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DL/T 5785-2019: (Hydropower and hydraulic engineering chemical grouting material test procedure)
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DL/T 5785-2019
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Basic data | Standard ID | DL/T 5785-2019 (DL/T5785-2019) | | Description (Translated English) | (Hydropower and hydraulic engineering chemical grouting material test procedure) | | Sector / Industry | Electricity & Power Industry Standard (Recommended) | | Classification of Chinese Standard | P59 | | Word Count Estimation | 78,746 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Regulation (derived from) | Natural Resources Department Announcement No. 7 of 2019 | | Issuing agency(ies) | National Energy Administration | DL/T 5785-2019: (Hydropower and hydraulic engineering chemical grouting material test procedure)---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.
Test code of chemical grouting materials for hydropoweruand water conservancy engineering
ICS 27.140
P 59
Record number. 63143-2018
People's Republic of China Electric Power Industry Standard
P DL/T 5785-2019
Test Regulations of Chemical Grouting Materials for Hydropower and Water Conservancy Engineering
2019-06-04 released
2019-10-01 implementation
Issued by National Energy Administration
Foreword
This regulation is based on the National Energy Administration’s plan to issue the first batch of industry standards (revision) in the energy sector in.2013.
"Notice" (Guoneng Technology [2013] No. 235) requires preparation.
During the compilation process, the editors conducted extensive investigations, collected data, and conducted in-depth researches on hydropower and water conservancy engineering chemistry.
The grouting material test technology has been comprehensively analyzed and studied, and the relevant chemical grouting material test results have been absorbed, and the domestic and foreign
A large number of experimental studies have been carried out on the relevant content of the relevant standards, and the practical experience has been carefully summarized, combined with the scientific research achievements in recent years.
Based on the development of advanced technologies in the industry and the industry, the draft is finalized after review and review on the basis of extensive solicitation of opinions from relevant units and experts.
The main technical content of this regulation includes the grout performance test methods and consolidation properties of chemical grouting materials for hydropower and water conservancy projects
Can test methods.
This regulation was proposed by the China Electricity Council.
This regulation is under the jurisdiction of the Hydropower Construction Standardization Technical Committee of the Electric Power Industry.
The main drafting units of this regulation. Gezhouba Group Test and Inspection Co., Ltd., Yangtze River Water Resources Commission, Yangtze River Academy of Sciences, Hangzhou
Zhou Guodian Dam Safety Engineering Co., Ltd.
Participated in the drafting of this regulation. China Water Resources and Hydropower Eighth Engineering Bureau Co., Ltd., Hunan Hongyu Engineering Group Co., Ltd.,
Guangdong Tieke Grouting Technology Co., Ltd.
The main drafters of this regulation. Wang Wei, Chen Liang, Lin Zhonghua, Feng Jing, Chen Qiao, Wei Tao, Zhang Jie, Jiang Mingqiang, Lu Zhi
Hua, Li Yan, Jiang Dehua, Bin Bin, Zhang Weixin, Wang Xuelong, Li Kaixi, Li Geng, Zhang
Da, Shan Liang, Shu Youliang, Huang Xiaoqian, Huang Zhujin, Zhu Huirong
The main reviewers of this regulation. Mei Jinyu, Gao Xiang, Zhang Hong, Cheng Zhihua, Sun Laicheng, Li Zhigang, Wang Pengyu, Wu Gaojian,
Wu Xu, Wang Jun, Zhong Yanxiang, Yang Tao, He Xiaoxiong, Yao Fuhai, Lin Peng, Zhu Mingxing, Lu
Zhilin, Jia Zhiying, Yin Xianjun, Sun Zhiheng, Wang Yi, Chu Yuexian, Lu Qian
The opinions or suggestions in the implementation of this regulation are fed back to the Standardization Management Center of China Electricity Council (Beijing
No. 1 Ertiao, Baiguang Road, 100761).
Table of contents
1 General...1
2 Terminology...2
3 Basic regulations...3
4 Slurry performance test...4
4.1 Viscosity...4
4.2 Density...5
4.3 Operational time...5
4.4 Gel time...6
4.5 Non-volatile content...7
4.6 Contact angle of glass slide...8
4.7 Water-encapsulation...9
4.8 Water pack volume...10
4.9 Foaming rate...11
5 Consolidation performance test...13
5.1 Bond strength...13
5.2 Compressive strength...14
5.3 Compressive modulus...16
5.4 Tensile strength...17
5.5 Tensile modulus...20
5.6 Elongation at break...22
5.7 Tensile shear strength...23
5.8 Swelling rate in contact with water...24
5.9 The glass capillary's resistance to extrusion failure ratio...
5.10 Permeability coefficient...27
5.11 Compressive strength of solid sand body...30
Appendix A Chemical Grouting Material Test Items and Sampling Quantity Requirements...32
Appendix B List of dynamic viscosity coefficient, viscosity coefficient ratio, and temperature correction value of water...33
Explanation of terms used in this specification...34
List of Reference Standards...35
Article description...36
1 General
1.0.1 In order to standardize the performance test of chemical grouting materials for hydropower and water conservancy projects, this regulation is formulated.
1.0.2 This regulation is applicable to chemical grouting liquids such as epoxy resin, polyurethane, acrylate and water glass in hydropower and water conservancy projects
And the performance test of the consolidated body.
1.0.3 Relevant personnel engaged in chemical grouting material testing shall undergo professional training and assessment, and the assessment shall be qualified.
1.0.4 The performance test of chemical grouting materials for hydropower and water conservancy projects shall not only meet the requirements of this regulation, but also meet the current state
Implement relevant standards.
2 term
2.0.1 operable time
Use a viscometer to measure the viscosity, take the mixing of the components of the chemical grouting material as the starting point for timing, and when the viscosity reaches a certain specified viscosity
When the degree value is the end point, the time interval from the start point to the end point.
2.0.2 Gel time
The time elapsed from the beginning of the mixing of the components of the chemical grouting material to the inability to flow.
2.0.3 contact angle on the slide glass
When chemical grouting material slurry forms droplets on the solid surface and reaches equilibrium, air is used at the intersection of gas, liquid and solid-
The tangent line of the liquid two-phase interface is the angle between the tangent and the solid and liquid two-phase interface.
2.0.4 Water absorption capability
After the water-soluble polyurethane grouting material is mixed with 10 times water, the time it takes for the water to completely form a gel is used for
Characterize the reaction speed of the material.
2.0.5 water absorption amount
After the unit mass of water-soluble polyurethane grouting material is mixed with water, the maximum water consumption that can maintain the gel state is used for
Characterize the ability of a material to wrap water.
2.0.6 Expansion ratio
After the polyurethane grouting material reacts with water, the volume growth rate of the foam-like consolidation formed relative to the original slurry.
2.0.7 water swelling ratio
The volume expansion ratio of the chemical grouting material consolidated body soaked in water within a specified time after physical adsorption of water.
2.0.8 Hydraulic slope against extrusion damage in the capillary
The maximum water pressure per unit length of the cured chemical grouting material without being damaged by extrusion.
3 Basic regulations
3.0.1 The temperature of the standard test environment should be 23℃±2℃, and the relative humidity should be (50±10)%.
3.0.2 The test materials should be placed for no less than 24h under standard test environmental conditions.
3.0.3 The test water should be distilled water.
3.0.4 When preparing the chemical grouting material slurry to be tested, the ratio should be the ratio specified in the product manual;
When there are regulations or when the project has special requirements, the ratio specified by the design or the ratio of special requirements shall also be adopted.
3.0.5 The measuring instruments used in the test shall be calibrated or verified as required.
3.0.6 Sampling should be representative, and the number of samples for each test should be carried out in accordance with Appendix A.
3.0.7 During the test, the test personnel should wear work clothes, protective gloves, glasses, masks and other labor protection equipment.
3.0.8 Abandoned chemical grouting materials should be disposed of in accordance with relevant national regulations and shall not be dumped at will.
4 Slurry performance test
4.1 Viscosity
4.1.1 Test purpose and applicable materials.
1 Test purpose. To determine the viscosity of a single component or mixture of chemical grouting materials, and to characterize the phase of chemical grouting materials.
Close construction performance;
2 Applicable materials. epoxy resin, polyurethane, acrylate and water glass.
4.1.2 The equipment configuration should meet the following requirements.
1 Rotary viscometer. measuring range, should be equipped with No. 0, No. 1, No. 2, No. 3, No. 4
Rotor
2 Constant temperature bath. It can be kept at the specified measuring temperature of 23℃±0.5℃, and the temperature control range is from room temperature to 100℃ in the laboratory.
Fluctuation degree ±0.3℃;
3 Low-type beaker or sample holder. capacity 600mL, outer diameter 90.0 mm±2.0mm, full height 125.0mm±3.0mm,
The minimum wall thickness is 1.3mm;
4 Electronic balance. weighing not less than 1000g, with a sense of 0.1g;
5 Timer. accuracy 1s.
4.1.3 The viscosity determination test should be carried out according to the following steps.
1 In a low-shaped beaker or sample container, prepare 500g slurry according to the sample ratio, and stir evenly;
2 Put the beaker or sample holder containing the sample in a constant temperature bath, and measure with a rotary viscometer within 5 minutes after the sample is prepared
Initial viscosity
3 Choose a suitable rotor, install the rotor on the rotary viscometer, adjust the height of the viscometer, so that the rotor is immersed in the test
Sample until the mark on the rotor is level with the liquid level of the sample;
4 Select the rotation speed of the rotary viscometer, and control the reading at 20%～90% of the maximum range; turn on the rotary viscometer and read
Stable reading
5 Turn off the rotary viscometer. After the rotor of the rotary viscometer stops rotating, turn on the rotary viscometer again for a second time
Measure until the deviation of two consecutive measured values is not more than 3%, and the measured value shall be the average of the two readings;
6 After the test is completed, remove the rotor from the viscometer and clean it;
7 Repeat steps 1~6 for 3 tests;
8 If you need to determine the viscosity of the mixed slurry at any subsequent period of time, you can use the prepared sample to continue the test.
The test time should also be controlled within 5 minutes.
4.1.4 The processing of test results shall be carried out in accordance with the following regulations.
Take the arithmetic average of the 3 measurements as the test result, expressed in mPa·s, accurate to 1 mPa·s. When the viscosity is low
At 30mPa·s, if any one of the measured values differs from the arithmetic mean by more than 10%, the test should be repeated;
At 30mPa·s, if any one of the measured values differs from the arithmetic mean by more than 5%, the test should be repeated.
4.2 Density
4.2.1 Test purpose and applicable materials.
1 Test purpose. to determine the density of a single component or mixed liquid of chemical grouting materials, which can be used as calculation of the amount of grouting material and
Pressure parameters;
2 Applicable materials. epoxy resin, polyurethane, acrylate and water glass.
4.2.2 The equipment configuration should meet the following requirements.
1 Weight cup. capacity 37.00 cm3;
2 Electronic balance. The weighing capacity is not less than.200g, and the sensitivity is 0.001g.
4.2.3 The density determination test should be carried out according to the following steps.
1 Weigh the weight m1 of the clean and dry weight cup;
2 Prepare 60g slurry in the container according to the proportion, and stir evenly;
3 Slowly pour the sample into the weight cup, fill it up and close the lid tightly to keep the overflow opening open and wipe off the overflow;
4 Place the weight cup filled with the sample on the balance and weigh its mass m2;
5 The density test of the slurry should be completed within 5 minutes from the preparation of the sample;
6 After the determination, clean the weight cup with the corresponding volatile solvent;
7 Repeat steps 1~6 for 3 tests.
4.2.4 The processing of test results shall be carried out in accordance with the following regulations.
4.3 Operational time
4.3.1 Test purpose and applicable materials.
1 Test purpose. to determine the time elapsed when the viscosity of the chemical grouting material reaches a certain value, and to provide a basis for construction;
2 Applicable material. epoxy resin.
4.3.2 The equipment configuration shall meet the following requirements.
1 Rotary viscometer. measuring range 0.1 mPa·s ~1×105mPa·s, equipped with No. 0, No. 1, No. 2, No. 3, 4
Rotor
2 Constant temperature bath. It can be kept at the specified measuring temperature of 23℃±0.5℃, and the temperature control range is from room temperature to 100℃ in the laboratory.
Fluctuation degree ±0.3℃;
3 Low-type beaker or sample holder. capacity 600mL, outer diameter 90.0mm±2.0mm, full height 125.0mm±3.0mm,
The minimum wall thickness is 1.3mm;
4 Electronic balance. weighing not less than 1000g, with a sense of 0.1g;
5 Timer. accuracy 1s.
4.3.3 The operable time test shall be carried out according to the following steps.
1 Prepare 500g slurry in a low-shaped beaker or sample holder according to the sample ratio, stir evenly and start the timer at the same time;
2 Put the low-shaped beaker or sample holder containing the sample in a constant temperature bath, and measure the viscosity with a rotary viscometer;
3 Measure the viscosity of the slurry every 5 minutes according to step 4.1.3 of this regulation;
4 When the viscosity reaches the specified value (the epoxy grouting material for concrete cracks is.200mPa·s; the epoxy grouting material for foundation treatment
When the material is 100mPa·s), stop timing and the time indicated by the timer is the operable time;
5 Repeat steps 1 to 4 for 3 tests.
4.3.4 The processing of test results shall be carried out in accordance with the following regulations.
Take the arithmetic average of the 3 measurements as the test result, expressed in min. When any one of the measured value and arithmetic
When the average difference is greater than 5%, the test should be repeated.
4.4 Gel time
4.4.1 Test purpose and applicable materials.
1 Test purpose. to determine the gel time of chemical grouting materials to evaluate the gel curing speed of chemical grouting materials;
2 Applicable materials. epoxy resin, polyurethane, acrylate and water glass.
4.4.2 The equipment configuration shall meet the following requirements.
1 Electronic balance. weighing not less than 500g, with a sense of 0.01g;
2 Timer. accuracy 1s;
3 Glass beaker. 250mL in capacity;
4 Glass rod. 5mm~6mm in diameter.
4.4.3 The gel time determination test should be carried out according to the following steps.
1 Prepare 100g of slurry in a glass beaker according to the sample ratio, stir evenly and start the timer at the same time;
2 During the gel time test of epoxy resin grouting material, the flow state of the slurry should adopt the method of tilting the beaker at different angles
carry out testing. After the slurry is evenly stirred, slowly tilt the beaker every 10 minutes to observe the flow state of the slurry.
When it is in a flowing state, restore the beaker to a horizontal position; when the beaker is tilted about 45° and the slurry cannot flow within 2 minutes,
Continue to tilt the observation angle to about 75°. When the beaker is tilted about 75° and the slurry cannot flow within 2 minutes, the observation angle will be tilted.
The observation angle changes to 90°. When the 90° slurry in the tilted beaker is still unable to flow within 2 minutes, stop the timing and the timer shows
The time is the gel time.
3 When testing the gel time of polyurethane grouting material, use a glass rod to stir the sample and observe the slurries and gel drawing continuously
In some cases, when the slurry is no longer filamentous, stop timing, and the time indicated by the timer is the gel time.
4 In the gel time test of acrylate grouting material and sodium silicate grouting material, the flow state of the slurry should be tilted with the beaker
Methods of testing from different perspectives. After the slurry is evenly stirred, slowly tilt the beaker to continuously observe the flow of the slurry.
When the slurry is in a flowing state, restore the beaker to a horizontal position; when the beaker is tilted 45°, the slurry cannot flow
When the oblique observation angle is changed to 90°, when the slurry is still unable to flow at 90°, stop the timing and the timer
The time shown is the gel time.
5 Various samples should be tested for 3 times, specifically according to the following methods.
1) When conducting the gel time test of epoxy resin grouting material, repeat steps 1 and 2;
2) When conducting the gel time test of polyurethane grouting material, repeat steps 1 and 3;
3) When conducting the gel time test of acrylate grouting material and water glass grouting material, repeat step 1 and step
4.
4.4.4 The processing of test results shall be carried out in accordance with the following regulations.
1 For the gel time test of epoxy resin grouting material, take the arithmetic average of the three measurements as the test result, and take min
Means; when any one of the measured values differs from the arithmetic mean by more than 5%, the test should be repeated.
2 Gel time test of polyurethane grouting material, acrylate grouting material and water glass grouting material, take 3 measurements
The arithmetic mean value of as the test result, expressed in s, accurate to 1s. When the gel time is less than 60s, any one of them is measured
When the difference between the fixed value and the arithmetic mean is greater than 20%, the test should be repeated. When the gel time is greater than 60s, any one of the measurements
When the difference between the fixed value and the arithmetic mean is greater than 10%, the test should be repeated.
4.5 Non-volatile content
4.5.1 Test purpose and applicable materials.
1 Test purpose. To determine the mass percentage of non-volatile substances in a single component of chemical grouting materials, to evaluate material performance
Price provides a reference basis;
2 Applicable material. polyurethane.
4.5.2 The equipment configuration shall meet the following requirements.
1 Electronic balance. weighing not less than.200g, with a sense of 0.001g;
2 Electric heating blast oven. explosion-proof type, the temperature range is laboratory room temperature~200℃, temperature fluctuation ≤±0.5℃;
3 Dryer. built-in color-changing silica gel or anhydrous calcium chloride;
4 Petri dish. 60mm in diameter;
5 Dropping bottle. 30ml capacity.
4.5.3 The test for determination of non-volatile matter content shall be carried out according to the following steps.
1 Weigh the mass m0 of the dried petri dish;
2 Put the sample into a dry drop bottle and weigh its mass m1;
3 Weigh 6g±1g of the sample from the dropper bottle and drop it into the petri dish, and weigh the dropper bottle containing the sample in m2;
4 Put the petri dish with the sample into a blast oven at 105℃±2℃, keep it constant for 3h;
5 Take out the petri dish containing the sample and put it in a desiccator, cool it for 2h under standard test environment conditions, weigh the sample
The mass of the petri dish m3;
6 Repeat steps 1 to 5 for 3 tests.
4.5.4 The processing of test results shall be carried out in accordance with the following provisions.
4.6 Contact angle of glass slide
4.6.1 Test purpose and applicable materials.
1 Test purpose. to determine the contact angle of chemical grouting material droplets on the surface of the glass slide, for evaluating the chemical grouting material
The relative wettability of the solid surface;
2 Applicable material. epoxy resin.
4.6.2 The equipment configuration shall meet the following requirements.
1 Contact angle measuring instrument. The measuring range is 0°~180°, and the accuracy is ±0.1°;
2 Micro sampler. the capacity is 100μL~250μL, and the needle of the sampler should be a flat 0.21mm~0.52mm in diameter.
Head needle, stainless steel needle or PTFE coated needle can be selected;
3 Glass slide. single-head single-sided frosted glass slide, the size should be 76mm×26mm;
4 Beaker. capacity 100mL;
5 Timer. accuracy 1s.
4.6.3 The test for measuring the contact angle of the glass slide shall be carried out according to the following steps.
1 Connect the contact angle measuring instrument to the power source, so that the slide glass faces upward and place it on the sample table of the contact angle measuring instrument;
2 Prepare the slurry according to the sample ratio, and put 80mL of the slurry to be tested in the beaker;
3 Use a micro-injector to take the slurry at about 1/2 of the total liquid depth in the beaker;
4 Squeeze a 3μL±1μL droplet through the micro-injector and hang it on the end of the needle (Figure 4.6.3a), raise the sample table to make
The surface of the glass slide is in contact with the droplet at the end of the needle (Figure 4.6.3b), and the sample stage is moved down to transfer the droplet to the surface of the slide (Figure 4.6.3b).
4.6.3c);
4.6.4 The processing of test results shall be carried out in accordance with the following regulations.
Remove the maximum and minimum values, and take the arithmetic average of the three remaining measured values as the test result, expressed in °, accurate
To 0.1°. When any one of the measured values differs from the arithmetic mean by more than 5%, the test should be repeated.
4.7 Water-encapsulation
4.7.1 Test purpose and applicable materials.
1 Test purpose. To determine the time it takes for the chemical grouting material to react with water to completely form a gel after being mixed with 10 times water
It is used to evaluate the reaction speed of chemical grouting materials when exposed to water;
2 Applicable material. water-soluble polyurethane.
4.7.2 The equipment configuration shall meet the following requirements.
4.7.3 The water-in-encapsulation test shall be carried out according to the following steps.
4.7.4 The processing of test results shall be carried out in accordance with the following regulations.
4.8 Water pack
4.8.1 Test purpose and applicable materials.
1 Test purpose. To determine the maximum water consumption that can maintain the gel state after chemical grouting material is mixed with water for evaluation
Determine the ability of chemical grouting materials to wrap water and water blocking efficiency.
2 Applicable material. water-soluble polyurethane.
4.8.2 The equipment configuration shall meet the following requirements.
1 Electronic balance. weighing not less than 500g, with a sense of 0.01g;
2 Beaker. capacity 50mL, 100mL, 300mL, 500mL;
3 Measuring cylinder. capacity 25mL, 50mL, 250mL, 500mL;
4 Timer. accuracy 1s.
4.8.3 The test for determining the amount of water in the package shall be carried out according to the following steps.
1 Weigh the sample mass m0 in a beaker, and m0 should be 10g;
2 Measure the water with a mass of m0 with a graduated cylinder, pour all into the beaker containing the sample, press the timer, and stir immediately for 10 seconds
After that, let it stand still, and the number of stirring should be 15~20 times;
3 The gel state of the slurry should be tested by tilting the beaker at different angles and observed every 1 minute.
The specific method is as follows.
1) After the slurry is evenly stirred, tilt the beaker 45° to observe whether the white gel in the beaker reacts with water
Whether there is bleeding phenomenon;
2) When the white gel of the 45° tilted beaker does not bleed, the oblique observation angle becomes 90°;
3) When the white gel does not bleed when the beaker is tilted 90°, end the test and re-weigh the sample
And increase the water consumption to continue the next test.
4 Repeat steps 1 to 3 for the water increase test, each time the water consumption is increased by m0 compared to the previous one. When the water increase test appears from
After the slurry is evenly stirred, start to 30 minutes, and when the white gel is still bleeding when the beaker 90° is tilted, stop the test, and
Record the water consumption m at this time;
5 Repeat steps 1 to 4 for 3 sets of tests.
5.3 Compression modulus
5.3.1 Test purpose and applicable materials.
1 Test purpose. to determine the compressive modulus of the chemical grouting material consolidation body to evaluate the compressive deformation performance of the material;
2 Applicable materials. epoxy resin and polyurethane.
5.3.2 The equipment configuration should meet the followin...
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