Effects of glass fiber modified with calcium silicate hydrate (C-S-H(I)) reinforced cement

17th IUMRS International Conference in Asia

Xin, M.^1 ; Zhang, L.^1,2 ; Ge, S.^1,3 ; Cheng, X.^1,2

School of Materials Science and Engineering, University of Jinan, Jinan

250022, China^1

Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan

250022, China^2

School of Chemistry and Chemical Engineering, University of Jinan, Jinan

250022, China^3

关键词: Calcium silicate hydrate;    Cement paste;    Curing age;    Fiber reinforced cement;    Fiber volume;    Flexural performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/182/1/012040/pdf
DOI  :  10.1088/1757-899X/182/1/012040

来源: IOP

【 摘 要 】

In this paper, calcium silicate hydrate (C-S-H(I)) and glass fiber modified with C-S-H(I) (SiF) at ambient temperature were synthesized. SiF and untreated fiber (OF) were incorporated into cement paste. Phase composition of C-S-H(I), SiF and OF was characterized by XRD. The surface morphologies were characterized by SEM. Flexural performance of fiber reinforced cement (FRC) at different curing ages was investigated. Results indicated that both SiF and OF could reinforce cement paste. SiF had a more positive effect on improving the flexural performance of FRC than OF. The strength of SiF reinforced cement was 11.48MPa after 28 days curing when fiber volume was 1.0%, 12.55% higher than that of OF reinforced cement. The flexural strength increased with the addition of fiber volume. However, the large dosage of fiber might cause a decrease in flexural strength of FRC.