Comparative study on different methods of activation of recycled powder grouts Cover

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Comparative study on different methods of activation of recycled powder grouts

Materials Science-Poland

Volume 42 (2024): Issue 4 (December 2024)

By: Shuiping Li, Jian Chen, Jincheng Jiang, Chengxiao Yu, Bin Yuan, Qing Lin and Qisheng Wu

Open Access

|Dec 2024

Figures & Tables

SEM image of RP.

Particle size distribution of RP.

Chemical structure and composition of DEIPA and TIPA.

Influence of RP content on the fluidity of cement-based grouts.

Compressive strength of grouts with different contents of RP.

Influence of activation modes on the fluidity of RP grouts.

Influence of activation modes on the compressive strength of grouts.

XRD patterns of hardened samples of RP activated by different methods at 1 (a) and 28 (b) days.

SEM images of samples S1 (a), S2 (b), S4 (c), S5 (d), S6 (e), S7 (f), S8 (g), and S9 (h) at 1 day.

SEM images of samples S1 (a), S2 (b), S4 (c), S5 (d), S6 (e), S7 (f), S8 (g), and S9 (h) at 28 days.

Mix design and group number of RP grouts_

Sample	w/c	C/S	Cement (%)	RP (%)	P540 (%)	P80 (%)	YH-S (%)	Activator
S1	0.22	1	60	40	0.7	0.1	0.05	—
S2	0.22	1	60	40	0.7	0.1	0.05	1% NaOH
S3	0.22	1	60	40	0.7	0.1	0.05	1% Na₂CO₃
S4	0.22	1	60	40	0.7	0.1	0.05	1% CH
S5	0.22	1	60	40	0.7	0.1	0.05	0.04% DEIPA
S6	0.22	1	60	40	0.7	0.1	0.05	0.25% TIPA
S7	0.22	1	60	40	0.7	0.1	0.05	700°C
S8	0.22	1	60	40	0.7	0.1	0.05	700°C + 1% CH + 0.04% DEIPA
S9	0.22	1	60	40	0.7	0.1	0.05	700°C + 0.04% DEIPA + 0.25% TIPA

Chemical composition of RP and cement (wt%)_

Composition	CaO	Al₂O₃	SiO₂	MgO	Fe₂O₃	Na₂O	TiO₂	SO₃	Loss
RP	40.48	7.6	42.56	2.4	4.4	0.38	0.76	—	1.42
cement	63.71	5.0	20.35	1.37	3.3	0.39	—	2.48	2.6

DOI: https://doi.org/10.2478/msp-2024-0043 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331

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Language: English

Page range: 21 - 33

Submitted on: Sep 18, 2024

Accepted on: Nov 21, 2024

Published on: Dec 14, 2024

Published by: Wroclaw University of Science and Technology

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

Recycled powder,

Activation mode,

Technical properties

Related subjects:

Materials sciences,

Materials sciences, other,

Functional and smart materials,

Materials characterization and properties

© 2024 Shuiping Li, Jian Chen, Jincheng Jiang, Chengxiao Yu, Bin Yuan, Qing Lin, Qisheng Wu, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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