QUALITY  ASSESSMENT  OF  C-25  CONCRETE  PROPERTY  USING  RIVER  SAND  BY-PRODUCT  AS  A  REPLACEMENT  OF  CRUSHED  COARSE  AGGREGATE IN THE CASE OF NORTHERN GONDAR.

Getachew, Soressa

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dc.contributor.author	Getachew, Soressa
dc.date.accessioned	2022-12-25T07:10:14Z
dc.date.available	2022-12-25T07:10:14Z
dc.date.issued	2022-07
dc.identifier.uri	http://ir.bdu.edu.et/handle/123456789/14732
dc.description.abstract	Concrete is frequently utilized for both structural and nonstructural constructions, such as buildings, bridges, water tanks, pavements, pipes, tiles, and other similar undertakings since one of its ingredients, crushed coarse aggregate makes about 35–45 percent of the total volume of concrete and has a major negative impact finding a substitute for this material is crucial. However, in Northern Gondar, when sand is used for concrete work, its sieved, and the by-product is dumped all over the city, causing health and safety issues, becoming a traffic hazard, damaging asphalt and walkways, producing economic problems, and generally causing a mess to the city due to luck of dumping area and high cost of caraway. In consideration of this, the study discusses the production of concrete quality of C-25 concrete properties using rivers sand byproducts as a replacement for crushed coarse aggregate in the case of northern Gondar. This paper examines the effects of concrete's workability, compressive strength, tensile strength, and durability/sorptivity. Furthermore, the percentage proportion of these materials, material characteristics, material effect, pollution effect, energy consumption, Cost comparison, and overall economic viability are researched for a replacement for crushed coarse aggregate. Materials physical tests and concrete mix design are carried out according to ACI, ASTM, and AASHTO standards. With the quartile proportions, the concrete mix design is generated for C-25 compressive strength using Magech river sand by-product replacement at 0%, 25%, 50%, 75%, and 100% of the crushed aggregate. Concrete compressive strength is measured on the 7th and 28th days, as well as tensile strength on the 28th day. Within the stipulated 25 percent replacement, the material fulfills the physical requirements, and the concrete cube satisfies the requirements for compressive strength, tensile strength, and sorptivity. Additionally, replacing CCA with RSB has the potential to reduce carbon dioxide emissions, minimize concrete production raw material costs, reduce city pollution and give North Gondar a sizable advantage. Keywords: - Workability, compressive strength, Pea gravel, Sorptivity, Splitting test.	en_US
dc.language.iso	en_US	en_US
dc.subject	CIVIL AND WATER RESOURCE ENGINEERING	en_US
dc.title	QUALITY ASSESSMENT OF C-25 CONCRETE PROPERTY USING RIVER SAND BY-PRODUCT AS A REPLACEMENT OF CRUSHED COARSE AGGREGATE IN THE CASE OF NORTHERN GONDAR.	en_US
dc.type	Thesis	en_US