EVALUATION OF DYNAMIC MODULUS OF ASPHALT CONCRETE FIELD CORES
Published In: 6TH INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING
Author(s): MD OHIDUZZAMAN
Abstract: The dynamic modulus is a required parameter in the design and analysis of asphalt pavements. The dynamic modulus of asphalt mixtures increases with aging as the mixture becomes stiffer. This paper presents an experimental evaluation of dynamic modulus of asphalt concrete field cores in the State of Qatar where asphalt mixture is subjected to harsh weather condition of elevated temperature. A total number of six different pavement sections were selected to study the aging effect and mix design on the mechanical performance of asphalt pavements in Qatar. These six different sections were constructed by using different types of aggregates and different bitumen types. Field cores were extracted from these sites. The extracted field cores were sliced into base and wearing layers and dynamic modulus tests were performed on these specimens. The test results demonstrated that the effect of aging was more prominent in the wearing course of pavements as it is subjected to elevated temperatures c
- Publication Date: 10-Dec-2017
- DOI: 10.15224/978-1-63248-139-9-25
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ANISOTROPY OF 3D PRINTED MATERIALS IN TENSION TESTING PROTOCOL AND CHAIN OF ACTIVITIES
Published In: 6TH INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING
Author(s): IZABELA HAGER , KATARZYNA CZWAKIEL , MARCIN TEKIELI
Abstract: The first attempts to use additive manufacturing civil engineering are successful. Additive printing can be used to print precast elements, building envelope elements or to print whole structure using contour crafting. The main goal of this research is to be a sort of bootstrap step, allowing us to have a grip on the whole chain of activities, protocols, and tools: creation of computer models of printed parts, 3D printing, mechanical properties testing, raw results storage and processing. The aim of the work was to determine the anisotropy of material behavior in tension for 3D printed materials and preparation the testing protocol for digitally manufactured cementitious building products. Samples for tensile strength determination were printed in FDM technology with three space fill (printing densities) and three different layer orientations.
- Publication Date: 10-Dec-2017
- DOI: 10.15224/978-1-63248-139-9-23
- Views: 0
- Downloads: 0