Effect of water-filled macropore inclusions on the hydration of Portland cement detected by thermo gravimetric analysis

Title: Effect of water-filled macropore inclusions on the hydration of Portland cement detected by thermo gravimetric analysis
Author(s): A. Assmann and H. W. Reinhardt
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 108 - 115
Total Pages: 8
Nb references: 12
Language: English

Abstract: The presented work is part of a study with the objective to examine the influence of water released from superabsorbent polymer (SAP) particles on the hydration of Portland cement compared to ordinary added water. Plain cement pastes with w/c ratios of 0.50, 0.42 and 0.36, and two cement pastes with w/c ratios of 0.50 and 0.42 containing macropore inclusions formed by SAP were investigated. The cement paste samples were stored at 20 °C in sealed condition up to an age of 28 days. The hydration was observed in certain time intervals by thermo gravimetric analysis (TGA). The method was used to detect the amount of chemically bound water in the hardening cement pastes e.g. 12, 24, 48, 72 hours after water addition. On the basis of the results, the degree of hydration was calculated. The paper discusses the findings with respect to the volumetric phase distribution of hydrating cement paste adapted from Powers’ model.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00