At the beginning of corrosion, the interaction between N[H.sup.+.sub.4] and Ca[(OH).sub.2] neutralizes the hardened cement paste, which results in weakening of bond force of the
cement gel and aggravation of S[O.sup.2-.sub.4] corrosion [17].
(Dendrites are the solid phase of the
cement gel and interconnect to provide strength and stiffness against load.) Fibers such as CNTs are linear elements that span randomly between nodes of the dendrite mesh.
It can be partially due to the strengthened cement paste during the evaporation of free water, which leads to greater Van der Waal's forces as a result of the
cement gel layers moving closer to each other [15, 16].
SEM images show that Calcium Hydrate fibers were formed in the vicinity of
cement gel. In addition, etringite and flake-like calcium hydropoxide crystals developed in the microstructure.
For the incus body, the titanium tip of the coupling rod is inserted into a laser-made bony indentation and fixed with ionomeric
cement gel. [6]