公开(公告)号：US20090013907A1

公开(公告)日：2009-01-15

申请号：US11776892

申请日：2007-07-12

Applicant: Chett Boxley ,  Akash Akash ,  Qiang Zhao

Inventor： Chett Boxley ,  Akash Akash ,  Qiang Zhao

IPC: C04B18/06

CPC classification number: C04B18/08 ,  C04B7/243 ,  C04B12/005 ,  C04B14/044 ,  Y02P40/145 ,  Y02P40/165 ,  Y02W30/92 ,  C04B20/023 ,  C04B20/04

Abstract: A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with an activator solution sufficient to initiate a geopolymerization reaction and for a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 35% of the foam index of the untreated fly ash, and in some cases less than 10% of the foam index of the untreated fly ash. The activator solution may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof.

Abstract translation: 用于处理飞灰以使其高度可用作混凝土添加剂的方法。 根据泡沫指数测试，获得含有碳的粉煤灰，并被认为是混凝土不可用的粉煤灰。 将粉煤灰与足以引发地质聚合反应的活化剂溶液和用于地质聚合的飞灰混合。 地质化的粉煤灰被造粒。 根据泡沫指数测试，地质聚合飞灰被认为是混凝土的可用粉煤灰。 地质聚合的飞灰可以具有小于未处理飞灰的泡沫指数的35％的泡沫指数，并且在一些情况下小于未处理飞灰的泡沫指数的10％。 活化剂溶液可以含有碱金属氢氧化物，碳酸盐，硅酸盐，铝酸盐或其混合物。