Concrete Making Materials - I Cement. What is cement Manufacturing of Cement Composition and constituent of cement Types of cement Tests on Cement.

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Concrete Making Materials - I Cement

What is cement Manufacturing of Cement Composition and constituent of cement Types of cement Tests on Cement

Cement - Introduction Commonly used cement is Portland Cement. It is a material which has cohesive and adhesive properties in presence of water.

Chemical Composition of Raw Materials 4 constituents of hydraulic cements are A) Lime B) Silica and C) Alumina D) Iron oxide & traces of magnesia, SO 3 and alkalis.

Bogue Compound

Hydration of Cement When water is added to cement, it produces a significant amount of heat. This is known as hydration and the liberated heat is called the heat of hydration. FACTORS ON WHICH IT DEPENDS?

When Water is added to cement and chemical reaction starts: COMPONENT ELEMENTS (In Raw material i.e. Calcareous and argillaceous material) SiCaAlFe COMPONENT OXIDES CaOSiO2Al2O3Fe2O3 CEMENT COMPOUNDS C3SC2SC3AC4AF PORTLAND CEMENTS Various Types HYDRATION PRODUCTS GEL (C-S-H)Ca(OH) 2 On burning Clinker formed On Grinding clinker On Hydration

Contribution of Cement compounds to strength of cement

Cement : Physical Properties and Types of Cement

Physical properties can be used to classify and compare Portland cements. The physical properties of cement: Setting Time Soundness Fineness Strength

Tests on Cement 1. Fineness of cement 2. Normal consistency of cement 3. Initial and final setting times of cement 4. Specific gravity of cement 5. Soundness of cement

Tests: 1) Consistency and Setting Time (Vicat Appratus)

Tests: 2) Soundness (Le Chatelier appratus)

Tests: 3) Fineness (Blaine air- permeability method)

TYPES OF CEMENT

American Society for Testing Materials (ASTM) Classification Portland cement are classified under the ASTM standards as: Type I, Type II, Type III, Type IV, Type V, Type IP, Type IA, IIA and IIIA.

Physical Characteristics of various types of cement for RCC construction as recognized by IS