GB/T 22459.2-2022Refractory mortars - Part 2: Determination of consistency using the reciprocating flow table method (English PDF)

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"

drafted.

This document is part 2 of GB/T 22459 "Refractory Slurry". GB/T 22459 has released the following parts.

--- Part 1.Consistency test method (cone penetration method);

--- Part 2.Consistency test method (jumping table method);

--- Part 3.Test method for bonding time;

--- Part 4.Test method for flexural bond strength at room temperature;

--- Part 5.Test method for particle size distribution (sieve analysis);

--- Part 6.Test method for water content of pre-mixed mud;

--- Part 7.Other performance test methods.

--- Part 8.Bleeding test method.

This document replaces GB/T 22459.2-2008 "Refractory Mud Part 2.Consistency Test Method (Jumping Table Method)". and

Compared with GB/T 22459.2-2008, in addition to structural adjustment and editorial changes, the main technical changes are as follows.

a) Modified normative references (see Chapter 2, Chapter 2 of the.2008 edition);

b) Changed terms and definitions (see Chapter 3, Chapter 3 of the.2008 edition);

c) Changed the principle (see Chapter 4, Chapter 4 of the.2008 edition);

d) Changed the technical requirements for the jumping table and frustoconical mold (see 5.1, 5.2, Figure 1, Figure 2, 5.1, Figure 1 of the.2008 edition);

e) The requirements for mixers have been changed (see 5.3, 5.2 of the.2008 edition);

f) Added technical requirements for vernier calipers or rulers with scales, balances and some equipment (see 5.4, 5.6~5.8);

g) Changed the sampling regulations for refractory mud (see Chapter 6, Chapter 6 of the.2008 edition);

h) Changed the test procedure (see Chapter 7 of the.2008 edition);

i) Added the requirement for rounding of values (see Chapter 8);

j) Changed the test report requirements (see Chapter 9, Chapter 9 of the.2008 edition).

This document is revised and adopted ISO 13765-2.2004 "Refractory Mud Part 2.Consistency Test Method (Jumping Table Method)".

Compared with ISO 13765-2.2004, this document has many adjustments in structure, and the comparison list of structure number changes between the two documents

See Appendix A for the table.

Compared with ISO 13765-2.2004, this document has many technical differences. In the outer margins of the clauses involved, vertical

A straight single line (|) is marked. See Appendix B for a list of these technical differences and their reasons.

Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.

Introduction

Refractory mud is generally used as the joint material of refractory masonry, so that the masonry forms a tight whole to resist the damage of external force and prevent gas,

Intrusion of molten liquid. Masonry joints are usually the weak link of the masonry, and in most cases are damaged before the masonry, so the quality of the refractory mortar is

It is closely related to the overall life of the masonry.

The consistency of refractory mud is an important indicator to characterize its construction performance, which directly affects the construction quality of refractory masonry, and will eventually affect the refractory masonry.

impact on service life and safety. The first 6 parts of GB/T 22459 are modified and adopted ISO 13765, Part 7 of GB/T 22459

Part 8 and ISO 13765 have no correspondence.

GB/T 22459 "Refractory Mud" consists of eight parts.

--- Part 1.Consistency test method (cone penetration method), the purpose is to determine the consistency of refractory mud;

--- Part 2.Consistency test method (jumping table method), the purpose is to determine the consistency of refractory mud;

--- Part 3.Test method for bonding time, the purpose is to determine the time required for the stability of the bonding of refractory mortar joints when building refractory masonry

take time;

--- Part 4.Test method for flexural bonding strength at room temperature, the purpose is to determine the resistance of refractory mortar joints after refractory masonry is built.

folded bond strength;

--- Part 5.Test method for particle size distribution (sieve analysis), the purpose of which is to determine the particle size distribution of refractory mud;

--- Part 6.Test method for water content of pre-mixed mud, the purpose of which is to determine the moisture content of pre-mixed mud;

--- Part 7.Other performance test methods, the purpose is to determine the refractoriness of refractory mud, high temperature flexural bonding strength, room temperature flexural strength

degree, thermal expansion, thermal conductivity, etc.;

--- Part 8.Bleeding test method, the purpose is to determine the bleeding performance of refractory mud at rest or under a certain load.

This document is part 2, and the other 7 parts belong to the test method for refractory mud, which together constitute the test method for refractory mud

system.

refractory mud

Part 2.Consistency test method (jumping table method)

1 Scope

This document specifies the principle, equipment, sampling, test procedure, result calculation and test report of the refractory mud consistency test method.

This document applies to the determination of refractory slurry consistency (jumping table method).

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations

documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to

this document.

GB/T 4513.2 Unshaped Refractories Part 2.Sampling (GB/T 4513.2-2017, ISO 1927-2.2012, IDT)

GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values

GB/T 18930 Refractory Terms (GB/T 18930-2020, ISO 836.2001, MOD)

GB/T 22459.1 Refractory Mud Part 1.Consistency Test Method (Cone Penetration Method) (GB/T 22459.1-2022,

ISO 13765-1.2004, MOD)

3 Terms and Definitions

Terms and definitions defined in GB/T 18930 and GB/T 22459.1 apply to this document.

4 Principles

The diameter of the sample increases under the action of the mechanical vibration of the jumping table, and the consistency of the refractory slurry is expressed as the percentage of the diameter increase.

5 Instruments and equipment

5.1 Jumping table. The structure diagram is shown in Figure 1.The table jumping table can be raised by the motor-driven cam mechanism, and then freely fall by the action of gravity

Fall, and repeatedly do up and down intermittent beating in this way, the jump amplitude is 12.7mm+/-0.1mm (see Figure 1 Index No. 2), and the beating frequency is

15s beat 25 times. The table top is round, with a diameter of 254mm+/-2.7mm. The surface is smooth and smooth, impervious to water, and resistant to sample and environmental erosion.

5.2 Truncated cone die. See Figure 2 for the shape and size. The inner surface of the mold should be smooth and impervious to water, and stainless steel or other resistant samples or environmental erosion should be used.

material production.