To provide a rail track premixed mortar and its construction method for requiring only once filling to a gradient portion of a ballast way and satisfying smooth filling of the mortar into the ballast way and easy troweling of the gradient portion at the same time without complicating site construction.
The rail track premixed mortar 10 is adopted for which a J14 funnel has a flow-down time of 3-5 seconds and a static flow of 160 mm or less and a filling body has an aging compression strength of 10 N/mm2 or more for two hours. Thus, smooth filling of the mortar 10 into the ballast way 12 and easy troweling of the gradient portion of the way 12 are satisfied during filling at the same time. As a result, only one type of mortar 10 is required for the gradient portion of the way 12 and easy site construction work is achieved.
TSUTSUMI TETSUO
NAKANO SHOICHI
TOKUNAGA KENJI
