Sample No.31. 40% London brick + 60% Gravel W/C Ratio 0.50 Observations

Cycles

Start

10

20

30

40

50

Length (*0.0l mm)

239

249

264

277

256

261

Weight (g):

11,769

11,774

11,777

11,778

11,777

11,778

R frequency (Hz):

4011

3523

3501

3483

3421.2

3391

Dyn. Mod. (N/mm’):

37,868

29,226

28,879

28,598

27,569

27,089

Reduction in dynamic modulus − 28.46% Increase in length = 0.044% (max 0.076%)

Sample No.32. 40% London brick + 60% Gravel W/C Ratio 0.385 Observations

Cycles

Start

10

20

30

40

50

Length(*0.0lmm):

265

274

287

299

287

293

Weight(g) :

11,817

11,821

11,824

11828

11,794

11,801

R frequency(Hz):

4003

3491

3427

3415

3402

3382

Dyn. Mod.(N/mm’ )

37,871

28,813

27,781

27,600

27,377

27,062

Reduction in dynamic modulus = 28.53% Increase in length = 0.056% (max 0.068%)