Concrete Technology | 2. Cement Chemistry by Abraham | Learn Smarter
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2. Cement Chemistry

Understanding cement chemistry is essential for civil engineers, as it influences the properties of concrete, including its strength and durability. The chapter explores the chemical composition of cement, the hydration process, and the significance of various compounds and reactions in tailoring cement for specific engineering needs. Practical insights into different types of cement and their applications further support the development of durable concrete structures.

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Sections

  • 2

    Cement Chemistry

    This section covers the essential chemical components, hydration processes, and properties of cement crucial for concrete performance.

    Learning Practice

  • 2.1

    Chemical Composition Of Cement

    Cement's chemical composition is pivotal in determining the performance characteristics of concrete, particularly focusing on Ordinary Portland Cement (OPC) and its key oxides.

    Learning Practice

  • 2.2

    Major Compounds (Bogue’s Compounds)

    This section introduces the four major compounds in cement identified through Bogue’s equations, detailing their chemical formulas, typical content, and roles in cement hydration.

    Learning Practice

  • 2.3

    Heat Of Hydration

    This section discusses the heat of hydration, an exothermic reaction occurring when cement compounds react with water during the hydration process.

    Learning Practice

  • 2.4

    Hydration Reactions

    Hydration reactions involve the chemical processes that occur when cement compounds react with water, leading to the formation of strength-enhancing products.

    Learning Practice

  • 2.5

    Role Of Gypsum

    Gypsum is added to cement to regulate the hydration process, preventing flash setting and ensuring a stable setting time.

    Learning Practice

  • 2.6

    Setting And Hardening Of Cement

    This section covers the transition of cement from a fluid state to a solid state, along with the gain of strength through hydration processes.

    Learning Practice

  • 2.7

    Fineness Of Cement And Chemical Activity

    The fineness of cement influences its hydration rate and chemical activity, impacting concrete performance.

    Learning Practice

  • 2.8

    Unsoundness In Cement

    This section explains unsoundness in cement, its causes, and detection methods.

    Learning Practice

  • 2.9

    Alkali-Aggregate Reaction (Aar)

    The Alkali-Aggregate Reaction (AAR) involves alkalis in cement reacting with silica in aggregates, leading to expansion and cracking in concrete.

    Learning Practice

  • 2.10

    Types Of Cement Based On Chemical Composition

    This section outlines various types of cement tailored to specific engineering needs based on their chemical composition.

    Learning Practice

  • 2.11

    Quality Control Tests For Cement Chemistry

    This section discusses the various quality control tests essential for assessing the chemistry of cement, ensuring its performance and reliability.

    Learning Practice

References

Chapter_2_Cement.pdf

Class Notes

Memorization

What we have learnt

  • Cement chemistry is crucial...
  • The hydration process invol...
  • Different types of cement a...

Final Test

Revision Tests