E3S Web Conf.
Volume 157, 2020Key Trends in Transportation Innovation (KTTI-2019)
|Number of page(s)||6|
|Section||Energy Efficient Building Design|
|Published online||20 March 2020|
Influence of mixture composition on fresh concrete workability for ballastless track slabs
Emperor Alexander I St. Petersburg State Transport University, Moskovsky pr., 9, SaintPetersburg, 190031, Russia
2 Saint-Petersburg Mining University, 21-st Line V.O., 2, Saint-Petersburg, 199106, Russia
* Corresponding author: email@example.com
There are several factors that affect the fresh concrete workability: water demand and composition of Portland cement, properties of fine and coarse aggregates, presence of superplasticizer and others admixtures, etc. Influence of quantity and fineness of ground quartz additives as well as polycarboxylate-based superplasticizer amount on workability of fresh concrete was studied in the paper. The properties of fresh mixture (slump) and hardened concrete (compressive strength at the age of 24 hours, 28 and 360 days) were estimated. Enhancing the fresh concrete workability using fine ground quartz sand was stated. Savings of superplasticizer per 1 m3 of slab concrete and 1 km of the ballastless track were calculated.
© 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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