| Issue |
MATEC Web Conf.
Volume 322, 2020
MATBUD’2020 – Scientific-Technical Conference: E-mobility, Sustainable Materials and Technologies
|
|
|---|---|---|
| Article Number | 01040 | |
| Number of page(s) | 8 | |
| Section | E-mobility, Sustainable Materials and Technologies | |
| DOI | https://doi.org/10.1051/matecconf/202032201040 | |
| Published online | 14 October 2020 | |
The influence of superplasticizer and shrinkage reducing admixture type on air-content and related properties of HPSCC
Silesian University of Technology, Faculty of Building Engineering, Department of Building Processes and Building Physics, Akademicka 5 str., 44-100 Gliwice, Poland
* Corresponding author: beata.lazniewska@polsl.pl
Theoretically, high-performance concrete with w/c ratio about 0.30 and w/b about 0.28 should have low porosity, low water permeability and high strength. The purpose of this study was to examine the influence of the superplasticizers( with and without air-entraining effect) and shrinkage reducing admixture based on a high molecular weight basis alcohol amount on the air-content, compressive strength, shrink and resistance to water penetration of high-performance self-compacting concrete (HPSCC). The test results have shown that despite the low water content, concrete modified with inadequately selected SP and high amount of SRA has a high porosity and low strength and water permeability. The types of superplasticizers and amount of SRA are significant due to porosity parameters, compressive strength and water-permeability of HPSCC. The water permeability and compressive strength of HPSCC depending on the effects of amount of SRA admixtures on the volume of pores in HPSCC. Moreover, shrinkage of incidental air-entrained concrete, despite its lower endurance, after 28 days of hardening it is smaller than non-aerated concrete.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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