Heat treated boards display a reducedmodulus of rupture and an increase in dustiness.
经过热处理后，板材的断裂模数变小，而含尘量增加。
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Nanoindentation has been widely used to evaluate and test material properties, we utilize the unloading curves of an indentation test to extract the hardness and reducedmodulus of the material.
Such as sand not clean (mud high content), sand the fineness modulus too high or too low, also can make the strength of concrete is reduced, and the water increased.