Polymeric additive for strength, deformability, and toughness enhancement of cemetitious materials and composites

摘要

Methods are generally provided for forming a polymer-cement composite. In one embodiment of the method, a plurality of dopamine monomers is dispersed in a buffer solution. Polymerization of the dopamine monomers can then be initiated, and a cement-sand mixture can be added to the buffer solution to form a composite mixture. Finally, the composite mixture can be cured to form a polymer-cement composite. Polymer-cement composites are also generally provided that, in one embodiment, include cement, sand, and poly(dopamine), with the polymer-cement composite having a compressive strength of 8000 psi.

主权项

1. A method of forming a polymer-cement composite, the method comprising:
diluting a plurality of dopamine monomers in a buffer solution, wherein the buffer solution has an alkaline condition so as to initiate polymerization of the dopamine monomers; adding a cement-sand mixture to the buffer solution to form a composite mixture with the buffer solution remaining in an alkaline condition; and curing the composite mixture to form a polymer-cement composite, wherein the polymer-cement composite comprises poly(dopamine).