PSI - Issue 70

Available online at www.sciencedirect.com

ScienceDirect

Procedia Structural Integrity 70 (2025) 271–278

Structural Integrity and Interactions of Materials in Civil Engineering Structures (SIIMCES-2025) Predicting Mechanical Properties of Glass Fiber Concrete Using Response Surface Methodology V. Preethi a , Thunuguntla Chaitanya Srikrishna a, *, Vishal Singh a , G. Mallikarjuna Rao a , Srikanth Koniki a a Department of Civil Engineering, Chaitanya Bharathi Institute of Technology, Gandipet, Hyderabad, India Abstract The addition of glass fibers to plain cement concrete (PCC) has the potential to enhance its mechanical properties. However, attaining the ideal combination of fiber length, dosage, and diameter remains a challenge. The present study explores the impact of glass fiber (GF) characteristics on the mechanical behavior of concrete using Response Surface Methodology (RSM). A thorough literature review was conducted to identify key parameters for analysis, comprising of cement content, water content, compressive strength, split tensile strength, flexural strength, and fiber aspect ratio. To systematically assess the effects of varying fiber proportions and cement dosages, an experimental design was developed using Design Expert software. The RSM approach facilitates the identification of significant interactions among input parameters, enabling the prediction of optimal mechanical properties with the given range. While previous studies provide valuable insights on GF reinforced concrete, there is still a lack of a well-defined relationship between fiber attributes and concrete performance. This research seeks to address that gap by utilizing RSM to develop predictive models for optimizing PCC reinforced with glass fibers. The expected findings will offer deeper insights into how fiber dosage, length, and diameter affect the strength and workability of PCC. Ultimately, this study aims to provide a scientific foundation for optimizing glass fiber-reinforced concrete, promoting efficient material usage and enhancing structural performance.

© 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers

Keywords: Response Surface Methodology (RSM); Glass fiber; Aspect ratio; Mechanical Properties;

* Corresponding author. Tel.: +91-8019206828 E-mail address: chaitkrrish@gmail.com

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers 10.1016/j.prostr.2025.07.053