Microwave heating refers to the process where microwave energy is used to induce changes in the microstructure of cementitious materials. This technique can be applied to selectively weaken parts of concrete structures, facilitating easier demolition or recycling. Understanding the impact of microwave energy on concrete is also crucial for assessing potential vulnerabilities in structures exposed to environments where microwave or other electromagnetic exposures are prevalent, such as in areas near high-power transmission lines or radar facilities.