Influence of the Gypsum Dehydration Temperature and Alkali Additives on the Properties of Anhydrite Cement

被引：4

作者：

Leskeviciene, V. ^{[1
]}

Sarlauskaite, I. ^{[1
]}

Nizeviciene, D. ^{[1
]}

Kybartiene, N. ^{[1
]}

机构：

[1] Kaunas Univ Technol, LT-50270 Kaunas, Lithuania

来源：

SCIENCE OF SINTERING | 2010年 / 42卷 / 02期

关键词：

Anhydrite cement; Additive; Dehydration; Compressive strength; Setting time;

D O I：

10.2298/SOS1002233L

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

While dehydrating gypsum with additives at the temperatures of 800 degrees C and 900 degrees C the influence of alkali additives on both the crystalline structure of anhydrite and properties of anhydrite binder was investigated. The industrial and household wastes including other low-cost materials were used as additives. Having heated them with gypsum the anhydrite with alkali activation properties was obtained. The properties of such substances were evaluated using the methods of chemical, diffractive X-ray scanning and scanning electron microscopy (SEM) analyses. Some additives, e.g. 5 % ground glass waste, were found to increase crystal agglomerate formation of anhydrite binder, accelerate the hydration process of anhydrite and double the compressive strength of hydrated samples compared to samples without additives.

引用

页码：233 / 243

页数：11

共 10 条

[1]

ANDRIUSIENE J, 1988, Patent No. 1837055

[2] Thermal behaviour of β-anhydrite CaSO4 to 1,263 K [J].