A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a strength estimation method for a foot protection part, the method being stable regardless of an amount of ground material.SOLUTION: An estimation method for a foot protection part includes: a first step of collecting a first sample from a support layer 12; a second step of obtaining a density of the first sample; a third step of forming and solidifying plural types of cement milk containing the first sample as aggregate, and from cement-water ratio and compression strength after solidification for the plural types of cement milk, obtaining a relational expression between the cement-water ratio and the compression strength for the cement milk containing the first sample as the aggregate; a fourth step of injecting cement milk on a bottom part of a drilled pile hole 1 and collecting the injected cement milk as a second sample; a fifth step of preparing a test body from the second sample and obtaining volume and mass of the test body; a sixth step of measuring electric conductivity of the second sample; a seventh step of obtaining the cement-water ratio of the second sample; and an eighth step of estimating the compression strength of a foot protection part 32 from the cement-water ratio of the second sample and the relational expression calculated in the third step.SELECTED DRAWING: Figure 3
【課題】地盤材料の量に関わらず安定した根固め部の強度推定方法を提供する。【解決手段】支持層１２から第一の試料を採取する第一の工程と、第一の試料の密度を求める第二の工程と、第一の試料を骨材として含むセメントミルクを複数種類生成して固化させ、それらセメントミルクのセメント水比と固化後の圧縮強度とから、第一の試料を骨材として含むセメントミルクのセメント水比と圧縮強度との関係式を求める第三の工程と、掘削した杭穴１の底部にセメントミルクを注入し、注入後のセメントミルクを第二の試料として採取する第四の工程と、第二の試料から試験体を作成し、試験体の体積及び質量を求める第五の工程と、第二の試料の電気伝導度を測定する第六の工程と、第二の試料のセメント水比を求める第七の工程と、第二の試料のセメント水比及び第三の工程で算出した関係式から根固め部３２の圧縮強度を推定する第八の工程とを有する。【選択図】図３
To provide a strength estimation method for a foot protection part, the method being stable regardless of an amount of ground material.SOLUTION: An estimation method for a foot protection part includes: a first step of collecting a first sample from a support layer 12; a second step of obtaining a density of the first sample; a third step of forming and solidifying plural types of cement milk containing the first sample as aggregate, and from cement-water ratio and compression strength after solidification for the plural types of cement milk, obtaining a relational expression between the cement-water ratio and the compression strength for the cement milk containing the first sample as the aggregate; a fourth step of injecting cement milk on a bottom part of a drilled pile hole 1 and collecting the injected cement milk as a second sample; a fifth step of preparing a test body from the second sample and obtaining volume and mass of the test body; a sixth step of measuring electric conductivity of the second sample; a seventh step of obtaining the cement-water ratio of the second sample; and an eighth step of estimating the compression strength of a foot protection part 32 from the cement-water ratio of the second sample and the relational expression calculated in the third step.SELECTED DRAWING: Figure 3
【課題】地盤材料の量に関わらず安定した根固め部の強度推定方法を提供する。【解決手段】支持層１２から第一の試料を採取する第一の工程と、第一の試料の密度を求める第二の工程と、第一の試料を骨材として含むセメントミルクを複数種類生成して固化させ、それらセメントミルクのセメント水比と固化後の圧縮強度とから、第一の試料を骨材として含むセメントミルクのセメント水比と圧縮強度との関係式を求める第三の工程と、掘削した杭穴１の底部にセメントミルクを注入し、注入後のセメントミルクを第二の試料として採取する第四の工程と、第二の試料から試験体を作成し、試験体の体積及び質量を求める第五の工程と、第二の試料の電気伝導度を測定する第六の工程と、第二の試料のセメント水比を求める第七の工程と、第二の試料のセメント水比及び第三の工程で算出した関係式から根固め部３２の圧縮強度を推定する第八の工程とを有する。【選択図】図３
STRENGTH ESTIMATION METHOD FOR FOOT PROTECTION PART
根固め部の強度推定方法
YODA YUYA (author)
2018-12-06
Patent
Electronic Resource
Japanese
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