Low Shrinkage Cement Concrete Intended for Airfield Pavements

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

土木建筑工程

Malgorzata, Linek^1

Kielce University of Technology, Tysiclecia Pastwa Polskiego Street 7, Kielce

25-314, Poland^1

关键词: Airfield constructions;    Compression strength;    Concrete composites;    Construction operations;    Hardened concrete;    Influence parameter;    Internal structure;    Rheological deformation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/245/3/032032/pdf
DOI  :  10.1088/1757-899X/245/3/032032

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The work concerns the issue of hardened concrete parameters improvement intended for airfield pavements. Factors which have direct or indirect influence on rheological deformation size were of particular interest. The aim of lab testing was to select concrete mixture ratio which would make hardened concrete less susceptible to influence of basic operating factors. Analyses included two research groups. External and internal factors were selected. They influence parameters of hardened cement concrete by increasing rheological deformations. Research referred to innovative cement concrete intended for airfield pavements. Due to construction operation, the research considered the influence of weather conditions and forced thermal loads intensifying concrete stress. Fresh concrete mixture parameters were tested and basic parameters of hardened concrete were defined (density, absorbability, compression strength, tensile strength). Influence of the following factors on rheological deformation value was also analysed. Based on obtained test results, it has been discovered that innovative concrete, made on the basis of modifier, which changes internal structure of concrete composite, has definitely lower values of rheological deformation. Observed changes of microstructure, in connection with reduced deformation values allowed to reach the conclusion regarding advantageous characteristic features of the newly designed cement concrete. Applying such concrete for airfield construction may contribute to extension of its operation without malfunction and the increase of its general service life.