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CTL I THOMPSON <br /> Chemical and Physical Analysis of Natural Pozzolan <br /> Developed For: CR Minerals <br /> 3345 Lime Rd. <br /> Pueblo, CO 81004 <br /> CTL Ticket: 20070 Source: NP Sample Date Range: <br /> CTL Project: 16735 Sample ID: Tephra NP to: <br /> Report Date: 0611112020 Docket: April 2020- Date Received: 0410312020 <br /> Chemical Composition M ASTM C618-19 <br /> (by Wyoming Analytical Laboratories, Inc.) Class N <br /> Total Silica, Aluminum, Iron: 85.5 70.0 Min <br /> Silicon Dioxide: 71.5 <br /> Aluminum Oxide: 13.3 <br /> Iron Oxide: 0.6 <br /> Sulfur Trioxide: 0.0 4.0 Max <br /> Calcium Oxide: 0.7 <br /> Moisture Content: 0.7 3.0 Max <br /> Loss on Ignition: 5.2 10.0 Max <br /> AASHTO M295-11 Specifications <br /> Available Alkalies (as Na20): 0.9 1.5 Max <br /> Sodium Oxide: 0.59 <br /> Potassium Oxide: 0.50 <br /> Physical Test Results ASTM C618-19 <br /> Class N <br /> Fineness, Retained on #325 Sieve (%): 1.9 34 Max <br /> Strength Activity Index (%) <br /> Ratio to Control @ 7 Days: 88.5 <br /> Ratio to Control @ 28 Days: 98.0 75 Min <br /> Water Requirement, %of Control: 99.1 115 Max <br /> Soundness, Autoclave Expansion (%): 0.03 0.8 Max low <br /> Drying Shrinkage, Increase @ 28 Days (%): 0.01 0.03 <br /> Density Mg/m3: 2.34 <br /> Comments: Meets ASTM C618-19 Class N(CTLI7) Meets AASHTO M295-11 (15) Spwp4r <br /> kokie) <br /> • <br /> CTL Thompson Materials Engineers, Inc. V6/1114 <br /> O /2400 :v <br /> see <br /> Orville R. Werner II, P.E. iin�MA`"E �V <br /> 22 Lipan Street I Denver, Colorado 80223 1 Telephone: 303-825-0777 Fax: 303-893-1568 <br /> This test report relates only to the items tested and shall not be reproduced,except in full,without written approval of CTL Thompson,Inc. <br />