Investigation of immobilized ability of alkali activated cement using various iron compounds
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2018, Vol 1, Issue 71
Abstract
Theoretical backgrounds for the production of alkali activated cements using iron-containing wastes, which are able to hold heavy metal compounds in the cement matrix of hardened stone reliably, have shown. The investigation of structure formation of alkali activated cements in the presence of different iron compounds was carried out and the strength characteristics of the hardened stone in the pastes were determined. The main hydration products of alkali activated cement are presented by mainly low-crystallized low-calcium hydrosilicates and calcite. The using of iron compounds promotes the formation of catophorite minerals, which are presented by sodium-calcium iron-containing compounds. The investigation of the hardened stone surface was carried out by SEM analysis which allowed identifying a new formation amorphous structure. The degree of immobilization of heavy metals in the cement matrix of alkali activated cement has been studied and confirms the safety of the obtained materials to the environment. The level of reliability of retaining of heavy metal compounds reaches up to 99%.
Authors and Affiliations
O. Yu. , Kovalchuk, A. V. , Pasko, V. V. , Zozulynets, О. V. , Boiko
Keywords
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