Abstract
In this work, we investigated the influence of PZT volume fraction, composite thickness and cement matrix on the performance of 1–3 connectivity cement-based piezoelectric composites working in d15 shear mode. Results revealed that the piezoelectric strain coefficient d15 and the relative dielectric coefficient εr decrease with the decrease of the PZT volume fraction and increase with the increase of the composite thickness. The piezoelectric strain coefficient d15 of the composite specimens with Phosphoaluminate cement (PALC) matrix is the largest, followed by Sulfoaluminate cement (SAC) matrix and Portland cement (PC) matrix. The relative dielectric coefficient εr of the composite specimens with PC matrix is the largest, followed by PALC matrix and SAC matrix. The piezoelectric voltage factor g15 increases with the decrease of the PZT volume fraction and decreases with the increase of the composite thickness. The piezoelectric voltage factor g15 of the composite specimens with PC matrix is the smallest, and the values of specimens with SAC matrix and PALC matrix are very close.
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