mortar.docx

# 07cmx707cmx707cm of 13 proportion by using standard

• Lab Report
• 13

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dimension(7.07cmx7.07cmx7.07cm) of 1:3 proportion, by using standard sand as specified by IS:650 as fine aggregate, tested under compression (Grade of cement indicates their compressive 3 strength at the end of 28 days of curing).see figure(I).

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Figure (I): Compressive Strength Test Set . This is the formula was used to calculate the compressive strength for cement: Stress=P/A P= Applied load A= Surface area 1.3 Hypothesis:- We predict that the compression of concrete is high than the tension of concrete. 4 2. Equipment’s and Materials:
Part 1 : (Compressive Strength) 1. Cement. 2. Water. 3. Sand. 4. Cube mould of size 7.07x 7.07 x 7.07cm with base plates. 5. Balance. 6. Motored cube vibration machine. 7. Timer. 8. Trowel. 9. Laboratory oil. 10. Water container to submerge the samples in. 11. Soft brush. Part 2 : (Tensile Strength) 1. Cement, water and sand. 2. Balance 3. Trowel and tray. 4. Mold as a bone shape. 5. Laboratory oil 6. Water container to submerge the samples in. 7. Steel rod (stick). 5

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Fig.1 Fig. 2 Fig.3 Fig 7 Fig 8 Fig 4 Fig 5 Fig 6
6 3. Procedure: Part 1 : (Compressive Strength): Required in the sand that passes assembly at 0.85mm sieve and kept at 0.6mm sieve. 1. A one hundred eighty-five cement were weighted and five hundred fifty-five sand were weighted. 2. Then sand was mixed with cement for one minute. 3. A seventy four ml of water was added to the mixture, and they were mixed by trowel for 4 minutes. 4. A 7.07x 7.07 x 7.07cm cube was painted with a thin layer of oil. 5. The cube was placed on the table of the vibration machine, and firmly held in position by means of suitable clamps. 6. Then the cube was filled by the paste, and then they were compacted by vibrations for period of about 2 minutes. 7. At the end of vibration, the mold was removed together with the base plate from the machine, and the top surface of cube in the mold was smoothing by the trowel. 8. Repeat the same procedure make three cubes of paste. 9. Then they were kept in open air for one day, the cubes were taken out of the molds carefully and then they were sunk in a water basin for seven days.

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10. Then the cubes were taken out from the basin, and the cubes were dried with paper, and weighed 7 And the more two smooth surface were placed on the platform of compression testing machine.
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• Fall '16
• Civil Engineering, Tensile strength, Compressive stress, Tensile stress, Compressive strength

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