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LABORATORY TEST REPORT <br /> We TeST POTENTIAL ALKALI REACTIVITY OF AGGREGATES <br /> (MORTAR-BAR METHOD) <br /> 627 Sheridan Boulevard•Lakewood,CO 80214 ASTM C 1260 <br /> 303.975.9959•office@westest.net <br /> REPORT DATE: November 12, 2016 <br /> CLIENT: BURNCO Colorado <br /> PROJECT NO.: 623118 SAMPLE DATE: October 8, 2018 <br /> SAMPLE ID: 6231 D <br /> AGGREGATE: <br /> SOURCE: Firestone Pit <br /> SIZE: ASTM &AASHTO Fine Aggregate <br /> COMMENTS: Aggregate graded as per Section 8.2, Table 1 <br /> CEMENT: <br /> SOURCE: Holcim <br /> TYPE: 1/II <br /> AUTOCLAVE EXPANSION: 0.00% <br /> ALKALIS CONTENT: 0.56% <br /> COMMENTS: Cement data provided by Holcim <br /> MIX WATER: <br /> W/C RATIO: 0.47 <br /> EFFECTIVE GAUGE LENGTH=250 mm <br /> 10/25/18 10/26/18 10/30/18 11/2/18 11/6/18 11/9118 <br /> Initial Zero 4 Days 7 Days 11 Days 14 Days <br /> Specimen Comparator Comparator Comparator Length Comparator Length Comparator Length Comparator Length <br /> Reading Reading Reading Change Reading Change Reading Change Reading Change <br /> A 2.070 2.216 2.224 0.00% 2.272 0.02% 2.272 0.02% 2.320 0.04% <br /> B 1.998 2.148 2.150 0.00% 2.204 0.02% 2.204 0.02% 2.246 0.04% <br /> C -1.046 -0.900 -0.894 0.00% -0.844 0.02% 1 -0.838 0.02% 1 -0.800 0.04% <br /> AVERAGE 1.155 1.160 0.00% 1.211 0.02% 1.213 0.02% 1 1.255 0.04% <br /> MORTAR BAR EXPANSION <br /> 0.60% <br /> W 0.50% <br /> z <br /> a <br /> U 0.40% <br /> 2 <br /> 0.30% <br /> z <br /> W <br /> J <br /> W 0.20% <br /> c� <br /> W 0.10% <br /> > <br /> a <br /> 0.00% <br /> 0 2 4 6 8 10 12 14 <br /> DAYS IN SOLUTION <br /> FIGURE 1 <br />