Recently, I received a customer consultation on Douyin, who wants to test the bending strength of stone, what kind of equipment should I use? In order to meet the testing needs of customers, the company has specially designed a comprehensive test program for them, including testing fixtures and test methods.
Through the comprehensive analysis of stone materials, mechanical properties and testing methods, we are committed to providing a more comprehensive understanding for stone industry practitioners, researchers and professionals in related fields. We will deeply study the determination methods, influencing factors and their significance in practical application of stone flexural strength, in order to provide a scientific basis for stone engineering design and quality control.
First, the test principle.
The principle of stone flexural strength testing is to provide a consistent and repeatable method to accurately assess the flexural strength of stone by recording the bending behavior and breaking point of the sample by applying a flexural load under standard test conditions.
2. Test relevant standards.
Refer to the standard ASTM C880 for testing.
3. Test instruments.
1. Hydraulic universal testing machine.
2. Customized four-point bending fixture.
The fixtures include bearing support blocks to ensure vertical loading of dimensional stone samples. The span length as well as the distance between the load and the support block must be constant at 127 mm range.
Fourth, the test process.
Steps. 1. Preparations.
The test is carried out using a hydraulic universal testing machine.
Custom four-point bending fixtures including bearing support blocks to ensure vertical loading of dimensional stone specimens.
Make sure that the span length of the clamp and the distance between the load and the support block are at 127 mm range.
Steps. 2. Prepare test samples.
The stone sample was sawn and finely ground to size 4" x 1.25" x 15"。
Fine grinding is carried out on the plane where the load is perpendicular and fine sawing is carried out on other planes.
Prepare at least five samples for each specific test condition.
Steps. 3. Set the fixture parameters.
The lower support span is set at 125 inches.
The upper support span is set to 625 inches.
Steps. Fourth, conditioning samples.
Drying conditions: Samples were dried at 140 4° Fahrenheit for 48 h.
Wet conditions: Wet samples were soaked in water at 72 4°F for 48 hours.
Steps. 5. Installation test samples.
Conditioned specimens are mounted on a hydraulic testing machine.
Use a custom-made four-point bending fixture to ensure that the sample is loaded vertically.
Steps. 6. Carry out flexural strength test.
A hydraulic testing machine is used to apply the load and the data from the bending process is recorded.
Maintain the stability of the fixture during the test to ensure that the load is evenly applied to the sample.
Steps. 7. Data analysis and recording.
The results of flexural strength tests are recorded, including the breaking point, load, and deformation data of the sample.
For each test condition, analyze and compare the test results of at least five samples.
Steps. 8. Verification and reporting of results.
Verify the accuracy and repeatability of test results.
Write a test report including test conditions, samples**, test dates, flexural strength data, and any special observations.
The above is the content of the stone bending strength test, I hope it can help you! If you also want to know more about stone flexural strength test methods, test standards, test instruments, testing requirements, calculation formulas, hydraulic universal testing machine verification standards, pointer dial, instructions, verification procedures and working principles, you are welcome to send us private messages and messages, Kezhun measurement and control calculation team will answer for you for free!