The aggregates segregation in mortars is an event that lead to the formation of a properties gradient along size of the piece, affecting the mechanical performance of the material. In rubberized mortars, the rubber particles are less dense than other aggregates and it can causes considerable segregation effect, depending on the material processing conditions. In present study, the rubber segregation in mortar has been evaluated by image analysis in specimens prepared with various mechanical vibration and water content. For it, specimens of rubberized mortar were prepared on controlled conditions as well as axially cut and polished. A method was created, defining the sample surface in levels, in order to evaluate the rubber segregation. The result obtained showed that rubber segregation is strongly affected by the water content used in the mortar preparation, while the effects related to the vibration time are less significant. The increasing rubber content in the mortar lead also to a gradual decrease in compressive strength and apparent density of the material. The present study allowed establishing limit parameters for the processing of rubberized mortar in order to avoid considerable rubber segregation.

砂浆中的骨料偏析是导致沿着碎片尺寸形成性能梯度的事件，从而影响了材料的机械性能。在橡胶砂浆中，橡胶颗粒的密度低于其他聚集体，并且会导致明显的偏析效果，具体取决于材料加工条件。在本研究中，已通过图像分析评估了在各种机械振动和水含量下制备的试样中砂浆中的橡胶偏析。为此，在受控条件下制备橡胶砂浆标本，并对其进行轴向切割和抛光。创建了一种方法来定义样品表面的水平，以评估橡胶的偏析。所获得的结果表明，砂浆制备中所用的水含量强烈影响橡胶的偏析，而与振动时间有关的影响则不太明显。砂浆中橡胶含量的增加还导致材料的抗压强度和表观密度逐渐降低。本研究允许为橡胶砂浆的加工建立极限参数，以避免明显的橡胶偏析。