t3501-f08-001 - CGN 3501C TEST NO 1 NAME THIS IS A...

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1 CGN 3501C TEST NO. 1 NAME _______________________ 9/24/08 THIS IS A CLOSED-BOOK TEST. THE USE OF A CALCULATOR WITH CAPABILITY FOR TEXT MEMORY IS NOT ALLOWED. 1. The density of a concrete is 142.5 lbm/ft 3 . Convert this density into SI unit. Please show your work clearly to receive credit. (5 pts.) 2. What are the three main functions of aggregate in concrete? What problems may we have if we make concrete using only Portland cement and water? (5 pts) 3 -8. For each of the following tests, describe (A) the purpose of the test, (B) how the test results are reported, (C) the meaning of the test results. (e.g. what does it mean to have a high value or low value?). (5 pts. each) 3. Aggregate Soundness Test. 4. Organic Impurity Test.
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2 5. Materials Finer than No. 200 Sieve Test. 6. Wagner Turbidimeter Test. 7. Autoclave Expansion Test on Cement. 8. Loss on Ignition Test.
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3 9. The results of a sieve analysis on a sand are given below. Calculate the fineness modulus of the sand. (10 pts.) Please show your work clearly to receive credits.
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t3501-f08-001 - CGN 3501C TEST NO 1 NAME THIS IS A...

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