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GB/T 36262-2018 English PDF

GB/T 36262-2018_English: PDF (GB/T36262-2018)
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GB/T 36262-2018English150 Add to Cart 0--9 seconds. Auto-delivery Fiber reinforced polymer composite grids for civil engineering Valid GB/T 36262-2018


BASIC DATA
Standard ID GB/T 36262-2018 (GB/T36262-2018)
Description (Translated English) Fiber reinforced polymer composite grids for civil engineering
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q23
Classification of International Standard 83.120
Word Count Estimation 14,168
Date of Issue 2018-06-07
Date of Implementation 2019-01-01
Drafting Organization Southeast University, Jiangsu Greenwood New Material Technology Development Co., Ltd., China Metallurgical Building Research Institute Co., Ltd., Nanjing Product Quality Supervision and Inspection Institute, Hong Kong Polytechnic University, Zhejiang Shijin Basalt Fiber Co., Ltd., Beijing Texiuda Technology Co., Ltd. Company, Tsinghua University, Nanjing Fenghui Composite Material Co., Ltd., Zhejiang University, Nanjing Nortel Composite Material Equipment Manufacturing Co., Ltd., Sichuan Beysite High-tech Co., Ltd.
Administrative Organization National Fiber Reinforced Plastics Standardization Technical Committee (SAC/TC 39)
Proposing organization China Federation of Building Materials
Issuing agency(ies) State Market Supervision Administration, China National Standardization Administration


GB/T 36262-2018 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.120 Q 23 Fiber reinforced polymer composite grids for civil engineering ISSUED ON. JUNE 7, 2018 IMPLEMENTED ON. JANUARY 1, 2019 Issued by. State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of Contents Foreword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 4 4 Classification and labelling ... 5 5 Technical requirements ... 6 8 Marking, packaging, transportation and storage ... 8 Annex A (Normative) Tensile property test method of fiber reinforced polymer composite grids ... 10 Annex B (Normative) Alkali resistance test method of fiber reinforced polymer composite grids ... 14 Fiber reinforced polymer composite grids for civil engineering 1 Scope This Standard specifies the terms and definitions, classification and marking, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of fiber reinforced polymer composite grids for civil engineering. This Standard applies to fiber reinforced polymer composite grids for the reinforcement of existing and new structures of civil engineering (hereinafter referred to as composite grids). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced documents (including all amendments) applies to this document. GB/T 1446, Fiber-reinforced plastics – The generals for determination of properties 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 fiber reinforced polymer composite grids a continuous grid-shaped composite product which is produced with continuous fiber by a certain process, such as pultrusion, pressure forming and vacuum forming, usually in the orthogonal bi-directional 3.2 grid segment c) every 12 months during normal production; d) when the production is resumed after a production halt for more than 1 year; e) when there is any significant difference between the results of an exit-factory inspection and those of the last type test. 7.3 Sampling rules 7.3.1 For appearance inspection and dimensional deviation, use single sampling and take 6 rolls randomly from each batch. 7.3.2 For tensile property and alkali resistance, use double sampling and take 6 rolls randomly each time. 7.4 Determination rules 7.4.1 When single sampling is used for appearance inspection and dimensional deviation, a batch is a pass if all samples taken are as required or only 1 roll is not as required; or else, it is a fail. 7.4.2 When all samples taken for the first time for tensile property and alkali resistance property are as required, then the batch is a pass; and when there are 2 rolls or more are not as required, then it is a fail. When 1 roll is not as required, then a second sampling is carried out, and it is a pass if the total number of samples not as required in two samplings is 1; or else, it is a fail. 8 Marking, packaging, transportation and storage 8.1 The package of products shall be marked clearly with the following content. a) name and address of manufacturer; b) product name, label and trademark; c) date of manufacture, batch number and guarantee period; d) area of product; e) matters needing attention in storage and transportation. 8.2 Packaging Composite grids shall be packaged using strong, flexible packaging materials. Products shall be tied together closely to prevent impact and abrasion. The package shall be accompanied by product compliance certificate. Annex A (Normative) Tensile property test method of fiber reinforced polymer composite grids A.1 Scope This test method specifies the test principle, test equipment, test piece preparation, test conditions, test procedures, calculation and result handling for the tensile property of composite grids. This test method applies to the determination of tensile strength, tensile elasticity modulus and elongation at break of composite grids for civil engineering. A.2 Test principle Apply a tensile load at a constant speed along the axial direction of test pieces until it breaks or achieves the predetermined elongation. A.3 Test equipment A.3.1 Testing machine The relative error of testing machine shall not exceed ± 1%. A.3.2 Strain measurement equipment The relative error of extensometer or strain gage for the measurement of elongation of composite grids shall not exceed ± 1%. A.3.3 Sampling frequency The sampling frequency of data acquisition system shall be less than 1 Hz. A.4 Test piece preparation A.4.1 Test pieces consists of a test part and an anchor part. A.4.2 Test part. take not less than 40 times of grid segment width from test pieces as the measuring length. A.4.3 Anchor part. fastener shall be fit for the geometrical shape of the section cut from composite grids’ test piece, with the single-side anchoring length not less than 300 mm. preferably made of stainless steel; c) the thermostat soaking tank shall be sealed to prevent the evaporation of water in the alkaline solution; d) the temperature control range is 0°C ~ 100°C and the temperature control accuracy is ± 3°C. B.4.2 pH meter pH meter for laboratory use, with the measuring range 0 ~ 14.00 and accuracy 0.01. B.5 Test solution The proportion of test solution is that each 1 L of deionized water is added with 118.5 g of Ca(OH)2, 0.9 g of NaOH and 4.2 g of KOH to prepare an alkaline solution; and the pH of the solution is 12.6 ~ 13.0. The chemical reagents used are all analytically pure. B.6 Test procedures B.6.1 Prepare the alkaline solution for test; fully soak test pieces. B.6.2 Place test pieces in the thermostat soaking tank, with the distance between test pieces, between test pieces and the thermostat soaking tank, and between test pieces and the liquid surface, at least 10 mm. Maintain the temperature of the alkaline solution within (55 ± 3)°C. B.6.3 Soak test pieces in the alkaline for 7 days. During the soaking process, stir the alkaline solution once every 12 h; use a pH meter for determination; record the pH of the liquid; and maintain the pH constant during test. The liquid and test pieces shall be kept in a dark place. B.6.4 After soaking for 7 days, take out test pieces; use clear water to rinse the residual alkaline solution thoroughly on test pieces; wipe them dry and store for 7 days at room temperature; and carry out tensile property test for the soaked composite grids as required in Annex A. B.7 Calculation B.7.1 Load (stress)-strain curve Load (stress)-strain curve is obtained using the date acquired by the data acquisition system. B.7.2 Tensile strength retention rate Calculate tensile strength retention rate in accordance with Formula B.1; take the ......

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