polyacrylamide induced flocculation of a cement suspension for sale

polyacrylamide induced flocculation of a cement suspension for sale
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  • What is a polyacrylamide flocculant?
  • Polyacrylamides (PAM) produce this type of aggregate and they are widely used on an industrial scale ( Negro et al., 2005b ). The choice of a polymeric flocculant is usually based on empirical data and its optimisation still requires a better knowledge of the flocculation process that takes place.
  • Which polymer is most suitable to induce cement flocculation?
  • Anionic polyacrylamide (A-PAM) is the most suitable to induce cement flocculation because the interactions between Ca 2 + ions and the anionic carboxylic groups of A-PAM are responsible for the interaction between polymer and cement coagula in water saturated in Ca ( OH) 2.
  • How does polyacrylamide affect the bridging mechanism?
  • The effect on the mean chord size, after the first addition of 100 ppm, increased with the molecular weight of the polyacrylamide, which improves the bridging mechanism, and also with the anionic charge, which improves both the patching mechanism and the complex flocculation between new bridges and patches of A-PAM. Fig. 12.
  • How does the size of cement aggregate affect flocculation behaviour?
  • The size of the initial cement aggregates depends on the shearing conditions and this initial size could modify the flocculation behaviour of the flocculant.