Semantic Scholar extracted view of "Handling of Aggregates in The Ethiopian Construction Industry: The Case of Addis Ababa" by Admasu Tekle. Skip to search form Skip to main ... 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 ...
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For natural aggregate production tremendous time and money is spent in locating potential aggregate resources and in determining their quantity and quality (Langer et al. 2004; Langer and Tucker ...
Environmental Impact and Sustainability of Aggregate Production in Ethiopia. ... Sandy Materials in Civil Engineering - Usage and… 2020; 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 ...
Ethiopia is the second most populated country (109.2 million) in Africa, with the gross domestic product (GDP) of 84.4 billion USD, 7.6% GDP growth, 9.6% inflation,
aggregates are diatomite, pumice, scoria, volcanic ... Pumice and scoria are more widely used for hollow and solid concrete block production in Ethiopia (Abebe Dinku, 2005). The use of scoria (red ...
This study aims to explore the production of Recycled aggregate and the feasibility of it using in Ethiopia. The following are the specific objectives of the study. 1. To study the production process of Recycled aggregate; 2. To assess the significance and feasibility for the use of Recycled Concrete Aggregate in Ethiopia specifically in Addis ...
Moreover, the production of fine aggregates in the rift valley area of Ethiopia is still in the primitive stage. It does not coincide with the standards with respect to production process, quality, and production capacity. The environmental impacts that fine aggregate production bring about are hardly known in this country.
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 ...
It is important to maintain the aggregate 19 in a moist saturated surface dry (SSD) condition to assure the PCC mix water as designed is maintained so as to produce uniform plastic properties at constant water to cementations ratio. 2.2.1.7 Workability Workability of a properly designed RCA mix is no different than a conventional concrete mix ...
The production of aggregates in the world is estimated at about 16.5 billion tons per annum that worth 70 billion U.S Dollars. This makes aggregate production one of the most important mining industries in the world. Aggregate is a high bulk but relatively low cost construction materials.
The Ethiopian pre-coated aggregates market shrank slightly to $567 in 2023, almost unchanged from the previous year. In general, the total consumption indicated slight growth from 2012 to 2023: its value increased at an average annual rate of +1.3% over the last eleven-year period. The trend pattern, however, indicated some noticeable fluctuations being recorded …
The nascent cobblestone construction industry in Ethiopia is proving to be a major boost in the country's efforts to create additional employment opportunities and produce alternative road construction material. It has also raised concerns over the lack of a regulatory framework to govern the management of quarries across the country.
This makes aggregate production one of the most important mining industries in the world. Aggregate is a high bulk but relatively low cost construction materials. Its market value is …
Semantic Scholar extracted view of "Fine Aggregate Production and Its Environmental Impact in Some Selected Sites of The Rift Valley Area in Ethiopia" by Y. Yusuf
aggregate production are anticipated in most of African countries (for example, Ethiopia, Kenya, Somalia). Murdiyarso (2000) highlights that rice production in Asia may decline by 3.8% of
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.
Its production involves the use of ingredients like cement, aggregates, water, and admixtures [2]. Among these ingredients, the binder and the costliest, environmentally unfriendly element is ...
Alternative Aggregate: The case of Adama Town Ethiopia. Lemma Beressa1, Battula Vijaya Saradhi2 ... The study proposed the combined use of scoria and pumice aggregate for the production of an improved HCB. Before the use of the two aggregates for blending, tests were conducted on the physical properties of ...
The sources and modes of production of coarse and fine aggregates in the Ethiopian construction industry are assessed. ... Site development and permitting for aggregate production is difficult ...
The increase in the demand for concrete production for the development of infrastructures in developing countries like Ethiopia leads to the depletion of aggregates and high cement demand, which imposes …
aggregate production in Ethiopia is generally basalt while ignimbrite is most commonly used for masonry stone. On the other hand the majority of sand is collected from riverbeds. It is an established fact that the compressive strength of concrete is influenced by, among other things, the quality and proportion of fine and coarse aggregate, the ...
With this in mind, this research has been undertaken to assess the production process of fine aggregates in some sites of the Oromia region in Ethiopia and the environmental impacts …
important ingredients in concrete production. The quality of concrete produced is much influenced by the properties of aggregate. The dominant rock for coarse aggregate production in Ethiopia …
The recycling of concrete structures as concrete aggregate in Ethiopia was investigated, and promising results were found [4]. The physical properties of recycled concrete aggregate are within the range of normal weight aggregate. ... Conclusions In this research, the properties of the recycled fine aggregate from a production site of HCB were ...
Concrete is one of the versatile and widely used buiding material in the world construction industry. Fine and coarse aggregates make about 70% by volume of concrete production. It goes without saying that the quality of concrete is thus strongly influencd by aggregate's physical and mechanical properties as well as chemical composition of the parent aggregate making …
Moreover, the production of fine aggregates in the rift valley area of Ethiopia is still in the primitive stage. It does not coincide with the standards with respect to production process, quality, and production capacity. The environmental impacts that fine aggregate production bring about are hardly known in this country.
In Ethiopia, agricultural production and productivity are very low, and hence increase in production ... aggregate volume of outputs given the aggregate volume of inputs used (Balk et al., 2019). Increasing agricultural productivity is one way to meet this growing demand. Improvements in …