Mechanical Properties of High-Strength Self-Compacting Concrete

Aijaz Ahmad Zende; Asif Iqbal A Momin; Rajesab B Khadiranaikar; Abdullah H Alsabhan; Shamshad Alam; Mohammad Amir Khan; Mohammad Obaid Qamar

doi:10.1021/acsomega.3c01204

Mechanical Properties of High-Strength Self-Compacting Concrete

ACS Omega. 2023 May 9;8(20):18000-18008. doi: 10.1021/acsomega.3c01204. eCollection 2023 May 23.

Authors

Aijaz Ahmad Zende¹, Asif Iqbal A Momin¹, Rajesab B Khadiranaikar², Abdullah H Alsabhan³, Shamshad Alam³, Mohammad Amir Khan⁴, Mohammad Obaid Qamar⁵

Affiliations

¹ Department of Civil Engineering, BLDEA's Vachana Pitamaha Dr. P.G Halakatti College of Engineering and Technology, Affiliated to VTU, Belagavi, Vijayapur 586103, Karnataka, India.
² Department of Civil Engineering, SECAB Institute of Engineering and Technology, Affiliated to VTU, Belagavi, Vijayapur 586109, Karnataka, India.
³ Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia.
⁴ Department of Civil Engineering, Galgotia College of Engineering, Knowledge Park I, Greater Noida, Uttar Pradesh 201310, India.
⁵ Department of Civil Engineering (Environmental Science & Engineering), Yeungnam University, Gyeongsan 38541, South Korea.

Abstract

In this research work, the mechanical properties of high-strength self-compacting concrete (HSSCC) were studied. Three mixes were selected, having compressive strengths of more than 70, 80, and 90 MPa, respectively. For these three mixes, the stress-strain characteristics were studied by casting cylinders. It was observed during the testing that the binder content and water-to-binder ratio influence the strength of HSSCC, and slow changes in stress-strain curves were seen as the strength increased. The use of HSSCC results in reduced bond cracking, leading to a more linear and steeper stress-strain curve in the ascending branches as the strength of the concrete increases. Elastic properties such as modulus of elasticity and Poisson's ratio of HSSCC were calculated using experimental data. In HSSCC, since the aggregate content is lower and the size of the aggregates is smaller, it will have a lower modulus of elasticity compared to normal vibrating concrete (NVC). Thus, an equation is proposed from the experimental results for predicting the modulus of elasticity of HSSCC. The results suggest that the proposed equation for predicting the elastic modulus of HSSCC for strengths ranging from 70 to 90 MPa is valid. It was also observed that the Poisson's ratio values for all three mixes of HSSCC were found to be lower than the typical value for NVC, indicating a higher degree of stiffness.