Abstract: The present invention relates to elastomeric polymer compositions comprising an acrylate and the reaction product of an acetoacetylating agent and a polyol. In particular, such elastomeric polymer compositions can be used in railway track structures. The invention also relates to a method for applying the elastomeric polymer composition in railway track structures, in particular, the method of applying the polymer composition may advantageously utilise a C-Michael addition reaction which is facilitated by the reaction product of an acetoacetylating agent and a polyol present in the polymer. The invention further relates to railway track structures and systems comprising the elastomeric polymer compositions.

Abstract: A polymer composition comprises a) a component 1 comprising a silane-terminated prepolymer; and b) a component 2 comprising water; and c) a component 3 comprising a silanol condensation catalyst. The composition is packaged in at least two separate packages prior to application, wherein no package contains all three components 1 and 2 and 3. In the composition water is present in an amount of 0.01 to 10 pbw per 100 pbw of prepolymer present in the composition, and the apparent viscosities of each of the packages is at most 95 Pa·s (Brookfield viscosity (A/6/10)) according to ISO 2555 at 23° C. The composition may suitably applied to railway track structures for the dampening of noise and vibrations of rails.

Abstract: A rail support block assembly includes a resilient member and a molded block having a top, a bottom and peripheral wall. The block is adapted for fastening one or more rails on the top. The prefabricated resilient member has an outer tray and inner tray arranged within the outer tray, and includes a resilient intermediate structure between the trays. The block is molded in a block mold into with the moldable material is introduced and allowed to harden. The block is fixed in the inner tray to extend under the bottom of the block and along a lower region of the peripheral wall. The resilient member may form a part of the block mold, so that a mold member combined with the resilient member delimit the mold for the block. The moldable material is introduced and adheres directly to the inner tray of the prefabricated resilient member.

Abstract: A polymer composition comprises a) a component 1 comprising a silane-terminated prepolymer; and b) a component 2 comprising water; and c) a component 3 comprising a silanol condensation catalyst. The composition is packaged in at least two separate packages prior to application, wherein no package contains all three components 1 and 2 and 3. In the composition water is present in an amount of 0.01 to 10 pbw per 100 pbw of prepolymer present in the composition, and the apparent viscosities of each of the packages is at most 95 Pa·s (Brookfield viscosity (A/6/10)) according to ISO 2555 at 23° C. The composition may suitably applied to railway track structures for the dampening of noise and vibrations of rails.