The effect of water immersion on the strength and dimension stability of macrodefect-free (MDF) cement has been studied. The results show that the polymer phase in the MDF matrix is unstable in water. Prolonged immersion resulted in substantial expansion and leaching of the matrix. Microstructural changes were examined by scanning electron microscopy. X-ray diffraction, and infrared spectroscopy. The cause of weakening of the matrix is thought to be the modification of the cement/polymer interface through the hydration of anhydrous grains. Methods of improving the performance of MDF pastes in water have been considered.
|Number of pages||4|
|Journal||Materials Science and Technology|
|Publication status||Published - 1 Dec 1986|
ASJC Scopus subject areas
- Materials Science(all)
- Metals and Alloys