A concrete mix includes the following ingredients per cubic meter: Cement%3D400 kg Water=184 kg No admixture Table below shows possible alternatives mix ingredients. Indicate in the appropriate boxes in the table what will happen in each case for the workability and the ultimate compressive strength as increase, decrease or approximately the same. What will haPpen? Cement Water Admixture (kg) (kg) Ultimate compressive Workability strength 400 225 None 449 184 None Water 400 184 Reducer Water 400 128 Reducer 400 184 Super Plasticizer 400 184 Air Entrainer 400 184 Accelerator

A concrete mix includes the following ingredients per cubic meter: Cement%3D400 kg Water=184 kg No admixture Table below shows possible alternatives mix ingredients. Indicate in the appropriate boxes in the table what will happen in each case for the workability and the ultimate compressive strength as increase, decrease or approximately the same. What will haPpen? Cement Water Admixture (kg) (kg) Ultimate compressive Workability strength 400 225 None 449 184 None Water 400 184 Reducer Water 400 128 Reducer 400 184 Super Plasticizer 400 184 Air Entrainer 400 184 Accelerator

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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3. A concrete mix includes the following ingredients per cubic foot: (14 pts.) = 25 lbs. = 11 lbs. Cement Water No Admixture Table shows possible changes that can be made to the mix ingredients. Indicate in the appropriate boxes in the table what will happen in each case for the workability and the ultimate compressive strength as increase, decrease, or approximately the same. What WIlII Happen? Ultimate Compressive Strength Cement (Ib) Water (Ib) Admixture Workablity None 25 28 15 11 None Water reducer Water reducer Superplasticizer Air entrainer Accelerator 25 11 25 8. 25 11 25 11 25 11
A concrete mix includes the following ingredients per cubic meter: a. Cement = 400 kg b. Water = 176 kg c. No admixture Table P6.30 shows possible changes that can be made to the mix ingredi- ents. Indicate in the appropriate boxes in the table what will happen in each case for the workability and the ultimate compressive strength as increase, decrease, or approximately the same.
Question 31 According to ASTM C33 Standard Specification for concrete Aggregates, what is the nominal maximum size aggregate? % Retained by Sieve Size mass # 4 95-100 # 3/8 70-90 # 3/4 30-65 1.5" 0-5 2" O Sieve 1.5" O Sieve 3/8" Sieve 2" O Sieve #4
Question 30 According to ASTM C33 Standard Specification for concrete Aggregates, what is the maximum size aggregate? % Retained by Sieve Size mass # 4 95-100 # 3/8 70-90 #3/4 30-65 1.5" 0-5 2" O Sieve 2" O Sieve #4 O Sieve 1.5" O Sieve 3/8"
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Analysis of Fine AggregatesFill in the table:
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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?
What is the relationship of rodded bulk density to percentage voids in aggregates? What is the purpose of this two? How can this two affect the concrete
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