Blaine fineness

Blaine fineness

The fineness of a powdered material, such as cement, as determined by the Blaine apparatus; usually expressed as a surface area in square centimeters per gram.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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The product is processed in Prime, Preferred and Extra Fine grades of these respective median particle size and Blaine fineness profiles: 15 to 24 [micro]m, 300 to 500 [m.sup.2]/kg; 8 to 13 [micro]m, 500 to 700 [m.sup.2]/kg; and 3 to 5 [micro]m, 700 to 1,000 [m.sup.2]/kg.
Cement with a density of 3.15 g/[cm.sup.3] was used in this study, and the Blaine fineness for FC, OPC, and CC is given in Table 2.
The Blaine fineness or energy consumption (Ec) is set constant for the experiments.
Glycol and amine-based grinding aids were used in the study, and all grindings were realized for the fixed Blaine fineness. The results showed that cement mixtures ground in laboratory exhibited lightly reduction in water demand compared to those ground in an industrial tube mill.
Precision scales, a laboratory-scale crusher, a laboratory mill, a mortar mixer, Blaine fineness test equipment, Vicat test equipment (manual and automatic), molds, an X-ray fluorimeter for the X-ray fluorescence (XRF) analysis, a fusion machine, and a platinum crucible were used equipment in the experiments.
Average Blaine fineness of modern cement ranges from 3,000 to 5,000 cm2/g (300 to 500 m2/kg).
According to the company, the complex houses vertical roller mills that enables it to attain a maximum level of disintegration, grinding down to 4500-6000 Blaine fineness and ensuring cement strength and hardening rate.
A decline in the hydration level and compressive strength could be expected in concretes produced using cements with a Blaine fineness (Blaine surface area) below the standards.
First, Blaine fineness of the cements produced was defined.
Blaine fineness of the cement samples were defined as part of the experimental study.
According to ANOVA shown in Table 3, parameters affecting the Blaine fineness were explored having identified their levels of impact.
The coal bottom ash was ground in a ball mill up to a Blaine fineness of 3,463 [m.sup.2]/kg, similar to that of the Portland cement (5-8% residue on 45 [micro]m sieve).