Effect of Fly Ash on Rheological Properties of Magnesium Oxychloride Cement

Effects of aluminum-leached coal fly ash residue on water-resistance, compression strength and efflorescence of MOC cement have been investigated. The results show that the compression strength of MOC cement curried for 28 days increases with the dosage of ACFAR. The water resistance of MOC cement can be improved obviously. This study has proved that aluminum-leached coal fly ash residue can be used as the filling material of MOC cement with high compression strength and good water-resistance.

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Compressive strength of fly ash magnesium oxychloride cement containing granite wastes

Construction and Building Materials ◽

10.1016/j.conbuildmat.2012.06.016 ◽

2013 ◽

Vol 38 ◽

pp. 1-7 ◽

Cited By ~ 82

Author(s):

Ying Li ◽

Hongfa Yu ◽

Lina Zheng ◽

Jing Wen ◽

Chengyou Wu ◽

...

Keyword(s):

Compressive Strength ◽

Fly Ash ◽

Magnesium Oxychloride ◽

Magnesium Oxychloride Cement ◽

Oxychloride Cement

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Influence of Fly Ash on Magnesium Oxychloride Cement Deformation

Materials Science Forum ◽

10.4028/www.scientific.net/msf.817.252 ◽

2015 ◽

Vol 817 ◽

pp. 252-256 ◽

Cited By ~ 1

Author(s):

Jin Mei Dong ◽

Hong Fa Yu ◽

Mei Juan Wang

Keyword(s):

Fly Ash ◽

Inhibition Effect ◽

Phase Crystal ◽

Magnesium Oxychloride ◽

Magnesium Oxychloride Cement ◽

Oxychloride Cement

The inhibition effect of fly ash on the deformation of magnesium oxychloride cement is not obvious. With the increase of fly ash, the deformation of magnesium oxychloride cement decreased at first, and then increased. The smallest deformation is the proportion of FA-35. The fly ash can promote the formation of the 5·1·8 phase crystal and slow the speed of 5·1·8 phase changing into Mg (OH)2. The growing crystals were disordered, like the scattered tree branches. The causes of FA-35 specimen expansion deformation can be explained by the configuration of the crystal.

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MAGNESIUM OXYCHLORIDE CEMENT-BASED COMPOSITES WITH FLY ASH ADMIXTURE

20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Nano, Bio, Green and Space: Technologies for Sustainable Future ◽

10.5593/sgem2020/6.1/s26.051 ◽

2020 ◽

Author(s):

Milena Pavlikova ◽

Adam Pivak ◽

Martina Zaleska ◽

Zbysek Pavlik

Keyword(s):

Fly Ash ◽

Magnesium Oxychloride ◽

Magnesium Oxychloride Cement ◽

Oxychloride Cement

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Modification Research on the Water-Resistance of Magnesium Oxychloride Cement

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.423-426.1027 ◽

2013 ◽

Vol 423-426 ◽

pp. 1027-1030 ◽

Cited By ~ 1

Author(s):

Zi Yao Yuan ◽

Xing Long Liu ◽

Yong Feng Jia ◽

Peng Liu ◽

Ming Chun Li

Keyword(s):

Fly Ash ◽

Phosphoric Acid ◽

Glass Phase ◽

Water Resistance ◽

Dramatic Decrease ◽

Magnesium Oxychloride ◽

Magnesium Oxychloride Cement ◽

Oxychloride Cement

The influences of fly ash and phosphoric acid on water-resistant property and the microstructure of magnesium oxychloride cement (MOC) were investigated in this paper. It is found that the improvement of the water-resistance of the MOC incorporated with phosphoric acid can be attributed to the dramatic decrease in the quantity of crystallization points. In addition, the new Mg2PO4(OH) phase can also prevent the dissolution of 5-phase. And the mechanism of the water-resistance of the MOC mixed with fly ash is due to the Ca2MgSi2O7 phase and the glass phase which are filled into microscopic cracks and skeleton empty.

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