A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WEIGHT FINE AGGREGATE AND WEIGHT CONCRETE
PROBLEM TO BE SOLVED: To manufacture weight concrete hardly causing material separation and less in bleeding amount without adding an aggregate material, such as limestone powder and natural sand, to a weight fine aggregate.SOLUTION: In a weight fine aggregate used for weight concrete, a bleeding amount of the weight concrete with unit volume mass of 2500 kg/mor more is suppressed to 0.6 cm/cmor less or 0.3 cm/cmor less by using the weight fine aggregate having the content of fine particle component with particle diameter of less than 0.15 mm contained in the weight fine aggregate of 9 to 15 mass%, Blaine specific surface area of 600 cm/g or more and absolute volume percentage of 53% or less or a weight fine aggregate having Blaine specific surface area of the fine particle component of 700 cm/g or more and absolute volume percentage of 51% or less without using any fine aggregate other than the weight fine aggregate.SELECTED DRAWING: Figure 2
【課題】重量細骨材中に石灰石粉末や天然砂などの骨材材料を加えずに、材料分離を生じ難く、ブリーディング量の少ない重量コンクリートを製造する。【解決手段】重量コンクリートに用いられる重量細骨材において、該重量細骨材に含まれる粒径０.１５mm未満の微粒分の含有量が９〜１５質量％であって、ブレーン比表面積が６００cm２/ｇ以上、および実積率が５３％以下である重量細骨材、または該微粒分のブレーン比表面積が７００cm２/ｇ以上であって実積率が５１％以下である重量細骨材を用いることによって、該重量細骨材以外の細骨材を用いずに、単位容積質量が２５００kg/m３以上の重量コンクリートのブリーディング量を０.６cm３/cm２以下または０.３cm３/cm２以下に抑制する。【選択図】図２
WEIGHT FINE AGGREGATE AND WEIGHT CONCRETE
PROBLEM TO BE SOLVED: To manufacture weight concrete hardly causing material separation and less in bleeding amount without adding an aggregate material, such as limestone powder and natural sand, to a weight fine aggregate.SOLUTION: In a weight fine aggregate used for weight concrete, a bleeding amount of the weight concrete with unit volume mass of 2500 kg/mor more is suppressed to 0.6 cm/cmor less or 0.3 cm/cmor less by using the weight fine aggregate having the content of fine particle component with particle diameter of less than 0.15 mm contained in the weight fine aggregate of 9 to 15 mass%, Blaine specific surface area of 600 cm/g or more and absolute volume percentage of 53% or less or a weight fine aggregate having Blaine specific surface area of the fine particle component of 700 cm/g or more and absolute volume percentage of 51% or less without using any fine aggregate other than the weight fine aggregate.SELECTED DRAWING: Figure 2
【課題】重量細骨材中に石灰石粉末や天然砂などの骨材材料を加えずに、材料分離を生じ難く、ブリーディング量の少ない重量コンクリートを製造する。【解決手段】重量コンクリートに用いられる重量細骨材において、該重量細骨材に含まれる粒径０.１５mm未満の微粒分の含有量が９〜１５質量％であって、ブレーン比表面積が６００cm２/ｇ以上、および実積率が５３％以下である重量細骨材、または該微粒分のブレーン比表面積が７００cm２/ｇ以上であって実積率が５１％以下である重量細骨材を用いることによって、該重量細骨材以外の細骨材を用いずに、単位容積質量が２５００kg/m３以上の重量コンクリートのブリーディング量を０.６cm３/cm２以下または０.３cm３/cm２以下に抑制する。【選択図】図２
WEIGHT FINE AGGREGATE AND WEIGHT CONCRETE
重量細骨材および重量コンクリート
KUROIWA YOSHIHITO (author) / KIMURA SHOHEI (author) / NAGASHIMA SATOSHI (author) / YOSHISAKA TAKESHI (author)
2016-10-20
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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