Sub-topic 1
2018 · National One-Eighth
Free
Cement chemistry: source of calcium in clinker
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Sub-topic 2
2013 · National Semifinal
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Product of heating limestone with sand (calcium silicate)
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Sub-topic 3
2013 · National Semifinal
Premium
Products of heating limestone with clay (calcium silicate, oxide, aluminate)
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Sub-topic 4
2013 · National Semifinal
Premium
Raw materials for soda glass versus pyrex glass
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