Answered: Determine the moisture content in…

Engineering

Civil Engineering

Determine the moisture content in percent if the rod penetration is 10 mm.

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter3: Natural Soil Deposits And Subsoil Exploration

Section: Chapter Questions

Problem 3.1P

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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

Determine the amount of water needed to achieved the normal consistency of 650 grams cement by using Vicat apparatus. The paste shall be of normal consistency when the rod settles to a point 10 ± 1 mm below the original surface in 30 seconds after being release. Determine the moisture content in percent if the rod penetration is 10 mm.

Penetration (mm) Water Content
(%)
0.00
5%
2.00
15%
5.00
25%
8.00
35%
10.00
45%
15.00
55%

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