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GB 26541-2011 English PDF

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GB 26541-2011: [GB/T 26541-2011] Autoclaved fly ash perforated brick
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GB 26541-2011English389 Add to Cart 4 days [Need to translate] [GB/T 26541-2011] Autoclaved fly ash perforated brick Valid GB 26541-2011

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Basic data

Standard ID GB 26541-2011 (GB26541-2011)
Description (Translated English) [GB/T 26541-2011] Autoclaved fly ash perforated brick
Sector / Industry National Standard
Classification of Chinese Standard Q15
Classification of International Standard 91.060.10
Word Count Estimation 15,122
Date of Issue 2011-06-16
Date of Implementation 2012-04-01
Quoted Standard GB 175; GB/T 2542; GB/T 4111; GB 6566; GB/T 18968; JC/T 409; JC/T 621
Regulation (derived from) Announcement of Newly Approved National Standards No. 9 of 2011
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Chinese standard specifies the autoclaved fly ash brick terms and definitions, size, grade and markings, general requirements, technical requirements, test methods, inspection rules, product certification, stacking and transport. This standard applies to industrial and civil use autoclaved fly ash brick load-bearing structure (hereinafter referred to as brick).

GB 26541-2011: [GB/T 26541-2011] Autoclaved fly ash perforated brick

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Autoclaved fly ash perforated brick ICS 91.060.10 Q15 National Standards of People's Republic of China Autoclaved fly ash perforated brick Issued on. 2011-06-16 2012-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 size, grade and mark 1 General provisions 2 5 6 2 Technical Requirements 7 Test Method 3 8 Inspection Rule 4 9 product certification, stacking and transport 6 Appendix A (normative) Test Method for Compressive Strength 7 Appendix B (normative) Test Method 9 carbonation coefficient

Foreword

Chapter 6 of this standard are mandatory, others are recommended. This standard is prepared in accordance with GB/T 1.1-2009 given rules. 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. This standard is drafted by. Henan Building Materials Research and Design Institute Co., Ltd., Luoyang, China Metallurgical Heavy Machinery Co., Ltd. Participated in the drafting of this standard. energy-saving Dragon (Tianjin) Machinery Manufacturing Co., Ltd., Fujian Haiyuan Automatic Machinery Co., Ltd. Henan Fuyuan new ash Development Co., Ltd, China Building Block Association, Zhengzhou Zheng Xing Building Material Co., Ltd. The main drafters of this standard. Chen Hongjun, Chensheng Qiang, Zhang Yanan, Zhang Lei, Zeng Pei tree, Zhangfeng Zhi, Li Kun then, Du Jiandong, Worth a Textual, Li Jian. Autoclaved fly ash perforated brick

1 Scope

This standard specifies the autoclaved fly ash perforated brick terms and definitions, size, grade and mark a general rule, technical requirements, test methods, Inspection rules, product certification, stacking and transport. This standard applies to industrial and civil construction of load-bearing structure with autoclaved fly ash perforated brick (hereinafter referred to as porous bricks).

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. GB 175 Common Portland Cement Test methods for wall GB/T 2542 puzzle GB/T 4111 Test methods for small concrete hollow block GB 6566 building materials radionuclide limits GB/T 18968 wall material terms JC/T 409 silicate building products using fly ash JC/T 621 with lime silicate building products

3 Terms and Definitions

GB/T 18968 and established the following terms and definitions apply to this standard. Fly ash, lime (or calcium carbide slag) as the main raw material, gypsum and other additives can be mixed with the right amount and other aggregates, the billets, pressed Molding, high-pressure steam curing made of brick, codenamed AFPB. 4 size, grade and mark 4.1 Specifications The outlook for perforated brick hexahedral right angle, the length, width, height should meet the requirements of Table 1. Table 1 Dimensions in millimeters Length (L) Width (B) Height (H) 360,330,290,240,190,140 240,190,115,90 115,90 Note. Other sizes after consultation by both parties, such as the construction of a thin mortar joint, the relevant size can be adjusted accordingly. 4.2 rating Press strength into MU15, MU20, MU25 three levels. 4.3 mark 4.3.1 porous brick by product code (AFPB), size, strength grade, standard number of sequence tags. 4.3.2 tag example Size is 240mm × 115mm × 90mm, perforated brick strength class tag example MU15 as follows. AFPB 240mm × 115mm × 90mm MU15 GB 26541

5 General Provisions

5.1 raw materials 5.1.1 Fly shall comply with JC/T 409's. 5.1.2 quicklime shall comply with JC/T 621's. 5.1.3 Other materials Shall comply with the relevant requirements of the standard, the relevant test should be done before the application of non-standard materials, meet the requirements before use. 5.2 hole 5.2.1 The hole should be built to withstand the pressure in the direction consistent with the brick. 5.2.2 Shop pulp surface should be blind or semi-blind holes.

6 Technical Requirements

6.1 appearance quality and size deviation Appearance quality and size deviation should meet the requirements of Table 2. Table 2 appearance quality and dimension deviation in millimeters Name of Project Specifications Appearance Quality Missing edge off angle The number should be less than (a) 2 Maximum three directions projection size should not exceed 15 Crack crack extending projection size should not exceed a total of 20 Bend should be less than 1 Spall allowed Size deviation Length 2, -1 Width 2, -1 Height ± 2 6.2 porosity Porosity of not less than 25% and not more than 35%. 6.3 intensity level Intensity level should be in accordance with Table 3. Table 3 intensity level megapascals power level Compressive strength and flexural strength The average of five monolithic ≥ ≥ minimum average of five monolithic minimum ≥ ≥ MU15 15.0 12.0 3.8 3.0 MU20 20.0 16.0 5.0 4.0 MU25 25.0 20.0 6.3 5.0 6.4 frost resistance Frost resistance shall conform to Table 4. Table 4 frost resistance Antifreeze mass loss rate of the use of regional indicators /% compressive strength loss rate /% Subtropical region D15 Hot summer and cold winter area D25 Cold regions D35 Cold area D50 ≤5 ≤25 6.5 linear drying shrinkage Linear drying shrinkage should not be greater than 0.50mm/m. 6.6 carbonation coefficient Carbonation coefficient should be not less than 0.85. 6.7 Water absorption Water absorption should be less than 20%. 6.8 Limit of radionuclides Radionuclide limits shall comply with the provisions of GB 6566.

7 Test methods

7.1 appearance quality and size deviation Appearance quality and dimension deviation test methods according to GB/T 2542 carried out. 7.2 porosity Porosity test methods according to GB/T 2542 carried out. 7.3 intensity level Standard Test Method for Compressive Strength according to Appendix A of flexural strength test method according to GB/T 2542 carried out. 7.4 frost resistance Frost resistance test method according to GB/T 4111 carried out, wherein the compressive strength test method in Appendix A be. 7.5 linear drying shrinkage Linear drying shrinkage test methods according to GB/T 4111 carried out, wherein a handheld gauge strain gauge is 150mm. 7.6 carbonation coefficient Carbonation coefficient test methods according to Annex B of. 7.7 Water absorption Water absorption test methods according to GB/T 4111 carried out. 7.8 Limit of radionuclides Radionuclide limits test methods according to GB 6566 carried out.

8 Inspection Rules

8.1 Inspection classification Inspection is divided into the factory inspection and type testing. 8.1.1 factory inspection items include. appearance quality, dimensional variation and intensity level. 8.1.2 Type inspection items include all the technical requirements of the project. When one of the following circumstances, the need for the product type test. a) new plant trial to identify stereotypes; b) such as raw materials, technology, and other major changes occurred after the official production, which may affect product performance; c) Normal production, every six months should be conducted; d) Discontinued for three months or more, the production recovery; e) factory inspection results are quite different when the last type inspection. 8.2 Batch rules In the same batch of raw material, the same production technology, the same specifications, the same intensity level and the same age every 100,000 perforated brick As a group, according to a number less than 100,000 dollars. 8.3 Sampling rules Test sample 8.3.1 appearance quality and dimension deviation extracted by random sampling from each batch of test products, test samples of other items Products by random sampling method from the appearance of quality and size deviation inspection sample extraction. 8.3.2 the number of samples in Table 5 were. Table 5 Sample Number of Units blocks Test items Number of samples (H/B) ≥0.6 (H/B) < 0.6 Appearance quality and size deviation 100 (n1 = n2 = 50) Porosity 33 Flexural strength of 55 Compressive strength 510 Water absorption 33 Linear drying shrinkage 33 Frost Resistance 1020 Carbonation coefficient 1222 Radionuclide limited 33 NOTE. autoclaved fly ash perforated brick under actual state of pressure height (H) and the minimum horizontal dimension (B) ratio, that is, the aspect ratio (H/B). 8.4 determine the rules 8.4.1 appearance quality and size deviation Appearance quality and size deviation using the second sampling plan. First, extract the first sample (n1 = 50), in accordance with the technical requirements specified in Table 2 For visual inspection of quality and size deviation, number of rejects as d1. d1≤5, the judge appearance quality and size deviation qualified; d1≥9, the judge appearance quality and size bias failure; d1> 5, and d1 < 9, the need for a second sample (n2 = 50) tested, number of rejects as d2. (D1 d2) ≤12, the judge appearance quality and size deviation qualified; (D1 d2) ≥13, the judge appearance quality and size deviation failed. 8.4.2 porosity Porosity determination when compliance with the provisions of 6.2 qualified; otherwise, the contractor failed. 8.4.3 Strength Ratings Intensity level in line with eligibility determination when specified in Table 3; otherwise, the contractor failed. 8.4.4 frost resistance Frost resistance in line with eligibility determination Table 4; otherwise, the contractor failed. 8.4.5 linear drying shrinkage Linear drying shrinkage value in line with the provisions of 6.5 sentenced qualified; otherwise, the contractor failed. 8.4.6 carbonation coefficient Sentenced qualified carbonization coefficient in line with the provisions of 6.6; otherwise, the contractor failed. 8.4.7 Water absorption Eligible water absorption when sentenced in line with the provisions of 6.7; otherwise, the contractor failed. 8.4.8 radionuclide limited Sentenced qualified radionuclide limits in line with the provisions of 6.8; otherwise, the contractor failed. 8.4.9 overall judgment When the test results are in line with Chapter 6 of the corresponding technical requirements, this batch of qualified products; otherwise, the contractor failed. 9 product certification, stacking and transport 9.1 porous brick age of less than 7 days can not leave the factory. 9.2 porous brick factory, product certification should be provided, including. a) the name and trademark; b) batch number and quantity; c) labeling of products and date of manufacture; d) inspectors signature. 9.3 should be porous brick size, age, intensity level were stacked in batches can not be mixed. 9.4 porous brick handling, non-collision, Throwing, should be light yard light, prohibit tipping dump. 9.5 porous brick stacking, transport and construction, should be a reliable measure of the rain.

Appendix A

(Normative) Standard Test Method for Compressive Strength A.1 Equipment A.1.1 Material Testing Machine Indication error testing machine should be less than 1% of its expected range selection should enable the specimen failure load falls on the full scale 20% to 80%. A.1.2 Specimen preparation platform Specimen preparation platform should be flat level, flatness within its scope the longitudinal direction should be less than 0.1mm, available in metal or other material Make, plane size should be not less than 440mm × 240mm. A.1.3 Level Level specifications for 250mm ~ 400mm. A.1.4 right angle on foot Right angle on foot should end length not less than 120mm, indexing is 1mm. A.1.5 Steel ruler Steel ruler specifications for 400mm, indexing is 1mm. A.2 specimen A.2.1 Number of specimens Autoclaved fly ash perforated brick compressive strength of five specimens. A.2.2 Measure Steel ruler to measure the size of each sample were measured width of the specimen (B) and length (L) in the middle on both sides of the sample, averaged, Accurate to 1mm; sample height (H) should take two values measured with two longer sides (L) at the middle, take the average to the nearest 1mm. A.2.3 Preparation of test pieces Calculation of the aspect ratio (H/B). A.2.3.1 (H/B) Preparation of test piece ≥0.6 Take five whole brick in water (20 ± 5) ℃ after 24h immersion removed with a damp cloth to wipe the surface of the water, as the compressive strength of the specimen. A.2.3.2 (H/B) Preparation of test pieces < 0.6 Take stacking block method for producing the compressive strength of the specimen. GB 175 used in line with the provisions of 42.5 ordinary portland cement and adhesive mortar preparation, cement and sand mass ratio of sand 1.3, water-cement ratio is not more than 0.5. The same batch, same size, same pore structure autoclaved fly ash perforated brick two samples, using an adhesive material paste them in to sit Shop pulp surface and overlapping surfaces are bonded together. When bonding, required level, and at right angles to regulate on foot, in order to ensure that at least four sides of the sample Two adjacent side surfaces is flat. Samples after bonding should be met. --- Adhesive layer thickness ≤3mm; --- Two holes substantially aligned with the sample. The specimen is placed in a test chamber preparation (20 ± 5) ℃ conservation of 72h, then placed in water (20 ± 5) ℃ soaking 24h after taking Out with a damp cloth to wipe the surface of the water, as the compressive strength of the specimen. A.3 Test procedure A.3.1 The test pieces on the plate under the test machine, try to ensure that the center of gravity coincides with the testing machine platen center of the specimen. Note. For pass respectively symmetrical to the length (L) and width (B) of the center line of the test piece, the center of gravity and centroid coincide; for asymmetric pass the specimen in the specimen bearing Pressure surface underlying a diameter of 10mm, freely rolling round bar, respectively, to identify long (L) and width (B) of the balance shaft (center axis), is the intersection of two axes The center of gravity. A.3.2 loading test machine should be evenly smooth, shock or vibration should not occur. Loading rate to 4kN/s ~ 6kN/s is appropriate, until specimen break Bad date, record the maximum failure load P. A.4 Calculation and evaluation of results Specimen A.4.1 (H/B) sample preparation ≥0.6, and the pressure receiving surface of the specimen length (L) and width (B), according to A.2.2 value. A.4.2 (H/B) < 0.6 specimen sample preparation, the pressure receiving surface of the specimen length (L) and width (B), according to A.2.2 maximum value. A.4.3 compressive strength of the specimen by the formula (A.1) calculation, accurate to 0.01MPa. R = PLB (A.1) Where. --- R & lt specimen compressive strength in megapascals (MPa); P --- failure load, in Newtons (N); Length L --- surface pressure in millimeters (mm); B --- width of the receiving surface, in millimeters (mm). A.4.4 arithmetic mean of the test results in five test pieces minimum compressive strength of monolithic and said accurate to 0.1MPa.

Appendix B

(Normative) Carbonation coefficient test method B.1 equipment B.1.1 compressive strength test equipment with A.1. B.1.2 carbonization chamber Volume put at least more than one set of specimens. Environmental chamber conditions. volume of carbon dioxide at a concentration of (20 ± 3)%, relative humidity (70 ± 5)%, a temperature of (20 ± 5) ℃. B.2 Chemicals Concentration of 1% phenolphthalein ethanol solution, with a concentration of 70% ethanol formulation. B.3 Specimen Number of aspect ratio (H/B) ≥0.6 to two groups of 12 samples. A group of five was on a test piece; a group of seven carbide specimens, which 2 test for carbonation. Aspect ratio (H/B) < 0.6 number of samples for the two groups of 22. A group of 10 for the test of member; a group of 12 specimens carbide, which The two used to test the carbonation. B.4 Test procedure B.4.1 carbide test sample into the carbonization chamber carbonization test, the sample spacing should not be less than 20mm; compressive strength of comparative samples put Set of environmental conditions. relative humidity of (70 ± 5)%, temperature (20 ± 5) ℃. After B.4.2 carbonation 7d, the same day will be a test case of carbonized samples split at the end of about 50mm, the mass concentration of 1% phenol Phthalocyanine ethanol carbonation depth examination, when the test sample was not the center of the red cross section, both the test sample has been completely carbonized, the carbonized think tank All samples have been ended all carbonation, carbonation test; if the test sample cross-sectional center was red, the test sample is not yet fully carbonized, should continue into the Carbonization experiment until the end 28d carbonation test. All samples B.4.3 which has been completely carbonized or carbonized 28d has not yet fully carbonized, and the compressive strength of the comparative sample in Appendix A press feed Preparation of specimen row, conservation and compressive strength tests. B.5 Calculation Results Carbonation coefficient of autoclaved fly ash perforated brick according to formula (B.1) calculated to the nearest 0.01. Kc = RcR (B.1) Where. Kc --- autoclaved fly ash perforated brick carbonation coefficient; The arithmetic mean of the compressive strength after Rc --- 5 Ge carbide specimens, in megapascals (MPa); R --- 5 Ge contrast test pieces of the arithmetic mean of the compressive strength, in megapascals (MPa).

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