Latex-modified grouts for in-situ stabilization of buried transuranic/mixed waste

Thermal conductivity of cementitious grouts for geothermal heat pumps. Progress report FY 1997

“…The wet-dry cycle tests demonstrated the importance of maximizing the sand content of the grout to reduce susceptibility to cracking. Previous studies (Allan and Kukacka, 1995;1996;Onofrei et, 1992) have shown that crack healing can occur under repeated wet-dry cycles due to formation of CaCO, in cracks. Permeability tests on cracked grout (Allan and Kukacka, 1996) indicate that resistance to the formation of permeable cracks is improved by use of Types II or V cements, or partial replacement of Type I cement with slag or silica fume.…”

“…The fly ash-modified grouts were minimally influenced by the proportion of fly ash (Figure 7). However, it is noted that previous tests at BNL with other fly ashes have shown different results' (Allan, 1996).…”