In Sieve Analysis of Aggregates Lab Experiment- 1. What is the importance of sieve analysis of...
In Sieve Analysis of Aggregates Lab Experiment-
1. What is the importance of sieve analysis of aggregates?
2. Define and explain the significance of the following in concrete design mix:
a. Fine aggregates, b. Coarse aggregates, c. Grading, d. Fineness Modulus
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In Sieve Analysis of Aggregates Lab Experiment-
1. What is the importance of sieve analysis of...
1. Plot particle size distribution curve (You are supposed to fill the above table using MS...
1. Plot particle size distribution curve (You are supposed to fill the above table using MS Excel, therefore any error in the values will return zero point from the table). 2. Determine the fineness modulus of the sample and comment on what that means. 3. Based on the results of the sieve analysis, is the batch of aggregates suitable for making concrete? You are expected to go to the library to find out about grading requirements of aggregates. You can...
Question 1 (10 points). A sieve analysis was carried out on a sample of sand weighted...
Question 1 (10 points). A sieve analysis was carried out on a sample of sand weighted 1 kg the following results were obtained. Find MNS of the sample, fineness modulus and draw grading curve. Weight of retained (g) Sieve Opening (mm) 38 19 9.5 4.76 2.4 1.2 0.6 0.3 0.15 123 242 294 212 100
Problem 2. Combine the following aggregates to meet the given specifications: Sieve No. Specifications (Percent Passing...
Problem 2. Combine the following aggregates to meet the given specifications: Sieve No. Specifications (Percent Passing by Wt.) Crushed stone stockpiles (Percent Passing by Wt.) (mm) A B C D 25 100 100 19 90-100 79 12.5 18 100 9.5 60-75 6 68 4.75 45-55 4 25 100 2.36 29-39 3 7 95 1.18 2 4 60 100 0.60 10-20 1 2 41 95 0.30 1 2 31 66 0.15 1 1 22 39 0.075 3-7 1 1 15 30...
Problem 2. Combine the following aggregates to meet the given specifications: Sieve No. Specifications (Percent Passing...
Problem 2. Combine the following aggregates to meet the given specifications: Sieve No. Specifications (Percent Passing by Wt.) Crushed stone stockpiles (Percent Passing by Wt.) (mm) A B C D 25 100 100 19 90-100 79 12.5 18 100 9.5 60-75 6 68 4.75 45-55 4 25 100 2.36 29-39 3 7 95 1.18 2 4 60 100 0.60 10-20 1 2 41 95 0.30 1 2 31 66 0.15 1 1 22 39 0.075 3-7 1 1 15 30...
Compute the SSD mix proportions for the following mix design using the ACI method: Compressive Strength:...
Compute the SSD mix proportions for the following mix design using the ACI method: Compressive Strength: 3,000 psi Slump: 4 inches Non-Air Entrained Concrete The materials have the following properties: | Cement: Type I, specific gravity = 3.15 | Fine Aggregate: Bulk specific gravity = 2.68; fineness modulus = 2.40 Coarse Aggregate: Maximum size aggregate = 1 inch; bulk specific gravity = 2.68; Dry-rodded unit weight = 100 lbs/ft3
Please show which equations you use and describe in detail. 21. concrete mix design, Design the...
Please show which equations
you use and describe in detail.
21. concrete mix design, Design the concrete mix according to the following conditions: Design Environment Unreinforced slab, Bozeman, Montana (cold climate) Required design strength = 3500 psi Slab thickness = 12 in Statistical data indicate a standard deviation of compressive strength of 250 psi is expected (more than 30 samples). Only air entrainer is allowed Available materials Air entrainer: manufacture specification is 0.15 fl oz/1%/100 lb cement Coarse aggregate: 2...
Concrete is required for an interior building column in Burlington, VT. A specified compressive streng of...
Concrete is required for an interior building column in Burlington, VT. A specified compressive streng of 4,000 psi is required at 28 days. Information regarding reinforcing steel spacing and sizing willb provided in class. You have contacted the local concrete batch plant and found that they have th following materials ready Coarse Aggregates: 1 inch Nominal Maximum Size; Bulk Specific Gravity (oven-dry) 2.66; Dry- Fine Aggregates: Sand-Bulk Specific Gravity (oven-dry) = 2.64; Fineness Modulus (FM.)s 2.55; Rodded Unit Weight-102.3 lb/ft:...
Design a concrete mix in accordance with the B.R.E. method and calculate the quantity of each...
Design a concrete mix in accordance with the B.R.E. method and
calculate the quantity of each constituent material for trial mix.
The specification of the concrete mix is:
1. Design a concrete mix in accordance with the B.R.E. method and calculate the quantity of each constituent material for trial mix. The specification of the concrete mix is: • Characteristic strength at 28 days: 40 N/mm² • Standard deviation : 8 N/mm • Proportion defective : 5% • Cement type :...
3. Question Three a) State and explain Abram's law (also called the 'water-cement ratio' law) as...
3. Question Three a) State and explain Abram's law (also called the 'water-cement ratio' law) as a concept in civil engineering. Illustrate with the aid of the graph. (5 marks) b) What is gradation of aggregates and explain the importance of proper gradation in fresh concrete? (3 marks) c) Describe the types of shrinkages that concrete undergoes. (6 marks) d) Define concrete mix design and state its benefits. (3 marks) e) Explain the defects in timbers caused by conversion. (4...
Design the concrete mix according to the following conditions: Design Environment Pavement slab, Bozeman, Montana (cold...
Design the concrete mix according to the following conditions: Design Environment Pavement slab, Bozeman, Montana (cold climate) Required design strength = 3000 psi Slab thickness = 12 in. Statistical data indicate a standard deviation of compressive strength of 250 psi is expected (more than 30 samples). Only air entrainer is allowed. Available Materials Air entrainer: Manufacture specification is 0.15 fl oz/1% air/100 lb cement. Coarse aggregate: 2 in. nominal maximum size, crushed stone Bulk oven-dry specific gravity = 2.573, absorption...
1. Plot particle size distribution curve (You are supposed to fill the above table using MS Excel, therefore any error in the values will return zero point from the table). 2. Determine the fineness modulus of the sample and comment on what that means. 3. Based on the results of the sieve analysis, is the batch of aggregates suitable for making concrete? You are expected to go to the library to find out about grading requirements of aggregates. You can...
Question 1 (10 points). A sieve analysis was carried out on a sample of sand weighted 1 kg the following results were obtained. Find MNS of the sample, fineness modulus and draw grading curve. Weight of retained (g) Sieve Opening (mm) 38 19 9.5 4.76 2.4 1.2 0.6 0.3 0.15 123 242 294 212 100
Compute the SSD mix proportions for the following mix design using the ACI method: Compressive Strength: 3,000 psi Slump: 4 inches Non-Air Entrained Concrete The materials have the following properties: | Cement: Type I, specific gravity = 3.15 | Fine Aggregate: Bulk specific gravity = 2.68; fineness modulus = 2.40 Coarse Aggregate: Maximum size aggregate = 1 inch; bulk specific gravity = 2.68; Dry-rodded unit weight = 100 lbs/ft3
Please show which equations
you use and describe in detail.
21. concrete mix design, Design the concrete mix according to the following conditions: Design Environment Unreinforced slab, Bozeman, Montana (cold climate) Required design strength = 3500 psi Slab thickness = 12 in Statistical data indicate a standard deviation of compressive strength of 250 psi is expected (more than 30 samples). Only air entrainer is allowed Available materials Air entrainer: manufacture specification is 0.15 fl oz/1%/100 lb cement Coarse aggregate: 2...
Concrete is required for an interior building column in Burlington, VT. A specified compressive streng of 4,000 psi is required at 28 days. Information regarding reinforcing steel spacing and sizing willb provided in class. You have contacted the local concrete batch plant and found that they have th following materials ready Coarse Aggregates: 1 inch Nominal Maximum Size; Bulk Specific Gravity (oven-dry) 2.66; Dry- Fine Aggregates: Sand-Bulk Specific Gravity (oven-dry) = 2.64; Fineness Modulus (FM.)s 2.55; Rodded Unit Weight-102.3 lb/ft:...
Design a concrete mix in accordance with the B.R.E. method and
calculate the quantity of each constituent material for trial mix.
The specification of the concrete mix is:
1. Design a concrete mix in accordance with the B.R.E. method and calculate the quantity of each constituent material for trial mix. The specification of the concrete mix is: • Characteristic strength at 28 days: 40 N/mm² • Standard deviation : 8 N/mm • Proportion defective : 5% • Cement type :...
3. Question Three a) State and explain Abram's law (also called the 'water-cement ratio' law) as a concept in civil engineering. Illustrate with the aid of the graph. (5 marks) b) What is gradation of aggregates and explain the importance of proper gradation in fresh concrete? (3 marks) c) Describe the types of shrinkages that concrete undergoes. (6 marks) d) Define concrete mix design and state its benefits. (3 marks) e) Explain the defects in timbers caused by conversion. (4...
Design the concrete mix according to the following conditions: Design Environment Pavement slab, Bozeman, Montana (cold climate) Required design strength = 3000 psi Slab thickness = 12 in. Statistical data indicate a standard deviation of compressive strength of 250 psi is expected (more than 30 samples). Only air entrainer is allowed. Available Materials Air entrainer: Manufacture specification is 0.15 fl oz/1% air/100 lb cement. Coarse aggregate: 2 in. nominal maximum size, crushed stone Bulk oven-dry specific gravity = 2.573, absorption...
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