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5. A sample of aggregate has a moisture content of 10 percent. Its absorption capacity is...
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...
Problem 2 Samples of coarse aggregate (CA) are collected at a stockpile and submitted for lab testing to determine their specific gravities. Tests were completed in accordance with ASTM C127-12 a...
Problem 2 Samples of coarse aggregate (CA) are collected at a stockpile and submitted for lab testing to determine their specific gravities. Tests were completed in accordance with ASTM C127-12 and the following masses are found: Mass Property 6,296 6,214 4,293 Mass of moist aggregate sample as submitted: Mass of oven-dried aggregate: Mass of aggregates submerged in water: Mass of SSD (Saturated Surface Dry) aggregate: 6,227 Using this data find the following: a) Aggregate bulk dry specific gravity b) Aggregate...
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...
Problem with different moisture conditions: 5. Calculate the quantities of cement, water, fine ag...
Problem with different moisture conditions: 5. Calculate the quantities of cement, water, fine aggregate, and coarse aggregate per trial mix of 1 m3 for the following specifications. Target mean compressive strength-30 MPa at 7 days; Cement strength class 42.5; Slump required 100 mm; Max. Aggregate size 20 mm; specific gravity of aggregates 2.65% Coarse aggregate UNCRUSHED (10, 20mm), fine aggregate CRUSHED (50% pass 600 micros); Maximum allowable free- water/cement ratio 0.40; Minimum allowable cement content 275 kg/m3; Absorption of fine...
Q1// Use the ACI method to design a concrete mix which is required to obtain f'c28=...
Q1// Use the ACI method to design a concrete mix which is required to obtain f'c28= 34.5MPa and a slump of 75mm. the fineness modulus of the aggregate is 3.0, the bulk density of coarse aggregate is 1600 kg/m' and the maximum size is 25. Both the specific gravity of fine and coarse aggregate are 2.68. neglect the absorption and total moisture content.
Hi, can you help me do this problem, i know its a little bit long but...
Hi, can you help me do this problem, i know its a little bit
long but i really need to know how to answer it and know the
answer
thank you
Problem 2 Concrete Mix Design. (30 points) You are planning to place concrete for a roof slab in a 3 story light commercial building located in Boston, MA (cold climate). Develop the mix proportion for this concrete. Explain your selections. Design Criteria: 290 Design strength-3.700 psi Statistical data based...
2. Determine the following parameters for both the coarse and fine aggregate samples (separately) based on...
2. Determine the following parameters for both the coarse and fine aggregate samples (separately) based on the data provided in the following table: (a) (b) absorption capacity moisture content apparent specific gravity bulk specific gravity (oven dry) bulk specific gravity (SSD) Aggregate Wop (g) Wsub (g) Wpye+wi (g) Wpyetagg-w2 (g) WStock (g) 5302 CA Wssp (g) 5226 501 5220 496 3294 I FA 515 622 938
use (absolute volume method). Calculate the materials (type II cement, coarse aggregate, fine aggregate, and water)...
use (absolute volume method). Calculate the materials (type II cement, coarse aggregate, fine aggregate, and water) needed to make 16 concrete cylinders (diameter = 4", height = 8") for our compression tests. Specified compressive strength = 3000 psi at 28 days. For coarse aggregate, please choose 3/4 in max size gravel containing some crushed particles with the following assumptions: oven-dry specific gravity of 2.68; oven-dry rodded unit weight: 100 lb per cu. ft; moisture content: 1%.
Question 1. A concrete mix is to be designed for use in a 250 mm thick road pavement. The desired properties are pr...
Question 1. A concrete mix is to be designed for use in a 250 mm thick road pavement. The desired properties are provided below. Use the ACI method to calculate the required amounts per unit volume (/1m) of water, cement, course aggregate and fine aggregate. Slump 25 mm Average 28-day flexural strength of at least 4.5 MPa Coarse aggregate: nominal maximum size = 37.5 mm, dry-rodded weight 1600 kg/m3, specific gravity 2.68, moisture content 1.0 percent, absorption 0.5 percent Fine...
The following requirements are specified for concrete construction of a reinforced concrete jetty exposed to sea...
The following requirements are specified for concrete construction of a reinforced concrete jetty exposed to sea water and moderate freeze and thaw environment Required Design Strength, fc Slump required Standard deviation Cement 35 MPa 25-75 mnm 4.8 MPa Ordinary portland cement with relative density 3.15 Fine Aggregate (Natural Sand) Oven-dry relative densitv SSD moisture content Moisture content of sample Fineness Modulus 2.3 0.2 % 4.3 % 2.63 Coarse aggregate (crushed stone) Nominal maximum aggregate size Oven-dry relative density SSD moisture...
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...
Problem 2 Samples of coarse aggregate (CA) are collected at a stockpile and submitted for lab testing to determine their specific gravities. Tests were completed in accordance with ASTM C127-12 and the following masses are found: Mass Property 6,296 6,214 4,293 Mass of moist aggregate sample as submitted: Mass of oven-dried aggregate: Mass of aggregates submerged in water: Mass of SSD (Saturated Surface Dry) aggregate: 6,227 Using this data find the following: a) Aggregate bulk dry specific gravity b) Aggregate...
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...
Problem with different moisture conditions: 5. Calculate the quantities of cement, water, fine aggregate, and coarse aggregate per trial mix of 1 m3 for the following specifications. Target mean compressive strength-30 MPa at 7 days; Cement strength class 42.5; Slump required 100 mm; Max. Aggregate size 20 mm; specific gravity of aggregates 2.65% Coarse aggregate UNCRUSHED (10, 20mm), fine aggregate CRUSHED (50% pass 600 micros); Maximum allowable free- water/cement ratio 0.40; Minimum allowable cement content 275 kg/m3; Absorption of fine...
Q1// Use the ACI method to design a concrete mix which is required to obtain f'c28= 34.5MPa and a slump of 75mm. the fineness modulus of the aggregate is 3.0, the bulk density of coarse aggregate is 1600 kg/m' and the maximum size is 25. Both the specific gravity of fine and coarse aggregate are 2.68. neglect the absorption and total moisture content.
Hi, can you help me do this problem, i know its a little bit
long but i really need to know how to answer it and know the
answer
thank you
Problem 2 Concrete Mix Design. (30 points) You are planning to place concrete for a roof slab in a 3 story light commercial building located in Boston, MA (cold climate). Develop the mix proportion for this concrete. Explain your selections. Design Criteria: 290 Design strength-3.700 psi Statistical data based...
2. Determine the following parameters for both the coarse and fine aggregate samples (separately) based on the data provided in the following table: (a) (b) absorption capacity moisture content apparent specific gravity bulk specific gravity (oven dry) bulk specific gravity (SSD) Aggregate Wop (g) Wsub (g) Wpye+wi (g) Wpyetagg-w2 (g) WStock (g) 5302 CA Wssp (g) 5226 501 5220 496 3294 I FA 515 622 938
Question 1. A concrete mix is to be designed for use in a 250 mm thick road pavement. The desired properties are provided below. Use the ACI method to calculate the required amounts per unit volume (/1m) of water, cement, course aggregate and fine aggregate. Slump 25 mm Average 28-day flexural strength of at least 4.5 MPa Coarse aggregate: nominal maximum size = 37.5 mm, dry-rodded weight 1600 kg/m3, specific gravity 2.68, moisture content 1.0 percent, absorption 0.5 percent Fine...
The following requirements are specified for concrete construction of a reinforced concrete jetty exposed to sea water and moderate freeze and thaw environment Required Design Strength, fc Slump required Standard deviation Cement 35 MPa 25-75 mnm 4.8 MPa Ordinary portland cement with relative density 3.15 Fine Aggregate (Natural Sand) Oven-dry relative densitv SSD moisture content Moisture content of sample Fineness Modulus 2.3 0.2 % 4.3 % 2.63 Coarse aggregate (crushed stone) Nominal maximum aggregate size Oven-dry relative density SSD moisture...
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