Review Article

Cement Types, Composition, Uses and Advantages of Nanocement, Environmental Impact on Cement Production, and Possible Solutions

Figure 2

Chemical structures of (a) 5,5,6,6-tetrahydroxy-3,3,3,3-tetramethylspiro-bisindane, (b) tetrafluorophthalonitrile, and (c) polycondensate polymer PIM-1 [49].
(a)
(b)
(c)