Photoluminescence piezospectroscopy (PLPS) is a laser-based noncontact and nondestructive stress measurement technique but has not been studied extensively in the field of civil structural health monitoring. Using the PLPS technique, the stress level can be measured by emitting a laser source onto a target’s surface. In this study, PLPS was attempted for noncontact stress measurement of concrete. Alumina is one of the chemical components of Portland cement, and is a highly sensitive material for PLPS. Therefore, alumina in concrete can be used as a passive stress sensor by PLPS. To investigate the spectral detectability at different alumina rates, cement mortar specimens were prepared with increasing concentrations of additional alumina. It was determined that spectral detectability increases with increasing alumina concentration. Then, uniaxial compression tests were conducted to investigate the relationship between stress level and spectral shifts. It was ascertained that compressive stress and spectral shifts have a negative linear relationship. Then, the effective piezospectroscopic coefficients were calculated to be − 0.1574 cm⁻¹/MPa and − 0.1468 cm⁻¹/MPa for the R1 and R2 bands, respectively. The experimental results reveal that application of PLPS to concrete can provide essential information for structural health monitoring and allow for preventive measures to be taken before collapse of cement structures.

光致发光压电光谱 (PLPS) 是一种基于激光的非接触和无损应力测量技术，但在土木结构健康监测领域尚未得到广泛研究。使用 PLPS 技术，可以通过将激光源发射到目标表面来测量应力水平。在这项研究中，PLPS 被尝试用于混凝土的非接触式应力测量。氧化铝是硅酸盐水泥的化学成分之一，是一种对PLPS高度敏感的材料。因此，混凝土中的氧化铝可以用作 PLPS 的被动应力传感器。为了研究不同氧化铝比率下的光谱可检测性，用增加浓度的附加氧化铝制备水泥砂浆试样。确定光谱可检测性随着氧化铝浓度的增加而增加。然后，进行了单轴压缩试验以研究应力水平与光谱位移之间的关系。确定压缩应力和谱位移具有负的线性关系。然后，计算出的有效压谱系数为 − 0.1574 cm^-1 /MPa 和 - 0.1468 cm ^-1 /MPa 对于 R1 和 R2 波段，分别。实验结果表明，PLPS 应用于混凝土可以为结构健康监测提供必要的信息，并允许在水泥结构倒塌之前采取预防措施。