混凝土厚层碾压试验研究

Experimental Study on the Thick Layer Roller Compacted Technology of RCC

为解决当前碾压混凝土压实厚度只能在30cm左右的限制,加快碾压混凝土施工速度,采用新型的垂直振动碾和密度检测仪进行不同摊铺厚度(27cm、41cm、54cm)、碾压层厚(54cm、82cm、108cm)的碾压工艺试验,取得的密度数据表明,碾压合适的遍数、压实后厚度为30～60cm的混凝土,其压实度可满足质量要求。三种新型的密度检测仪(最大测深度100cm)能满足30cm以上厚层碾压混凝土在施工过程中的检测要求。

To break through the restrictions of the thickness of the current RCC compaction about 30cm,and to accelerate the speed of roller compacted concrete construction,new types of vertical vibration of roller and detectors of density are used for the RCC process tests of different thickness paver（27cm,41cm,54cm） and roller compacted thickness（54cm,82cm,108cm）.The density datas obtained show that the appropriate times of rolling and the post-compaction thickness of 3～60cm of concrete,its degree of compaction can satisfy the quality requirements,and three new detectors of density（maximum measured depth of 100cm） can meet the testing requirements of more than 30cm thick layer of roller compacted concrete in the construction process.