Three Equations Method for Normal Concrete Mix Design

Hakim S. Abdelgader ； Abdullah F. Saud ； Ali. S. El-Baden

《Study of Civil Engineering and Architecture》 2卷4期 (2013/12) Pp. 109-113

並列摘要

Considerable study, particularly in the last decades has led to a much better understanding of the structure and behavior of concrete, which has been accompanied by an improved and more sophisticated technology and the product current made, in its variety of forms, is much more capable of satisfying the increasingly stringent demands required. Because the behavior of both fresh and hardened concrete is significantly related to their composition, it should be possible, at least in principle, to choose the latter to provide satisfaction in the former. This is mix design; the choosing of the ingredients to provide, economically, concrete possessing desired properties. It implies the deliberate proportioning of cement, fine and coarse aggregates and water, taking into account not only the specified concrete properties but also the characteristics of the specific materials used. The standard methods of designing concrete mixes depend on experience of how concrete mixes behave when made with certain familiar representative materials. This experience is collected in charts or tables which are used as a starting point in choosing mix proportions for laboratory trial mixes. Tests on these trial mixes then indicate what adjustments need to be made. Currently, there are many international methods locally approved for mix designs. The ACI and BS methods are the most commonly used. Along with the aforementioned methods, there are many other methods used for concrete mix design, such as ＂The Three Equations Method (Bolomeya Method)＂, which will be illustrated in this paper, in addition to the assessment of the laboratory results of concrete mixes produced by this method.

並列關鍵字

Bolomeya Method ； Mix Design ； Concrete ； Three Equation Method