Ballast Mats ATP-DR Profiled

Transcription

1 Ballast Mats ATP-DR Profiled

2 Trelleborg ATP-DR Ballast Mat For Transit, Commuter or Railroad use, the Ballast Mat is designed to: Reduce degradation of ballast where depth is restricted By reducing ballast stress, Ballast Mat extends the life of any ballast depth, particularly restricted depths. Reduce ground or structure-borne vibrations Ground-borne vibration that might otherwise enter the foundations of neighboring buildings, travel through its structure and causing walls, floors and ceilings to pulsate, recreating noise known as Secondary Noise, noise that can not be reduced by closing curtains etc. Reduce impact forces on structures by acting like shock absorber The use of ballast mats results in longer vertical rail bending. This spreads the load over a greater area. Spreading the load reduces local stress on the structure. Compensate for restricted ballast depth Trelleborg ATP-DR Ballast Mats are produced from natural rubber elastomer, specifically selected to produce required performance characteristics. The fabric reinforced upper surface permits ballast to nest for track bed stability. The underside of mat has a regular pattern of projections that act like springs or shock absorbers and provide the correct shape factor to meet the stated performance and generous provision for drainage. Trelleborg ATP-DR Ballast Mats are generally supplied in rolls or precut lengths to suit project needs. Precut lengths are palletised for sling and/or fork lift handling on site. Mat Specifications TYPE 1 TYPE 3 TYPE 4 Capacity Nominal Axle (MT) * Dimensions Width 1220mm 1370mm 1370mm Thickness 30mm 22mm 20mm Length 9 metre max. all types Structure Top Layer 5mm 5mm 5mm Fabric - 1 Ply 1 Ply 1 Ply 1 Ply Isolation Layer 25mm 17mm 15mm Weight kg/m * Up to 80kph. Axle load capacity then reduces for higher speeds. Fabric Type Woven Fiberglass Tensile 6-7 Nm min Elongation at Break >10% Elastomer Top Surface Natural Rubber and SBR Body (Profiles) Natural Rubber

3 Physical Properties Ballast Mat All Types Tensile kpa 1380 Elongation At Break 100% Tear Resistance Nm 5.65 Values for top layer and do not include fabric. Hardness - Shore A Dynamics Dynamic-to-static stiffness ration (K d ) is 1.4 (+0.1/-free) for Type 1 and 1.86 (+0.1/-free) for Type 3 and Type 4. Temp Range Standard quality is suitable for service where B/M temperatures range between (-) 20 o C and (+) 70 o C. Note: Weights & dimensions are approximate, not exact.

4 Material Characteristics (Elastomer properties only. No fabric) Test Test Details Result Tensile Strength ASTM D412 Die C 1300 kpa Elongation at Break ASTM D412 Die C 100% Tear Resistance ASTM D624 Die C 5.65 Nm Compression Set ASTM F36 < 20% Resistance to Weathering ASTM F Note: Performed on 5mm thick top layer Resistance to Water Test Test Details Result Relative Reduction in Tensile 7 50 o C < 20% Relative Reduction in Elongation 7 50 o C < 20% Resistance to Ageing Test Test Details Result Relative Reduction in Tensile 7 70 o C < 10% Relative Reduction in Elongation 7 70 o C < 20% Dynamic Bed Modulus Test Details Result (gm/cm 3 ) Result (gm/cm 3 ) Result (gm/cm 3 ) 2.2 psi psi psi psi Static Bed Modulus Test Details Result (gm/cm 3 ) Result (gm/cm 3 ) Result (gm/cm 3 ) psi psi psi

5 At-Grade Installation A typical At-Grade installation on asphalt. The Ballast Mat was brought to site pre-rolled by contractor to ease handling and positioning. The joint flap, which is an integral part of the top surface, is secured to the top of the adjacent mat after the gap between mats is fully closed. Topside Underside

6 On Bridge Installation Ballast Mat laid on waterproof membrane. Cutting Ballast Mat (under 30 seconds). Two-man teams rolling Ballast Mat into place for immediate installation. Installed Ballast Mat, prior to securing and sealing of top edge.

7 In Street Installation Ballast Mat in Support Tub. Also, shows segment of first pour of track slab. Isolating obstruction with Ballast Mat. Pouring of first section of track slab (shown completed in above photo). Ballast Mat Top Seal installed - now ready for track construction, then second pour.

8 Other Trelleborg Products Elastomeric Bridge Bearings Pot Bearings Fixed (TF), Guided (TGe), Free (TGa) Trelleborg Transflex Bridge Expansion Joints Elastomeric Bearing Pads & Strips TESA SBS - Sliding Bearing Strip Acoustic Vibration Isolation Bearings Brisbane Phone +61 (7) Facsimile + 61 (7) tqr.info@trelleborg.com Melbourne Phone +61 (0) Facsimile + 61 (7) tqr.info@trelleborg.com Perth Phone +61 (8) Facsimile + 61 (8) tqr.info@trelleborg.com /11