Sustainable medium-strength concrete (CS-concrete) from colliery spoil in south wales UK

Abstract

Two fractions of colliery spoil were mixed in equal proportions and used for concrete where the binder was PC, or novel binders comprising of either Wastepaper Sludge Ash (WSA) or WSA combined in equal proportions with Ground Granulated Blastfurnace Slag (GGBS), themselves industrial wastes or by-product materials. Compressive strength of compacted cube specimens was monitored for a period of up to 56 days of curing. Results indicate that the performance of systems incorporating CS and WSA were of very poor workability, but the resultant strength was within the low to medium category usable for blinding concrete and or for use in bound granular fill or foundations.

Anglies kasyklų atliekos yra potenciali ekologiška žaliava statybos dirbiniams gaminti, tačiau iki šiol neištirtos jos savybės ir naudojimo galimybės. Staripsnyje pateikti tyrimų rezultatai rodo, kaip, taikant specialias technologijas, savybes modifikuojančius priedus, kompozicines rišamasias medžiagas, galima anglies kasyklų atliekas naudoti vidutinio stiprumo tvariam betonui gaminti.