Effects of Bentonite Additives on Autoclaved Sand-Lime Product Properties

3rd International Conference on Innovative Materials, Structures and Technologies

Owsiak, Z.^1 ; Kostrzewa, P.^1

Kielce University of Technology, Faculty of Civil Engineering and Architecture, Department of Building Engineering Technologies and Organization, al. Tysiclecia PP 7, Kielce

25-314, Poland^1

关键词: Bentonite additives;    Internal structure;    Modified products;    Physicomechanical properties;    Product property;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/251/1/012021/pdf
DOI  :  10.1088/1757-899X/251/1/012021

来源: IOP

【 摘 要 】

The paper presents the results of the research on modifications of sand-lime bricks with bentonite additives. The article presents correlations between physico-mechanical properties and a microstructure of traditional silicates and products modified with bentonite. Numerous images of scanning electron microscopy included in the article show the internal structure and phases occurring in both traditional and modified sand-lime products. The addition of bentonite results in a reduction of sand-lime products density and their compressive strength. The modified products achieve lower absorbability than conventional silicates by about 50%. The addition of bentonite changes the structure of pores and their distribution. The modified composition of a traditional silicate product contributed to changing the microstructure of the material (hydrogranates are formed).