Table 4 Roughness of different types of BS.

From: Investigation of the shear performance of multi-key block bonding surfaces without connecting reinforcement for precast elements

Type of BS

Volume (ML)

Roughness (ML)

Sample 1

Sample 2

Sample 3

Average value

M1

185

205

195

196

3.06

M2

202

221

212

212

3.31

M3

282.5

232.5

290

268

4.19

W

280

240

267

262

4.09

PSP

15

20

23

19

0.3

CJ

130

145

137.5

137.5

2.15

T

201.5

184

208.5

198

3.09

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