Primarily used in road engineering for testing the quality and performance of heated pavement sealants.During sealant production,it can be used for raw material quality control and product performance testing to ensure the sealant meets relevant standards and engineering requirements.

Tensile Strength Testing Machine

Model:LJLMK-1

I. Product Introduction

This product is developed in accordance with the requirements for low-temperature tensile properties of sealants in the transportation industry standard JTGE20-2011"Road Rubber Asphalt Sealant".It also meets all the technical specifications for low-temperature tensile testing in JT/T 740-2015"Heated Road Sealant"and JT/T 969-2015"Road Crack Sealant".The equipment is equipped with an automatically temperature-controlled low-temperature test chamber,which allows for precise setting of the tensile temperature according to test requirements and automatic tensile and tensile length control.

Furthermore,this equipment references and complies with international testing methods such as ASTM D5329—Test Methods for Hot-Applied Sealants and Fillers and ISO 7389—Determination of Elastic Recovery of Sealants,which can meet the international market's testing requirements for the tensile properties and elastic recovery properties of hot-applied sealants and sealing materials,making it suitable for export.The equipment has excellent overall performance and is particularly suitable for quality control and performance evaluation by scientific research institutions,testing organizations,and road sealing material manufacturers.

II. Technical Parameters:

1.Low Temperature Chamber Temperature Range:-50°C--50°C

2.Temperature Control Accuracy:±1°C

3.Tensile Length:100mm

4.Accuracy:0.1mm

5.Tensile Speed:0.05mm/min-300mm/min

6.Voltage:220V

7.Power:2000W

III. Main Structure

1.Main Unit Frame:Typically made of high-strength aluminum alloy or steel,possessing sufficient rigidity and stability to withstand the maximum tensile force during the test,ensuring the accuracy of the test results.

2.Tensile Clamps:Designed according to the shape and size of the sealant specimen,they are generally pneumatic or manual clamping methods that can firmly hold the specimen and ensure that there is no relative slippage between the specimen and the clamp during the tensile process,thus ensuring the reliability of the test data.

3.Heating System:Heating System:Equipped with a heating device to simulate the actual road surface environment,it can uniformly heat the sealant specimen.Electric heating is typically used,transferring heat to the specimen through heating elements(such as heating wires,heating plates,etc.).The heating system is equipped with a temperature control system,precisely controlling the heating temperature;the temperature control accuracy is generally±1℃or higher.

4.Force Measurement System:Employs a high-precision force sensor mounted on the tensile loading mechanism to measure the force applied to the specimen during tensile testing in real time.The force sensor's accuracy is typically within±0.5%FS(full scale),accurately measuring force changes at different stages of tensile testing.

5.Displacement Measurement System:Measures the elongation of the specimen during tensile testing using a displacement sensor.Commonly used displacement sensors include photoelectric encoders and laser displacement sensors,achieving measurement accuracy of±0.01mm or even higher,accurately capturing minute deformations of the specimen.

6.Control System:Composed of a computer and corresponding control software,it enables automated control of the testing process,including setting test parameters(such as tensile speed,heating temperature,test time,etc.),real-time data acquisition and processing,and displaying and printing test results.The control software has a user-friendly interface,is easy to operate,and is easy for users to master.

IV. Performance Characteristics

1.High-Precision Measurement:High-precision force and displacement measurements accurately reflect the elastic tensile properties of the sealant,providing reliable data support for quality control and performance evaluation of road sealants.

2.Simulates Actual Working Conditions:Equipped with a heating function,it can simulate the working state of the sealant under different road surface conditions,making the test results closer to actual use and helping to accurately evaluate the performance of the sealant in real road environment.

3.High Degree of Automation:The control system automates the testing process,reducing human interference and improving testing efficiency and data repeatability.Users only need to set the test parameters,and the testing machine can automatically complete the entire test process and output a test report.

4.Safe and Reliable:The main frame structure is robust and equipped with overload protection,overheat protection,and other safety devices to effectively protect the safety of the testing machine and operators.During the test,if any abnormal situation occurs,the safety devices will automatically activate,stopping the test and preventing equipment damage and accidents.

V. Application Areas

Primarily used in road engineering for testing the quality and performance of heated pavement sealants.During sealant production,it can be used for raw material quality control and product performance testing to ensure the sealant meets relevant standards and engineering requirements.In road construction and maintenance projects,it can be used to evaluate the performance of different brands and models of sealants,providing a basis for selecting suitable sealant materials.It can also be used to study the performance changes of sealants under different temperatures and tensile conditions,providing technical support for the development of pavement sealing technology.