Advanced Civil Engineering Materials Based on Inorganic Polymers.

摘要

The present program was undertaken to evaluate cement chemistries more suitable for macrodefect-free cement materials. Therefore, the thrust of this work is oriented to the chemistry of advanced cements. Two strategies are being employed. The first is to modify conventional high alumina and portland cements to develop advanced properties. Such properties in this context include improvement in moisture sensitivity and extension of useful service range to temperatures higher than those tolerated by conventional organic polymers. The second strategy is to evaluate novel chemistries. This has included forming alkali zirconium phosphates at low temperature. This class of materials exhibits zero thermal expansion, is stable to high temperature and therefore may be useful in aerospace applications where dimensional stability is important.