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A Comparative Analysis of Batching by Weight and Volume Towards Improved Concrete Production

Joshua, Opeyemi and Fagbenle, Olabosipo I. and Ogunde, Ayodeji and Omuh, I. O. A Comparative Analysis of Batching by Weight and Volume Towards Improved Concrete Production. Industrial Engineering Letters (IEL). . (Submitted)

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Batching of concrete is generally the proportioning of the different constituents of concrete before mixing which could be by weight or volume. Mix design is better to achieve a concrete of desired properties. Standardized Prescribed Concrete (SPC) mix design is mostly adopted in mass concreting to high strength concreting applications in most developing nations. British standards accept volume batching for SPC only in mass concrete (<15MPa) but batching by weight for normal and higher strength concrete. Structural concrete like in storey buildings requires at least a normal strength concrete (>20MPa) recommended to be batched by weight. Designs batched by volume have been identified as the most commonly used method in concrete production in Nigeria and most developing nations, especially by medium to small scale construction firms. This research work developed a modified volume batch mix design that will be equivalent to SPC design mix, batched by weight in normal and higher strength concrete. The physical properties of the constituent concrete materials, fine aggregate, 12mm and 19mm sized coarse aggregates were determined. The strength of SPC mix of ST2, ST4 and ST5 to British standard were determined when batched by weight and their volume equivalents mix-design batch determined. The strengths of these SPC mixes were batched by volume and their weight equivalent batch-design determined. A relationship was determined between both batching mix-design methods for all the prescribed mixes and strengths using the binder-aggregate and coarse-fine aggregate ratios, such that the preferred weight batching design mix could be achieved by a modified mix design batched by volume. This study concludes that concrete mix design batched by weight is superior to when batched by volume and the desired design batching by weight could be achieved by generating a modified mix-design-batch by volume. This will improve the quality of concrete storey buildings in most developing nations

Item Type: Article
Subjects: T Technology > TH Building construction
Depositing User: Dr. Opeyemi Joshua
Date Deposited: 06 Sep 2017 10:47
Last Modified: 06 Sep 2017 10:47

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