Effects of particle size distribution, surface area and chemical composition on Portland cement strength

1995 ◽  
Vol 32 (8) ◽  
pp. A373
Keyword(s):  
Particle Size ◽  
Chemical Composition ◽  
Particle Size Distribution ◽  
Portland Cement ◽  
Size Distribution ◽  
Surface Area ◽  
Cement Strength

Contribution of multivariate analysis to the correlation of some properties of kaolin with its mineralogical and chemical composition

Clay Minerals ◽  
1998 ◽  
Vol 33 (1) ◽  
pp. 65-75 ◽  
Author(s):  
E. Galan ◽  
P. Aparicio ◽  
I. Gonzalez ◽  
A. Miras
Keyword(s):  
Particle Size ◽  
Multivariate Analysis ◽  
Chemical Composition ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Surface Area ◽  
Crystallinity Index ◽  
Nitrogen Adsorption ◽  
Adsorption Method ◽  
Highly Correlated

AbstractAccording to multivariate analysis, the following were established (a) kaolinite crystallinity index (KCI) values determined by XRD are highly correlated to one another and seemingly influenced by kaolin impurities; (b) kaolin minerals are concentrated mainly in the fractions <4 µm; (c) the kaolin surface area as determined by the BET (nitrogen adsorption) method is more markedly affected by kaolin impurities than by kaolin minerals themselves; (d) BET surfaces increase when kaolinite crystallinity decreases; (e) brightness is inversely correlated with kaolin impurities; (f) the more ordered the kaolinite and the greater the proportion in the <4 µm fraction of the kaolin, the greater the brightness; and (g) KCI values are particle size-distribution dependent for sedimentary-residual kaolins. The correlations obtained were better when kaolins were selected according to their origin because the kaolin minerals and their impurities, particle size-distribution and texture were more alike. The industrial properties of kaolin can not be predicted from other basic properties such as mineralogy, KCI, etc., because they are intricately related to one another.

Effect of Micro-Grinding Medium on the Particle Size Distribution and Properties of Portland Cement

2013 ◽  
Vol 805-806 ◽  
pp. 1588-1592
Author(s):  
Bao Guo Ma ◽  
Jing Ran Wang ◽  
Xiang Guo Li ◽  
Jian Huang
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Portland Cement ◽  
Specific Surface ◽  
Size Distribution ◽  
Surface Area ◽  
Specific Surface Area ◽  
Distribution Data ◽  
Cement Particle ◽  
Chemical Shrinkage

The effect of micro-grinding medium on grinding performance of Portland cement, with determining specific surface area, 45um and 80um sieve residue, density, particle size distribution, chemical shrinkage and strength were studied. In this article, the RRBS of grinding of cement particle size distribution data was observed to be very well. When the content of micro-grinding medium is less than 10%, the specific surface area is increased as the ratio of the grinding medium increased. At the same time, the flexural and compressive strength of cement increased as the content increases. The density of cement decreased quite significantly with the content of micro-grinding medium increased. The 80um sieve residue of the cement increases obviously, when the content of micro-grinding medium is more than 10%.

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