Real-time monitoring during soil compaction can be made possible by utilizing the vibration signature of a vibratory roller compactor. The compactor and soil constitute a coupled dynamic system, albeit complex and nonlinear. As the soil density increases and its mechanical properties change, the dynamic response of the compactor will change. Developing a thorough knowledge of the relationship b...

The aim of this project is to develop methods for scaling up roller compaction process from lab scale to pilot scale, to determine the effect of processing parameters of roller compactors at both lab scale (instrumented roller compactor at University of Birmingham, micro-pactor at Pfizer) and pilot scale (mini-pactor from Gerteis) on the attributes of dry-granulated formulations, including the ...

Methods of preparing test specimens in laboratories are particularly important. It also holds true in terms of compaction procedure in predicting pavement performance. The currently available laboratory compactor cannot adequately replicate field compaction conditions, especially the Stone Mastic Asphalt (SMA) mixture. The essential element of SMA mixture comprises of stones that are placed nex...

One of the main objectives of the top asphalt layer is to provide a protective surface against water penetration and other harmful liquids such as chemicals. However, current construction equipments do not provide finished asphalt surfaces that meet this quality and therefore, allowing the intrusion of several liquids through the asphalt layers and deeper into the underlying soils. Subsequently...

Language: English The Challenge At the outset the asphalt paving process seems to be simple. Trucks deliver hot mix asphalt from plants to the construction site. There the asphalt is loaded on asphalt pavers that evenly spread the asphalt. Finally, compactors compact the asphalt to its required density. Despite this relatively structured process our research shows that there are significant dis...

The objective of this research was to develop a new method for predicting the number roller passes and degree compaction asphalt layer from perspective energy. relationship between energy density quantified using gyratory compactor. Prediction models utilization coefficient product rolling resistance were established based on test section. prediction procedure proposed. Test results showed pred...

The article presents a description of fundamentally new design soil-cultivating wave roller and the results its research. Adequate mathematical models soil rolling process are presented from standpoint compliance with reference values density aggregate composition. Thanks to research, it was found that quality by developed is 20.9% better than KKZ-6 commercially produced industry. To obtain mos...

Fine cohesive powders are often dry granulated to improve their flowability. Roller compaction is commonly used to produce dense ribbons which are then milled. The material properties of the powder and the conditions in the roller compactor affect the strength of the ribbons, however there is no method in the literature to predict the size distribution of the product of ribbon milling. Here we ...

Volcanic soil is often used as fill material in road embankment construction Java island-Indonesia. An understanding of the engineering properties compacted volcanic soils needed, especially during preliminary design phase and detailed embankment. Carrying out a field compaction trial test will significantly assist process construction. Selecting correct number passes from compactor can be obta...