Name: Date: Course: Subject: Instructor: TEST # 1FINENESS OF CEMENTIS: 4031 (Part 1) - 1996I.OBJECTIVETo determine the fineness of cement by dry sieving as per IS: 4031 (Part 1) - 1996.II.PRINCIPLEThe fineness of cement is measured by sieving it through a standard sieve. The proportion ofcement, the grain sizes of which, is larger than the specified mesh size is thus determined.III.APPARATUSa.90µm IS Sieveb.Balance capable of weighing 100g to the nearest 10mgc.A nylon or pure bristle brush, preferably with 25 to 40mm bristle, for cleaning the sieveIV.PROCEDUREa.Weigh approximately 100g of cement to the nearest 0.01g and place it on the sieve.b.Agitate the sieve by swirling, planetary and linear movements, until no more finematerial passes through it.c.Weigh the residue and express its mass as a percentage R1, of the quantity firstplaced on the sieve to the nearest 0.1 percent.d.Gently brush all the fine material off the base of the sieve.e.Repeat the whole procedure using a fresh 100g sample to obtain R2. Then calculateR as the mean of R1 and R2 as a percentage, expressed to the nearest 0.1 percent.When the results differ by more than 1 percent absolute, carry out a third sieving andcalculate the mean of the three values.V.RESULT The percentage weigh of residue over the total sample is reported.% weight of residue=wt. of sample retained on the sieve Total weight of the sampleVI.LIMITSThe percentage residue should not exceed 10%Solution: Conclusion/Discussion:
Name: Date: Course: Subject: Instructor: TEST # 2SIEVE ANALYSIS OF COARSE AGGREGATESAASHTO T 27/ASTM C 136I.OBJECTIVEThis test method covers the determination of the particle size distribution of coarse aggregates by sievingII.PRINCIPLEThis test method is used primarily to determine the grading of materials proposed for use asaggregates or being used as aggregates. The results are used to determine compliance ofthe particle size distribution with applicable specification requirements and to providenecessary data for control of the production of various aggregate products and mixturescontaining aggregates. The data may also be useful in developing relationships concerningporosity and packing.III.APPARATUSa.A set of IS Sieves of sizes - 25mm, 20mm, 16mm, 12.5mm, 10mm, 6.3mm, 4.75mm.b.Balance or scale with an accuracy to measure 0.5 percent of the weight of the testsamplec.A nylon or pure bristle brush, preferably with 25 to 40mm bristle, for cleaning the sieved.Mechanical sieve shaker (optional)e.Oven of appropriate size capable of maintaining a uniform temperature of 110 +/- 5°C(230 +/- 9° F)IV.PROCEDUREa.Dry the sample to constant mass at a temperature of 110+/- 5°C (230 +/- 9°F).b.Weigh approximately 1000g of coarse aggregates to the nearest 0.1g and place it onthe sieve.c.The sample is sieved by using a set of IS Sieves.