High ductility cementitious composite (HDCS)

The first phase of this study assessed the effect of natural pozzolan (NP) content on the mechanical properties and bond strength of CCHD high-ductility cementitious composite for the repair of reinforced concrete structures. In the second phase, bending parameters were measured using the 4-point bending test. The experimental results showed that PN reduces the mechanical strengths of CCHD at all ages. In addition, the use of a high proportion of natural pozzolan significantly increases the capillary absorption coefficient and shrinkage, and decreases bond strength. It should also be noted that the use of a high dosage of NP significantly improves the deformability of CCHDs. Based on the results obtained in this study, it can be concluded that CCHD is an ideal material for repair due to its mechanical properties, its appropriate dimensional stability with the substrate in addition to its high ductility.

Autorentext

Dr.CHOUCHA Said Geomaterials Laboratory. Civil Engineering Department,University of Chlef, Algeria.