Influence of Cements Containing Calcareous Fly Ash as a Main Component Properties of Fresh Cement Mixtures

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium - WMCAUS

土木建筑工程

Golaszewski, Jacek^1 ; Kostrzanowska-Siedlarz, Aleksandra^1 ; Ponikiewski, Tomasz^1 ; Miera, Patrycja^1

Silesian University of Technology, ul. Akademicka 5, Gliwice

44-100, Poland^1

关键词: Calcareous fly ashes;    Cement and concretes;    Component properties;    Environment protection;    Good compatibility;    Plastic shrinkage;    Rheological property;    Technological properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/245/2/022099/pdf
DOI  :  10.1088/1757-899X/245/2/022099

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The main goal of presented research was to examine usability of cements containing calcareous fly ash (W) from technological point of view. In the paper the results of tests concerning the influence of CEM II and CEM IV cements containing fly ash (W) on rheological properties, air content, setting times and plastic shrinkage of mortars are presented and discussed. Moreover, compatibility of plasticizers with cements containing fly ash (W) was also studied. Additionally, setting time and hydration heat of cements containing calcareous fly ash (W) were determined. In a broader aspect, the research contributes to promulgation of the possibility of using calcareous fly ash (W) in cement and concrete technology, what greatly benefits the environment protection (utilization of waste fly ash). Calcareous fly ash can be used successfully as the main component of cement. Cements produced by blending with processed fly ash or cements produced by interginding are characterized by acceptable technological properties. In respect to CEM I cements, cements containing calcareous fly ash worsen workability, decrease air content, delay setting time of mixtures. Cements with calcareous fly ash show good compatibility with plasticizers.