REcovey and use of Cement kIlN Dust as the alkali activator for geopolymeric (cementless) concrete building blocks (RESCIND)

RESCIND将利用两种持续产生的废物流的价值：燃煤发电站的粉末燃料灰（PFA，“飞灰”）和水泥生产中的水泥窑粉尘（CKD），以开发低碳建筑产品。CKD是水泥熟料生产的副产品，为水泥行业带来了巨大的处置成本。CKD可以与PFA或其他富硅材料一起使用，以生产水泥替代品。这种“无水泥”粘合剂可以完全取代混凝土生产中的波特兰水泥，并与再生骨料结合使用，使“所有废物”混凝土产品成为可能。RESCIND将展示使用CKD作为无水泥混凝土块生产的有利材料。将制造无水泥混凝土块并进行机械测试以证明其性能。通过使用回收的拆除骨料，“全废”混凝土将得到展示

RESCIND will harness the value in two continuously produced waste streams: Pulverised Fuel Ash (PFA, ‘fly ash’) from coal-fired power stations and Cement Kiln Dust (CKD) from the production of cement to develop a low-carbon building product. CKD is a by-product of cement clinker production which generates significant disposal costs for the cement industry. CKD can be used with PFA, or other silicon rich material, to produce a cement replacement. . This “cementless” binder can wholly replace Portland cement in concrete production and in conjunction with recycled aggregate enables “all waste” concrete products. RESCIND will demonstrate the use of CKD as an enabling material for cementless concrete block production. Cementless concrete blocks will be manufactured and mechanically tested to demonstrate performance. Through the use of recycled demolition aggregate, “all-waste” concrete will be demonstrated