Use of local raw materials for construction purposes

Since some years research is going on in Jordan to produce construction materials, starting from local raw materials. Geopolymers have the benefit that they have a smaller environmental impact than concrete, but also the main raw material, for instance kaolinite, is often locally available. To minimize the production cost, the kaolinite will be used as such and thus not be dehydroxylated.
The aim of this research is to
-find out which local raw materials can be used (reactive and filler)
-optimize the production (composition, curing ) of bricks, tiles,.
-find out how to do the production in the field
-make a water reservoir for water harvesting

The proposed raw materials are kaoline, bentonite, tripoli, porcelanite, diatomite, silica sand, granite, zeolitic tuff, scoria (tuff) and basalt. The reactivity of these materials was tested. With kaolinite specimens with compressive strength of 41 MPa under dry conditions and 23 MPa under immersed water conditions were obtained. Since the materials will be used for the construction of water ponds, the durability of these specimens was tested.
Also these materials exhibit good mechanical performance upon heating to 600 °C, opening a possibility for use under elevated temperatures.

Jaar van publicatie:2010

Trefwoorden:geopolymer, mechanical properties, XRD, TGA, durability

Toegankelijkheid:Closed