Building Material and Construction (BMC)
Notes on Building Material and Construction (in short form, BMC) Common Building Materials from Building Material and Construction are Cement Lime Aggregates Mortar Admixture Concrete Bricks Stones Steel Timber Miscellaneous Cement Cement is an organic building material with a binding property of construction that was invented by Mr. Joseph Aspedin in the years 1824-1825. Calcareous Compounds (Compounds containing Ca, Hg) and Argillaceous Compounds make up the majority of cement (Compounds having Silica, Aluminium Oxides) Examples of Calcareous Compounds are Limestones, Cement Rocks, Chalk, Marine Shell, Alkali Waste Examples of Argillaceous Compounds are the Clay, Slate, Ash OPC's Different Constituents (i.e Ordinary Portland Cement) Lime (CaO - 62% to 67%) It gives cement its strength and stability. If there is so much lime in the mortar, it becomes unsound, allowing it to spread and then disintegrate. A lack of lime decreases the strength of