| Issue |
MATEC Web Conf.
Volume 319, 2020
2020 8th Asia Conference on Mechanical and Materials Engineering (ACMME 2020)
|
|
|---|---|---|
| Article Number | 08002 | |
| Number of page(s) | 4 | |
| Section | Concrete Technology | |
| DOI | https://doi.org/10.1051/matecconf/202031908002 | |
| Published online | 10 September 2020 | |
Effects of anti-clay agents on fresh and hardened properties of concrete containing clay
The Key Laboratory of Urban Security and Disaster Engineering, MOE. Beijing University of Technology, 100124, China
* Corresponding author: ali_s.hejazi@emails.bjut.edu.cn
In this paper, four kinds of agents (2000 polyethylene glycol (pg2000), aminosalicylicacid (ASA), saodium alginate (SA), sodium metasilicate anhydrous (SMA)) were investigated as potential anti-clay agents combined with polycarboxylate water reducer (PCE), and the fluidity, compress strength, and flexural strength of cement paste, mortar, and concrete containing aforementioned anti-clay agents were tested. It found that among the tested potential anti-clay agents, PG2000 have performed well. The fluidity of the concrete with PG2000 increased 16mm compared to the control sample. In order to understand the mechanisms underlying this improvement, X-ray Diffraction(XRD) of cement paste was carried. The results show PG2000 has the highest interlayer spacing(d=2.865142nm) compare with control sample(d=2.828410nm) (not added PG2000), which make it more effective on the fluidity of concrete.
© The Authors, published by EDP Sciences, 2020
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