Showing papers on "Silica fume published in 1979"
TL;DR: In this article, the influence of this dust on cement strength and mortarbar expansion is described, and pozzolanic use of silica fume from a ferrosilicon plant now under erection is discussed.
36 citations
01 Jan 1979
TL;DR: In this article, Sand fractions from approx. 175 micron (80 mesh) to 3.2 average micron range were tested and compared with commercial fine silica and silica flour as stabilizers for Portland cement.
Abstract: Sand fractions from approx. 175 micron (80 mesh) to 3.2 average micron range were tested and compared with commercial fine silica and silica flour as stabilizers for Portland cement. The finer fractions, including silica flour, produced lower permeabilities and usually higher strengths. Addition of 35% by wt silica flour of Portland cement is sufficient to stabilize the hydration products of Portland cement under usual geothermal conditions up to 325 C (617 F), the highest temperature in this study. Coarser silica may be used where temperatures are lower, steam or light brines are encounted, or coarser cements with extra silica are used to prepare the slurries. 12 references.
15 citations