An Innovative Evaluation of How the Water-to-Cement Ratio Affects the Concrete’s Air-Void Parameters
摘要
Concrete air void parameters are crucial indicators of a material’s resistance to deterioration and freeze-thaw damage. A linear traverse and account point approach of a cut and polished concrete section under a microscope are the two methods used in the ASTM C457 test, which is the recognized standard method for evaluating concrete air void. These two conventional methods are labor-intensive, expensive, time-consuming, and prone to human error because of operator fatigue. This study evaluated concrete air void parameters using a novel image-processing technique. The technique makes use of a microscope, computer, video camera, and image analysis software. Cement paste, air voids, and aggregates could all be easily distinguished in the high-contrast images that were taken. The standard method and the suggested image processing method were used to prepare concrete materials with three water-to-cement ratios and assess the air void parameters. The image processing technology saves time and money by determining the air void properties of concrete. The air space in concrete increases in tandem with the water to cement ratio (w/c). Compared to lower w/c ratio concrete, higher w/c ratio concrete is more effective at minimizing freeze-thaw damage.