Lightweight sintered aggregate as construction material in concrete structures

The paper presents the result of testing a new patented lightweight aggregates. The only solid material used to manufactured these aggregate is fly ash. Lightweight sintered aggregate is durable, lightweight and high-strength material. It is environmentally friendly material. It has chance to by future material in concrete use. The laboratory test shown that the concrete made from the this special lightweight sintered aggregate possesses low porosity, high strength and high durability potential. The bulk density, depending on the product fraction, oscillates between 550-830 kg/m(3). This special lightweight sintered aggregate has also high resistance to crushing, when we compare to another lightweight aggregate.