A horizontal layer of mortar underneath a layer of masonry.
（砖石层下面的）灰浆层
Example sentencesExamples
Full bedding of the bed joint and placing of the wall tie in the mortar assures full bond.
The diameter or width of the FRP bars is limited by the thickness of the mortar bed joint, which is usually not larger than 3/8 inch.
Cracks form if adequate control joints and bed joint reinforcement are not provided.
Mortar oozes out of the head and bed joints, wood studs may be bowed and reduce the cavity size, and other imperfections interfere with the cavity's cleanliness.