HG-80 meter concrete penetration resistance, penetration resistance of concrete concrete setting time measurement instrument
Concrete penetration resistance tester
Function
Mainly used for the determination of the setting time of concrete by penetration resistance method.
Scope of application
Applicable to all kinds of cement, admixture and concrete is different with ratio, concrete mixture under different ambient temperature, setting time test.
Structure characteristics
The exterior design is light and beautiful. Using the lever principle, the measuring force can be directly read by the instrument, so that the test is convenient and accurate.
Main technical parameters
1, sample mode: diameter: 160mm diameter: 150mm depth: 150mm
2, the maximum penetration force: 1000N
3, penetration depth: 25mm
4, needle penetration area: 100mm2; 50mm2; 20mm2
5, the minimum index value: 5N shows the value error: + 10N
Maximum force: 1000N
Dial precision: 5N
Measuring the circular area of the needle: 100mm2, 50mm2, 20mm2
Concrete penetration resistance instrument operation?
1, the instrument is placed on the level of the platform.
2, connected with the power supply, press the "power" button on the digital display panel. Please power 10 minutes later, so that the digital value automatically tends to "0"".
3, optional on the right needle penetration. 350n at the beginning of the corresponding gel penetration resistance (i.e., 2~3.5Mpa case 100 mm2 needle penetration); 1000N corresponding intermediate penetration resistance (i.e., 3.5~20Mpa, at this time with 50 mm2 needle penetration); 560n corresponding final setting penetration resistance (i.e., 20~28Mpa, this time with 20mm2 needle penetration).
4, mould filled with concrete test specimen, even after placed on the apparatus on the floor.
5, adjust the depth of penetration.
Concrete penetrometer resistance a method is: to measure the penetration of the needle under the surface and the sample plane distance x (Note: X shall be no more than 5mm, otherwise, it should be appropriately reduced penetration needle), then the top of the instrument set long nut under the plane and "cover" the plane distance adjustment to 25+Xmm, and then tighten the screw cap, the length of the lock 25+X. Another method is: the pressure handle the penetration under the needle on the surface and the sample plane maintain flush, and then adjust the nut of the fixed length of the upper part of the instrument, make the plane and "cover" the plane distance transferred to 25mm and lock the length, and then the handle is loosened. The actual penetration depth of the above two methods are 25mm.
6, test. Firstly, the initial value of the sensor is cleared by the reset button on the display panel. Then press the test button into the test condition, and display board on the first light (test) lights bright, hold the handle is rotated downward, the penetration to the needle contact sample to penetration of the deepest position (25mm) process control in about 10 seconds. At this point, the number of peak, while the number of second lights on the board (peak light), read out the display value of the display, do a good job of record, a test. At the beginning of the coagulation time, use 1 cm2 needle penetration, the formula is: p-n 83019 (100 MPa); final setting time, 0.2 cm2 needle penetration, the formula is: n = 5 / 100 (MPA).
Test procedure
1, concrete on the instrument chassis, loosen the adjusting sleeve, optional on the right needle penetration.
2, the regulation of the plug pressure gauge pointer alignment calibration zero line.
3, the action toggle switches arranged in an adjusting position is reverse toggle switch is arranged in the forward position, press button after the sample container in 2 seconds later. Began to rise, to be stopped, you can adjust. The adjustment will loosen the adjustment screw sleeve needle penetration to just touches the sample surface, tighten the adjusting sleeve fixed needle penetration. Again according to the Dodo button, after 10 seconds of the sample container increased 25mm, penetration to the deepest location, read gauges the penetration resistance and record, sample container to stay 4 seconds later, began to decline, seven seconds after restoration in situ. Automatic shutdown, a test is completed.
4, the second penetration test must transform penetration position, the handle is pushed to rotate a certain angle, when the penetration point in the outer ring, change measuring points only need to push the handle of a; when penetration in the inner, change it to push the handle of the second.
5, in the test process, should always pay attention to the pressure gauge pointer start is zero, if not zero zero zero.
6, in the adjustment of needle penetration level is not needed, but the action button switch is arranged in the automatic position, so that in later tests in as long as the press the start button once, namely self test cycle action.
7, each specimen penetration resistance test shall be not less than six times, the last time the unit area penetration resistance should be less than 28MPa.
8 the use of a period of time after, rotating the adjusting plug to the limit position can't be the pressure gauge pointer is transferred to the zero line, this time to add oil.
Matters needing attention
1, before using this product, please read the instructions carefully, and properly keep the instructions.
2, do not use this product outside the attachment and accessories, so as not to cause fire and personal injury.
3, please do not let the children, the elderly and people with intellectual disabilities to contact, use this product.
4, blade device is very sharp, in the operation and cleaning process, please pay attention to safety.
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