Concrete is required for a foundation located belowground where no substantial freezing and thawingoccur. The 28-day compressive strength should be4,000 lb./in2. The slump should be 2in. and themaximum aggregate size should not exceed 4 in.The properties of the materials are as follows:Cement : Type I, specific gravity = 3.15Coarse Aggregate: Bulk specific gravity (SSD) =2.82;absorption capacity = 3%; dry-rodded unit weight =125 Ib./ft.3;surface moisture = 1%, Moisture content = 4%Fine Aggregate: Bulk specific gravity (SSD) = 2.60;absorptioncapacity = 1.3%; fineness modulus = 2.70; surface%3D%3Dmoisture = 2%Moisture content = 3.3%Compute for the estimated batch weights per cubicyard and the total in Ib/ft3

Given, f'c = 4000 psi Aggregate size = 3/4 in

Concrete is required for a foundation located below ground where no substantial freezing and thawing occur. The 28-day compressive strength should be 4,000 lb./in2. The slump should be 2in. and the maximum aggregate size should not exceed ¾ in. The properties of the materials are as follows: Cement : Type I, specific gravity = 3.15

Concrete is required for a foundation located below ground where no substantial freezing and thawing occur. The 28-day compressive strength should be 4,000 lb./in2. The slump should be 2in. and the maximum aggregate size should not exceed ¾ in. The properties of the materials are as follows: Cement : Type I, specific gravity = 3.15

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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We require a mix with a mean 28-day compressive strength of 40 MPa the size of the member and the spacing of the reinforcement require a slump of 45 mm and a maximum size of aggregate of 28 mm. Portland cement type I is used with specific gravity of 3.15, dry-rodded unit weight of coarse aggregate 1750 kg/m³ and bulk specific gravity (SSD) of 2.55. The fineness modulus of fine aggregate is 2.8 and bulk specific gravity (SSD) of 2.5 ,No air entrainment is required. Neglect water absorption and moisture content of both aggregates. The aggregates conform to the ASTM C33-84 requirements for grading. Estimate the quantity of (cement, fine aggregate, coarse aggregate and water) for 1m³ concrete.
Description Concrete is required for a foundation located below ground where no substantial freezing and thawing occur. The 28-day compressive strength should be 4,000 lb./in?. The slump should be 2 in. and the maximum aggregate size should not exceed 4 in. The properties of the materials are as follows: Cement : Type I, specific gravity = 3.15 Coarse Aggregate: Bulk specific gravity (SSD) = 2.82; absorption capacity = 3%; dry-rodded unit weight = 125 lb./ft.3; surface moisture = 0%; Moisture content = %3D 3% Fine Aggregate: Bulk specific gravity (SSD) = 2.60; absorption capacity = 1.3%; fineness modulus = 2.70; surface moisture 2%; Moisture content = 3.3% %3D Box your final estimate.
For a design a concrete mix which is going to be used in Muğla the 28-day compressive strength of the concrete is required to be 30 MPa and slump of the fresh concrete is specified as 8-10 cm. Maximum size of the aggregate is 25 mm. Other necessary data are given as: Specific gravity of cement = 3.1 Bulk specific gravity of coarse aggregate = 2.68 Bulk specific gravity of fine aggregate = 2.64 Absorption capacity of both aggregates is 1.5% Fineness modulus of fine aggregate = 2.8 Dry rodded unit weight of the coarse aggregate = 1600 kg/m³ According to ACI 211 and based on absolute volumes: What should be the weight of SSD coarse aggregate in kg's? What should be the amount of mixing water in kg's? What should be the water to cement ratio? What should be the volume of dry rodded coarse aggregate per unit volume of concrete? What should be the air content in 96? What should be the SSD weight of fine aggregate in kg's? Seç Seç... Seç Seç... # Seç + Seç... # # + ÷
A concrete mix with a 75-mm slump, water-cement ratio of 0.50, and sand with a fineness modulus of 2.4 contains 1850 kg/m^3 of coarse aggregate and its maximum aggregate size is 25 mm. a. Compute the required weight of coarse aggregate per cubic meter. b. To adjust the mix so as to increase the compressive strength, the water-to-cement ratio is reduced to 0.45. Will the quantity of coarse aggregate increase, decrease, or stay the same? Explain your answer.
Design a concrete mix for construction of an elevated water tank. Required Slump = 3”. Maximum Size of Aggregate is 19mm. The specified design strength of concrete is 30 MPa at 28 days measured on standard cylinders. The specific gravity of FA and C.A. are 2.65 and 2.7 respectively. The dry rodded bulk density of C.A. is 1600 kg/m3, and fineness modulus of FA is 2.80. Ordinary Portland cement (Type I) will be used. S.G. = 3.15 C.A. is found to be absorptive to the extent of 1% and free surface Fill also the table.
ASAP
Design a concrete mix for construction of an elevated water tank. Required Slump = 3”. Maximum Size of Aggregate is 19mm. The specified design strength of concrete is 30 MPa at 28 days measured on standard cylinders. The specific gravity of FA and C.A. are 2.65 and 2.7 respectively. The dry rodded bulk density of C.A. is 1600 kg/m3, and fineness modulus of FA is 2.80. Ordinary Portland cement (Type I) will be used. S.G. = 3.15 C.A. is found to be absorptive to the extent of 1% and free surface Fill out the table below.
Consider the following example: The 28-day compressive strength should be 4,000 psi. The slump should be between 3 and 4 in. and the maximum aggregate size should not exceed 1 in. The coarse and fine aggregates in the storage bins are wet. The properties of the materials are as follows: • Cement: Type I, specific gravity = 3.15 • Coarse Aggregate: Bulk specific gravity (SSD) = 2.87; absorption capacity= 1.6%; dry-rodded unit weight = 121 lb./ft.3 surface moisture = 0.75% • Fine Aggregate: Bulk specific gravity (SSD) = 2.67; absorption capacity= 1.3%; fineness modulus = 2.70; surface moisture 1.12%
Consider the following example: The 28-day compressive strength should be 4,000 psi. The slump should be between 3 and 4 in. and the maximum aggregate size should not exceed 1 in. The coarse and fine aggregates in the storage bins are wet. The properties of the materials are as follows: • Cement : Type I, specific gravity = 3.15 • Coarse Aggregate: Bulk specific gravity (SSD) = 2.70; absorption capacity = 1.1%; dry-rodded unit weight : 105 lb./ft.3 surface moisture = 1% • Fine Aggregate: Bulk specific gravity (SSD) = 2.67; absorption capacity = 1.3%; fineness modulus = 2.70: surface moisture = 1.5% 5. What is the estimated batch weight of wet coarse aggregates in Ib/yd^3?
Concrete Mix Design-ACI Method The concrete will be non-air entrained since the structure is not exposed to severe weathering. Required average strength will be 24 MPa with slump of 75 to 100 mm. The coarse aggregate has a nominal maximum size of 37.5 mm and dry-rodded mass of 1600 kg/m. Other properties of the ingredients are: cement -- Type I with specific gravity of 3.15; coarse aggregate bulk specific gravity 2.68 and absorption 0.5 percent; fine aggregate-bulk specific gravity 2.64, absorption 0.7 percent, and fineness modulus 2.8.
Consider the following example: The 28-day compressive strength should be 4,000 psi. The slump should be between 3 and 4 in. and the maximum aggregate size should not exceed 1 in. The coarse and fine aggregates in the storage bins are wet. The properties of the materials are as follows: • Cement : Type l, specific gravity = 3.15 • Coarse Aggregate: Bulk specific gravity (SSD) = 2.70; absorption capacity = 1.1%: dry-rodded unit weight = 105 lb./ft.3 surface moisture = 1% • Fine Aggregate: Bulk specific gravity (SSD) = 2.67; absorption capacity = 1.3%; fineness modulus = 2.70; surface moisture = 1.5%
PROBLEM 1 Given the following parameters, design a Concrete Mix Design ACI Method Required average strength will be 28MPa with slump of 75 to 100mm. The coarse aggregate has a nominal maximum size of 25 mm and a dry-rodded mass of 1900kg/m'. Other properties of the ingredients are: Cement Type I specific gravity 3.15 Coarse aggregate bulk specific gravity 2.75 absorption 3% Fine aggregate bulk specific gravity 2.68 absorption 1.2 % fineness modulus 3 Adjustment for Aggregate Moisture: Tests indicate total moisture of 5 percent in the coarse aggregate and 8 percent in the fine aggregate.