Refractory
mortars &
concretes



Ciment
Fondu®


Alag®

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

Guidelines

1. Selection of the aggregates should be appropriate to the temperature requirement (see below)


Type or aggretates

Max. service temperature
Siliceous 500°C
Basalt/granite 800°C
Alag® 1100°C
Chamotte 1250°C
CHAMOTTE 1250°C
Adjust the concrete composition & aggregate size according to the size of installation. See Technical Reference Sheet "Refractory Concretes & Mortars"

2. Where thermal shock &/or abrasion is present, the use of synthetic Alag® aggregate is recommended , which resists up to 1100°C[more details]

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.

CIMENT FONDU® concrete may be batched and delivered ready mixed.