Monitoring Strength Development of Cement Substituted by Limestone Calcined Clay Using Different Piezo Configurations

Abstract

Recently developed limestone calcined clay cement (LC3) with low clinker factor is growing rapidly in the construction industry because of its several benefits over ordinary Portland cement (OPC) and Portland pozzolana cement (PPC). In this paper, monitoring strength development of cement substituted by (LC3) using different piezo configurations was studied. The experimental study was carried out on concrete cube specimens of OPC and LC3, in which different piezo configurations such as embedded piezo sensor (EPS), surface-bonded piezo sensor (SBPS), jacketed piezo sensor (JPS) and non-bonded piezo sensor (NBPS) are installed to the specimen to acquire data in the form of conductance and susceptance signatures via electro-mechanical impedance (EMI) technique. The sensitivity of the different piezo configurations was calibrated with the compressive strength, based on the results, it can be concluded that the compressive strength of OPC and LC3 is comparable to each other. All the piezo configurations were effective in monitoring the compressive strength; however, the embedded sensors, EPS and JPS, perform the best in LC3 and OPC, respectively.