A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROTECTIVE PLATE FOR UNDERGROUND BURIED OBJECT AND METHOD OF MANUFACTURING THE SAME
PROBLEM TO BE SOLVED: To provide a protective plate for an underground buried object which consists of a cement hardened body having high compressive strength (for example, 330 N/mmor more) and is less likely to be cut or damaged by an asphalt cutter or the like.SOLUTION: A protective plate 1 for an underground buried object consists of a cement hardened body. The cement hardened body is formed by hardening a cement composition which contains cement, silica fume having a BET specific surface area of 15-25 m/g, an inorganic powder having a 50% cumulative particle size of 0.8-5 μm, an aggregate having a maximum particle size of 1.2 mm or less, a high performance water reducing agent, an antifoaming agent, and water, and in which the content of the cement is 55-65% by volume, the content of the silica fume is 5-25% by volume, and the content of the inorganic powder is 15-35% by volume in 100% by volume of the total amount of the cement, silica fume and inorganic powder.SELECTED DRAWING: Figure 1
【課題】高い圧縮強度（例えば、３３０Ｎ／ｍｍ２以上）を有するセメント質硬化体からなり、アスファルトカッター等による切断や損傷が生じにくい地中埋設物用防護板を提供する。【解決手段】セメント質硬化体からなる地中埋設物用防護板１であって、セメント質硬化体が、セメント、ＢＥＴ比表面積が１５〜２５ｍ２／ｇのシリカフューム、５０％体積累積粒径が０．８〜５μｍの無機粉末、最大粒径が１．２ｍｍ以下の骨材、高性能減水剤、消泡剤及び水を含み、かつセメント、シリカフューム及び無機粉末の合計量１００体積％中、セメントの割合が５５〜６５体積％、シリカフュームの割合が５〜２５体積％、無機粉末の割合が１５〜３５体積％であるセメント組成物を硬化してなるものである地中埋設物用防護板１。【選択図】図１
PROTECTIVE PLATE FOR UNDERGROUND BURIED OBJECT AND METHOD OF MANUFACTURING THE SAME
PROBLEM TO BE SOLVED: To provide a protective plate for an underground buried object which consists of a cement hardened body having high compressive strength (for example, 330 N/mmor more) and is less likely to be cut or damaged by an asphalt cutter or the like.SOLUTION: A protective plate 1 for an underground buried object consists of a cement hardened body. The cement hardened body is formed by hardening a cement composition which contains cement, silica fume having a BET specific surface area of 15-25 m/g, an inorganic powder having a 50% cumulative particle size of 0.8-5 μm, an aggregate having a maximum particle size of 1.2 mm or less, a high performance water reducing agent, an antifoaming agent, and water, and in which the content of the cement is 55-65% by volume, the content of the silica fume is 5-25% by volume, and the content of the inorganic powder is 15-35% by volume in 100% by volume of the total amount of the cement, silica fume and inorganic powder.SELECTED DRAWING: Figure 1
【課題】高い圧縮強度（例えば、３３０Ｎ／ｍｍ２以上）を有するセメント質硬化体からなり、アスファルトカッター等による切断や損傷が生じにくい地中埋設物用防護板を提供する。【解決手段】セメント質硬化体からなる地中埋設物用防護板１であって、セメント質硬化体が、セメント、ＢＥＴ比表面積が１５〜２５ｍ２／ｇのシリカフューム、５０％体積累積粒径が０．８〜５μｍの無機粉末、最大粒径が１．２ｍｍ以下の骨材、高性能減水剤、消泡剤及び水を含み、かつセメント、シリカフューム及び無機粉末の合計量１００体積％中、セメントの割合が５５〜６５体積％、シリカフュームの割合が５〜２５体積％、無機粉末の割合が１５〜３５体積％であるセメント組成物を硬化してなるものである地中埋設物用防護板１。【選択図】図１
PROTECTIVE PLATE FOR UNDERGROUND BURIED OBJECT AND METHOD OF MANUFACTURING THE SAME
地中埋設物用防護板及びその製造方法
KONO KATSUYA (author) / NAKAYAMA RISA (author)
2016-12-28
Patent
Electronic Resource
Japanese
| European Patent Office | 2021