EXPERIMENTAL STUDY ON VARIOUS FLUIDITY EVALUATION METHODS OF THE CEMENT GROUT FOR SEMI-FLEXURAL PAVING ASPHALT MIX

半たわみ性舗装用セメントミルクの各種流動性試験方法に関する実験的研究

A semi-flexible pavement is a pavement designed to prevent plastic deformation due to loading. In order to achieve this performance, it is necessary to be adequately filled with cement grout into gap in porous asphalt pavement. However, the evaluation method for the filling ability of cement grout has not been established yet. In order to evaluate the filling ability, a funnel test is usually used. And in Japan, a P-funnel test is used for it. However, this test method is not for evaluating the filling ability but the viscosity of cement grout. In this study, by using several types of cement grout with different viscosity, the relationship between filling ability and results of several kind of testing method was investigated. Based on the results, it was found that table-flow test was more suitable for evaluating method than a funnel test. ポーラスアスファルト合材の空隙にセメントミルクを充填した舗装として半たわみ性舗装がある。この舗装が有する特徴は耐塑性変形であり、性能を満足させるためにはセメントミルクの充填性が最も重要である。充填性はP漏斗による流下時間から判断しているが、この評価方法は本質的に粘度の評価であり、必ずしも充填性が判断できるものではない。本研究ではP漏斗試験と各種流動性試験との関連性を検討すると共に、粘度レベルの違うセメントミルクをポーラスアスファルト母体に充填して、充填率と各種流動性試験から、充填性が評価できる最も適切な評価方法を検討した。

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  • Accession Number: 01667544
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Mar 30 2018 3:05PM