Group C: Design a concrete mix to implement a Mass concrete (exposed to sever conditions moisture and freezing and thawing) with design compressive strength 25 MPa, a standard deviation equals to 4 and the percentage expected less than minimum strength is 10%. Sulphate Resisting Portland Cement is used. The maximum size of an angular aggregate is 50 mm with apparent density 1500 kg/m3. The available fine aggregate has fineness modulus 2.4 an air entraining agent has been used in the mix.

Group C: Design a concrete mix to implement a Mass concrete (exposed to sever conditions moisture and freezing and thawing) with design compressive strength 25 MPa, a standard deviation equals to 4 and the percentage expected less than minimum strength is 10%. Sulphate Resisting Portland Cement is used. The maximum size of an angular aggregate is 50 mm with apparent density 1500 kg/m3. The available fine aggregate has fineness modulus 2.4 an air entraining agent has been used in the mix.

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

compute for the corrected amount of water needed in the concrete mix if the mass and fine coarse aggregates are 740 kg and 1100 kg, and both have a natural moisture content of 2% and 1.5% respectively. water/cement ratio is 0.5 and the mass of ratio of concrete is 1:2:3
We require a mix with a mean 28-day Required Average Compressive Strength of 35 MPa the size of the member and the spacing of the reinforcement require a slump of 50 mm and a maximum size of aggregate of 31 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.
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.
5 - Why dolomitic aggregate is not preferred in concrete.A) Increases the vacancy rate.B) It creates expansion.C) AllD) Because it is inertE) Increases permeability.
The width of the expansion joint is 20mm in a cement concrete pavement. The laying temperature is 20 °C and the maximum slab temperature in summer is 60 °C. The coefficient of thermal expansion of concrete is 10 x 10-6 mm/ mm / °C and the joint filler compresses upto 50% of the thickness. The spacing between expansion joints should be
Concrete is required for a column that will be Severe Exposure to freezing and thawing. The cross section of the column is 300 × 300 mm. The smallest spacing between reinforcing steel is 40 mm. The specified compressive strength of concrete at 28 days is 40 MPa with a slump of 25 to 50 mm. The properties of materials are as follows: (a) Cement used is type I Portland cement with a specific gravity of 3.10. (b) The available coarse aggregate has a maximum size of 23 mm, a dry-rodded unit weight of 1800 kg/m3, a bulk specific gravity (SSD) of 2.68, absorption capacity of 0.65%, and moisture content (SSD) of 0.27%. (c) The fine aggregate has a bulk specific gravity (SSD) of 2.75, absorption capacity of 1.5%, a moisture content (SSD) of 2.5%, and a fineness modulus of 2.7,The aggregates conform to the ASTM C33-84 requirements for grading.
A concrete mix design uses coarse aggregates with NMAS of 19 mm. Fineness modulus of 2.8 and DRUW of 135 lb/ft^3. What is the mass of Coarse aggregates in the mix?
Concrete is required for walls of a building that will be Moderately exposed to freezing and thawing. The cross section of a wall is 300 x 1500 mm. The smallest spacing between reinforcing steel is 50 mm. The specified compressive strength of concrete at 28 days is 30 MPa and a slump of 40 mm. Portland cement type I is used with specific gravity of 3.12, maximum size of aggregate 27 mm and fineness modulus of fine aggregate is 2.4, absorption capacity and moisture content of fine aggregate are of 0.92%, and 1.95% respectively. The dry-rodded unit weight of coarse aggregate is 1820 kg/m³, absorption capacity and moisture content of coarse aggregate are of 0.75%, and 1.85% respectively. Both aggregates have a bulk specific gravity (SSD) of (2.45). 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.
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.
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.
Please solve only Question-4 and please step by step thanks for the helping and it is not assgiment or exam queastion.