Construction Materials - Assignments - lab 2 PDF

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UNIVERSITY OF WOLLONGONGFACULTY OF ENGINEERINGCIVL245 CONSTRUCTION MATERIALSCONCRETE LABORATORYWeek 7 Wednesday 8th September 2010 Week 8 Wednesday 15th September 2010 Group 1 (Surnames A-D): 8:30 – 10:30 Group 3 (Surnames L-Q): 8:30 – 10: Group 2 (Surnames F-K): 10:30 – 12:30 Group 4 (Surnames R-W)...

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UNIVERSITY OF WOLLONGONG FACULTY OF ENGINEERING CIVL245 CONSTRUCTION MATERIALS

CONCRETE LABORATORY #1 Week 7 Wednesday 8th September 2010 Group 1 (Surnames A-D): 8:30 – 10:30 Group 2 (Surnames F-K): 10:30 – 12:30

Week 8 Wednesday 15th September 2010 Group 3 (Surnames L-Q): 8:30 – 10:30 Group 4 (Surnames R-W): 10:30 – 12:30

The groups allocated to each time slot will combine to carry out several workability and fresh concrete tests as specified below. You are required to batch concrete according to the following mix design: Cement (Type SL) 350 kg/m3 Coarse Sand 630 kg/m3 Fine Sand 120 kg/m3 Aggregate (20/14 mm blend) 660 kg/m3 Aggregate (10/7 mm blend) 380 kg/m3 Admixtures (recommended dose rate) (A) Batch and mix 50 litres of concrete. Add sufficient water to produce 80mm slump (make sure that you record the amount of water added to be able to calculate the water/cement ratio for your mix). (1) Carry out the following tests: slump; VeBe; compacting factor Make two 100 x 200 mm cylinders as per AS 1012.8 (compact by hand ramming). (B) To remaining concrete in mixer, add 125 mls superplasticiser (2) Carry out the following tests: slump; compacting factor; air-content; mass/unit volume Make two 100 x 200 mm cylinders, one 150 x 300 mm cylinder and one beam as per AS 1012.8 (compact by hand ramming) (C) To remaining concrete in mixer, add 30 mls air-entraining agent (3) Carry out the following tests: slump; air-content Make one 100 x 200 mm cylinder and one 150 x 300 mm cylinder as per AS 1012.8 (compact by hand ramming) Note: The material used for the air content test cannot be re-mixed and must be discarded. Make sure that you identify the cylinder and beam moulds so that each specimen can be correctly marked on stripping the moulds (following day). It is your responsibility to strip the moulds, identify the specimens and put them in the curing tank on the day after mixing. All specimens will be moist cured until testing.

CONCRETE LABORATORY #2 Week 10 Wednesday 6th October 2010 Group 1 (Surnames A-D): 8:30 – 10:30 Group 2 (Surnames F-K): 10:30 – 12:30

Week 11 Wednesday 13th October 2010 Group 3 (Surnames L-Q): 8:30 – 10:30 Group 4 (Surnames R-W): 10:30 – 12:30

In your second laboratory session, you will test the hardened concrete specimens. Tests to be carried out on the various specimens are: Non-destructive:

Pundit (ultrasonic); Schmidt hammer

Destructive:

compression (crushing 100 x 200 mm cylinders); indirect tension (Brazil – 150 x 300 mm cylinders); flexure (beam-4-point bend)

EACH STUDENT is to write and submit a report concerning all aspects of the laboratory demonstration procedures (Weeks 7/8 and Weeks 10/11 laboratory sessions). The results for the different tests with and without the admixtures should be highlighted and compared. Reference should be made to relevant Australian Standards. Note that attendance at the laboratory sessions is mandatory. No marks will be given for the written report if you did not attend both concrete laboratory sessions.

SITE VISIT (READYMIX BATCHING PLANT, UNANDERRA) Week 9 22nd September 2010 Groups 1-2 8:30 – 10:30 Groups 3-4 10:30 – 13:00 Groups are to meet (as indicated above) at the start of the allotted time at the Readymix Batching Plant, 4-6 Glastonbury Avenue, Unanderra (see map – exit the F6 at Five Islands Road, turn left and then turn right at the roundabout). The plant is located adjacent to the F6 Freeway about seven kilometres south of the University. Students are required to provide their own transport to the site, however any student who has difficulty in arranging transport should contact the Subject Coordinator prior to the day of the visit. This is a working plant and therefore, from an OH&S point of view, you must be appropriately dressed to go on site (enclosed footwear and long pants). You should bring writing materials to take notes as you are required to submit a report on the visit. Note that attendance at the site visit is mandatory. No marks will be given for the written report if you did not attend the site visit. You must have completed the Field Activity Participant Acknowledgement form to be eligible to attend the site visit.

REPORTS BOTH REPORTS (LABORATORY AND SITE VISIT) ARE TO BE SUBMITTED TO THE EEC, BUILDING 4 (UNDER SEPARATE COVER) BEFORE THE FOLLOWING TIMES: LABORATORY REPORT: SITE VISIT REPORT:

Dr Alex Remennikov and Eric Lume 8 September 2010

3.30pm Friday, 22 October 2010 (Week 12) 3.30pm Friday, 8 October 2010 (Week 10)...