Environmental Impact and Sustainability of Aggregate …
2. Sourcing and aggregate production for Ethiopian construction industry 2.1 Sources of aggregate in Ethiopian past, present, and future trends The natural aggregates are formed as a result of the processes of weathering and abrasion or through crushing a large parent mass [7]. Engineers are first of all concerned with technical requirements.
Full article: Economic valuation and its determinates of …
Economic valuation and its determinates of improved irrigation water use; evidence based on South Gondar Zone, Ethiopia
Production of fine aggregate in Ethiopia [6].
In Ethiopia for instance, quarrying for aggregate production has been on the increase for the last three decades due to the high rate of urbanization in the country [8].
Comparative Investigation of the Effect of Recycled Fine …
The recycling of concrete structures as concrete aggregate in Ethiopia was investigated, and promising results were found [ 4 ]. The physical properties of recycled …
(PDF) THE NEED FOR STANDARDIZATION OF AGGREGATES …
The parent materials of aggregates are derived mainly from volcanic activity. The dominant rock for c oarse aggregate production in Ethiopia is generally basalt …
Organic Carbon and Nitrogen Associated with Soil Aggregates …
Thus, aggregate and particle associated SOC and TN in 0- to 10-cm and 10- to 20-cm layers were estimated for five land uses: rainfed cultivation (RF), agroforestry (AF), open pasture (OP), silvopasture (SP), and irrigation (IR) each with five replications within a watershed in Ethiopia.
COMPARATIVE STUDY ON THE COMPRESSIVE …
aggregates are diatomite, pumice, scoria, volcanic cinder, and tuff. Except for diatomite, all are volcanic ... hollow and solid concrete block production in Ethiopia (Abebe Dinku, 2005). The use ...
Suitability of Scoria as Fine Aggregate and Its Effect on …
Jimma-Ethiopia, Box 378, Ethiopia 2 Civil, Environmental, ... Hence, the use of this material as fine aggregate in concrete production helps to save energy and cost [27,28].
Environmental Impact and Sustainability of Aggregate …
Sourcing and aggregate production for Ethiopian construction industry 2.1 Sources of aggregate in Ethiopian past, present, and future trends The natural aggregates are …
Aggregate Demand and Aggregate Supply
Aggregate supply refers to the quantity of goods and services that firms are willing and able to supply. The relationship between this quantity and the price level is different in the long and short run. So we will develop both a short-run and long-run aggregate supply curve. Long-run aggregate supply curve: A curve that shows the relationship in
Ethiopia's Construction:Potential of Aggregate Crusher …
To meet the growing demand for aggregate, businesses in Ethiopia's construction industry need to develop comprehensive plans that address the entire value chain of aggregate production. This includes establishing efficient and sustainable quarrying operations, investing in modern crushing equipment, and ensuring consistent and reliable supply ...
Environmental Impact and Sustainability of …
Abstract. The production of aggregate for the infrastructural development of the country has been increasing for the last three decades due to the high urbanization rates in the main cities of the country and …
Changes in land use alter soil quality and aggregate stability …
It is found that compared to cropland, application of area exclosure and afforestation on degraded lands restores soil quality and aggregate stability, and that SOC, TSN and SAS significantly correlate with many other soil quality indicators. Land use change alters biodiversity and soil quality and thus affects ecosystem functions. This …
(PDF) POTENTIAL USE OF CINDER GRAVEL AS AN …
Results of moisture density relation test for different proportions of cinder gravel and Crushed Stone Aggregate (CSA) California Bearing Ratio (CBR) test.
FINE AGGREGATE PRODUCTION AND ITS …
Chapter Four gives the results and discussions on fine aggregate production in some selected sites of the rift valley area in Ethiopia and the environmental aspects, impacts …
(PDF) Recycling Fine Aggregate from Demolished Hollow …
PDF | On Sep 4, 2019, Lucy Feleke Nigussie published Recycling Fine Aggregate from Demolished Hollow Concrete Block for Green Concrete in Ethiopia | Find, read and cite all the research you need ...
Geo-engineering evaluation of Termaber basalt rock mass …
The use of basalts as aggregate material and building stones is increasing from year to year in Ethiopia (USGS, 2010). The Oligocene–Miocene volcanics of Ethiopia highland of Ethiopia is mainly basic in composition and covers a wide area; however, the present study focuses only on the Miocene to late Miocene Termaber formation …
Environmental Impact and Sustainability of Aggregate …
Chapter Environmental Impact and Sustainability of Aggregate Production in Ethiopia. Chapter. Aggregate Production in EthiopiaGashaw Assefa and Aklilu …
Full article: Quantifying food insecurity in Ethiopia: …
Food insecurity remains persistent challenges in Ethiopia. This study analyzed secondary data to examine the prevalence and drivers of these issues. Food insecurity was assessed using 2014-2019 Gal...
Soil aggregation, aggregate-associated organic carbon, and …
This study investigates soil aggregate distribution, soil organic carbon (SOC), and total nitrogen (TN) concentrations in total soil and within aggregates under different land uses in Regosols of Ghannouch, southern arid region of Tunisia. From three sites, i.e., native soils (NS), olive-growing soil (OG), and seasonal-crop soil (SC) land …
Ethiopia
To use the data from the ERSS 2011-12, the Ethiopia Central Statistical Agency (CSA) asks that you fill in a Data User Agreement. This agreement allows the CSA to know who is using their data and the types of studies being done by users.
Investigation on the Suitability of Pumice and Scoria …
Addis Ababa University, Addis Ababa, Ethiopia . Abstract This paper presents the use of Ethiopian pumice and scoria aggregates for lightweight concrete in ribbed slab ... However, the use of crushed aggregate in web and topping construction of ribbed-slab incurred a significant cost increase as it requires: crushing equipments, …
(PDF) EFFECTS OF DIFFERENT LAND USE TYPES ON SOIL
This study was, therefore, conducted to assess the impact of land use/land cover on the physicochemical properties of soils of wudma area, southern Ethiopia. The land use systems studied included ...
Changes in land use alter soil quality and aggregate stability in …
Scientific Reports - Changes in land use alter soil quality and aggregate stability in the highlands of northern Ethiopia. Skip to main content.
Environmental Impacts of Coarse Aggregate Production in …
Environmental Impacts of Coarse Aggregate Production in and Around Addis Ababa. Population is increasing in this world and it is also true phenomenon in our country. The …
EVALUATION OF SUITABILITY OF COARSE …
COARSE AGGREGATES FOR CONCRETE IN MEKELLE AREA, ETHIOPIA Marta Yirga, Dr.Kifle Weldearegay, Tadesse Abebe Abstract: Aggregates constitute the bulk of the total volume of concrete and hence influence the strength of concrete to great extent.It is essential that aggregates used in construction purposes are strong and durable.
Ethiopia s High Growth and Its Challenges Causes and …
Now we look at the dynamics of aggregate demand in Ethiopia (graph 5 and 6). Growth was clearly consumption driven, more precisely by consumption. Yet, gross invest-ment was the most dynamic component of aggregate demand. Public investment, mainly for infrastructure of various kinds, had a share of around 10% of GDP, ranging …
Utilization of Basaltic Quarry Dust as a Partial
Walling material of different types, the most common in Ethiopia; especially in an urban areas, is hollow concrete blocks (HCB). Hollow concrete blocks, which are made out of a mixture of cement, sand, and stone aggregates, are the major construction materials used in the construction of residential buildings, factories, and multi-storied ...
Environmental Impact and Sustainability of Aggregate Production in Ethiopia
In Ethiopia for instance, quarrying for aggregate production has been on the increase for the last three decades due to the high rate of urbanization in the country [8]. As a result, the ...
Changes in land use alter soil quality and aggregate stability …
AMF spore density and percent wet soil aggregate stability (mean ± SE) in the soils of five different land use types in the highlands of northern Ethiopia.