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Sand is specially graded natural silica sand graded to retain 98% on a No. 100 (150µ) sieve, 75% on a No. 50 (300µ) 30% on a No. 40 (425µ) and 2% on a No. 30 (600µ). Specific gravity is 2.65. Packed in 50 lbs. (22.7kg) bags or boxes.
Fastest and most accurate concrete surface resistivity meter available
Used to determine initial and final set times of cements and mortar
Uses accelerated means of estimating delayed expansion of Portland cement caused by hydration of CaO and MgO
Calorimeter with durable, highly-accurate Digital Thermometer
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