Digital speckle correlation method is a kind of integral, non-contacting, high-automation and high-precision optical deformation measurement method, which has its unique superior performance such as high sensitivity, easily identifying cracks and estimate accuracy, compared with other deformation measuring techniques. As a kind of deformation measurement method for solid material surface, it gets fast application in the deformation measurement for construction projects. In this paper, the basic principle of digital speckle correlation method is elaborated, and the application progress of digital speckle correlation method in mechanical behaviors measurement and analysis of building materials are summarized, including the concrete, asphalt material, Portland cement, composite materials, explosion-proof materials with negative Poisson's ratio, and architectural structures such as concrete structure, bridge structure, geotechnical structure and wooden structure The application prospect and development trend of digital speckle correlation method for building materials and architectural structures in service are generalized and predicted as well. With significant boost of the measuring accuracy and speed of digital speckle correlation method, it is envisioned that combined with the methods of optical fiber technology and computer simulation, micromechanics behaviors of three-dimensional solid of building materials and architectural structures can achieve dynamic real-time monitoring.

digital speckle correlation method  /  building materials  /  architectural structure  /  mechanics analysis