What is the minimum strength that concrete must reach prior to freezing so that theoverall strength gain is not affected?OA 5.0 MPaO B) 2.5 MPaO0 4.5 MPaOD) 3.5 MPaWhen testing for organic impurities in Lab 4, which colour number was deemed to bethe limit for acceptable organics in the fine aggregate.ON 1O B) 2O D) 3Concrete is required for the construction of an agricultural dairy barn floor slab inCentral Alberta. The floor slab will be exposed to freeze/thaw conditions. Which ofthe following exposure classes best describes the environmental conditions that theconcrete will be exposed to?O Al A-4O B) S-2O D) A-2Slow setting may be caused by:O A Prolonged cold weather when protection is not provided to keep the concretewarmO B) Not having enough fly ash in the concreteOC) Cold as-delivered concrete placed during hot weatherOD) Not enough water in the concrete to fully hydrate the cement< O O

The minimum strength that concrete mus overall strength gain is not affected:

Answered: What is the minimum strength that…

What is the minimum strength that concrete must reach prior to freezing so that the overall strength gain is not affected? ON SO MPa O B) 2.5 MPa O045 MPa O DI 35 MPa

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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Question

What is the minimum strength that concrete must reach prior to freezing so that the
overall strength gain is not affected?
OA 5.0 MPa
O B) 2.5 MPa
O0 4.5 MPa
OD) 3.5 MPa
When testing for organic impurities in Lab 4, which colour number was deemed to be
the limit for acceptable organics in the fine aggregate.
ON 1
O B) 2
O D) 3
Concrete is required for the construction of an agricultural dairy barn floor slab in
Central Alberta. The floor slab will be exposed to freeze/thaw conditions. Which of
the following exposure classes best describes the environmental conditions that the
concrete will be exposed to?
O Al A-4
O B) S-2
O D) A-2
Slow setting may be caused by:
O A Prolonged cold weather when protection is not provided to keep the concrete
warm
O B) Not having enough fly ash in the concrete
OC) Cold as-delivered concrete placed during hot weather
OD) Not enough water in the concrete to fully hydrate the cement
< O O

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