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GB/T 36134-2018 PDF in English


GB/T 36134-2018 (GB/T36134-2018, GBT 36134-2018, GBT36134-2018)
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GB/T 36134-2018: PDF in English (GBT 36134-2018)

GB/T 36134-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 81.080
Q 40
Monolithic (Unshaped) Refractory Products -
Determination of Resistance to Explosive
Spalling During Heating
(ISO 16334.2013, Monolithic Refractory Products – Determination of
Resistance to Explosive Spalling, MOD)
ISSUED ON. MAY 14, 2018
IMPLEMENTED ON. APRIL 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Principle ... 5
5 Equipment ... 5
6 Specimen ... 5
7 Test Procedures ... 6
8 Test Report ... 7
Appendix A (Informative) Clause Comparison List between this Standard and
ISO 16334.2013 ... 8
Appendix B (Informative) Technical Differences and the Causes between this
Standard and ISO 16334.2013 ... 9
Monolithic (Unshaped) Refractory Products -
Determination of Resistance to Explosive Spalling
During Heating
1 Scope
This Standard specifies the terms and definitions, principle, equipment, specimen, test
procedures and test report for the test method of resistance to explosive spalling of
monolithic (unshaped) refractory products.
This Standard is applicable to the determination of resistance to explosive spalling of
the monolithic (unshaped) refractory products.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 4513.5 Monolithic (Unshaped) Refractory Products - Part 5. Preparation and
Treatment of Test Pieces (GB/T 4513.5-2017, ISO 1927-5.2012, MOD)
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Explosive spalling
The monolithic (unshaped) refractory products are cracked, burst or pulverized during
the rapid heating process due to the failure of immediate discharging of the internal
gas and the internal stress.
3.2 Temperature of anti-explosion
During the anti-explosion test, the specimen does not explode at such temperature,
but explodes at 50°C above this temperature.
number of the anti-explosion tests.
The preparation and maintenance of the specimen shall be carried out as per GB/T
4513.5; the during time shall be 24h or determined through the negotiation of relevant
parties. The specimen shall be sealed after releasing from mold and before entering
into the furnace. The specimens prepared in the same batch shall be tested within 4h
after the end of curing; otherwise they shall be prepared separately.
NOTE. According to the negotiation of the relevant parties, a thermocouple can be fixed in the
inner center of the specimen when preparing the specimen, it can measure the internal
temperature of the sample changing with the time in the anti-explosion test.
7 Test Procedures
7.1 The test furnace shall be preheated to 600°C (or determined through negotiation
of relevant parties); kept for 30min.
7.2 Test two specimens at each temperature; and test one specimen once.
7.3 Put the demolded specimen surface upward; quickly put it into the shield in the test
surface at the set temperature; close the furnace door when timing. The distance
between the specimen and the furnace surface shall be no less than 50mm. After the
furnace temperature returns to the set temperature; the specimen shall be kept at this
temperature for 30min.
7.4 Observe whether the specimen explodes; record the test results of the specimen
according to the following classification.
--- Not exploded. the test specimen has no damage;
--- Exploded. the specimen is cracked (crack width exceeds 2mm, or penetrating
crack), burst or pulverized damage.
7.5 If both specimens are not exploded, then it is considered that there is no explosion
at this temperature; raise the furnace temperature by 50°C; if at least one specimen of
the two ones is exploded, then it is considered that there is explosion at this
temperature; reduce the furnace temperature by 50°C; keep at the newly set
temperature for 30min.
7.6 Repeat the tests of 7.2~7.5 until the anti-explosion temperature is measured or the
furnace temperature reaches 1000°C. The anti-explosion temperature is at 50°C
intervals.
7.7 Turn off the test furnace.
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.