conbuildmat.2015.03.001 ◽

2015 ◽

Vol 84 ◽

pp. 437-443 ◽

Cited By ~ 20

Author(s):

Ibrahim M.A. Abuawad ◽

Imad L. Al-Qadi ◽

James S. Trepanier

Keyword(s):

Asphalt Concrete ◽

Moisture Damage ◽

Testing Techniques ◽

Concrete Testing

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Asphalt concrete testing device: Studying and designing based on the properties of asphalt concrete

Journal of Science and Technology in Civil Engineering (STCE) - NUCE ◽

10.31814/stce.nuce2019-13(1)-06 ◽

2019 ◽

Vol 13 (1) ◽

pp. 60-65

Author(s):

Le Hong Chuong ◽

Ung Quoc Trang ◽

Ngo Lam

Keyword(s):

Shear Stress ◽

Asphalt Concrete ◽

Friction Angle ◽

Mechanical Action ◽

Testing Device ◽

Shear Fatigue ◽

Moving Vehicles ◽

Concrete Testing ◽

Coulomb Failure Criterion ◽

Normal Strength

With the purpose of obtaining the shear strength parameters (friction angle, φ, and cohesion, c) of asphalt concretes. At the present time, almost the testing devices were designed based on the condition of the vehicle's load when they are moving on the pavement structure. That means, the fatigue resistance of the interfaces was determined through the loads acting at the interfaces between layers are repetitive mechanical action of the moving vehicles. With that view, the ratio of the normal and shear fatigue loads of asphalt concrete was not considered in terms of the nature of the material. An asphalt concrete testing device is proposed based on the modification from AST-2 instrument and Shear Fatigue Test instrument. The main parameters of this device are calculated from the ratio of shear stress and normal stress at the fatigue of the asphalt concrete according to the Mohr-Coulomb failure criterion. Test results with asphalt specimens show that the device is stable, the acting vertical loads were smaller and more stable. Keywords: normal strength; shear stress; asphalt concrete; fatigue stresses. Received 4 December 2018, Revised 20 December 2018, Accepted 24 January 2019

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