GB/T 28629-2024 Active National standards

GB/T 28629-2024 Methods for chemical analysis of free silicon dioxide in cement clinker

GB/T 28629-2024 Methods for chemical analysis of free silicon dioxide in cement clinker

Publish Date: 2024-04-25 Implement Date: 2024-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 28629-2024

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Cement

ICS Name: Cement, gypsum, lime, and mortar

Publish Date: 2024-04-25

Implement Date: 2024-11-01

Pages: 20 pages

Scope

This document describes the chemical analysis methods for determining the free silica in cement clinker, including the hydrofluoric acid treatment method for phosphoric acid decomposition, the silico-molybdenum blue spectrophotometry method for phosphoric acid decomposition, and the potassium fluorosilicate titration method for phosphoric acid decomposition. This document is applicable to the determination of free silica in cement clinker.

Development Information

Word Count: 24 Thousand words Pages: 20 pages

Replace the following standards

GB/T 28629-2012 Methods for chemical analysis of free silicon dioxide for cement clinker

Referenced Standards

GB/T 2007.1-1987 General rules for the sampling and sample preparation of minerals in bulk—Sampling by manual method GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values JJG 196-2006 Working Glass Container

Related Standards

GB/T 2022-1980 Replaced

GB/T 2022-1980 Test method for heat of hydration of cement—Adiabatic method

Publish Date: 1980-09-27

GB/T 177-1985 Abolished

GB/T 177-1985 Test method for strength of hydraulic cement mortar

Publish Date: 1985-06-29

GB/T 6645-1986 Replaced

GB/T 6645-1986 Granulated electric furnace phosphorous slag used for cement production

Publish Date: 1986-07-29

GB/T 7897.1-1987 Replaced

GB/T 7897.1-1987 Test method of mechanical properties of mortar for ferrocement General principle

Publish Date: 1987-06-05

GB/T 7897.2-1987 Replaced

GB/T 7897.2-1987 Test method of mechanical properties of mortar for ferrocement Test of bending strength

Publish Date: 1987-06-05

GB/T 7897.3-1987 Replaced

GB/T 7897.3-1987 Test method of mechanical properties of mortar for ferrocement Test of compressive strength

Publish Date: 1987-06-05