| CCRL Proficiency Sample Program | |||||||||
| CCRL Masonry Cement Proficiency Sample Nos. 51 & 52 | |||||||||
| Report Date: November 14, 2003 | |||||||||
| Sample: 51 | Sample: 52 | ||||||||
| TEST TITLE | UNIT | # of Labs | Average | S.D. | C.V. | Average | S.D. | C.V. | |
| N. C. Water | % | 69 | 24.1 | 0.5 | 2.2 | 25.8 | 0.5 | 1.9 | |
| Gillmore TS Initial | min | 66 | 147 | 26 | 17 | 158 | 28 | 18 | |
| Gillmore TS Final | min | 66 | 254 | 42 | 16 | 265 | 40 | 15 | |
| Autoclave Expansion | % | 65 | 0.02 | 0.01 | 72.37 | 0.00 | 0.01 | 428.75 | |
| Air Content | % | 68 | 17.5 | 0.9 | 5.1 | 17.3 | 0.9 | 5.1 | |
| AC Mix Water | % | 69 | 48.5 | 1.5 | 3.1 | 47.5 | 1.3 | 2.6 | |
| AC Flow | % | 69 | 109 | 2 | 2 | 111 | 3 | 2 | |
| Compressive Strength 7-Day | psi | 69 | 1643 | 191 | 12 | 1720 | 194 | 11 | |
| Compressive Strength 28-Day | psi | 59 | 1942 | 189 | 10 | 2151 | 213 | 10 | |
| 45µm (No. 325) Sieve | % | 68 | 14.49 | 1.60 | 11.02 | 1.80 | 0.38 | 21.32 | |
| Density | g/cm3 | 57 | 2.93 | 0.04 | 1.30 | 2.90 | 0.04 | 1.53 | |
| Mixing Water (WR) | % | 61 | 48.6 | 1.3 | 2.7 | 47.5 | 1.2 | 2.6 | |
| Initial Flow (WR) | % | 62 | 110 | 2 | 2 | 111 | 2 | 2 | |
| Final Flow (WR) | % | 62 | 95 | 5 | 6 | 95 | 6 | 6 | |
| Water Retention | % | 62 | 86 | 4 | 5 | 85 | 5 | 6 | |