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Aggregates and Water

Aggregate Pore Effects on Specific Gravity

Description

Aggregate specific gravity depends on the pores inside the material. These pores may be permeable or impermeable, so the same aggregate can be described in more than one way. For this reason, specific gravity is grouped into bulk or gross specific gravity, apparent specific gravity, and absolute specific gravity.

Transcript

骨料的比重是给定温度下骨料密度与蒸馏水密度的比值。

聚集体的密度取决于其孔隙是否透水或不透水,基于此,聚集体的比重分为三种类型。

体积或总比重将聚集体的密度视为饱和表面干燥状态下的聚集体质量与包括固体和空隙在内的聚集体总体积之比。

同时,表观比重将聚集体的密度指定为聚集体的干质量与聚集体体积的比率,仅包括不透水空隙。

最后,绝对比重确定聚集体的密度,即聚集体的干质量与聚集体体积的比值,不包括所有空隙。

细骨料的比重使用比重瓶测量,粗骨料使用线篮法测量。

一般来说,天然聚集体的表观比重在 2.6 到 2.7 之间。

Tags

Bulk Specific GravityApparent Specific GravityAbsolute Specific GravityAggregate PorositySaturated Surface DryImpermeable VoidsConcrete MixturesNatural AggregatesRock Density