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Masonry Materials

How Mortar Performance Is Measured

Description

Mortar performance is measured by several key properties that matter in masonry work. These include workability, water retention, bond strength, durability, compressive strength, volume change, and appearance. Together, these properties help determine how well mortar can be placed, bonded, and finished.

Transcript

塑性状态下的优质砂浆具有良好的可加工性和保水能力。

良好的施工性使砂浆能够顺利铺展,粘附在垂直表面上而不会下垂,从接缝中挤出而不会掉落,并且易于定位砌筑单元。砂浆的可加工性也通过其滑动性能和对抹子的附着力来衡量。

保水是指避免水流失到大气中或被砖石单元吸收。

砂浆会变硬并失去塑性,从而产生拉伸粘合强度。

通过将砖与砂浆连接、固化,然后使用拉伸试验机分离单元来评估这种强度。

纹理表面的粘合强度通常较高,而光滑表面的粘合强度通常较低。

抗压强度是通过在实验室压缩试验机中测试固化的 2 英寸砂浆立方体来确定的,以记录失效前的最大载荷。

在建筑中,砂浆的特征是:M、S、N 和 O,它们是根据 28...