Lap report about Concrete Mix Design and Torsion Test ( I have the data, I just need a research )

nnys3
timer Asked: Apr 28th, 2017

Question Description

It's a Civil Engineering lab, its due in 30 hours from now

We were assigned to make one Concrete sample in a certain shape, ( you can see it in the attached pictures )

and then, we had to test three Concrete samples , using the Torsion Test method.

- The results of the test is attached in the pictures of each simple

we used to make one Concrete : Gravel 91 lb , Water 18.6 lb , Sand 70 lb , cement 35 lb

**make sure that**

You Read about every thing before you start the work, from making Concrete, the materials, to the Torsion test.

write at least 3 pages

write the procedure of making Concrete and treasure test

once you are done with writing, just attach the test results in the report in an appropriate place

____ I have more pictures to add ___

Unformatted Attachment Preview

Homework Search Results X s College of Engi x Bb Course Materia x 19. Microsoft Word X CEGR 212 SYL X New chat mess X 28 (28) WhatsApp X 8 Secure https://morgan.blackboard.com/bbcswebdav/pid-1945820-dt-content-rid-5735488_1/courses/17227.201730/CEGR%20212%20LAB%20MANUAL%2... a : Microsoft Word - CEGR 212 LAB FALL 2016 new 54 / 57 Experiment 7: Torsion Test Data Sheet Name: Date: ---------------- Instructor Initials: 1- Measure the dimensions of the specimens with micrometer or calipers before testing. Record measurement on the drawing below: Twist angle d TL L 0 = where J = Ted* JG 32 2- Tabulate your experimental results with the anticipated values. Angle Torque (in-Ib) + 1 2 3 4 Homework Search Results x s College of Engi x Bb Course Materia x Microsoft Word x CEGR 212 SYL X 6 Work Fast Х 28 (28) WhatsApp x 8 Secure https://morgan.blackboard.com/bbcswebdav/pid-1945820-dt-content-rid-5735488_1/courses/17227.201730/CEGR%20212%20LAB%20MANUAL%2... a : Microsoft Word - CEGR 212 LAB FALL 2016 new 54 / 57 Twistangle d TL L 0 = where J = nd“ JG 32 2- Tabulate your experimental results with the anticipated values. Angle Torque (in-lb) 1 2 3 4 5 6 7 8 9 10 + Homework Search Results X s College of Engi x Bb Course Materia x Microsoft Word X CEGR 212 SYL X 6 Work Fast Х 23 (28) WhatsApp x 8 Secure https://morgan.blackboard.com/bbcswebdav/pid-1945820-dt-content-rid-5735488_1/courses/17227.201730/CEGR%20212%20LAB%20MANUAL%2... : Lab 7: Concrete Mix Design Objective Design a concrete mix for an underwater storage tank that is likely to be exposed to harsh chemicals and seawater. The specified compressive strength needed at 28 days is fc = 4000 psi. The design calls for a minimum of 3 in. of concrete cover over the reinforcing steel. The minimum distance between reinforcing bars is 4 in. The only admixtures allowed are for air entrainment (Micro Air) and water reducer. No statistical data on previous mixes are available. Schedule: Sep 8, 2015 In-class mix design exercise (LAB-1) At the end of the exercise, each individual should give me a calculation sheet with final quantities as in Figure 9.8 of the handout. Students will be responsible for casting 12 cylinders (standard cylinders 4 inch diameter x 8 inch height), which will be tested at 7 and 28 days Sep. 22, 2015 Sep. 29, 2015 7-day tests (4 cylinders) Oct. 20, 2015 LAB-2:28-day tests (8 cylinders) Assumptions: Fine aggregate to be 'All purpose sand' with following properties: Fineness Modulus 2.6 Specific Gravity 2.65 Moisture content 3% SSD* moisture content 0.7% Coarse Aggregate to be crushed stone (angular aggregate, not gravel) nominal size 3/8 inch bulk density 100 lb/ft Moisture content 2% SSD* moisture content 0.5% Homework Search Results X s College of Eng X Bb Course Materia X 1 Microsoft Word x 6 CEGR 212 SYL X New chat mess X 23 (28) WhatsApp x 8 Secure https://morgan.blackboard.com/bbcswebdav/pid-1945820-dt-content-rid-5735488_1/courses/17227.201730/CEGR%20212%20LAB%20MANUAL%2... : DOD TIIU ISTUI VULETIL U. 770 Coarse Aggregate to be crushed stone (angular aggregate, not gravel) nominal size 3/8 inch bulk density 100 lb/ft Moisture content 2% SSD* moisture content 0.5% Use Type I Portland cement. Specific Gravity 3.15 Use air entrainment admixture (Micro-Air) according to manufacturer's label. This will be added on the day of the concrete mixing and no adjustment for this is required at the time of mix design. Use HR WR according to Manufacturer's label. This will be added on the day of the concrete mixing and no adjustment for this is required at the time of mix design. Target slump 3-4 inches * SSD (Surface Saturated Dry) The moisture content in aggregates (sand and rock) that is surface absorbed and therefore not part of the mixing water. 55 ABSOLUTE VOLUME METHOD Since there is no statistical data about test cylinders, the target design strength should be according to Table 9-11 The water cement ratio should be determined according guidelines in tables 9.1 and 9.3 Coarse aggregate size must be less than 1/5 of member size or 4 of clear spacing between reinforcement bars Homework Search Results X s College of Engi x Bb Course Materia X 19 Microsoft Word X CEGR 212 SYL X 6. Work Fast Х 23 (28) WhatsApp x 8 Secure https://morgan.blackboard.com/bbcswebdav/pid-1945820-dt-content-rid-5735488_1/courses/17227.201730/CEGR%20212%20LAB%20MANUAL%2... : Coarse aggregate size must be less than 1/5 of member size or 4 of clear spacing between reinforcement bars Target air content according to Table 9.5 Water Content according to Table 9.5 Cement content based on maximum water cement ratio and water content Coarse aggregate content according to Fig. 9.3 or table 9.4 Fine Aggregate content calculated based on volumes of all components to add up to 1 cubic yd Modifications to the added water quantity should be based on specified moisture content for aggregates. Total volume of concrete to be poured (12 cylinders + 1 slump cone + 15% waste), V = ft" For 1 yd concrete Volume Weight (lb) For test batch (V ft) Volume Weight (lb) Cement Water Sand Rock Air TOTAL Unit Weight of concrete = lb/ft Reference:
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