Construction Materials Laboratory Portfolio Assignment

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Reference no: EM132412411 , Length: word count:2000

Construction Materials Laboratory Portfolio Assignment -

1. Carbon content of steel

Based on your laboratory test results and further reading:

1) Plot the stress-strain graph for the three metals.

2) Define the ultimate, yield and fatigue stress levels for the three metals.

3) Define the Young's modulus for the three metals.

4) Plot the variation of yield and tensile strength with carbon content.

5) Plot the variation of ductility with carbon content.

2. Making Concrete

1) Does the methodology used in the laboratory for the slump test comply with BS EN 12350-2:2019 Testing fresh concrete Part 2: Slump-test?

2) Do the concrete cube moulds comply with EN 12390-1:2012 Testing hardened concrete Part 1: Shape, dimensions and other requirements for specimens and moulds?

3) Does the methodology used in the laboratory for preparing the concrete cure comply with BS EN 12390-2:2019 Testing hardened concrete Part 2: Making and curing specimens for strength testing?

Comment on meaningful deviations from the standard method and how this may affect the result.

3. Aggregates

Provide hand drawn sketches (scanned in) of aggregate grading curves for gap graded, well graded and poorly graded aggregate based on your experimental data. Which describes the aggregates tested the most closely?

4. Steel reinforcement

1) Using BS 4449:2005+A3:2016 answer the following questions:

Is the equivalent diameter within 8% of the nominal diameter? YES / NO

Is the 'mass per metre' within the range specified by table 7 and Clause 7.3.2? YES / NO

Are the yield strength, stress ratio and total elongation at maximum force above the specified value in table 4? YES / NO

2) The subgrades A, B, and C in Grade 500 can be identified by the rib pattern. These are illustrated in Figures 2-4 (Clause 10.2). Grade 250 bars are plain. Why are ribs required for bars with a higher yield stress?

5. Timber

1) Which specimen had the highest strength to weight ratio?

2) Which specimen had the lowest strength to weight ratio?

3) What was the average strength to weight ratio?

4) A prefabricated disaster relief shelter is being designed. It will be made of timber, or a timber product. Propose a timber or timber based product for the shelter and support your proposal by the laboratory test results and any other sources of information. Highlight three advantages and three disadvantages of the proposed timber product.

Attachment:- Assignment Files.rar

Reference no: EM132412411

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