Development of Ductile Concrete without Coarse Aggregates by Using Steel and Basalt Fibers

The current project work is based on developing RPC (Reactive Powder Concrete) which can satisfy all the standards and requirements of concrete technology industry. The standards and requirements must be met in terms of providing good compression and tensile resistance strength. The scope of the study is mostly depended on the performance of ingredients of the RPC which are fine aggregates, admixtures, steel and basalt fibers. Nowadays construction industries of all over the world look at the RPC with suspicious mind set, because they think RPC qualification is not confirmed yet, and they do not want to risk too much by using it. Thus in order to get strong acknowledgement in industries, it is needed to make many qualified researches, experiment works and it is strongly required to obtain the good results. In the following project work it is tried to prove that RPC is competitive to HPC (High Performance Concrete), by making good RPC mixes, and experimenting them to get the results.
The methods of conducting this research are based on the experimental analysis of the RPC and the analysis of the results obtained. The first stage of methodology is the creating the special mix design for producing RPC. The next comes the selection and preparation of materials. Then the testing works on the concrete in its fresh state. After fresh concrete testing the curing process (which has 56 maximum curing days), comes. And the last stage of the activity is testing the hardened concrete in terms of compression and tensile strength.
The results for slump flow test, V funnel test, Compression and tensile tests were obtained and tabulated in this project work. As a conclusion from the results obtained it is possible to say that the performance of steel fibers is superior compare to the performance of the basalt fiber within the RPC mixture. Because RPC with steel fibers gives good characteristics in workability, flow ability, compression resistance and tensile resistance.