JT/T 1211.2-2019 English PDF

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JT/T 1211.2-2019: Rapid repairing material of cement concrete for highway engineering - Part 2: Polymer resin repair material
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Basic data

Standard ID: JT/T 1211.2-2019 (JT/T1211.2-2019)
Description (Translated English): Rapid repairing material of cement concrete for highway engineering - Part 2: Polymer resin repair material
Sector / Industry: Highway & Transportation Industry Standard (Recommended)
Classification of Chinese Standard: P66
Classification of International Standard: 93.080.20
Word Count Estimation: 7,731
Date of Issue: 2019
Date of Implementation: 2019-09-01
Issuing agency(ies): Ministry of Transport
Summary: This standard specifies the classification and code, technical requirements, test methods, inspection rules, and requirements for marking, packaging, transportation and storage of polymer resin repair materials for cement concrete in highway engineering. This standard applies to the production, inspection and use of polymer resin repair materials for cement concrete in highway engineering.

JT/T 1211.2-2019: Rapid repairing material of cement concrete for highway engineering - Part 2: Polymer resin repair material

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Highway engineering-Quick repair materials for cement concrete-Part 2. Polymer resin repair materials)

Contents

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Classification and Code 1 5 Technical requirements 1 6 Test method 2 7 Inspection rules 3 8 Marking, packaging, transportation and storage 4 JT/T 1211. 2-2019

Foreword

JT/T 1211 "Quick Repair Materials for Highway Engineering Cement Concrete" is divided into 2 parts. --- Part 1. Cement-based repair materials; --- Part 2. Polymer resin repair materials. This part is part 2 of JT/T 1211. This section is in accordance with GB/T Draft the rules given in 1-2009. This section is proposed and managed by the National Technical Committee for Traffic Engineering Facilities (Highway) Standardization (SAC/TC 223). This section was drafted by. Highway Research Institute of Ministry of Transport, Hohai University, Jinling Institute of Science and Technology, North China Engineering Design Consulting Co., Ltd. Division, China Jianmei Technology (Beijing) Co., Ltd., Xinjiang Beixin Road and Bridge Group Co., Ltd., Jiangsu Hengyiyuan Engineering Project Management Co., Ltd. Division, Shanghai Puhe Engineering Design Co., Ltd., China Communications Second Public Works Bureau First Engineering Co., Ltd., China Communications Construction Co., Ltd., China Communications Foundation Facilities Maintenance Group Co., Ltd., Inner Mongolia Road and Bridge Group Co., Ltd., Liaoning Engineering University, Jiqing High-speed Railway Co., Ltd. The main drafters of this section. Peng Peng, Liu Ying, Wang Yiliang, Du Tianling, Zhao Haitao, Wang Yan, Zheng Yi, Qin Lixiang, Zhang Guodong, Cai Kaixi, Xiao Zhiqiao, Zhang Yiran, Sun Wencai, Zhang Deming, Sheng Jun, Huang Donghui, Hu Wentao, Yi Fu, Sun Lihui, Li Wenjing, Yu Yongyan, Wang Xinpeng. JT/T 1211. 2-2019 Rapid repair material for highway engineering cement concrete Part 2. Polymer resin repair materials

1 Scope

This part of JT/T 1211 specifies the classification and code, technical requirements, Test methods, inspection rules, and marking, packaging, transportation, and storage requirements. This section applies to the production, inspection and use of polymer resin repair materials for highway engineering cement concrete.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 1767 Test method for cement mortar strength (ISO method) DL/T 5193 Technical Specification for Epoxy Resin Mortar JGJ/T 70 Standard Test Method for Basic Performance of Building Mortar

3 Terms and definitions

The following terms and definitions apply to this document. 3． 1 Polymer resin rapid repair material poller resin reparer material (PRM) It is made of polymer resin, fine aggregate, fillers, additives, etc. in appropriate proportions, and is suitable for rapid highway engineering within 12 hours of open traffic. Repair materials.

4 Classification and code

Polymer resin repair materials are classified into Type I and Type II according to their strength properties.

5 Technical requirements

The performance requirements of polymer resin repair materials shall meet the requirements of Table 1. Table 1 Performance indicators of polymer resin repair materials Item Performance requirements Type Ⅱ 1 curing time (h) ≤12 ≤12 2 Compressive strength (MPa) 12h ≥40 ≥30 1d ≥65 ≥45 7d ≥75 ≥55 JT/T 1211. 2-2019 Table 1 (continued) Item Performance requirements Type Ⅱ 3 Flexural strength (MPa) 12h ≥8. 0 ≥7. 0 1d ≥10. 0 ≥9. 0 7d ≥12. 0 ≥12. 0 4 Bonding strength (MPa) Untreated (1d) ≥2. 5 ≥2. 0 Water immersion ≥2. 0 ≥1. Five Thermal aging ≥1. 5 ≥1. 0 25 freeze-thaw cycles ≥1. 0 ≥0. 8 5 Shrinkage (%) 48h ≤0. 05 ≤0. 05 Note. When measuring the bond strength, the test results are invalid when the failure form is the tensile jig and adhesive.

6 Test method

6. 1 curing time The test piece forming and test method shall be carried out in accordance with the relevant provisions of DL/T 5193. 6. 2 Compressive strength The forming and test method of the test piece shall be carried out in accordance with the relevant regulations of GB/T 1767. 6. 3 Flexural strength The forming and test method of the test piece shall be carried out in accordance with the relevant regulations of GB/T 1767. 6. 4 Bonding strength 6. 4． １ Bonding strength [Untreated (1d)] The formation of the test piece was carried out in accordance with the relevant regulations of JGJ/T 70. The size of the base cement mortar used for the test was 70 mm × 70 mm × 40 mm. With The test method is as follows. a) Determine the 1d tensile bond strength according to the method specified in JGJ/T 70; b) Remove the mold after 12h, stick the drawn joint to the test piece with a suitable high-strength adhesive, and continue to test the test piece under standard test conditions. At 24h, the tensile bond strength at 1d was measured. 6. 4． 2 Bonding strength (soaked in water) The formation of the test piece was carried out in accordance with the relevant regulations of JGJ/T 70. The size of the base cement mortar used for the test was 70 mm × 70 mm × 40 mm. With The test method is as follows. a) The test specimens formed in accordance with JGJ/T 70 shall be cured for 7 days under standard test conditions; b) Then immerse it in water at 23 ° C ± 2 ° C for 6 days, take it out of the water and dry the surface with a cloth, and use a suitable high-strength adhesive Knot pull connector c) After 7h, immerse the test piece in water at 23 ° C ± 2 ° C, remove the test piece after soaking in water for 17h, and measure the tensile bond strength after drying the water stain on the surface. 6. 4． 3 Bonding strength (heat aging) The formation of the test piece was carried out in accordance with the relevant regulations of JGJ/T 70. The size of the base cement mortar used for the test was 70 mm × 70 mm × 40 mm. With JT/T 1211. 2-2019 The test method is as follows. a) The test specimens formed in accordance with JGJ/T 70 shall be cured for 7 days under standard test conditions; b) The test piece is then placed in a 70 ° C ± 2 ° C blast oven for 6 days, removed from the oven, and allowed to air to room temperature; c) Use a suitable high-strength adhesive to adhere the drawn joint to the test piece, and continue to maintain the test piece in the oven under standard test conditions. Twenty-four hours after removal, the tensile bond strength was measured. 6. 4． 4 Bonding strength (25 freeze-thaw cycles) The formation of the test piece was carried out in accordance with the relevant regulations of JGJ/T 70. The size of the base cement mortar used for the test was 70 mm × 70 mm × 40 mm. With Body test method. Cured for 7 days under standard test conditions, and then immersed in water at 23 ° C ± 2 ° C for 1 day. Take out the test piece and perform freeze-thaw cycles. Ring test, each cycle steps are as follows. a) Remove the test piece from the water, dry the surface with a cloth, and keep it at -15 ° C ± 2 ° C for 2h ± 20min; b) immerse the test piece in 23 ° C ± 2 ° C for 2h ± 20min; c) Repeat the cycle 25 times. After the last cycle, place the test piece under standard test conditions for 4h, and bond with suitable high strength. The adhesive is used to bond and pull the joint, and the test piece is further cured under standard test conditions to 14 days, and the tensile bond strength is measured. 6. 5 shrinkage The test piece forming and test method shall be carried out in accordance with the relevant provisions of DL/T 5193.

7 Inspection rules

7. 1 Inspection classification 7. 1． 1 Polymer resin repair material inspection is divided into type inspection and factory inspection. 7. 1． 2 Type inspection shall be carried out in any of the following cases. a) trial testing of new products; b) during normal production, inspection is performed once a year; c) After the formal production, there are changes in processes or raw materials that affect product performance; d) when production is suspended for more than half a year and production is resumed; e) When there is a big difference between the factory test results and the last type test; f) When the state or industry quality and technical supervision department proposes product testing requirements. 7. 2 Inspection items The inspection items shall be implemented in accordance with the provisions of Table 2. Table 2 Inspection items Serial number of inspection items, type inspection, factory inspection, technical requirements, test methods 1 Cure time ＋ ＋ Chapter 5 6. 1

2 Compressive strength

12h + + Chapter 5 6. 2 1d +-Chapter 5 6. 2 7d + + Chapter 5 6. 2

3 Flexural strength

12h + + Chapter 5 6. 3 1d +-Chapter 5 6. 3 7d + + Chapter 5 6. 3 JT/T 1211. 2-2019 Table 2 (continued) Serial number of inspection items, type inspection, factory inspection, technical requirements, test methods

4 Bonding strength

Unprocessed (1d) + + Chapter 5 6. 4． 1 Immersion +-Chapter 5 6. 4． 2 Thermal Aging +-Chapter 5 6. 4． 3 25 freeze-thaw cycles +-Chapter 5 6. 4． 4 5 Shrinkage rate 48h +-Chapter 5 6. Five Note. "+" indicates required items, and "-" indicates selected items. 7. 3 batch rules Every 5t of polymer repair material should be an inspection lot; less than 5t should be an inspection lot. 7. 4 Judgment rules If all items of the factory inspection and type inspection are qualified, the batch of products is judged to be qualified; if one of the indicators does not meet the requirements, It is allowed to double sample in the inspection batch samples for single retest. If all the re-inspections meet the requirements, the product in the inspection batch is judged to be qualified; If one item fails to meet the required requirements, the product in the inspection lot shall be judged as unqualified. 8 Marking, packaging, transportation and storage 8. 1 Sign The product packaging should be marked with the following. a) product name and brand (type) number; b) product mark, component name (multi-component); c) production date or batch number; d) net quality; e) shelf life; f) the name and address of the manufacturer; g) Precautions for storage and transportation. 8. 2 Packaging The manufacturer shall provide the product specification and product certificate with the goods. The product manual should include the use method, storage conditions, and validity of the product. And precautions. 8. ３ Transportation Different types and specifications of products should be stacked separately during transportation, should not be mixed, avoid sunlight and rain, and are strictly prohibited from approaching the source of fire to prevent collision. 8. 4 Storage Storage should be stacked separately, should not be mixed, not exposed to the sun and rain, approaching the source of fire is strictly prohibited, pay attention to ventilation. JT/T 1211. 2-2019 ......

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