The effects of sand and silica fume on the flexural modulus and thermal stability of pitch were investigated mechanically and thermomechanically. Both modulus and softening temperature were increased by sand addition and further increased by the further addition of silica fume, except that an excessive amount of silica fume caused the modulus to decrease. An effective composition involved 29 vol.% sand and 2 vol.% silica fume.
1. McCurrich, L. and Cook, N.R.“Airfield and road pavement use in the UK of high performance coal tar pitch PVC joint sealants, and a comparison of UK and ASTM standards.” Publication SP—American Concrete Institute 70. Publ. by American Concrete Inst., Detroit, 1981; 1:669-689.
2.
2. Spencer, W.F.“Basic considerations for selecting coal tar roofing systems,”Plant Engineering, 1994, 48(11), 49-50.
3.
3. Herje, J.R.“Performance tests of roofing tiles,”Batiment International/Building Research & Practice, 1986, 14(5):301-305.
4.
4. Van Court, D.P.Roofing history survey. 2nd International Conference on Durability of Building Materials and Components, Preprints, Gaithersburg. Publ. by NBS, Washington. 1981, 464-471.
6. Acuna, C., Marzin, R., Hau, J., Rincon, H., Specht, M.I. and De Oteyza, M.“Petroleum and coal tar pitch corrosion evaluation,”Light Metals: Proceedings of Sessions, TMS Annual Meeting, Minerals, Metals and Materials Soc. (TMS), Warrendale. 1998, 741-744.
7.
7. Matzions, P.D., Patrick, J.W. and Walker, A.“Effect of the nature of the matrix precursor coal-tar pitch on crack formation and location in 2-D C/C composites,”Journal of Materials Science Letters, 2000, 19(6):481-483.
8.
8. Kalos, M., Kostal, D. and Janik, M.“Some properties of coal pitch,”KoKs I Khimiya/Coke & Chemistry, 1997, 12:36.
10. Wolsiefer, J. and Morgan, D.R.“Silica fume in shotcrete,”Concrete International: Design & Construction, 1993, 15(4):34-39.
11.
11. Thomas, M.D.A., Shehata, M.H., Shashiprakash, S.G., Hopkins, D.S. and Cail, K.“Use of ternary cementitious systems containing silica fume and fly ash in concrete,”Cement and Concrete Research, 1999, 29(8):1207-1214.
12.
12. Chen, P.W. and Chung, D.D.L.“Carbon fiber reinforced concrete as a smart material capable of non-destructive flaw detection,”Smart Mater. Struct., 1993, 2:22-30.
