鹿児島県地方の特殊事情に応ずる鉄筋コンクリート工事標準仕様書(私案) : その3 骨材条件・砕石調合表

DOI Web Site Web Site

書誌事項

タイトル別名
  • STANDARD SPECIFICATION FOR REINFORCED CONCRETE WORK IN COMPLIANCE WITH THE DISADVANTAGEOUS CONDITIONS IN THE DISTRICT OF KAGOSHIMA PREFECTURE
  • 鹿児島県地方の特殊事情に応ずる鉄筋コンクリート工事標準仕様書(私案)-3-
  • カゴシマケン チホウ ノ トクシュ ジジョウ ニ オウズル テッキン コンクリート コウジ ヒョウジュン シヨウショ シアン 3

この論文をさがす

抄録

This is the successive report to the previous one. Here, three main items are picked up; various conditions of aggregates, A.E. concrete mix, broken stone concrete mix, both plain and air-entraining. (1) Conditions of aggregates. The whole mix table is first systematized in absolute volume mix. The other methods are derived from it by culculation according to the conditions of the aggregate, which is somewhat different from normal one. Statistical and empirical data on specific weight, percentage of absolute volume, standard and field measuring are given. The ground of the culculation will thus become clear. (2) A.E. concrete mix. The mix table is shown in the previous report. The way of modifing the Standard-mix and of getting A.E. mix are explained. The JASS method of modification is available in this case. We lessen 8°/wt of water and decrease sand in plastic mix. Stiff concrete of 5, 10cm slump is obtained directly by experiment, for we have no such mix in the Standard-mix. (3) Broken stone concrete. a. Consistency of concrete is different according to the grading of the broken stone even within the allowable grading limits. To get concrete of better consistency coarser grading is advantageous. b. Water should be added 8〜12°/wt to the Standard-mix. This is different from JASS and it is proved to be harmless to the strength. c. B.S., A.E. concrete can be got following JASS, lesseing water 8°/wt from plain concrete in plastic mix. Stiff mix was made through experiment. The mix table is shown to the end.

収録刊行物

詳細情報 詳細情報について

問題の指摘

ページトップへ