Biomass ashes (BA) have been intensively studied as amendments for soil in earthworks. This paper aimed to geotechnically characterize BA from pines and olive trees compared the Castelo Branco, Portugal. Namely, granulometry, specific gravity, Atterberg limits optimal compaction values were obtained analyzed order valorize residue incorporated into soils. work is part of broader efforts develop...

The soil reinforcement technique is used to improve the engineering characteristics of soils. In this technique, various types elements have been in constructions for a very long time. As mentioned previous literature, use synthetic fibers and plastic waste materials has shown promising results. when these inclusion soils, significant enhancements are demonstrated overall mechanical properties ...

Research on tunnel excavation has rarely considered the effect of a complete building. Therefore, this paper building with double basement and piles, three-dimensional finite-element model for shield tunnels undercrossing an existing was established to study effects double-shield displacement internal forces soil, segments, buildings. Grouting reinforcement technology used in analyze grouting p...

expansive soils undergo volumetric changes in response to changes in their moisture content that this characteristic causes irreparable problems particularly in civil projects. investigators have proposed chemical methods as well as mechanical treatments to stabilize the expansive soils. in this study, stabilization of expansive soil with randomly distributed fiber was investigated by reinforci...

In the present study, physical model tests were conducted to investigate the effect of the geogrid reinforcement on the reduction of the differential settlement in widening of a highway embankment. A water bag filled with water and placed beneath an embankment was used to simulate the soft foundation of the widened portion of the embankment in the physical model test. Water from the water bag w...

Even though steel bar is a conventional reinforcement in soil stabilization systems, the problem of corrosion of steel may lead to vast damages especially in aggressive environments. In the past decades, Fiber Reinforced Polymer (FRP) materials have offered an effective solution to overcome the corrosion problem. Despite numerous bond stress-displacement models for reinforcements in concrete, t...

clay soils and their related abnormal behavior such as excessive shrinkage, swelling, consolidation settlement and cracking on drying has been the subject of many investigations. previous studies mainly evaluated the effects of additives such as lime, cement and sand on these characteristics. initial results indicated that the soil characteristics were improved. however, reportedly in many case...

in this paper an adaptive pid controller for wind energy conversion systems (wecs) has been developed. theadaptation technique applied to this controller is based on reinforcement learning (rl) theory. nonlinearcharacteristics of wind variations as plant input, wind turbine structure and generator operational behaviordemand for high quality adaptive controller to ensure both robust stability an...