Issue 43

M. Fakhri et alii, Frattura ed Integrità Strutturale, 43 (2018) 113-132; DOI: 10.3221/IGF-ESIS.43.09

Sieve Size (mm) Passing Percent 19 100 12.5 95 9 80 4.75 59 2.36 43 1.18 30 0.5 18 0.3 13 0.15 8 0.075 6 Table 1 : HMA Aggregate gradation.

Value

Test

Unit

Standard

PG 64 22

PG52 28

Penetration

mm/10 62

94 42

ASTM D5 ASTM D36 ASTM D113 ASTM D70 ASTM D92 ASTM D2170 ASTM D2170 ASTM D2170 ASTM D2042 ASTM D6

Softening Point

°C cm

49

Ductility

120 1.03 308 0.08 810 420 232 99.7

130 1.01 294 0.07 512 221 120 99.6

Specific Gravity

g/cm 3

Flash Point

°C

Loss on Heating Viscosity at 120°C Viscosity at 135°C Viscosity in 150°C Solubility in TCE

%

mm 2 /s mm 2 /s mm 2 /s

%

Penetration Index Shell Bitumen Handbook Table 2 : Specification of bitumen used for manufacturing HMA mixtures. - -1.12 -1.98

Specimen preparations The optimum percentage of bitumen was obtained by means of the Marshall Mix design method as presented in Tab. 3 for different aggregate types and binders.

Bitumen type

Aggregate type

PG 64-22

PG52-28

Silica Lime

5.2 % 4.8 %

5.0 %

4.6 % Table 3 : Optimum percentage of bitumen for manufacturing the HMA mixtures of this research.

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