what are the matirials to do cement and why it's needed?
Answers
Answer:
The commonest calcareous raw materials are limestone and chalk, but others, such as coral or shell deposits, also are used. Clays, shales, slates, and estuarine muds are the common argillaceous raw materials.
Explanation:
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Answer:
Answer:•
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.•
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.•May improve durability.
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.•May improve durability.•
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.•May improve durability.•Require better curing, and therefore increase cost of placing. GGBS can cause bleeding, but PFA generally improves cohesion.
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.•May improve durability.•Require better curing, and therefore increase cost of placing. GGBS can cause bleeding, but PFA generally improves cohesion.•
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.•May improve durability.•Require better curing, and therefore increase cost of placing. GGBS can cause bleeding, but PFA generally improves cohesion.•PFA and CSF produce a darker colour mix. GGBS gives an almost white colour (it may be a bit blue or green initially, but this soon fades).
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.•May improve durability.•Require better curing, and therefore increase cost of placing. GGBS can cause bleeding, but PFA generally improves cohesion.•PFA and CSF produce a darker colour mix. GGBS gives an almost white colour (it may be a bit blue or green initially, but this soon fades).•
Answer:•Substantial reduction in carbon footprint, due to reduction in cement content.•Low early strength (except CSF).•Reduce cost of raw materials (assuming CSF is used to save cement).•Increase cost of production and possibility of errors in mix proportions.•May improve durability.•Require better curing, and therefore increase cost of placing. GGBS can cause bleeding, but PFA generally improves cohesion.•PFA and CSF produce a darker colour mix. GGBS gives an almost white colour (it may be a bit blue or green initially, but this soon fades).•GGBS, PFA, and CSF are all industrial by-products that could be environmentally damaging if not mixed into concrete (substantial amounts of PFA have to be disposed of each year, see the discussion in Section 40.3.1).