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IJSTR >> Volume 8 - Issue 1, January 2019 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Effect Of Mixing Ratios On The Structural Properties Of Awgbu Twin Clay

[Full Text]

 

AUTHOR(S)

Amah Alexander Nwabueze, Ahemen Iorkyaa, Echem Obinna Chidiebere

 

KEYWORDS

 

ABSTRACT

Awgbu town is in Orumba North local Government Area of Anambra State, South East of Nigeria, located at Latitude 6o 07ꞌ N and Longitude 7o 06ꞌE. The town has two types of clay deposits at Ngene-Agu site called Asha and Ajagworo. The Business of pottery making by Awgbu Women is as old as Awgbu and flourished well till late 1980s when lighter plastic containers took over. Their method of preparation of clays and firing of their pots production is the same with Makurdi preparation and firing of bricks except that Ajagworo is used as an additive to Asha in the ratio of 1:3. This work provides an extension of an established ratio (1:3) at 11000C to further determine the best ratio that will give the highest compressive strength and minimum cold water absorption at the same established temperature, with a view to promote the use of burnt bricks for structural development and other possible applications in Anambra state, Nigeria where the clay is found. The Bricks was moulded using ratios 0:1, 1:0, 1:1, 1:2, 1:3, 1:4 and 1:5 for Ajagworo and Asha clay soils. The mixtures were tagged JSCi, where i = 1, 2, 3, 4, 5, 6, 7. The work evaluated the compositional characteristics of the soils and engineering properties of derived bricks to assess their suitability and as alternative to sandcrete as load bearing materials in the construction of houses. The Geo-physical investigations revealed that the soils are composed of varying proportions of sand, silt and clay, with the following proportions; sand 23-61% with an average of 35.4%, clay 19-56% with an average of 32.9%, silt 17-50% with an average of 31.7%, plasticity index ranging from 4.0-47.2 with an average of 27.6 while the sand fraction is mainly fine to medium grained. The chemistry of the soils in their order of abundance of major oxides is Silica SiO2 >Alumina Al2O3 > Iron oxide Fe2O3 > Magnesium oxide MgO > SO3 > Titanium oxide TiO2 > other oxides found in little/negligible sizes. The similarities in the Geo-chemical results suggests that they were all derived from a station point and all the samples fall under Alumino-Silicate type of clay because of their high value of Aluminum oxide and silicon oxide. The crushing strength of the fired test cubes ranges from 1.95-4.95N/MM2 and the cold water absorption ranges from 15.53-29.67%. Samples JSC5- JSC7 was able to satisfy the requirements specified by relevant Nigerian standards for fired bricks.

 

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