Effect of synthetic calcium-silica-hydrate compounds on the properties of self-compacting concrete used in road pavement

Bahar Mamashli¹ Seyed Rahim Baharavar² Karim Nasab³

1) M.S.C in Structural Engineering, Shams Institute of Higher Education, Gonbad, Iran.
2) PHD in Structural Engineering, Shams Institute of Higher Education, Gonbad, Iran.
3) 3.M.S.C in Road Construction, Shams Institute of Higher Education, Gonbad,

IOI Code : ACCD-ACAAHE
Publication : 10th International Conference on Applied Researches in Science & Engineering (carseconf.com)
Abstract :
    Today, concrete is widely used as one of the most important materials in the construction industry. With advancements in concrete technology, innovations in concrete production have given rise to a field of research known as special concretes , they are manufactured to meet various expectations, depending on their areas of use. The use of various additives in concrete, such as fibers can alter its workability and properties. In this research, efficiency investigates of polypropylene fibers on the characteristics of plastic concrete prepared with Ash bentonite has been studied. To conclude, plastic concrete was first produced with 20% bentonite content; subsequently, the specimens were reinforced with polypropylene fibers with measurements of 1 cm and 2 cm at dosages of 0.5%, 1.0%, and 1.5% by weight of the concrete. Given the maximum aggregate size of 14 mm, the performance was evaluated through compressive and flexural strength tests, as well as assessments of water absorption and carbonation. Based on the completed tests and resulting data, polypropylene had a favorable impact on the physical properties of the concrete, with samples containing 0.5% fibers showing superior performance in water absorption tests. Furthermore, the fiber-reinforced concrete samples revealed improved flexural performance as fiber content increased; flexural strength also rose with an increase in specimen size.

Keywords : plastic concrete polypropylene fibers concrete flexure carbonatio