Soil expansiveness is a major problem that need due attention in geotechnical investigations. It can detrimentally influence performance and life time of lightweight engineering infrastructures. For this study, soil samples were collected from eastern part of Addis Ababa city. Specific expansive soil engineering parameters; Consistency limits (liquid limits (LL), plastic limits (PL) and plastic...

fly ash is one of the most plentiful and versatile of the industrial by-products. at present, nearly 150 million tonnes of fly ash is being generated annually in india posing dual problem of environmental pollution and difficulty in disposal. this calls for establishing strategies to use the same effectively and efficiently. however, it is only in geotechnical engineering applications such as t...

The mineral calcium sulphate transforms from anhydrite through bassanite to gypsum and then can convert back to bassanite and anhydrite. This transformation of calcium sulphate causes volume change that adds to the potential hazards with indigenous soils containing expansive clay minerals. Heave and settlement are the most important geotechnical problems associated with many argillaceous soils ...

Risk analysis of swell and shrinkage is essential to properly evaluate engineering stability and safety of expansive soils. Herein a novel model for risk analysis of swell and shrinkage of expansive soils was proposed by means of coupling set pair analysis with stochastic simulation of triangular fuzzy numbers. A concept ofmulti-element connection number for a set pair, which consisted of measu...

Compost use in landscaping and erosion control applications has become widespread. Various types of composts have been utilized on highway embankments for soil conservation and runoff reduction. Different compost materials could have different erosion control effects. The objective of this study is to investigate the erosion resistance of three commonly used composts and their effects on slope ...

Th e complexity of water budgeting module as shown in this paper is represented in phases. By experimental measurement of precipitation and lysimetric measurement of percolation runoff the fi rst phase establishes monthly and annual soil-water budgets of skeletal and clayey soils, and hence the infl uence of soil water-retention potential on hydrologic cycle and water budget over a four year pe...

Two soils spiked with lead at different rates were stabilised/solidified using Portland cement and fly ash at different soil:binder ratios and tested for their setting time, unconfined compressive strength (UCS), leachability and durability. Results show that soil texture, percentage of binders and lead concentration play an important part in the treatment, significantly influencing the perform...