Open Access Open Access  Restricted Access Subscription Access

Study on the Creation of a Cement-based Composite with a Strain Hardening Agent for Concrete Retrofitting Applications

Er. Ravinshul gautam, Ujjwal Boora

Abstract


In earthquake-prone regions with a rapidly growing population, the demand for retrofitting existing structures has become critical for civil engineers. To meet this demand efficiently and economically, there is a pressing need for innovative materials. Strain Hardening Cement-Based Composites (SHCC) emerges as a promising solution, featuring a unique combination of fine particles and fibers. Notably, SHCC possesses the capability to penetrate damaged structures without requiring vibration. Experimental investigations have focused on studying the impact of Ground Granulated Blast Furnace Slag (GGBS) content along with Polyvinyl Alcohol (PVA) fibers on SHCC properties. Fly ash in the mix has been replaced with varying GGBS content (10%, 20%, and 30%), and two percentages of PVA fibers (2.0% and 3.0%) with a length of 12 mm have been employed. Results indicate that an increase in GGBS content enhances the tensile strength and durability of SHCC, with marginal changes in compressive strength. Moreover, a higher percentage of PVA fibers contributes positively to both mechanical strength and durability properties. In the broader context, this study aligns with the exploration of Modelling, Simulations, and Dynamic Fracture Behavior of Composites under High Strain Rate Loading, providing a comprehensive understanding of material responses in seismic scenarios.

 


Full Text:

PDF

References


Aveston, J., Cooper, G. A., Kelly, A. (1971). The properties of fiber composites. In Conference proceedings. IPC Science and Technology Press Hellertown, 15, 15-24.

Ahmed, A., Khalil, A. (2015). Improving the Failure Mode of Over-Reinforced Concrete Beams Using Strain-Hardening Cementitious Composites. Journal of Performance of Constructed Facilities.

Achtemichuk, S., Hubbard, J., Sluce, R., Shehata, M. H. (2009). The utilization of recycled concrete aggregate to produce controlled low-strength materials without using Portland cement. Cement and Concrete Composites.

ASTM C. (2003). 618. Standard Specification for Fly Ash and Raw or Calcined Natural Pozzolan for Use as a Mineral Admixture in Portland cement Concrete.

ASTM, C. (1994). 33, Standard specification for concrete aggregates. Annual Book of Standards.

Barros, J. A. O., Esmaeeli, E., Fasan, L., Prizzi, F. R. L., Sena-Cruz, J. (2015). Retrofitting of interior RC beam–column joints using CFRP strengthened SHCC: Cast-in-place solution. Composite Structures.

Kondraivendhan, B., Pradhan, B. (2009). Effect of ferrocement confinement on behavior of concrete. Construction and Building Materials.

Baghi, H., Barros, J. A. O. (2016). Shear Properties of the Strain Hardening Cementitious Composite Material. Journal of Materials in Civil Engineering.

Boukini, A., Swamy, R. N., Bali, A. (2009). Durability properties of concrete containing 50% and 65% slag. Construction and Building Materials.

Choi, W. C., Yun, H. D., Kang, J. W., Kim, S. W. (2012). Development of recycled strain-hardening cement-based composite for sustainable infrastructures. Composites Part B: Engineering.


Refbacks

  • There are currently no refbacks.