Q°: for a specific concrete mix, the average compressive strength (CS) (28.2 MPa) and standard deviation (1.8 MPa). An engineer selected 100 cubes for testing, determine the probability of: 1. Getting on CS>29.5 2. Getting on 21

Q°: for a specific concrete mix, the average compressive strength (CS) (28.2 MPa) and standard deviation (1.8 MPa). An engineer selected 100 cubes for testing, determine the probability of: 1. Getting on CS>29.5 2. Getting on 21

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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Concept explainers

Types of Concrete

Concrete is the fundamental material used in civil engineering such as building materials for building structures. Concrete is an aggregate mixture of cement, sand, and fine and coarse rock pieces. The cement acts as a binding material that holds the compositions together, sets, and hardens with time. Apart from cement, there are other different types of binding materials used, such as lime concrete, bitumen, asphalt, and so on.

Question

Q°: for a specific concrete mix, the average compressive strength
(CS) (28.2 MPa) and standard deviation (1.8 MPa). An engineer
selected 100 cubes for testing, determine the probability of:
1. Getting on CS>29.5
2. Getting on 21<CS<27.5.
3. Getting on 28.6<CS<30.2.

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