Table 2 : Properties of radial side wall containing different parts per hundred rubber (phr) either reclaimed (RR) or crumb (CR).

Phr of reclaimed rubber (RR) or
crumb rubber (CR)
Tension property test Rebound
%
Specific gravity
g/ml
Hardness (SI unit) Oscillating disk cure meter test Mooney
scorch
(m.m)
300% Modulus (Kg/cm2*) Tensile
(Kg/cm2*)
Elongation % L min (dN.m)§ Tsc
(m.m)#
L max (dN.m) CR¤
(m.m)
zero 113 186 416 100.0 1.110 60.0 12.7 1.45 72.0 2.43 10.72
15 RR 107 184 423 93.3 1.105 59.0 13.5 1.48 70.3 2.48 10.57
20 RR 104 178 439 91.6 1.100 58.5 13.8 1.50 69.0 2.53 10.44
25 RR 101 174 447 89.7 1.095 58.0 14.3 1.55 67.7 2.58 10.34
30 RR 98 167 454 89.3 1.095 57.0 15.2 1.60 66.3 2.62 10.17
15 CR 105 175 431 99.2 1.105 59.0 14.0 1.47 69.8 2.50 10.29
20 CR 103 171 438 98.4 1.100 58.0 15.0 1.52 68.8 2.52 9.97
25 CR 101 166 448 97.9 1.098 57.0 15.8 1.55 67.5 2.55 9.83
30 CR 97 164 456 97.5 1.095 57.0 17.2 1.58 66.0 2.62 9.54
specifications 100-125 170-190 390-450 Not<70 1.088-1.118 57-63 10-16 1.3-1.7 67-77 2.25-2.85 7-13

*Kg/cm2:  Kilogram-force per square centimeter (pressure measurement unit)
§Minimum torque in deci-neuton per meter 
#Scorch Time in minute per minute
¤Cure Rate

Hussein et al.Journal of Environmental Engineering and Ecological Science  2014 3:5DOI : 10.7243/2050-1323-3-5