Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
DEEP CEMENT MIXING MATERIALS USING LIGHT BURNED DOLOMITE
The present invention relates to a hardening agent for a deep mixing method using light burned dolomite. The hardening agent includes, based on 100 parts by weight of light burned dolomite fine aggregates inspected and determined as having less than 10% of residues passed through a 0.044 mm (44 μm) sieve, or crushed and classified, 100-300 parts by weight of blast furnace slag fine aggregates inspected and determined as having less than 10% of residues passed through a 0.044 mm (44 μm) sieve, or crushed and classified, and 50-200 parts by weight of gypsum containing at least 50 wt% of calcium oxide and at least 15 wt% of sulfate oxide, and inspected and determined as having less than 10% of residues passed through a 0.044 mm (44 μm) sieve, or crushed and classified. According to the present invention, CaO and SiO_2 ingredients obtained by vitrification of blast furnace slag fine aggregates are activated by alkaline and sulfate stimuli of the gypsum including at least 50 wt% of calcium oxide and at least 15 wt% of sulfate oxide at hydrogen ion concentration (pH) of 12 or more, so that strength of the hardening agent equal to or greater than that of type I ordinary cement can be obtained. In addition, according to the present invention, low permeability can be represented as pore water of soil is excluded and volume expansion occurs through a volume expansion reaction in which at least 30 wt% of MgO ingredients contained in light burned dolomite fine aggregates meet water (H_2O) to be transformed into Mg(OH)_2 and be strengthened and expand, without an additional expansion agent.
본 발명은 0.044㎜(44㎛)체 잔분이 10% 미만으로 검사판정 되거나, 분쇄 분급된 경소백운석 미분말 100중량부에 대하여 0.044㎜(44㎛)체 잔분이 10% 미만으로 검사판정 되거나, 분쇄 분급된 고로슬래그 미분말 100~300중량부, 및 칼슘 옥사이드(Calcium oxide) 함량이 50중량% 이상이고, 설페이트 옥사이드(Sulfate oxide) 함량이 15중량% 이상이며, 0.044㎜(44㎛)체 잔분이 10% 미만으로 검사판정 되거나, 분쇄 분급된 석고 50~200중량부를 포함하는 것을 특징으로 하는 심층혼합공법용 고화재에 관한 것이다. 본 발명에 따르면, 고로슬래그 미분말의 유리화된 CaO, SiO성분들이 수소이온농도(pH) 12 이상이며 칼슘 옥사이드(Calcium oxide) 함량이 50중량% 이상이고 설페이트 옥사이드(Sulfate oxide) 함량이 15중량% 이상인 석고의 알칼리 및 황산염 자극에 의해 활성화되어 1종 보통시멘트와 동등 이상의 강도를 발현할 수 있다. 또한, 본 발명에서는 별도의 팽창제를 포함하지 않고도, 경소백운석 미분말에 30중량% 이상 함유된 MgO 성분이 배합수(HO)와 만나 Mg(OH)로 전이되면서 강도를 발현하는 동시에 팽창하는 체적 팽창작용으로 토양의 간극수가 배제되고 체적팽창이 일어나 낮은 투수성능을 나타내는 효과를 가진다.
DEEP CEMENT MIXING MATERIALS USING LIGHT BURNED DOLOMITE
The present invention relates to a hardening agent for a deep mixing method using light burned dolomite. The hardening agent includes, based on 100 parts by weight of light burned dolomite fine aggregates inspected and determined as having less than 10% of residues passed through a 0.044 mm (44 μm) sieve, or crushed and classified, 100-300 parts by weight of blast furnace slag fine aggregates inspected and determined as having less than 10% of residues passed through a 0.044 mm (44 μm) sieve, or crushed and classified, and 50-200 parts by weight of gypsum containing at least 50 wt% of calcium oxide and at least 15 wt% of sulfate oxide, and inspected and determined as having less than 10% of residues passed through a 0.044 mm (44 μm) sieve, or crushed and classified. According to the present invention, CaO and SiO_2 ingredients obtained by vitrification of blast furnace slag fine aggregates are activated by alkaline and sulfate stimuli of the gypsum including at least 50 wt% of calcium oxide and at least 15 wt% of sulfate oxide at hydrogen ion concentration (pH) of 12 or more, so that strength of the hardening agent equal to or greater than that of type I ordinary cement can be obtained. In addition, according to the present invention, low permeability can be represented as pore water of soil is excluded and volume expansion occurs through a volume expansion reaction in which at least 30 wt% of MgO ingredients contained in light burned dolomite fine aggregates meet water (H_2O) to be transformed into Mg(OH)_2 and be strengthened and expand, without an additional expansion agent.
본 발명은 0.044㎜(44㎛)체 잔분이 10% 미만으로 검사판정 되거나, 분쇄 분급된 경소백운석 미분말 100중량부에 대하여 0.044㎜(44㎛)체 잔분이 10% 미만으로 검사판정 되거나, 분쇄 분급된 고로슬래그 미분말 100~300중량부, 및 칼슘 옥사이드(Calcium oxide) 함량이 50중량% 이상이고, 설페이트 옥사이드(Sulfate oxide) 함량이 15중량% 이상이며, 0.044㎜(44㎛)체 잔분이 10% 미만으로 검사판정 되거나, 분쇄 분급된 석고 50~200중량부를 포함하는 것을 특징으로 하는 심층혼합공법용 고화재에 관한 것이다. 본 발명에 따르면, 고로슬래그 미분말의 유리화된 CaO, SiO성분들이 수소이온농도(pH) 12 이상이며 칼슘 옥사이드(Calcium oxide) 함량이 50중량% 이상이고 설페이트 옥사이드(Sulfate oxide) 함량이 15중량% 이상인 석고의 알칼리 및 황산염 자극에 의해 활성화되어 1종 보통시멘트와 동등 이상의 강도를 발현할 수 있다. 또한, 본 발명에서는 별도의 팽창제를 포함하지 않고도, 경소백운석 미분말에 30중량% 이상 함유된 MgO 성분이 배합수(HO)와 만나 Mg(OH)로 전이되면서 강도를 발현하는 동시에 팽창하는 체적 팽창작용으로 토양의 간극수가 배제되고 체적팽창이 일어나 낮은 투수성능을 나타내는 효과를 가진다.
DEEP CEMENT MIXING MATERIALS USING LIGHT BURNED DOLOMITE
경소백운석을 활용한 심층혼합공법용 고화재
PARK WON CHUN (Autor:in)
08.07.2016
Patent
Elektronische Ressource
Koreanisch
IPC:
C04B
Kalk
,
LIME
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