Teff [Eragrostis tef (Zucc.) Trotter] is a relatively new forage crop that is attracting much interest among hay growers in the United States and Utah (Creech, et al., 2012). Teff plants have fine stems, shallow roots and are not frost tolerant. This annual, warm-season grass grows best during the hottest months of the year when cool-season grasses suffer their “summer slump.” Since Teff does n...

ISSN 2277-5056 | © 2012 Bonfring Abstract--The workability of fresh concrete should be characterized by its rheological properties based on material science approach to overcome the inadequacies of traditional empirical tests like slump test. Generally the rheological properties of fresh concrete are described by Bingham parameters in terms of two physical quantities, namely yield stress and pl...

Abstract—In this study, the effects of waste marbles as aggregate material on workability and hardened concrete characteristics of self compacting lightweight concrete are investigated. For this purpose, self compacting light weight concrete are produced by waste marble aggregates are replaced with fine aggregate at 5%, 7.5%, and 10% ratios. Fresh concrete properties, slump flow, T50 time, V fu...

Gonzalo G Alvarez ([email protected]) Brian Gushulak ([email protected]) Khaled A Rumman ([email protected]) Ekkehardt Altpeter ([email protected]) Daniel Chemtob ([email protected]) Paul Douglas ([email protected]) Connie Erkens ([email protected]) Ingrid Hamilton ([email protected]) Peter Helbling ([email protected]) Jane Jones (Jan...

The tax structure in Niger depends heavily on uranium mining and the rest of the formal sector. The slump in uranium prices has reduced tax revenues to 9% of GNP, which is not enough to finance an adequate level of public services. In this paper, tax reforms are considered which will raise more revenue while respecting criteria of equity, efficiency, and growth. The reforms mostly involve exten...

The development of predicting models is necessary for an easier and more accurate design mix self-compacting concrete. Due to the difficulty test requirements this type concrete, a model useful can be used derive optimum mix. Different mixtures with varying cement, water, superplasticizer content were created using central composite design. A full quadratic was chosen all dependent variables co...

Abstract Permafrost-dependent landslides occur in a range of sizes and are among the most dynamic landforms Arctic warming climate. Retrogressive thaw slumps (RTSs) enlarging triggered by thawing release excess water from permafrost ground ice, causing smaller or larger collapses surface, which turn exposes new to rapid collapse. In this study, preliminary assessment previous slump activity Nor...