Abstract: In this study, a well-known dynamic modulus prediction method, the Al-khateeb model, is evaluated to see how it performs to estimate dynamic modulus of asphalt mixtures designed and made based on Western Australian asphalt specifications and materials. The parameters needed for this model are obtained through laboratory tests on binder and mixture properties. Also, the actual dynamic modulus of asphalt samples is obtained through testing the samples which are made with the same mixtures and tested in Asphalt Mixture Performance Tester (AMPT) machine in a series of different loading frequencies and temperatures. Later the results of the model are compared with the actual results. The results showed that even though this model is very common in literature, it does not perform satisfactorily for mixtures in this study. Therefore, some modifications were made on the model to improve its accuracy.

• Publication Date: 16-Dec-2016
• DOI: 10.15224/978-1-63248-114-6-30
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Abstract: This paper studies a flow regulation device, whose operation does not fully comply with the theoretical simplifications underlying the usual design standards for this type of structure. In particular, a flow regulation device consisting of two side weirs with a discharge rate very close to the maximum flow coming from upstream is studied on a physical model. The device is located in the pipe of a steep-slope swiss-section sewer, just upstream of a flow measurement section comprising a rectangular-section venturi. The theoretical analysis and tests carried out on the experimental installation in both normal and critical conditions have identified solutions that, despite their specific characteristics, may provide indications of a more general nature.

• Publication Date: 16-Dec-2016
• DOI: 10.15224/978-1-63248-114-6-31
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