The base layer constructed by cement-stabilized macadam (CSM) has been widely used in highway construction due to its low elasticity deformation and high carrying capacity. As a bearing layer. the CSM base is not exempt from fatigue cracking under cyclic loading in the service process. Cracks in the base will create irreversible structural and functional deficiencies. https://allfixelectricales.shop/product-category/door-hinge-bush/