Thank you very much for replying Alex Mrema. This information of yours is really helpful. Also, thank you very much for your inputs, I greatly appreciate it.
Apart from cement we have other mineral binders like lime (hydraulic and non-hydraulic), gypsum, pozzolanas (natural and artificial). Their hardening mechanisms are, however, different from that of cement. While cement (Portland cements) rely on water for hardening, the other mineral binders harden as follows:
- non hydraulic limes harden by reacting with the CO2 in the air
- hydraulic limes rely on water and CO2 from the air
- gypsum react with water to form the gypsum stone. The raw material for gypsum has to be calcined first.
- pozzolanas rely on water. However, lime is required as a starter.
It should be noted, however that the properties of these other binders (physical and mechanical) and durability are different from that of Portland cements
Thank you very much for replying Alex Mrema. This information of yours is really helpful. Also, thank you very much for your inputs, I greatly appreciate it.
Many researches are ongoing in the direction of finding replacement for cement from waste by-products. One of such is ground waste glass which, however, suffers from alkali-silica reaction (ASR) which affects negatively concrete stability and strength development. Other pozzolanic by-products include silica fumes, fly ash, ground blast furnace slag or ground clay brick.
Respected Anthony Ede,
Thank you very much for replying. This information of yours is really helpful
Respected B. M. Nagabhushana · sir,
Can you please give more details about other ingredients and its ratios??
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