1) Compound composition of a Portland cement is given in the table below. What is the type of this Portland cement according to ASTM standard classification? What type of construction work is this Portland cement suitable for and why? Compound composition of PC, % C;S 47 C;S 25 C3A 12 C4AF

1) Compound composition of a Portland cement is given in the table below. What is the type of this Portland cement according to ASTM standard classification? What type of construction work is this Portland cement suitable for and why? Compound composition of PC, % C;S 47 C;S 25 C3A 12 C4AF

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 Cement

Cement is a fine mixture of limestone, chalk, or marl and clay which when mixed with water, becomes compacted due to the formation of strong molecular bonds. Due to hydration, cement turns into a hard mass when left for a sufficient amount of time upon mixing with water. The water turns the cement compounds into gel-like submicroscopic particles having higher surface areas. It is due to the hydration properties of cement, they are often known as hydraulic cement. For instance, Portland cement is a popular example in this category.

Question

1) Compound composition of a Portland cement is given in the table below. What is the type of
this Portland cement according to ASTM standard classification? What type of construction
work is this Portland cement suitable for and why?
Compound composition
of PC, %
C;S
47
C2S
25
C3A
12
C4AF
9

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The relative amounts of the four chemicals in the final cement depends on the desired properties of the cement concrete. The table below gives the typical compound composition of different types of Portland cements Compound Composition No. C3S C,S C3A C4AF 1 60 13 9. 8 40 40 4 3 26 50 5 12 4 50 24 11 5 42 33 5 13 Depending on the properties of the different chemicals and their relative composition, identify the high early strength (HE) and low-heat (LH) cements from the table. Give detail explanation for your answer
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