Design a concrete mix for the following conditions and constraints using theAbsolute Volume Method. The material description are as follows:I. Design EnvironmentRetaining Wall exposed to moderate sulfate exposureii.Required Design Compressive Strength =27.6 MPaii.Standard Deviation of Compressive Strength of 1.8 MPa is expected(25 sample only)iv. Minimum dimension200 mmv.Minimum space between re-bars50 mm= 50 mmvi.vii. Maximum Slump is requiredviii. Only air entrained is allowedMinimum cover over re-barsII.i. Air Entrained - Manufacture Specification 5.5ml/1% air/100 kg cement (usemaximum or +2% airAvailable Materialscontent)ii.Coarse Aggregates25 mm Nominal Maximum Aggregate SizeRounded River Gravel (Note: apply water content reduction)Bulk Oven-dry specific gravity = 2.65Absorption0.2%Moisture Content1.4%Oven-dry Rodded DensityFine AggregatesNatural Sand1565 kg/m3iii.Bulk Oven-dry specific gravity =Absorption= 0.7%1.6%2.60Moisture ContentFineness ModulusDetermine the following:Type of cement to be used.b. The strength requirement.c. The water-cement ratio requirement.d. The coarse aggregate requirement.The air content requirement.f.е.The workability requirement.The water content requirement.g.The cementing materials content requirement.i.The admixture requirement.j.The maiet a coractinne /1E DeintelThe fine aggregate requirement.N I I II

Following is required answer : NOTE : Due to guidelines, first 3 parts are necessary to answer.

Design a concrete mix for the following conditions and constraints using the Absolute Volume Method. The material description are as follows: I. Design Environment i. Retaining Wall exposed to moderate sulfate exposure ii. Required Design Compressive Strength = 27.6 MPa iii. Standard Deviation of Compressive Strength of 1.8 MPa is expected (25 sample only) iv. Minimum space between re-bars vi. Minimum dimension 200 mm = 50 mm = 50 mm v. Minimum cover over re-bars vii. Maximum Slump is required viii. Only air entrained is allowed

Design a concrete mix for the following conditions and constraints using the Absolute Volume Method. The material description are as follows: I. Design Environment i. Retaining Wall exposed to moderate sulfate exposure ii. Required Design Compressive Strength = 27.6 MPa iii. Standard Deviation of Compressive Strength of 1.8 MPa is expected (25 sample only) iv. Minimum space between re-bars vi. Minimum dimension 200 mm = 50 mm = 50 mm v. Minimum cover over re-bars vii. Maximum Slump is required viii. Only air entrained is allowed

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Design a concrete mix for the following conditions and constraints using the Absolute Volume Method. The material description are as follows: I. Design Environment i. Retaining Wall exposed to moderate sulfate exposure ii. Required Design Compressive Strength = 27.6 MPa iii. Standard Deviation of Compressive Strength of 1.8 MPa is expected (25 sample only) iv. Minimum dimension = 200 mm v. Minimum space between re-bars = 50 mm vi. Minimum cover over re-bars = 50 mm vii. Maximum Slump is required viii. Only air entrained is allowed II. Available Materials i. Air Entrained – Manufacture Specification 5.5ml/1% air/100 kg cement (use maximum or +2% air content) ii. Coarse Aggregates 25 mm Nominal Maximum Aggregate Size Rounded River Gravel (Note: apply water content reduction) Bulk Oven-dry specific gravity = 2.65 Absorption = 0.2%…
Design the concrete mix according to the following conditions:Design Environment• Building beamo Required design strength = 27.6 MPao Minimum dimension = 150 mmo Minimum space between rebar = 40 mmo Minimum cover over rebar = 40 mmo Statistical data indicate a standard deviation of compressive strengthof 2.1 MPa is expected (more than 30 samples).• Only air entrainer is allowed.• Moderate Sulphate exposure.• Available Materialso Air entrainer:▪ Manufacture specification 6.3 mL/1% air/100 kg cement.o 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/m3▪ Moisture content = 2.5o Fine aggregate:▪ Natural sand▪ Bulk oven-dry specific gravity = 2.659▪ Absorption = 0.5▪ Moisture content = 2▪ Fineness modulus = 2.47o Cement▪ Type II (Moderate Sulphate Resistant)▪ Specific Gravity = 3.15Based on this information, find the following and summarize the findings in a table d) The amount…
Design the concrete mix according to the following conditions:Design Environment• Building beamo Required design strength = 27.6 MPao Minimum dimension = 150 mmo Minimum space between rebar = 40 mmo Minimum cover over rebar = 40 mmo Statistical data indicate a standard deviation of compressive strengthof 2.1 MPa is expected (more than 30 samples).• Only air entrainer is allowed.• Moderate Sulphate exposure.• Available Materialso Air entrainer:▪ Manufacture specification 6.3 mL/1% air/100 kg cement.o 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/m3▪ Moisture content = 2.5o Fine aggregate:▪ Natural sand▪ Bulk oven-dry specific gravity = 2.659▪ Absorption = 0.5▪ Moisture content = 2▪ Fineness modulus = 2.47o Cement▪ Type II (Moderate Sulphate Resistant)▪ Specific Gravity = 3.15Based on this information, find the following and summarize the findings in a table.a) Required…
A heavily reinforced retaining wall is to be constructed and you are asked to design a concrete mixfollowing the ACI methodology. The concrete mix specifications are:o Characteristic compressive strength of 30 N/mm 2 at 28 days.o Failure rate of 1%o Previous control data yielded a standard deviation of 2 N/mm 2o Air-entraining is required for extreme exposureo Minimum cement content 450 kg/m 3o Required slump 160 mmo Maximum aggregate size 10 mmo Fineness modulus of aggregates is 2.90o Dry rodded mass of coarse aggregates is 1650 kg/m 3o Relative density of aggregates: 2.5o Coarse aggregate has 3% moisture.o Fine aggregate has 4% moisture.o Volume of the required trial mix: 18 m 3 Following the ACI step-by-step process estimate the cement content of the mix, the total mix quantities required for this project and Using the ACI volumetric approach, provide the estimated mix quantities for the above specifications and comment on any differences between the mass approached followed in the…
Design a concrete mix for the following conditions and constraints using the absolute volume method:Design EnvironmentBuilding frameRequired design strength = 27.6 MPaMinimum dimension = 150 mmMinimum space between rebars = 40 mmMinimum cover over rebars = 40 mmStatistical data indicate a standard deviation of compressive strength of 2.1 MPa is expected (more than 30 samples)Only air entrainer is allowedAvailable MaterialsAir EntrainerManufacturer specification 6.3 ml/1% air / 100 kg cementCoarse aggregate19 mm nominal maximum size, river gravel (rounded)Bulk oven dry specific gravity = 2.55, Absorption = 0.3%Oven dry-rodded density = 1761 kg/m3Moisture content = 2.5%Fine aggregateNatural sandBulk oven-dry specific gravity = 2.659, Absorption = 0.5%Moisture content = 2%Fineness modulus = 2.47
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
For a concrete mix having a water-cement ratio of 0.48, water content of 190 kg/m3, and the ratio of coarse to fine aggregate is 59% : 41%. Show the porportions of that mix by weight using absolute volume method. Using BSI Method Only
Design a concrete mix which is already solved by using Eprical Formulas according to ACI and TS and compate the results.
Subject concrete technology Q: a)What particular precautions would you take when concreting (i) In winter, and (ii) in hot weather? b)What are the effects of hot weather on fresh concrete?
A hollow concrete masonry unit has an actual dimension of 150mm x 200mm x 400mm(W x H x L). The unit was tested in a compression machine with the following result.Failure load = 1,200 kNNet volume = 4,400,000 mm3Determine: a) the gross area compressive strength.b) the net area compressive strength.
Design the concrete mix according to the following conditions: Design Environment Building frame Required design strength = 27.6 MPa Minimum dimension = 150 mm Minimum space between rebar = 40 mm Minimum cover over rebar = 40 mm Statistical data indicate a standard deviation of compressive strength of 2.1 MPa is expected (more than 30 samples). Only air entrainer is allowed. Available Materials Air 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 = 0.3% Oven-dry rodded density = 1761 kg/m3 Moisture content = 2% Fineness modulus = 2.47
A hollow concrete masonry unit has actual gross dimensions of 190 mm X190 mm X 390 mm (width X height X length). The unit is tested in a compression machine with the following results:Failure Load = 1110 kNNet volume of 6 X 106 mm3a. Calculate the gross area compressive strength.b. Calculate the net area compressive strength.