High Strength Concrete
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Date
2023
Authors
عبد الله شحادة
احمد يوسف
محمد همشري
ترنيم قبها
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Abstract
Concrete is the most important material in construction, it is used in almost all the structural
elements in concrete structures. For example, concrete is poured into slabs, columns, beams
and footings. This gives concrete a significant and critical role in construction. Due to this
importance, concrete should be designed and prepared in a way that makes it workable, and
strong enough. Without all those factors taken into consideration, concrete may fail which
causes a failure in the structural element or even the whole structure.
This study will mainly cover one of the most common characteristics of concrete, which is
concrete strength. As well as multiple other characteristics to be kept in range according to
Palestinian Specifications, workability mixing ratios and methods etc.
In Palestine, the strongest concrete mix used is B400. However, it is rarely used, in some
large projects where more floors are built. Hence, this study will aim at preparing a new,
stronger concrete mix that can be used for even larger projects in the future, and at the same
time, keeping all other specifications in range. This concrete mix is supposed to be having a
strength of 600 kg/cm2
, categorized as B600 concrete.
The methodology of the preparation process of samples will be done using specific steps,
such as using certain aggregate gradations, specified water/cement ratio and using certain
additives with known percentages such as water reducing agents WRA (such as
superplasticizer) and accelerators. As well as defining the proportions and components of
concrete. An in-detail demonstration of the mixing process itself is made, such as mentioning
the equipment and material used and how each equipment was exactly used in order to get the
final mix done and ready to use.
As mentioned earlier, this concrete mix is not usually used in Palestine. Besides no previous
studies were made before in An-Najah University to prepare a concrete sample with this
strength. Therefore, it is our goal to design and prepare this new high compressive strength
concrete mix so it can be used for projects that are larger, more complex and subjected to
massive and heavy loads.
Finally, cost analysis were made to the mix design that achieved the required compressive
Strength.