玻璃纤维对磷酸镁水泥砂浆力学性能的增强作用及机理

doi:10.11896/j.issn.1005-023X.2017.024.002

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (647KB)
Export: BibTeX | EndNote (RIS)

Abstract An experimental investigation into the compressive strength, the flexural strength and the water resistance of magnesium phosphate cement (MPC) mortar reinforced by glass fiber was conducted. Four fiber volume fractions of 1.5%, 2.5%, 3%, 3.5% were designed for the experiments. The microstructure, mechanical and water resistance properties of fiber-reinforced MPCs were evaluated with respect to the variance in the fiber volume fraction. The results showed that the glass fibers had more pronounced effects on the flexural strength compared to compressive strength. The optimum volume fraction of glass fiber was reported at 2.5%. Furthermore, the effect of glass fiber on the water resistance of MPC was discussed, and a “reserving” method to resist the strength loss by water was provided. In addition, a possible explanation of the fiber reinforcement mechanism which is in agreement with the experimental results was proposed.

Key words： glass fiber magnesium phosphate cement compressive strength flexural strength water resistance

Published: 08 May 2018

CLC number:

TU528.2

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	FANG Yuan
	CHEN Bing

Cite this article:

FANG Yuan,CHEN Bing. The Enhancement and Mechanism of Glass Fiber on Mechanical Properties of Magnesium Phosphate Cement Mortar[J]. Materials Reports, 2017, 31(24): 6-9.

URL:

http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.024.002 OR http://www.mater-rep.com/EN/Y2017/V31/I24/6

1 Qiao F, Chau C K, Li Z. Property evaluation of magnesium phosphate cement mortar as patch repair material[J]. Constr Build Mater, 2010, 24(5):695.
2 Li Y, Lin H, Hejazi S M A S, et al. The effect of low temperature phase change material of hydrated salt on the performance of magnesium phosphate cement[J]. Constr Build Mater, 2017,149:272.
3 Li J, Zhang W, Cao Y. Laboratory evaluation of magnesium phosphate cement paste and mortar for rapid repair of cement concrete pavement[J]. Constr Build Mater, 2014,58(4):122.
4 Zhou H, Agarwal A K, Goel V K, et al. Microwave assisted preparation of magnesium phosphate cement (MPC) for orthopedic applications: A novel solution to the exothermicity problem[J]. Mater Sci Eng C, 2013,33(7):4288.
5 Formosa J, Lacasta A M, Navarro A, et al. Magnesium phosphate cements formulated with a low-grade MgO by-product: Physico-mechanical and durability aspects[J]. Constr Build Mater, 2015,91:150.
6 Fan S, Chen B. Experimental study of phosphate salts influencing properties of magnesium phosphate cement[J]. Constr Build Mater, 2014,65(9):480.
7 Buj I, Torras J, Casellas D, et al. Effect of heavy metals and water content on the strength of magnesium phosphate cements[J]. J Hazard Mater, 2009,170(1):345.
8 Lu X, Chen B. Experimental study of magnesium phosphate cements modified by metakaolin[J]. Constr Build Mater, 2016,123:719.
9 Gardner L J, Bernal S A, Walling S A, et al. Characterisation of magnesium potassium phosphate cements blended with fly ash and ground granulated blast furnace slag[J]. Cem Concr Res, 2015,74:78.
10Tan Y, Yu H, Li Y, et al. The effect of slag on the properties of magnesium potassium phosphate cement[J]. Constr Build Mater, 2016,126:313.
11Sarkar A K. Phosphate cement-based fast-setting binders[J]. Am Ceram Soc Bull, 1990,69(2):234.
12Li D X, Li P X, Feng C H. Research on water resistance of magnesium phosphate cement[J]. J Build Mater, 2009,12(5):505.
13Zhang G, Li G, He T. Effects of sulphoaluminate cement on the strength and water stability of magnesium potassium phosphate cement[J]. Constr Build Mater, 2017,132:335.
14Choi Y, Yuan R L. Experimental relationship between splitting tensile strength and compressive strength of GFRC and PFRC[J]. Cem Concr Res, 2005,35(8):1587.
15Kizilkanat A B, Kabay N, Akyüncü V, et al. Mechanical properties and fracture behavior of basalt and glass fiber reinforced concrete: An experimental study[J]. Constr Build Mater, 2015,100:218.
16Bai G Q, Dong J W. Discussion on the mechanism of the modification PPF influencing the compressive strength of the concrete[J]. Jilin Water Resources, 2005(6):1(in Chinese).
白国庆, 董建伟. 改性聚丙烯纤维影响混凝土抗压强度的机理初探[J]. 吉林水利, 2005(6):1.
17Mestres G, Ginebra M P. Novel magnesium phosphate cements with high early strength and antibacterial properties[J]. Acta Biomater, 2011,7(4):1853.
18Yoo D Y, Kim S, Park G J, et al. Effects of fiber shape, aspect ratio, and volume fraction on flexural behavior of ultra-high-performance fiber-reinforced cement composites[J]. Compos Struct, 2017,174:375.
19Ren J, Zhao Y N, Zhang M. Interface of fiber-reinforced ceramic matrix composites and the development of toughening mechanism[J]. Ind Technol Vocational Education, 2013(1):3(in Chinese).
任江, 赵英娜, 张萌. 纤维增强陶瓷基复合材料界面及增韧机制的进展[J]. 工业技术与职业教育, 2013(1):3.
20Yu B W, Geng C, Zhou M, et al. Impact toughness of polypropylene/glass fiber composites: Interplay between intrinsic toughening and extrinsic toughening[J]. Composites Part B, 2016,92:413.