I am currently in my third year of structural engineering (@Melb Uni) and the implications EdenCrete on concrete in my opinion are as follows:
1) Increase in Compressive Strength (Approx 41%): This subsequently results in less concrete required to meet design specifications (less volume of concrete required). Additionally, designs may also be limited by size constraints so it is not always feasible to just pour more concrete for more strength.
2) Increase in Tensile Strength: As Gargoyle80 pointed out which is completely correct, weight governs how far aport the support beams need to be as the tensile properties of concrete are weak when compared to its compressive strength. A bending moment is generated when a force(the weight of the cars above and its own weight) is extended away from a support column. This cause the structural element to bend and is maximum in the middle of two columns. This therefore is a key area of reinforcement and determines how thick and how much reinforcement is required. Therefore, an increase in tensile strength means less reinforcement is required and a thinner slab can be used. (Both cost savers, reinforcement steel is comparably expensive)
Tensile strength is the main thing structural engineers consider as this is where failure is most likely to occur.
3) RC limitation: Rusting of Exposed steel is an issue which can reduces the strength of steel. Hence, reduced strength of Reinforced Concrete. Also, can cause the concrete to crack, i believe it expands when it rusts (may need to check up on this after my exams).
4)
"While often overlooked, the shrinkage potential of a concrete mixture is perhaps the most important consideration for concrete used to construct industrial floors on ground. All concrete, even shrinkage-compensating concrete, shrinks. Because of a loss in volume, concrete shrinkage can lead to cracking when base friction or other restraint occurs. Shrinkage also causes curling/warping which can lead to a variety of slab issues including decreased load-carrying capacity (structural cracking) and joint stability problems such as spalling. Shrinkage-induced cracking and curling/warping can also contribute to decreased vehicle ride (a potential health and safety issue) and floor covering failures (buckling caused by reverse warping). In short, shrinkage is a factor in most concrete slab-on-ground performance issues. To increase the performance of concrete floors, shrinkage must be better understood and addressed."
- http://www.cement.org/for-concrete-...e-concrete/focus-on-floors/concrete-shrinkage
Also there is a cost of curing concrete. Which more or less means just making sure that the conditions on the surface match those that are within the middle. This ensures the concrete is uniform throughout and there is no areas of weakness.
5) Reduces Permeability: Allows moisture to get into the concrete and rust away reinforcement. As mentioned before this leads to a decrease in strength and the formation of cracks.
6)Abrasion resistance: Water expands as it freezes. Places stress within the concrete. May not have much of an impact at first, however it effects the service life of the concrete.
Please ask questions and ill try and elaborate on any areas i have not been clear on
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