Influence of Cellulose Ether on Mechanical and Workability Properties of Lining Concrete

doi:10.16552/j.cnki.issn1001-1625.2025.0968

Abstract

Abstract:

In this paper， the applicability of hydroxypropyl methyl cellulose ether （abbreviated as cellulose ether ） in large-flow lining concrete was studied， and its influence on the fresh mixing properties， rheological properties and compressive strength of concrete was evaluated. The microscopic mechanism was revealed by means of TGA-DTG， SEM and nanoindentation. The results show that the thickening effect of cellulose ether leads to the decrease of slump and expansion of lining concrete， but effectively inhibits the time loss of lining concrete. The time loss of slump and expansion can be reduced by 75.0% and 66.7% respectively when the cellulose ether content is 0.12% （mass fraction）， and the anti-segregation performance of lining concrete is improved. Cellulosic ether improves the anti-flowability of lining concrete， makes it more difficult to shear deformation， and shows stronger thixotropy and water retention capacity. The incorporation of cellulose ether has a positive effect on the compressive strength of lining concrete. The addition of 0.03%~0.12% cellulose ether can increase the 28 d compressive strength of lining concrete by 7.6%~23.6%. In addition， cellulose ether improves the hydration degree of cement， increases the content of hydration products， makes the microstructure of the sample surface denser， and increases the content of low density and high density calcium silicate hydrate （C-S-H） gel. Therefore， the comprehensive performance of lining concrete is improved.

Key words: lining concrete, hydroxypropyl methyl cellulose ether, fresh mixing property, rheological property, compressive strength

CLC Number:

TU528

WANG Jiefang, XU Dejin, LI Sheng, REN Wanli, CHEN Peiyuan. Influence of Cellulose Ether on Mechanical and Workability Properties of Lining Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(4): 1175-1183.

Figures/Tables 10

References 26

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Material	Mass fraction/%
Material	SiO₂	CaO	Fe₂O₃	Al₂O₃	MgO	K₂O	SO₃	Other
Cement	25.22	53.21	4.03	5.61	3.84	0.80	0.81	6.48
Fly ash	59.34	3.36	3.81	25.17	1.12	1.11	2.01	4.08
Expansive agent	26.83	27.21	2.80	22.03	1.35	0.75	17.25	1.78

Material	Mass fraction/%
Material	SiO₂	CaO	Fe₂O₃	Al₂O₃	MgO	K₂O	SO₃	Other
Cement	25.22	53.21	4.03	5.61	3.84	0.80	0.81	6.48
Fly ash	59.34	3.36	3.81	25.17	1.12	1.11	2.01	4.08
Expansive agent	26.83	27.21	2.80	22.03	1.35	0.75	17.25	1.78

Sample No.	Mix proportion/（kg·m^-3）
Sample No.	Water	Cement	Fly ash	Sand	5~<10 mm stone	10~20 mm stone	Expansive agent	HPMC	Water-reducing agent	Air-entraining agent
CC0	166	332	83	764	423	631	33	0	4.03	0.13
CC1	166	332	83	764	423	631	33	0.13	4.03	0.13
CC2	166	332	83	764	423	631	33	0.22	4.03	0.13
CC3	166	332	83	764	423	631	33	0.31	4.03	0.13
CC4	166	332	83	764	423	631	33	0.40	4.03	0.13
CC5	166	332	83	764	423	631	33	0.49	4.03	0.13

Sample No.	Mix proportion/（kg·m^-3）
Sample No.	Water	Cement	Fly ash	Sand	5~<10 mm stone	10~20 mm stone	Expansive agent	HPMC	Water-reducing agent	Air-entraining agent
CC0	166	332	83	764	423	631	33	0	4.03	0.13
CC1	166	332	83	764	423	631	33	0.13	4.03	0.13
CC2	166	332	83	764	423	631	33	0.22	4.03	0.13
CC3	166	332	83	764	423	631	33	0.31	4.03	0.13
CC4	166	332	83	764	423	631	33	0.40	4.03	0.13
CC5	166	332	83	764	423	631	33	0.49	4.03	0.13

Sample No.	Slump/mm	Flow/mm	Inverted slump cone emptying time/s	Slump after 1 h/mm	Flow after 1 h/mm
CC0	255	560	5.9	235	545
CC1	250	530	7.2	235	520
CC2	240	515	9.8	230	505
CC3	240	500	13.1	230	490
CC4	235	480	17.2	225	470
CC5	230	460	20.5	225	455