The Impact of Pozzolan Incorporation on the Strength of Concrete Reinforced with Hybrid Fibers and Confined by FRP Wrapping Systems
Abstract
Time, cost and quality are three important factors in implementation that have an important impact on the manufacturing industry. Any progress or development that improves these three factors will always be of interest to civil engineers. Whenever these developments affect the construction industry, sufficient research should be done on their benefits and harms and the necessary measures should be taken to implement them in the construction industry. The use of pozzolans and Fiber-Reinforced Polymers (FRP) systems is an important factor in increasing the strength properties of concrete. The FRP system is defined as fibers and resins used to make composite layers, so that the resins used are used to bond several composite layers to the concrete surface and coatings are used to protect the materials. Reinforcement of building columns with the help of twists is one of the common methods to increase the strength and strength of these columns. Another factor that increases the strength of concrete is the use of pozzolans. The aim of this study was to investigate the different percentages of pozzolans and the number of FRP turns in increasing the strength properties of concrete. For this purpose, having three mixing schemes A, B and C, the required samples of these three schemes are removed. Mixing scheme A does not have pozzolans and mixing designs B and C have 10 and 20% of pozzolans, respectively. Samples No. 1 have no turns and Samples 2 and 3 have one or two turns. Compressive strength tests have shown that we see the highest percentage increase in resistance in specimens B, which has 10% pozzolan. The results showed that the simultaneous use of 10% pozzolan and 2 rounds of FRP had a significant effect on increasing the compressive strength of the samples at the age of 90 days. The results for the tensile strength test show that the use of pozzolan and FRP screw has a small effect on its increase and this effect is about 6% in most cases.
Keywords:
FRP helix, Pozzolan, Compressive strength, Tensile strength, PermeabilityReferences
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