3 thoughts on “What is the stability test value of Marshall stability test? Is the bigger the better or smaller and better?”
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The stability is not less than 8KN, and the flow value should be within the range of 1.5 ~ 4.5.
Machur stability is the maximum stress when the Marshall is undergoing a Marshall stability test, and the flow value is the corresponding deformation. Generally speaking, it can be considered that it is better to deform with a large degree of stability, indicating that the intensity of the mixture is high.
Then as an example of the mixture of asphalt concrete at the dense grade, for high -speed and first -class roads, the stability is not less than 8kn, and the flow value should be within a range of 1.5 ~ 4.5. These two indicators are generally easy to meet.
The Marshall test is the test that determines the best oil ratio of asphalt mixture. The test process is to standardize the test parts under the specified temperature and humidity conditions, and determine the stability and flow value of asphalt mixture. After a series of calculations, the oil ratio and stability, flow value, flow value, and flow value are drawn respectively. The relationship curve of the density, gap rate, and saturation, and finally determine the best oil ratio of asphalt mixture.
extension information:
If the standard Marshall test piece height does not meet the requirements of 63.5mm ± 1.3mm or the height difference between the two sides is greater than 2mm This test piece should be invalidated. The time from the constant temperature water tank to the time to measure the maximum load value, it must not exceed 30S.
Is when a set of measured values and average values in a set of measured values are greater than K times of the standard deviation, the determination value shall be abandoned and the average value of the remaining measured values should be used as the test result. When the number of test parts n is 3, 4, 5, and 6, the K values are 1.15, 1.46, 1.67, and 1.82, respectively.
Marshall stability is the maximum stress when Marshall tests Marshall stability test. The flow value is the corresponding deformation. Generally speaking, it can be considered that it is better to deform with a large degree of stability, indicating that the intensity of the mixture is high. Taking the dense -level asphalt concrete mixture as an example, for high -speed and first -class roads, the stability is not less than 8kn, and the flow value should be within a range of 1.5 ~ 4.5. These two indicators are generally easy to meet.
The less the better