压碎值

片麻岩碎石压碎值对混凝土力学性能的影响

Influence of Crushing Value of Granitic Gneiss Coarse Aggregate on Mechanical Properties of Concrete with Different Strengths

建议沥青路面提高粗集料的压碎值、坚固性、针片状含量三项技术指标，有效防止和减少沥青路面因石料质量临界指标过低造成的早期破损。

It is suggested to improve the three quality indexes of crushing value , soundness , and elongated particle contents in asphalt pavements , in order to effectively prevent and decrease the fast destroy in cause of low requirements quality indexes of crushed stone in asphalt pavements .

ZPC组虽未有裂缝情况但有脱落现象，压碎载荷值最低；

The crowns cemented with ZPC cement did not fracture but had an exfoliation phenomenon , with the lowest failture load .

本文研究了粗集料的最大粒径、级配和压碎指标值等对路面混凝土抗折强度的影响。

The effect of maximum diameter , grading distribution and crushing index of coarse aggregate on flexural strength of concrete is investigated through experiments .

和天然粗骨料相比，再生粗骨料组成成份复杂，且具有密度小、空隙率大、吸水快、吸水率大、压碎指标值大、含泥量大及坚固性低等特点。

Compared to the natural coarse aggregate , the composition of recycled coarse aggregate is complex , and it is of lower density , higher porosity , faster water absorption , larger water absorption capacity , larger crushing index value , larger quantity of mud and lower robustness .