Sep 2019 ENSURING THE IDEAL MIX PROPORTIONING OF YOUR CONCRETE MIX
Sephaku Cement explores what it takes to blend a great basic concrete mix that’s easy to work with, durable and versatile across a variety of projects.
Understanding the basic components and applying the correct concrete mix ratios when creating the ideal concrete mix is the only thing standing between you and your next home improvement project. Where some refer to mix proportioning, others may speak about a cement mix design, both really refer to the accurate proportioning of the various materials that go into mixing the ideal concrete blend
With the intention of producing a fool proof concrete mix, begin by always taking into account the purpose of the concrete and the required strength of the project. Where most instances will quite adequately make use of a general purpose product such as Sephaku 32 or Sephaku 42 N, more elaborate engineering projects or those with load bearing qualities may be better suited to the use of a more sophisticated strength class cement product such as Sephaku 42 R.
Another important consideration to account for when calculating the ideal mix is the desired finish of your concrete mix which is largely influenced by the size of aggregate that the cement ratios are blended with. For smooth and closely contacted concrete such as plaster or mortar, fine sand is blended with cement to produce a uniform finish. For a more rough finish but with added strength and load bearing qualities, larger aggregate stones are mixed with cement and sand that is ideally used in paving, slabs, handmade bricks or lintels.
Factoring in the “placability” of your concrete mix this is another characteristic that will determine a “designer concrete mix”. Placability describes the ease/way in which mixed concrete are poured or “placed” as well as the finish of the cured result. It can be more simply described or measured by the concrete mix slump which is an indication of consistency. Once again influenced by the type of aggregate that the cement and water ratios have been mixed with, a slump test should reveal an ideal mix that maintains a relative slump or mound without being too stiff and rigid or collapsing into a flat, soggy mess. Correct ratios of a concrete mix will result in the ideal placability of a concrete mix that will also not segregate as it is pumped or poured or otherwise placed and the objective of “fully compacted” is achieved.
Outside of blending cement with the suited aggregate and mixing both with the precise amount of water, making use of the finest grade cement product is possibly the most critical consideration outside of factoring for the ideal mix proportioning. While cost and economy comes into play, opting for the most affordable product (but compromising on quality) may benefit your budget in the short term but will, with certainty, end up costing more to repair in the long term. Not only does the wrong choice of the grade/class of cement or too much water result in a poor quality concrete product but it will lack in strength and durability and will often see to it that more Portland Cement will be required to produce an ideal concrete mix. It is strongly suggested, if there is a lack of knowledge or understanding of mix designing, that the suggested proportions given on every bag of quality guaranteed Sephaku Cement bag are used.
Together with the ideal mix proportioning of your concrete mix, sealed with the Sephaku stamp of quality assurance Sephaku Cement guarantees only the most pure grade original Portland cement blended with the finest quality extenders, expertly engineered to enhance performance and curing