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BRIDGE BEARING

The uses of NR are myriad and a complete summary is not really possible. Its unique and excellent properties are utilised in tyres, shock mounts, seals, isolators, couplings, bridge bearings, building bearings, footwear, hose, conveyor belts, plant linings and many other moulding applications. [Pg.86]

Lead monoxide or litharge is mainly used as an accelerator activator, and acid acceptor, and is especially useful in water resistant compounding. Litharge can also be used in long slow cures for such articles as ship s fenders, bridge bearings, etc., where it enables the inside of the product to fully cure before the outside becomes overcured with the possibility of degradation or reversion of the outer layer of the product. [Pg.131]

For all tests, the minimum time between forming the material and testing shall be 16 h. When test pieces are cut from products or where whole products, e.g. bridge bearings, are tested, considerably more than 16 h may be necessary. In these cases, the minimum time shall be given in the product specification and/or relevant test method. [Pg.52]

A creep test is in essence very simple - a constant force is applied to the rubber and the change in deformation with time monitored - but detailed procedures were not standardised internationally until 1988 and there is still no general ASTM method. This reflects the relatively small amount of creep testing carried out on rubbers, which in turn is due to the relatively few rubber products where creep is a problem. This is in contrast to the situation with thermoplastics where creep performance is a prime engineering factor. However, for particular applications of rubber where creep is important, for example bridge bearings, a considerable amount of data has been generated. [Pg.202]

Ohmae, T Nishinaga, T Wu, M. lyoda, M. Cyclic tetrathiophenes planarized by silicon and sulfur bridges bearing antiaromatic cyclooctatetraene core syntheses, structures, and properties, J. Am. Chem. Soc. 2009,132, 1066-1074. [Pg.190]

Bridge bearings Paste High loads, weather... [Pg.9]

Diets-Alder reaction,2 This substance exhibits high dienophilic reactivity comparable to that of maleic anhydride. It reacts with 5-substituted cyclopentadienes to form adducts in which the 7-substituent is exclusively anti to the bridge bearing the chloro and chloroformyl groups. Thus it reacts with 5-benzyloxymethylcyclopentadiene (1) to give the adduct (2) as a 2 1 mixture of exo- and endo-acid chlorides in about 99%... [Pg.376]

Use Antivibration components, transmission seals, hoses, bushings, automotive weatherstrip, solid tires, storage tanks, and bridge bearing pads. [Pg.1239]

As a result of its very low gas permeability, butyl rubber is used predominantly in the inner tubes of tires and inner liners for tubeless tires. Some of the other uses of butyl rubber include sealants, adhesives, hoses, gaskets, pads for truck cabs, bridge bearing mounts, and other places where vibration damping is important. [Pg.456]

Design a square-section bridge bearing (W B, Figure 8.17) to accommodate a horizontal movement Ax of up to SO mm (due to thermal expansion), and to support a maximum load of 120 tonnes, with a maximum deflection Ay = 3 mm under vehicle loading F 25 tonnes. The maximum permitted shear strain y in the rubber is 0.5. For stability, the width W of the bearing should be 5 times the total thickness D of rubber. Use a natural rubber of 60 IRHD, for which k = 0.57, and E - 4.45 MPa. [Pg.403]

Figure 5. FEA model of east headframe wall—displays forces funneling towards bridge bearing locations... Figure 5. FEA model of east headframe wall—displays forces funneling towards bridge bearing locations...
Fig. 1. Various articles in which rubber is bonded to metal or other materials (a) bridge bearing (b) cylindrical bearings (c) conical bearing (d) spherical segment bearing (e) cross section of radial tyre... Fig. 1. Various articles in which rubber is bonded to metal or other materials (a) bridge bearing (b) cylindrical bearings (c) conical bearing (d) spherical segment bearing (e) cross section of radial tyre...
Adhesives, automotive, bridge bearing pads, cable jackets, cellular products, coated fabrics, conveyor belts, footwear, hose, power transmission belts, profiles, roll covers, sheeting, and tank lining. [Pg.1262]

P. B. Lindley, Design and use of Natural Rubber Bridge Bearings, NRPRA Technical Bulletin, The Natural Rubber Bureau, 1964. [Pg.69]

The main use of NR is in automobiles. In developed countries nearly 60% of all rubber consumed is for automobile tyres and tubes. The superior heat build-up and tensile strength of NR makes it indispensable in the manufacture of aviation tyres. In heavy-duty tyres such as those for tractors and trucks, the major portion of the rubber used is NR. In addition to tyres, a modern automobile has more than 300 components made out of rubber. Many of these are processed from NR. NR is also widely used in the manufacture of hoses, footwear, battery boxes, foam mattresses, balloons, toys, etc. In addition to this, NR now finds extensive use in soil stabilization, in vibration absorption and in road construction. A variety of NR-based engineering products have been developed for use in these fields. Seismic isolators, bridge bearings and dock fenders are niche products relying on the superior properties of NR. [Pg.123]

Stanton, J.F., C.W. Roeder, T.I. Campbell. 1999. High Load Multi-Rotational Bridge Bearings, National Cooperative Highway Research Program Report 432, Transportation Research Board, National Research Coimcil, Washington, DC. [Pg.33]

Application of the seismic base isolation system has become a practical reality within the last 30 years with development of multilayer elastomeric bearings. Their development was an extension of the use of elastomeric bridge bearings and bearings for the vibration isolation of buildings (Naeim Kelly, 1999). [Pg.185]


See other pages where BRIDGE BEARING is mentioned: [Pg.289]    [Pg.248]    [Pg.273]    [Pg.7]    [Pg.180]    [Pg.85]    [Pg.77]    [Pg.289]    [Pg.60]    [Pg.432]    [Pg.303]    [Pg.495]    [Pg.29]    [Pg.312]    [Pg.313]    [Pg.402]    [Pg.488]    [Pg.243]    [Pg.1206]    [Pg.292]    [Pg.417]    [Pg.721]    [Pg.289]    [Pg.590]    [Pg.1]    [Pg.2]    [Pg.11]    [Pg.11]    [Pg.13]    [Pg.33]    [Pg.355]    [Pg.356]    [Pg.417]   
See also in sourсe #XX -- [ Pg.29 ]




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