M50 what harsh non-shrinkage mortar is used for

M50 harsh non-shrinkage mortar used in national official documents about the M50 harsh non-shrinkage mortar rules are as follows: ( A detailed performance index is attached) The passenger dedicated line bridge pot rubber bearing interim technical conditions 'of M50 harsh non-shrinkage mortar describe 7. 3. 3. Before 4 t beam falls beam at the top of the bearing pad stone spread a layer of 20 ~ 30 mm thick M50 harsh non-shrinkage mortar, mortar top spread into the shape of a around slightly above middle, anchor bolt hole is also dao with corresponding M50 mortar. After being on both ends of the beam body are in place to carry out the, (with a temporary support Or wood) Beam retaining wall on both sides of the body, prevent the beam body roll. Harsh mortar sprinkler maintenance in a timely manner.