Concrete Technology: A Comprehensive Guide

Posted by admin on May 19, 2024 in Physics | 0 comments

Concrete Technology: A Comprehensive Guide

Phase and Chemical Composition of Portland Cement Clinker

THE COMPONENT PHASES OF PORTLAND CEMENT

• •3CaO.SiO₂ (C₃S alite) 55-65 %
• •2CaO.SiO₂ (C₂S belite) 15-24 %
• •3CaO.Al₂O₃ (C₃A tricalcium aluminate) 8-12 %
• •4CaO.Al₂O₃.Fe₂O₃ (C₄AF brownmillerite) 8-12 %

CHEMICAL COMPOSITION OF CEMENTS

CaO 60 ÷ 67 % SiO2 18 ÷25 % Al2O3 2.5 ÷ 8 % Fe2O3 0.5 ÷ 6 % MgO 0,1 ÷ 4 % SO3 1,7 ÷ 4,6 % Na2O+K2O 0,2 ÷ 2 %

Physical and Mechanical Properties of Cement

• Cement

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Posted by admin on Jul 5, 2018 in Chemistry | 0 comments

Apparently unaware of Smeaton’s work, the same principle was identified by Frenchman Louis Vicat in the first decade of the nineteenth century. Vicat went on to devise a method of combining chalk and clay into an intimate mixture, and, burning this, produced an “artificial cement” in 1817^[14] considered the “principal forerunner”^[3] of Portland cement and “…Edgar Dobbs of Southwark patented a cement of this kind in 1811.”^[3]

In Russia, Egor Cheliev created a new binder by mixing lime and