LTGS, acronym for Low Temperature Geopolymeric Setting, is a low cost, easy to produce solution, for the making of bricks out of soils and laterites.
The geopolymer LTGS brick is an ideal construction technology for emerging countries, because it offers many characteristics that fulfils the population demands.
This brick uses a very cheap material available in great quantity: lateritic clay earth. This special and abundant earth, mixed with a simple geopolymer binder is compressed to give the shape of a brick then heated in a furnace. Heated at 85°C, LTGS brick is water stable and has enough compressive strength to build a wall. Heated at 250°C, it resists to freezing. At 450°C, its strength increases more, so that it is possible to manufacture structural elements like beams for doors and windows. Compared to a traditional brick fired at 1000°C in a kiln, the LTGS brick needs about eight times less energy for an equivalent strength. Contrary to a traditional brickyard, it requires less equipment and is less expensive to produce. A traditional brickyard must have a certain size before being profitable, whereas LTGS brick can be produced by small brickyards in a village or a small city with less equipment and finance.
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