Question

What are the composition of Portland Cement

Answer 1

Answer:

The chief chemical components of portland cement are calcium, silica, alumina and iron. Calcium is derived from limestone, marl or chalk, while silica, alumina and iron come from the sands, clays and iron ore sources

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Answer 2

Explanation:

The chief chemical components of the Portland cement are calcium , silica , alumina , iron. Calcium is a derived from the limestone , marl or chalk , white silica , alumina and iron come from the sands , clays and iron ore resources.