Development of geopolimer binder from waste powder of clay brick.

A researcher from civil engineering department of a reputable university in Turkey, has invented a geopolymer binder obtained by using waste brick powder which is obtained as residue from construction sites.

Waste clay brick powder are used to develop geopolymer binder by mixing the waste raw materials with alkali solutions at optimum concentration. The effects of alkali activator concentration, water/binder ratio and curing conditions on the strength of geopolymer binders are tested and a binder which can be used instead of cement is developed.

In order to investigate the effect of alkali activator concentration and curing condition, micro structural characteristics of the geopolymers were analyzed. Trial geopolymer concrete mixtures were prepared and their strengths were determined.

The mechanical, water transport properties and durability performance of a number of concrete mixtures were compared with equivalent strength conventional concrete mixtures. Finally, prototype reinforced concrete beams from selected concrete mixtures were produced and subjected to center-point flexural loading test.

All the results were convenient and showed superior durability performance and comparable mechanical performance compared to cementitious binders.

At this stage current invention needs industrial partners manufacturing construction materials to improve the current formulation of geoplymer binder in order to obtain a commercial product under technical cooperation as well as licensing agreement is sought to transfer the current know-how.

» Reference: TOTR20170605001/TURKEY

» Sector: Construcción

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