Usefulness of porphyry and amphibolites as a component of concrete for airfield pavements

Abstract

Coarse aggregate used as part of cement concrete is of primary significance for the obtained parameters of hardened concrete. In case of concretes intended for airfield pavements, the application of granite grit is recommended. Alternative to this type of aggregate in the form of porphyry and amphibolites aggregate was suggested. In order to assess the suitability of different aggregate types for concrete mixes, their bulk density, absorbability, polishing resistance, abrasion and crushing resistance were determined. Also, the internal structure of the suggested aggregates and its influence on changes of hardened concrete composite structure were subject to the assessment. The influence of aggregate type on the structure of cement matrix and contact areas between the matrix and aggregate grains were specified. The observed changes, in case of the internal structure of concretes based on porphyry and amphibolites aggregates, with reference to granite aggregate, resulted in changes of mechanical and physical parameters. Analyses included the determination of bulk density, absorbability, compression, bending and splitting resistance. According to the obtained laboratory test results, the significant influence of the aggregate type applied to the mix on parameters of hardened concrete, with regard to the application thereof to the airfield pavements was proved.

The Influence of the Aircraft Operating Fluids on the Mechanical Parameters of the Airport Surface Concrete

“…The fine aggregate for the mixes was natural sand washed with a fraction of 0/2 mm, with a density of 2.65 kg/dm 3 . The grain distribution of individual types of aggregates was made according to [27][28][29] and is presented in Figure 6. In order to achieve good homogeneity and workability of the concrete mix, an admixture with strong plasticizing effect was used.…”

“…The fine aggregate for the mixes was natural sand washed with a fraction of 0/2 mm, with a density of 2.65 kg/dm 3 . The grain distribution of individual types of aggregates was made according to [ 27 , 28 , 29 ] and is presented in Figure 6 .…”

“…The fine aggregate for the mixes was natural sand washed with a fraction of 0/2 mm, with a density of 2.65 kg/dm 3 . The grain distribution of individual types of aggregates was made according to [27][28][29] and is presented in Figure 6. In the concrete mixes, coarse aggregate of 2/8 mm and 8/16 mm fractions with a volume density of 2.67 kg/dm 3 were used, derived from deep igneous rocks in the form of granite grits, in accordance with [26].…”

Neural Model of Projecting Compressive Strength of Cement Concrete Intended for Airfield Pavements

“…As a result of own laboratory and field tests (e.g. Linek et al, 2016;Linek, 2017;Linek et al, 2018), the strength of concrete containing various components of diversified contents were determined.…”

Surface Cement Concrete with Reclaimed Asphalt

“…The authors of article [ 15 ] showed that the strength growth pattern of concrete with phyllite was similar to that of concrete with granite; however, this concrete obtained about 20% lower strength result. The paper [ 16 ] presents the possibility of using porphyry and amphibolite aggregate as a replacement for coarse aggregate for airport pavements. On the one hand, the analysis of the research described in [ 17 ] showed that concrete based on limestone and basalt aggregate is characterized by higher strength than concrete with gravel aggregate.…”