FDUS EAS 148-6, Cements — Test methods — Part 6: Determination of fineness, 1st edition

来源：epingalert 发布时间：2018-07-09 浏览量：*

通告成员：

Uganda

通告类型：

TBT

通告发布时间：

2018-07-09

评议截止时间：

2018-09-07

通告描述：

This Final Draft Uganda Standard describes three methods for determining the fineness of cement and applies to all the cements defined in EAS 18-1.

The sieving method serves only to demonstrate the presence of coarse cement particles. This method is primarily suited to checking and controlling the production process.

The air –jet sieving method measures the retention on sieving and is suitable for particles which substantially pass a 2.0- mm test sieve. It may be used to determine the particle size distribution of agglomerates of very fine particles. This method may be used with test sieves in a range of aperture sizes, for example 63 μm and 90 μm.

The air permeability method (Blaine) measures the specific surface (mass related surface) by comparison with a reference cement sample. The determination of the specific surface serves primarily to check the consistency of the grinding process of one and the same plant. This method only enables a limited assessment to be made of the properties of the cement in use.

文档编号：

G/TBT/N/UGA/869

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ICS Code：

91.100.10 - Cement. Gypsum. Lime. Mortar

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HS Code：

2523 - Cement, incl. cement clinkers, whether or not coloured

通告目的：

Reducing trade barriers and facilitating trade (TBT)
Harmonization (TBT)

FDUS EAS 148-6, Cements — Test methods — Part 6: Determination of fineness, 1st edition

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