Please show full steps correctly and handwritten thankss 2-Design a concrete mix knowing that:- Cement content =- w/c ratio- Sand content6 bags/m³=0.53=40% of all-in aggregate- Specific gravity of sand & coarse aggregate =- Bulk density of sand & coarse aggregate =- Admixture dosage- Density of admixture- Air content2.6 & 2.65 respectively1650 kg/m³0.5% of cement weight==1.2 kg/lit=3%

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Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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In proportioning a concrete mix, the coarse and fine aggregates had the following properties respectively; Coarse: Dry weight: 800lb, 3,2% MC, 2.0% AC, Fine: Dry weight 350 lb, 1.2% MC, 2.9% AC. How much should the water be adjusted to account for the agregate moisture?
Design a concrete mix for the following performances and ingredients:• Compressive strength at 28 days = 32 MPa, slump 80 mm• Crushed coarse aggregate of max size 20 mm readily available• Fine aggregate is river sand, fineness modulus = 2.5• Specific gravity of combined aggregate =2.6• Water absorption of fine aggregate = 0.5%• Water absorption of coarse aggregate = 0.8%• Air-dry moisture content of coarse aggregate = 0.2%• Air-dry moisture content of fine aggregate = 0.4%
Design the concrete mix according to the following conditions:Design EnvironmentBuilding frameRequired design strength = 27.6 MPaMinimum dimension = 150 mmMinimum space between rebar = 40 mmMinimum cover over rebar = 40 mmStatistical data indicate a standard deviation of compressive strength of2.1 MPa is expected (more than 30 samples).Only air entrainer is allowed.Available MaterialsAir entrainer: Manufacture specification 6.3 mL/1% air/100 kg cement.Coarse aggregate: 19 mm nominal maximum size, river gravel (rounded)Bulk oven-dry specific gravity = 2.55, absorption = 3.6,Oven-dry rodded density = 1761 kg/m3Moisture content = 2.5,Fine aggregate: Natural sandBulk oven-dry specific gravity = 2.659, absorption = 0.5,Moisture content = 2,Fineness modulus = 2.47
Compute for the corrected amount of water needed in the concrete mix if the mass of fine and coarse aggregates are 650 kg and 780 kg, and both have an absorption of 1.5% and 2% respectively. Water/cement ratio is 0.50 and the mass of cement is 260kg.
A concrete mix with a 75 mm slump, w/c ratio of 0.50, and sand with a fineness modulus of 2.4 contains 1009 kg/m3of coarse aggregate. Compute the required mass of coarse aggregate per cubic meter. To adjust the mix so as to increase the compressive strength, the water–cement ratio is reduced to 0.45. Will the quantity of coarse aggregate increase, decrease, or stay the same? Explain your answer.
The design of a concrete mix requires 1173 kg/m3of gravel in dry condition,582 kg/m3of sand in dry condition, and 157 kg/m3of free water. The gravelavailable at the job site has a moisture content of 0.8% and absorption of1.5%, and the available sand has a moisture content of 1.1% and absorptionof 1.3%. What are the masses of gravel, sand, and water per cubic meter thatshould be used at the job site?
A concrete mix with a 75 mm slump, w/c ratio of 0.50, and sand with a fine-ness modulus of 2.4 contains 1009 kg/m3 of coarse aggregate. Compute therequired mass of coarse aggregate per cubic meter. To adjust the mix so as toincrease the compressive strength, the water–cement ratio is reduced to 0.45.Will the quantity of coarse aggregate increase, decrease, or stay the same?Explain your answer.
The design of a concrete mix requires 1173 kg/m3 of gravel in dry condition, 582 kg/m3 of sand in dry condition, and 157 kg/m3 of free water. The gravel available at the job site has a moisture content of 0.8% and absorption of 1.5% and the available sand has a moisture content of 1.1% and absorption of 1.3%. What are the masses of gravel, sand and water cubic meter that should be used at the job site?
The volume of concrete required for a certain project is 20m^3. The density of concrete is 2400kg/m^3. Concrete is composed of fine and coarse aggregates, water, and cementitious materials: cement and fly ash. The ratio of fine and coarse aggregates is 2:1. Water-to-cement ratio is 0.40. Percentage of the fly ash to the total cementitious material is 0.30. Total aggregate-to-cement ratio is 5:1. Density of fine aggregates is 2680kg/m^3. Density of coarse aggregate is 2500kg/m^3. Density of water is 1000kg/m^3. Density of cement is 3150kg/m^3. Density of fly ash is 1300kg/m^3. Determine the weight required for each component. All ratios use weights. Round off your answers to the nearest tenth of a kilogram. Have one significant figure after the decimal point. Find: Weight of Fine Aggregates: Weight of Coarse Aggregates: Weight of Water: Weight of Cement: Weight of Fly Ash:
: Prepare mix design for given data • The 28-day compressive strength should be 5000 psi, The slump should 2 inch and the maximum aggregate size should not exceed one inch ( 3/4 inch). The properties of the materials are as follows: • Cement : Type I, specific gravity = 3.15 • Coarse Aggregate: Bulk specific gravity= 2.70; absorption capacity = 0.5%; dry-rodded unit weight = 1500 kg/m3, surface moisture = 1.2 % • Fine Aggregate: Bulk specific gravity= 2.80 ; absorption capacity = 1.1%; fineness modulus = 2.80; surface moisture = 3*C.No/90 %
Read the question carefully and give me right solution according to the question. If you don't know the solution please leave it but don't give me wrong solution. Dry weight of coarse aggregate, fine aggregate and water for 1 m3 of one type of concrete requires 1100 kg, 680 kg and 175 liters, respectively. From laboratory test for, it is determined that absorption content of coarse and fine aggregates is 0.5% and 1.25%, respectively. Meanwhile, moisture content of coarse and fine aggregate is 0.75% and 1.0%, respectively. Determine weight of coarse aggregate, fine aggregate and water for one batch with volume of mixer of 800 liter.
You are working on a concrete mix design that requires each cubic meter of concreteto have 0.40 water–cement ratio, 1165 kg/m3 of dry gravel, 4% air content, and 335kg/m3 of cement (Specific Gravity = 3.15). The available gravel has a specific gravityof (S.G) gravel = 2.7, a moisture content of 1.6%, and absorption of 2.4%. The availablesand has a specific gravity of (S.G) sand = 2.5, a moisture content of 4.8%, andabsorption of 1.5%.For each cubic meter of concrete needed on the job, calculate the mass of cement,moist gravel, moist sand, and water that should be added to the batch. Summarizethe total the mix design in a table.

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