Effect of Incorporating Nanoporous Metal Phosphate Materials on the Compressive Strength of Portland Cement

[摘要] Nanoporous metal phosphate (NP-MPO) materials are being developed for removal of contaminant oxyanions (As(OH)O32−,CrO42−, andTcO4−), and cations (mercury, cadmium, and lead) from water and waste streams.Following sequestration, incorporation of metal laden NP-MPOs as a portion of cement formulation would provide an efficient and low-cost way to immobilize metal laden NP-MPOs in an easily handled waste form suitable for permanent disposal.There are no known investigations regarding the incorporation of NP-MPOs in concrete and the effects imparted on the physical and mechanical properties of concrete.Results of this investigation demonstrated that incorporating of NP-MPO materials requires additional water in the concrete formulation which decreases the compressive strength.Thus, incorporation of NP-MPOs in concrete may not serve as an efficient means for long-term disposal.

[学科分类] 材料工程