# High-Performance Concrete Nanomodified with Recycled Rice Straw Biochar
## 5 Conclusions  
As a result of the study, we obtained several scientific and practical results.  
1. A method for the disposal of agricultural waste has been proposed, and technology has been developed for use in concretes nanomodified with processed rice straw biochar.
2. The main parameters of the raw materials used are determined, and dependencies are established as a result of experiments, which are the development of existing theories and new knowledge for the agricultural and construction branches of science.
3. In the course of the research work, a sample of rice straw biochar modified by the electromagnetic method was obtained.
4. It has been established that the most effective dosage is the addition of rice straw biochar in the amount of 6% by weight of cement.
5. In a quantitative aspect, the improvement in the properties of concrete is expressed in the increase in its physical and mechanical characteristics and changes in deformability according to the results of the analysis of the stress-strain diagrams performed by us. The increase in characteristics was: for cubic compressive strength--19%, for prismatic compressive strength--22%, for axial tensile strength--25%, for tensile strength in bending--17%, for the elastic modulus--14%. The deformation characteristics decreased for deformation under axial compression--12%, for deformation under axial tension--24%.
6. According to our preliminary estimates, introducing a finely dispersed additive of rice straw biochar modified by the electromagnetic method leads to a decrease in cement consumption by up to 10%.
7. The results obtained demonstrated suitable compatibility of experimental data and the possibility of testing the technology in production conditions. The ecological and economic effects of the proposed technology and the manufactured material are noted.
8. At the microscopic level, a study of the used raw materials, which is obtained as a result of processing, was carried out, and its parameters are at the same time a new material and a springboard for further research, as well as the empirical and scientific data already obtained, are recommended for further research and practical application.  
Conceptualization, S.A.S., E.M.S. and A.N.B.; methodology, S.A.S., E.M.S. and A.S.S.; software, S.A.S., E.M.S., A.N.B. and N.B.; validation, N.B., S.A.S., E.M.S. and A.N.B.; formal analysis, A.S.S., S.A.S. and E.M.S.; investigation, L.R.M., S.A.S., E.M.S., A.N.B. and N.B.; resources, B.M.; data curation, S.A.S., E.M.S. and A.S.S.; writing--original draft preparation, S.A.S., E.M.S. and A.N.B.; writing--review and editing, S.A.S., E.M.S. and A.N.B.; visualization, S.A.S., E.M.S., A.N.B. and N.B.; supervision, L.R.M. and B.M.; project administration, L.R.M. and B.M.; funding acquisition, A.N.B. and B.M. All authors have read and agreed to the published version of the manuscript. This research received no external funding.  
Not applicable.  
The study did not report any data.  
**Acknowledgments:** The authors would like to acknowledge the administration of Don State Technical University for their resources and financial support.  
**Conflicts of Interest:** The authors declare no conflict of interest.