Authors: Badrinarayan Rath; Shirish Deo; Gangadhar Ramtekkar
Addresses: Civil Engineering Department, Wollega University, Ethiopia ' Civil Engineering Department, National Institute of Technology Raipur, Raipur, Chhattisgarh, India ' Civil Engineering Department, National Institute of Technology Raipur, Raipur, Chhattisgarh, India
Abstract: A lot of cracks are developing inside and on the surface of the concrete structure due to the early shrinkage of concrete, which decreases the strength, durability, and increases the life-cycle cost of structures. Hence prediction of shrinkage is very important to assess the risk of failure of the structure. The previous shrinkage models usually focused on the linear shrinkage of control concrete or cement is replaced with one or two kinds of supplementary cementitious materials without fibre. But the volumetric shrinkage model for the simultaneous replacement of cement and sand with supplementary cementitious materials with fibre has not been developed. In this research, the previous ACI model has been modified to forecast the volumetric shrinkage of control concrete or concrete in which both cement and sand are partially replaced with supplementary cementitious materials individually or simultaneously with glass fibre.
Keywords: ACI209R-92 model; silica fume; blast furnace slag; glass fibre; volumetric shrinkage; shrinkage cone; shrinkage strain; comparison of shrinkage models; fibre reinforced concrete; regression analysis.
International Journal of Sustainable Materials and Structural Systems, 2021 Vol.5 No.4, pp.369 - 388
Received: 02 Mar 2020
Accepted: 09 Jan 2021
Published online: 03 Mar 2022 *