A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
EVALUATION METHOD OF COARSE AGGREGATE FOR HIGH-STRENGTH CONCRETE
PROBLEM TO BE SOLVED: To provide an evaluation method capable of easily evaluating a quality of aggregate for high-strength concrete.SOLUTION: The coarse aggregate evaluation method according to the present invention includes the steps of: measuring compressive strengths Sof a plurality of concrete test pieces each manufactured by including two types or more coarse aggregate, measuring drilling depths Hof the two types or more aggregate respectively, and creating a correlation equation of the plurality of drilling depths Hand the compressive strengths S; and measuring drilling depth Hof evaluation object coarse aggregate to be evaluated whether or not it is suitable as the coarse aggregate for the high-strength concrete, in this order or reverse order thereof. The coarse aggregate evaluation method further includes a step of calculating a predictive compressive strength Sof the concrete including the coarse aggregate from the drilling depth Hof the evaluation object coarse aggregate and the correlation equation. When the predictive compressive strength Sis a prescribed value or more, the evaluation object coarse aggregate is determined to be suitable as the coarse aggregate for the high-strength concrete.SELECTED DRAWING: Figure 1
【課題】高強度コンクリート用骨材の品質をより簡便に評価することが可能な評価方法を提供する。【解決手段】本発明に係る粗骨材評価方法は、二種以上の粗骨材をそれぞれ含み作製された複数のコンクリート供試体の圧縮強度ＳＭ０をそれぞれ測定するとともに、該二種以上の粗骨材の削孔深さＨＭ０をそれぞれ測定して、複数の該削孔深さＨＭ０と該圧縮強度ＳＭ０の測定値との相関式を作成する工程と、高強度コンクリート用粗骨材として適しているか否かを評価すべき、評価対象の粗骨材の削孔深さＨＭ１を測定する工程とを、この順で又はこの逆の順で備える。評価対象の粗骨材の削孔深さＨＭ１及び相関式から、粗骨材を含むコンクリートの予測圧縮強度ＳＰ１を算出する工程を更に備え、予測圧縮強度ＳＰ１が所定値以上であるときに、評価対象の粗骨材について、高強度コンクリート用粗骨材として適していると判断する。【選択図】図１
EVALUATION METHOD OF COARSE AGGREGATE FOR HIGH-STRENGTH CONCRETE
PROBLEM TO BE SOLVED: To provide an evaluation method capable of easily evaluating a quality of aggregate for high-strength concrete.SOLUTION: The coarse aggregate evaluation method according to the present invention includes the steps of: measuring compressive strengths Sof a plurality of concrete test pieces each manufactured by including two types or more coarse aggregate, measuring drilling depths Hof the two types or more aggregate respectively, and creating a correlation equation of the plurality of drilling depths Hand the compressive strengths S; and measuring drilling depth Hof evaluation object coarse aggregate to be evaluated whether or not it is suitable as the coarse aggregate for the high-strength concrete, in this order or reverse order thereof. The coarse aggregate evaluation method further includes a step of calculating a predictive compressive strength Sof the concrete including the coarse aggregate from the drilling depth Hof the evaluation object coarse aggregate and the correlation equation. When the predictive compressive strength Sis a prescribed value or more, the evaluation object coarse aggregate is determined to be suitable as the coarse aggregate for the high-strength concrete.SELECTED DRAWING: Figure 1
【課題】高強度コンクリート用骨材の品質をより簡便に評価することが可能な評価方法を提供する。【解決手段】本発明に係る粗骨材評価方法は、二種以上の粗骨材をそれぞれ含み作製された複数のコンクリート供試体の圧縮強度ＳＭ０をそれぞれ測定するとともに、該二種以上の粗骨材の削孔深さＨＭ０をそれぞれ測定して、複数の該削孔深さＨＭ０と該圧縮強度ＳＭ０の測定値との相関式を作成する工程と、高強度コンクリート用粗骨材として適しているか否かを評価すべき、評価対象の粗骨材の削孔深さＨＭ１を測定する工程とを、この順で又はこの逆の順で備える。評価対象の粗骨材の削孔深さＨＭ１及び相関式から、粗骨材を含むコンクリートの予測圧縮強度ＳＰ１を算出する工程を更に備え、予測圧縮強度ＳＰ１が所定値以上であるときに、評価対象の粗骨材について、高強度コンクリート用粗骨材として適していると判断する。【選択図】図１
EVALUATION METHOD OF COARSE AGGREGATE FOR HIGH-STRENGTH CONCRETE
高強度コンクリート用粗骨材の評価方法
OKADA HIROSHI (author) / SASAKI AKIRA (author) / ITO TOMOAKI (author)
2018-07-26
Patent
Electronic Resource
Japanese
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