MECHANICAL TREATMENT OF FLY ASHES .1. PHYSICOCHEMICAL CHARACTERIZATION OF GROUND FLY ASHES

被引：114

作者：

PAYA, J

MONZO, J

BORRACHERO, MV

PERISMORA, E

机构：

[1] Departamento de Ingeniería, la Construceión Universidad Politécnica de Valencia, 46071 Valencia, Camino de Vera s/n

来源：

CEMENT AND CONCRETE RESEARCH | 1995年 / 25卷 / 07期

关键词：

D O I：

10.1016/0008-8846(95)00141-X

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Physico-chemical characteristics of mechanically treated By ashes are investigated. An original fly ash was ground, using a laboratory mill, for several times (from 10 to 60 minutes). Respect to physical characterization, fineness increasing of samples with grinding time was observed, but loss of effectiveness occurred for grinding time longer than 20 minutes. Ground samples showed higher specific gravity probably due to the presence of cenospheres in the original By ash. Only a little change in mineralogical composition of fly ashes was observed when grinding: calcium carbonate formation by reaction of calcium oxide with carbon dioxide. Chemical behavior (pH and conductivity) of fly ash/water suspensions were studied and acid neutralization capacities measured.

引用

页码：1469 / 1479

页数：11

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