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Used with appropriate refractory aggregates, Ciment Fondu® mortars & concretes can withstand up to 1200°C.
Applications
- Fireplace & chimney construction
- Barbecues & pizza ovens
- Incinerators
- Foundry floors & metallurgical works
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Guidelines
1. Selection of the aggregates should be appropriate to the temperature requirement (see below)
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Type or aggretates
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Max. service temperature |
| Siliceous |
500°C |
| Basalt/granite |
800°C |
| Alag® |
1100°C |
| Chamotte |
1250°C |
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2. Where thermal shock &/or abrasion is present, the use of synthetic Alag® aggregate is recommended , which resists up to 1100°C[more details]
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Directions for use with
siliceous aggregates
PREPARATION
All formwork should be watertight clean and coated with mould oil. To provide a good key for bonding, the base concrete should be free of laitance and soaked with water.
MIXING
Mix cement and aggregates in the mixer or with a shovel. The ingredients are usually added in the following order : 80% of the prepared water, gravel, Ciment Fondu®, sand, adding the balance of the water to obtain a plastic consistency.
CASTING
For the best performance, the concrete should be compacted by rodding or vibration
DEMOULDING
Should be done as soon as possible (normally 4-5 hours after casting for non load-bearing structures).
CURING
Due to the rapid evolution of heat during hardening, Ciment Fondu® based concrete and mortars must be kept damp immediately after setting and during the first 24 hours by regular spraying of water, use of wet sacking or a curing compound.
FIRST USE
Allow at least 48 hours prior to use.
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