Valid

GB 26538-2011Fired heat preservation brick and block (English PDF)

烧结保温砖和保温砌块

Preview PDF

This is a limited preview

Buy now to download the full PDF (11 pages)

Need quotation for your management?

Get a formal quotation for GB 26538-2011 in 30 minutes.

Issued by

Standardization Administration of China

Level / Type

National · Mandatory

Issue date

June 16, 2011

Implementation date

April 1, 2012

Scope

GB 26538-2011 is the English-translated version of 烧结保温砖和保温砌块.

GB 26538-2011 — This standard specifies the terms and definitions Sintering insulation brick and block insulation, product classification, technical requirements, test methods, inspection rules, marking Chi, packaging, transport and storage.

This standard applies to clay, shale or coal gangue, fly ash, sludge and other solid waste as the main raw material, or the addition of a porous wood Solid or porous material made of thin-walled calcined is mainly used for building envelope insulation bricks and blocks (hereinafter referred to as the average brick and blocks).

Found what you need?

Document preview — GB 26538-2011

National Standard of the People's Republic of China

ICS: 91.100.10
Classification: Q 15

Issued by: Standardization Administration of China

Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Product Category
5 2 Technical Requirements
6 Test methods
7 7 inspection rules
8 Signs, packaging, transportation and storage
Division of Annex A (informative) weathered zone

Foreword

This standard is prepared in accordance with GB/T 1.1-2009 given rules.

Chapter 5 of this standard are mandatory, others are recommended.

The standard proposed by China Building Materials Federation.

This standard by the national wall, roof and road construction materials Standardization Technical Committee (SAC/TC285) with centralized.

1 Scope

This standard specifies the terms and definitions Sintering insulation brick and block insulation, product classification, technical requirements, test methods, inspection rules, marking Chi, packaging, transport and storage.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

Test methods for wall GB/T 2542 puzzle GB 6566 building materials radionuclide limits GB/T 13475 adiabatic steady heat transfer properties - Calibrated and guarded hot box GB/T 18968 wall material terms JC/T 466 Wall bricks inspection rules

3 Terms and Definitions

GB/T 18968 and JC/T 466 defined in the following terms and definitions apply to this document.

Porogen hole-makingmaterial Roasting process from combustion or pyrolysis gas released material, or pore structure in the article itself may be formed of different pore diameters, such as sludge, various residues, sawdust, fly ash floating beads, foam beads, limestone, crushed straw, straw, expanded perlite, expanded vermiculite, Shredding ribs, rice husks, worn tires, diatomaceous earth, fuller's earth, etc.

Sintering insulation brick firedheatpreservationbrick Mostly rectangular shape hexahedral by roasting mainly used for building envelope insulation bricks.

Sintering insulation block firedheatpreservationblock Mostly rectangular shape hexahedral, there are a variety of shaped by roasting mainly used for building envelope thermal insulation blocks, puzzle Block series main specifications of length, width or height, respectively, for one or more larger than 365mm, 240mm or 115mm. But highly not more than six times the length or width, the length does not exceed three times the height.

Less brick underfirebrick Failing to reach the sintering temperature or sintering temperature holding time is not enough internal defects caused by brick and block.

Crisp brick Due to damp, rain and the formation of internal defects such as delamination caused by the sound of the finished product when it is struck brick cloudy, dull, mute, or simply unable to pay Sound or surface flaking brick or block.

4 Products

4.1 Category

4.1.1 Divided by the main raw material

Press the main raw material into clay insulation bricks and insulation block (NB), shale insulation tiles and insulation block (YB), gangue insulation tiles and insulation Block (MB), fly ash bricks and insulation block (FB), mud bricks and insulation block (YNB), insulation bricks and other solid waste Insulation block (QGB ).

4.1.2 Press sintering process and method masonry points

a) finely treatment process used in thin masonry mortar joint, fit without mortar joint sintering insulation bricks and insulation block (A Class);

Masonry b) Process without a fine in the ordinary brick mortar joints and sintering heat insulation block (class B).

4.2 Specifications

4.2.1 brick and block outlook for rectangular hexahedron, its length, width and height dimensions shall meet the following requirements in millimeters.

Classification length, width or height A 490,360 (359,365), 300,250 (249,248), 200,100 B 390,290,240,190,180 (175), 140,115,90,53

4.2.2 Other sizes are determined by supply and demand sides negotiated.

4.3 Rating

4.3.1 The intensity level is divided into MU15.0, MU10.0, MU7.5, MU5.0, MU3.5.

4.3.2 density level is divided into 700, 800, 900, 1000.

4.3.3 heat transfer coefficient K value divided by ten quality 2.00,1.50,1.35,1.00,0.90,0.80,0.70,0.60,0.50,0.40 grade.

4.4 Product Marking

Brick and masonry products marked by product name, type, size, density level, strength level, the heat transfer coefficient and the standard numbering sequence to write.

Example 1.

Size 240mm × 115mm × 53mm, 900 density levels, strength grade 7.5, the heat transfer coefficient of 1.00, Class B insulation brick shale, mark

Example 2.

Size 490mm × 360mm × 200mm, 800 density levels, strength grade 3.5, the heat transfer coefficient of 0.50, A Class mud blocks, mark it as.

5 Technical requirements

5.1 Size deviation

Size deviation should meet the requirements of Table 1.

Table 1 size deviation in millimeters

size

A Class B

The average deviation of the average deviation of <= Sample Sample Sample Sample poor poor <= > 300 ± 2.5 5.0 ± 3.0 7.0 > 200 ~ 300 ± 2.0 4.0 ± 2.5 6.0 100 ~ 200 ± 1.5 3.0 ± 2.0 5.0 30 3 vertical difference <=4 Non-through crack length (1) large surface width direction and extending the length of the strip surface (2) length of the large surface of the longitudinal direction or the horizontal direction of the strip surface <=100 <=120 Through the crack length (1) large surface width direction and extending the length of the strip surface (2) length of the wall, the rib longitudinal direction, a width direction and in the horizontal direction, <=40 <=40

6 Ribs, the inner wall of the incomplete length <=40

5.3 intensity level

Intensity should be in accordance with Table 3.

Table 3 intensity level megapascals

power level

Compressive strength the average compressive strength f>= delta<=0.21 coefficient of variation coefficient of variation delta > 0.21 Strength standard value fk>= Monolithic minimum compressive Intensity values fmin>= Density levels range /(Kg/m3) MU15.0 15.0 10.0 12.0 MU10.0 10.0 7.0 8.0 MU7.5 7.5 5.0 5.8 MU5.0 5.0 3.5 4.0 <=1000 MU3.5 3.5 2.5 2.8 <=800 5.4 density levels Density levels shall conform to Table 4.

Table 4 density levels in kilograms per cubic meter

The average density of density levels 5 700 <=700 800 701 to 800 900 801 to 900 1000 901 and 1000

5.5 Pan-cream

Each brick and block allowed medium pan-cream.

5.6 Lime Burst

Each brick and masonry shall comply with the following provisions.

a) the greatest damage dimension greater than 2mm and less than or equal to the burst area of 10mm, each brick and masonry not more than 15;

b) the greatest damage is greater than the size of 10mm burst area is not allowed.

5.7 Water absorption each brick and block absorption averages should meet the requirements of Table 5.

Table 5 Water absorption%

Category absorption

NB, YB, MB <=20.0

FB, YNB, QGB <=24.0

Note 1. The incorporation of fly ash (by volume) of less than 30% can not be determined in accordance with the provisions of FB.

Note 2. the addition of a porous material forming micropores brick and block, water absorption is not limited.

5.8 weathering properties 5.8.1 division of weathering area, see Annex A.

5.8.2 severely weathered zone areas 1,2,3,4,5 and silt, other solid waste as the main raw material is formed pores or the addition of a porous material Bricks and blocks shall be freeze-thaw test, weathering properties and other parts of brick blocks can not meet the freeze-thaw test specified in Table 6, otherwise should Freezing and thawing test.

Table 6 weathering properties

classification

Saturation coefficient <= Noncritical weathered severe weathering zone area the average single monolithic block Max Avg Max NB FB 0.85 0.87 0.88 0.90 YB MB 0.74 0.77 0.78 0.80 5.8.3 frost resistance shall be in accordance with Table 7.

Table 7% frost resistance

Freezing conditions index mass loss rate after freezing and thawing test each brick or block Subtropical region D15 Hot summer and cold winter area D25 Cold regions D35 Cold area D50 <=5 (1) allowed stratification, peel, missing edge off angle and other frozen phenomenon.

(2) After freezing crack length of not more than 4,5 Table 2 items Provisions.

5.9 heat transfer coefficient Heat transfer coefficient should meet the requirements in Table 8.

Table 8 grade heat transfer coefficient in watts per square meter Kelvin

Found grade single sample a range of heat transfer coefficient of heat transfer coefficient K value 2.00 1.51 ~ 2.00 1.50 1.36 ~ 1.50 1.35 1.01 ~ 1.35 1.00 0.91 ~ 1.00 0.90 0.81 ~ 0.90 0.80 0.71 ~ 0.80 0.70 0.61 0.70 0.60 0.51 ~ 0.60 0.50 0.41 ~ 0.50 0.40 0.31 0.40 5.10 radionuclide limited Radionuclide limits shall comply with the provisions of GB 6566.

5.11 Less brick, brick Crisp They Qian products are not allowed in the brick, brick crisp.

6 Test methods

6.1 Size deviation

Test sample number 20, the method according to GB/T 2542 regulations. Wherein each size measuring less than 0.5mm by 0.5mm meter. Sample average deviation is the arithmetic average of 20 in the same direction of the sample 40 to measure the size of its nominal size minus the difference between samples extremely the difference is 20 sample sampling in the same direction 40 Measurements in the difference between the maximum and minimum measured value of the measured value.

6.2 Appearance quality

6.2.1 Vertical difference

The angle formed between brick and block each surface to be measured is not equal to the vertical difference of 90 °. Squares meet the accuracy level.

1 --- Squares;

2 --- vertical difference;

3 --- bricks or blocks.

Vertical difference measurement methods 1 Other projects inspected according to GB/T 2542 provisions 6.2.2 The appearance of mass.

6.3 Strength

6.3.1 Specimen production requirements

Specimens produced by GB/T 2542 provisions, the actual use of the pressure receiving surface of the bearing surface.

6.3.2 Strength coefficient of variation, standard deviation

Intensity variation coefficient delta, standard deviation S were calculated according to equation (1), (2).

delta = S

S = 19sum

(Fi-f) 2 (2)

Where.

delta --- brick and block strength coefficient of variation, accurate to 0.01;

S --- 10 the compressive strength of standard specimens difference in megapascals (MPa), accurate to 0.01;

f --- 10 Kuai sample mean compressive strength, in megapascals (MPa), accurate to 0.1;

fi --- monolithic samples measured compressive strength value, in megapascals (MPa), to the nearest 0.1.

6.3.3 Calculation and evaluation of results

6.3.3.1 Average - standard value for Assessment

When the intensity of the coefficient of variation delta<=0.21, according to the average compressive strength in Table 3, the strength of the standard value assessment brick and masonry strength class.

Sample size n = 10 strength standard value according to equation (3) calculation.

fk = f-1.8S (3)

Where.

fk --- strength standard value, in megapascals (MPa), to the nearest 0.1.

6.3.3.2 Average - minimum assessment method

Intensity variation coefficient delta > 0.21, according to the average compressive strength in Table 3, a single block of the minimum compressive strength and strength assessment brick blocks, etc.

Stage, single-block minimum compressive strength values are accurate to 0.1MPa.

6.4 Density, pan-cream and lime burst

Density, pan-cream and lime burst test according to GB/T 2542 regulations.

And saturated water absorption coefficient of 6.5 and saturated water absorption coefficient test according to GB/T 2542 provisions, boiling water absorption to 3h five samples boiled water absorption arithmetic average Value represents the saturation coefficient arithmetic mean of five samples represent.

6.6 Antifreeze Test

Frost resistance test method according to GB/T 2542 regulations. Evaluation of results in mass loss rate and the appearance of a single piece of sample failure phenomena FIG.

6.7 Heat transfer coefficient

Heat transfer coefficient of the sample prepared according to GB/T 2542 provisions, according to GB/T 13475 regulations, the test piece in hot-box calibration or guarded hot box Internal installation, measuring and calculation results in the specimen indicates the heat transfer coefficient.

6.8 Limit of radionuclides

Radionuclide limited test according to GB 6566 regulations.

6.9 Less brick, brick Crisp

Number of test samples according to GB/T 2542 provisions visual inspection, by visual, percussion and scratches methods for testing.

7 Inspection rules

7.1 Inspection classification

Product testing and factory inspection sub-type test.

7.1.1 Factory inspection

7.1.1.1 Products manufactured must be factory inspection. Products by the factory before the factory inspection.

7.1.1.2 Factory inspection items include size deviation, appearance quality, intensity level, density levels and under the brick, brick crisp.

7.1.2 Type inspection

7.1.2.1 Type test items include all items required by this standard.

7.1.2.2 any of the following circumstances, should be type tested.

A) After the formal production, raw materials, technology and so there is a greater change that may affect product performance;

b) The new plant trial stereotypes inspection;

c) Normal production, every six months, the heat transfer coefficient, radionuclide detection limit once a year;

d) factory inspection results are quite different and the last type test results.

7.2 Batch

Constitute principles and batch size of the inspection lot according to JC/T 466 requirements. 35 000 - 150 000 as a group, by a lack of 35000 Batch count.

7.3 Sampling

7.3.1 appearance quality and less brick, brick crisp test sample using random sampling method to extract the product stack in each test batch.

Samples 7.3.2 Other inspection items using random sampling method from the appearance of the quality of the test sample batches after passing the extract.

7.3.3 the number of samples in Table 9.

Table 9. Number of Units sampling blocks

The number of samples test item number

1 Appearance quality 50 (n1 = n2 = 50)

2 Less brick, brick crisp 50 (n1 = n2 = 50) 3 dimensional deviation 20

4 Strength 10

Density 5 5

Pan-cream 5 6

7 Lime Burst 5

8 Water absorption and saturation coefficient 5

Antifreeze 9 5

Heat transfer coefficient of not less than 10 blocks 1.44m2 masonry wall 11 radionuclide limited 3 7.4 determine the rules 7.4.1 size deviation Size deviation should be consistent with the corresponding level specified in Table 1. Otherwise, the contractor failed.

7.4.2 appearance quality Appearance quality using JC/T 466 secondary sampling plan, based on the quality indicators specified in Table 2, and check out where the number of non-conforming product d1, press the following rules to determine.

d1<=7, the appearance of quality standards;

d1>=11, the appearance of substandard quality;

d1> 7, and d1 Appendix A (Informative) Weathered zone divided A.1 weathered zone divided by weathering index.

A.2 weathering index is about to happen temperature fell to negative from positive temperature rise to positive or negative temperature average number of days per year with a year from the date of cancellation until frost the total amount of rainfall during the date of the loss of frost (in mm) of the average value of the product.

A.3 weathering index greater than or equal to 12,700 serious weathered zone, weathering index of less than 12 700 non-severe weathering zone. National weathered zone

Table 8 division.

A.4 around if reliable data, weathering index can also be calculated dividing the weathering zone in the region.

Table A.1 weathering zoning

Noncritical weathered severe weathering zone area 1. Heilongjiang Province 2. Jilin Province 3. Liaoning Province 4. Inner Mongolia Autonomous Region 5. The Xinjiang Uygur Autonomous Region 6. Ningxia Hui Autonomous Region 7. Gansu Province 8. Qinghai

9 Shaanxi Province

10 Shanxi Province

11 Hebei

12 Beijing

13 Tianjin

1. Shandong

2. Henan

3. Anhui

4. Jiangsu Province

5. Hubei

6. Jiangxi

7. Zhejiang

8. Sichuan

9. Guizhou Province

10. Hunan Province

11. Fujian

12. Taiwan Province

13. Guangdong

14 Guangxi Zhuang Autonomous Region

15 Hainan

16 Yunnan

17 Tibet Autonomous Region

18 Shanghai

19 Chongqing

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 11 pages — is available in the English PDF.

Referenced standards

Normative references

How to Download GB 26538-2011

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.