Do you know about three sets of 10 piece rapid freeze-thaw testing machines for concrete?

KDR-V3 type 3-group 10 piece rapid freeze-thaw testing machine for concreteExecution standard:

GB/T50081-2002 "Standard Test Method for Mechanical Properties of Ordinary Concrete"

GB/T50082-2009 "Test Method for Long term Performance and Durability of Ordinary Concrete"

JGJ55-2000 "Design Specification for Mix Proportion of Ordinary Concrete"

JTJ053-4 "Test Code for Cement Concrete in Highway Engineering"

JTGE30-2005 "Test Code for Cement and Cement Concrete in Highway Engineering"

National Electric Power Industry Standard DL/T5150-2001 "Test Code for Hydraulic Concrete"

SL352-2006 Test Code for Hydraulic Concrete

JG/243-2009 "Concrete Frost Resistance Test Equipment"

JGJ/T193-2009 "Standard for Inspection and Evaluation of Concrete Durability"

ASTM/C666 "Standard Test Method for Rapid Freeze Thaw Capacity of Concrete" in the United States

KDR-V3 type 3-group 10 piece rapid freeze-thaw testing machine for concreteAdopting the water freezing and thawing method, the frost resistance and thawing test of concrete specimens with a size of 100 * 100 * 400 that meet the appearance requirements can be conducted. Three sets of specimens (including one central specimen) can be placed at a time. During the experiment, the test piece is placed in a test rubber cylinder, which is filled with water. The rubber cylinder is then placed in a test piece box containing antifreeze, and the unit's cooling or heating of the antifreeze is used to freeze or melt the test piece in the rubber cylinder, thus completing the freeze-thaw test. The device operates fully automatically throughout the entire process, without the need for human intervention. When the test is completed to the set (default of 50 times), it will automatically stop and emit a prompt sound to indicate the completion of the test. If the test needs to continue, it can accumulate the set number of times and then continue running.

KDR-V3 type 3-group 10 piece rapid freeze-thaw testing machine for concreteFeatures

This product has obtained national certification (No. ZL 2008 0 0078412.7).

Feature 1: Low compressor power, 3P imported compression refrigeration. Whether placed indoors or outdoors, the noise is low.

2. Heating does not use heating tubes, resulting in low power. The heating tube is soaked in antifreeze for a long time, which is prone to conductivity and other phenomena, affecting the heating life.

3. All in one machine, easy to move in the laboratory.

4. Environmental protection. Low noise and energy-saving. The body is compact and does not take up much space.

KDR-V3 type 3-group 10 piece rapid freeze-thaw testing machine for concreteMain technical parameters

1. Test piece capacity: 10 pieces

1. Outdoor waterproof freeze-thaw host: 1 unit;

2. Temperature range: -25 ℃~25 ℃

2. Indoor specimen box: 1 unit;

3. <2 ℃ between each point;

3. Test piece rack: one set

4. Measurement accuracy ± 0.5 ℃,

4. Rubber buckets: 10 pieces

5. Display resolution 0.06 ℃

5. Data connection cable: 1

6. Working dimensions: 690 * 295 * 620 (length * width * height mm)

6. Temperature sensors: 5 units; (One of them is for backup)

7. Dimensions: 1350 * 900 * 900 (length * width * height mm);

7. Antifreeze (original solution): 25kg (can be mixed with 50% tap water)

8. Concrete test block size (mm): 100 * 100 * 400

8. Software CD: 1 instruction manual and 1 warranty card

9. Rubber bucket size (mm): 120 * 120 * 500

9. 17 inch Fangzheng Business Computer: 1 unit (optional for users)

10. Overall power: 3KW

10. Dynamometer: 1 unit (optional for users)

11. Heating power: 2.3KW, cooling power: 2.3KW

12. Power supply: AC380V/20A three-phase four wire

13. Instrument weight: 200kg

KDR-V3 type 3-group 10 piece rapid freeze-thaw testing machine for concreteTest parameters

The freeze-thaw cycle period is 2.5-4 hours, and the melting time is not less than 1/4 of the freeze-thaw cycle. At the end of freezing, the center temperature of the specimen melts at -18 ± 2 ℃, and at the end of melting, the center temperature of the specimen melts at 5 ± 2 ℃. The cooling time is 1.5-2.5 hours, and the heating time is 1.0-1.5 hours. The temperature difference between the center and surface of the specimen is less than 28 ℃, and the standard number of cycles is more than 300.