Particle breakage during compaction affects behavior and the quality of formed compact. This work conducted a numerical study based on discrete element method (DEM) to investigate effect particle dynamics compact properties, including size density distributions, pore properties. A force-based criterion Apollonian sphere packing algorithm were employed characterize behavior. The structures compa...

Keller, T. 2004. Soil Compaction and Soil Tillage Studies in Agricultural Soil Mechanics Doctoral dissertation. ISSN 1401-6249, ISBN 91-576-6769-1 This thesis deals with various aspects of soil compaction due to agricultural field traffic, the draught force requirement of tillage implements and soil structures produced by tillage. Several field experiments were carried out to study the mechanic...

Compaction is a mechanical process in which an earthen material is made more dense. The densification occurs as a direct result of the mechanical loading, and is essentially complete at the end of the loading. Volume changes are incurred as a result of a reduction in the quantity of air voids— water content remaining constant. Since it is impractical to squeeze out all the air, the as-compacted...

the aim of this study was to introduce modified continuous wave compaction (mcwc) technique and compare its obturation quality with that of lateral compaction (lc), warm vertical compaction (wvc) and continuous wave compaction techniques (cwc). the obturation time was also compared among the four techniques.sixty-four single-rooted teeth with 0-5° root canal curve and 64 artificially created ro...

In 1952–1954 Higuchi and his group have instrumented upper and lower compression, ejection, and punch displacement on an eccentric tablet press, and pioneered the modern study of compaction process. This work was followed by Nelson who was the member of the original group. In 1966, a U.S. patent was granted to Knoechel and coworkers for force measurement on a tablet press. This patent was follo...

Heavy vibratory plate compaction is an efficient technique for improvement of granular soils. However, its practical application limited by insufficient knowledge about the process and optimum procedure execution. In this study, tests were conducted in field with a 40.5-ton heavy compactor. The site consisted partially saturated, overconsolidated medium-dense silty sand sandy silt. Such conditi...