KR0125466B1 - Soil stabilizer and process thereof - Google Patents

Soil stabilizer and process thereof

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Publication number
KR0125466B1
KR0125466B1 KR1019930028841A KR930028841A KR0125466B1 KR 0125466 B1 KR0125466 B1 KR 0125466B1 KR 1019930028841 A KR1019930028841 A KR 1019930028841A KR 930028841 A KR930028841 A KR 930028841A KR 0125466 B1 KR0125466 B1 KR 0125466B1
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South Korea
Prior art keywords
weight
mixture
soil
cement
blast furnace
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KR1019930028841A
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Korean (ko)
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KR950018395A (en
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백운
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백운
대륜건설주식회사
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Publication of KR0125466B1 publication Critical patent/KR0125466B1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2103/00—Civil engineering use
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Abstract

Disclosed a soil solidifier comprising a first compound having a lime, a calcium chloride, a sodium sulfate, a lignin sulfonic acid; a second compound having a cement, a fly ash, a blast furnace slag, wherein the first compound and the second compound are mixed each other. The present invention has a high solidity and a rapid hardening such that this can be used as a road solidifier for strengthening a weak ground and preparing a road.

Description

토양고화제Soil hardener

본 발명은 토양고화제에 관한것으로서, 더욱 상세하게는 연약한 지반을 강화시키거나 도로 조성시에 균열발생없이 노상(路上)강화 등에 사용되는 고강도이면서 경화시간이 짧은 토양고화제에 관한 것이다.The present invention relates to a soil hardener, and more particularly, to a high strength and short hardening time soil hardener used for reinforcing roadbeds without reinforcing soft ground or cracking during road construction.

플라이애쉬(flyash)와 고로 슬래그(blast furnace slag)는 대표적인 인공 포졸란(pozzolan)으로서, 이중 플라이애쉬는 시멘트의 부분 대체물질로 사용되고 있으며 이를 물과 반응시킬 경우 시멘트-물과의 반응(시멘트로부터 유리되는 수산화칼슘(Ca(OH)2)과 반응, 일명 포졸란 반응)과 유사하게 반응하여 경화성을 나타낸다. 그러나 그 반응속도가 시멘트와 비교하여 느리므로 속경성을 기대할 수 없는 문제가 있다. 또한, 플라이애쉬가 다량 함유될 경우 균열을 발생시킬 우려가 있다.Fly ash and blast furnace slag are representative artificial pozzolans, double fly ash being used as a partial replacement for cement, and when it is reacted with water, it reacts with cement-water (from cement to glass). It reacts with calcium hydroxide (Ca (OH) 2 ), which is also known as pozzolanic reaction, to exhibit curability. However, since the reaction rate is slower than that of cement, there is a problem in that fast hardening cannot be expected. In addition, when a large amount of fly ash is contained, there is a fear of causing cracks.

그리고, 고로 슬래그(blast furnace slag)는 수경성은 아니지만 시멘트와 물과 혼합시키면 플라이애쉬와 같은 알카리 자극을 받아경화특성을 나타내게 되나, 역시 시멘트-물과의 반응속도보다 느리며 압축강도가 낮은 문제가 있다.In addition, blast furnace slag is not hydraulic, but when it is mixed with cement and water, it is hardened by alkali stimulation such as fly ash, but exhibits hardening properties. .

따라서, 이와 같은 시멘트 혼합재를 첨가하여 얻어진 토양고화제는 강도가 약하고 경화속도가 느려 이를 연약한 지반이나 도로조성시에 노상강화제로 사용하기에는 문제가 많았다.Therefore, the soil hardener obtained by adding such cement mixture had a weak strength and a slow curing rate, so that it was difficult to use it as a hardener for soft ground or road construction.

본 발명의 목적은 시멘트, 플라이애쉬 및 고로 슬래그와 함께 염화칼슘 및 리그닌술폰산 등을 첨가하여 강도를 향상시키고 경화속도를 단축시킴으로써 연약한 지반이나 도로조성시 균열발생을 방지할 수 있는 노상강화제로 유용할뿐만 아니라 플라애쉬나 고로 슬래그와 같은 산업폐기물을 유효하게 대량 이용하여 자연환경을 보호할 수 있는 토양고화제를 제공하는 데에 있다.It is an object of the present invention to add calcium chloride and lignin sulfonic acid together with cement, fly ash and blast furnace slag to improve strength and shorten the curing speed, which is useful as a roadbed strengthening agent that can prevent cracking during soft ground or road construction. However, it is to provide a soil hardener that can protect the natural environment by effectively using a large amount of industrial waste such as fly ash or blast furnace slag.

상기 본 발명의 목적을 달성하기 위한 토양고화제는 석회0.1~1.0중량%, 염화 0.2~2.0중량%, 황산나트륨0.05~0.5중량%, 리그닌술폰산0.01~1.0중량% 및 석고 0.5~2중량%로 이루어진 제 1혼합물과 시멘트 90.0~97.6%, 플라이애쉬 1.0~2.5중량% 및 고로 슬래그 0.5~1.5중량%로 이루어진 데에 그 특징이 있다.Soil hardening agent for achieving the object of the present invention is composed of 0.1 to 1.0% by weight of lime, 0.2 to 2.0% by weight of chloride, 0.05 to 0.5% by weight of sodium sulfate, 0.01 to 1.0% by weight of lignin sulfonic acid and 0.5 to 2% by weight of gypsum The first mixture is characterized by consisting of 90.0 to 97.6% of cement, 1.0 to 2.5% by weight of fly ash and 0.5 to 1.5% by weight of blast furnace slag.

또한, 본 발명의 토양고화제를 제조하는 방법은 석회, 염화칼슘, 황산나트륨, 리그닌술폰산 및 석고를 혼합하여 제1혼합물을 제조하는 공정, 이와는 별도로 시멘트, 플라이애쉬 및 고로 술래그를 혼합하여 제2혼합물을 제조하는 공정, 및 상기 제1혼합물과 제2혼합물을 혼합하여 괴상체를 생성하고 이를 미세분말화하는 공정으로 이루어진 데 그 특징이 있다.In addition, the method for preparing the soil hardener of the present invention is a process for preparing a first mixture by mixing lime, calcium chloride, sodium sulfate, lignin sulfonic acid and gypsum, and separately from the cement, fly ash and blast furnace sag to mix the second mixture It is characterized by consisting of a process for producing, and a process of mixing the first mixture and the second mixture to form a mass and finely powder it.

이와 같은 본 발명에 따른 토양고화에에 대하여 구체적으로 설명하면 다음과 같다.When concretely described for the soil solidification according to the present invention as follows.

본 발명에서 사용되는 시멘트로는 통상의 시멘트를 모두 사용할 수 있으나, 바람직하기로는 포틀랜트 시멘트를 사용한다. 일반적으로 포틀랜트 시멘트에 플라이애쉬나 고로 술래그와 같은 포졸란을 혼합하면 이들 포졸란이 시멘트에서 유리되는 수산화칼슘과 반응하여 시멘트-물과의 반응에서와 유사한 반응을 하며 이로부터 생성된 물질이 토양고화 강도를 부여한다.As the cement used in the present invention, all conventional cements may be used, but portland cement is preferably used. In general, when pozzolanics such as fly ash or blast furnace sulag are mixed with portland cement, these pozzolanes react with calcium hydroxide freed from the cement, reacting similarly to the reaction with cement-water, and the material produced therefrom is soil solidification strength. To give.

포졸란 성분과 혼화된 시멘트와 석고가 반응하면 다량의 에트린가아트(etringite, 3CaOㆍAl2O3ㆍ3CaSO4ㆍ32H2O)를 생성하는데, 이 성분이 다량의 물을 결합수로서 취하여 함수비를 저하시킴과 동시에 토립자의 이동을 억제하는 역할을 하게 되어 시멘테이션(cementation)을 용이하게 한다.Pozzolanic component and mixing the cement with if gypsum is the reaction a large amount of Et ringa art, to produce a (etringite, 3CaO and Al 2 O 3 and 3CaSO 4 and 32H 2 O) are components of the water content by taking a number of binding a large amount of water At the same time it serves to suppress the movement of the granules while facilitating cementation.

그리고, 시멘트 내에 함유된 수산화칼슘 또는 규산칼슘은 이로부터 용출되는 칼슘이온(Ca++)이 토립자를 응집시키는 역할을 하며, 이중 규산칼슘에 의하여 수화물이 생성되어 토양의 고화강도를 더욱 상승시키는 역할을 한다. 또한, 장기 재령으로 흙속에 함유된 SiO2와 Al2O3등의 가용성분이 수산화칼슘과 불용성의 수화물을 생성하여 포졸란을 활성화시켜 경화를 촉진시킨다.In addition, calcium hydroxide or calcium silicate contained in cement serves to agglomerate the calcium ions (Ca ++) eluted therefrom, and hydrates are formed by the calcium silicate to further increase the solidification strength of the soil. In addition, soluble components such as SiO 2 and Al 2 O 3 contained in the soil at long-term ages produce calcium hydroxide and insoluble hydrates to activate pozzolanicity to promote curing.

그러나, 일반적으로 이와 같은 포졸란 반응은 매우 반응속도가 느리므로, 경화반응속도를 촉진시키고 초기 강도를 증진시키며 노상처리시 동결방지를 위하여 본 발명에서는 염화칼슘을 첨가한다. 염화칼슘은 흔히 모르터나 콘트리트의 흡수성이나 투수성을 감소시키는 무기계 흡수제로 사용되고 있다.However, in general, such a pozzolanic reaction is very slow, and thus, calcium chloride is added in the present invention to accelerate the curing reaction rate, enhance initial strength, and prevent freezing during hearth treatment. Calcium chloride is commonly used as an inorganic absorbent to reduce the absorption and permeability of mortars and concretes.

또한, 시멘트의 입자를 분산시켜 콘크리트의 단위수량을 감소시키고 작업성(workability)을 양호케하여 경화강도를 증대시킬 수 있도록 감수제(water reducing agent)로서 리그닌술폰산(lignine sulfonate)을 첨가한다.In addition, lignin sulfonate is added as a water reducing agent to disperse the particles of cement to reduce the unit quantity of concrete, improve workability, and increase hardening strength.

한편, 일반적으로 석회나 석고는 수경성 물질로서 함수량이 많은 토양을 고화시키는데 효과적이다.On the other hand, lime or gypsum is generally used as a hydraulic material to solidify soils with high water content.

이와 같은 성분을 첨가하여 토양고화제를 제조하는 바, 그 방법은 석회, 염화칼슘, 황산나트륨, 리그닌술폰산 및 석고와 같은 보조성분을 혼합하여 제1혼합물을 제조하고, 이와는 별도로 시멘트, 플라이애쉬 및 고로 슬래그를 혼합하여 제2혼합물을 제조한 다음, 이들 제1혼합물과 제2혼합물을 혼합하여 괴상체를 생성하고 이를 미분쇄하면 된다. 이때, 분쇄기로는 진동볼밀기가 바람직하다.Soil hardening agent is prepared by adding such components, and the method comprises mixing auxiliary components such as lime, calcium chloride, sodium sulfate, lignin sulfonic acid and gypsum to prepare a first mixture, and separately cement, fly ash and blast furnace slag. To prepare a second mixture, and then mix the first mixture and the second mixture to form a mass and finely pulverize it. At this time, the grinding ball mill is preferably a vibrating ball mill.

혼합시 각 성분의 함량은 석회 0.1~1.0중량%, 염화칼슘 0.2~2.0중량%, 황산나트륨 0.05~0.5중량%, 리그닌술폰산 0.01~1.0중량%, 석고 0.5~2중량%, 시멘트90.0~97,6중량%, 플라이애쉬 1.0~2.0중량% 및 고로 슬래그를 0.5~1.5중량% 되도록 혼합하면 좋다.When mixed, the content of each component is 0.1 to 1.0% by weight lime, 0.2 to 2.0% by weight calcium chloride, 0.05 to 0.5% by weight sodium sulfate, 0.01 to 1.0% by weight lignin sulfonic acid, 0.5 to 2% by weight gypsum, 90.0 to 97,6 weight %, Fly ash 1.0 to 2.0% by weight and blast furnace slag may be mixed so as to 0.5 to 1.5% by weight.

이와 같이 제조된 토양고화제의 경우 플라이애쉬나 고로 슬래그 등의 각각의 성분을 개개로 첨가시킬 때에 비하여 장도가 증대되고, 경화시간을 단축시킬 수 있다.In the case of the soil hardener prepared as described above, the elongation can be increased and the curing time can be shortened as compared with adding each component such as fly ash or blast furnace slag individually.

이하, 본 발명을 실시예에 의거 상세히 설명하면 다음과 같으며, 또한 본 발명은 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to the following Examples, and the present invention is not limited by the Examples.

실시예Example

제1혼합물(중량%)First mixture (% by weight)

석회0.675Lime 0.675

염화칼슘0.5Calcium chloride0.5

황산나트륨0.17Sodium Sulfate0.17

리그닌술폰산0.23Lignin sulfonic acid0.23

석고0.8Gypsum0.8

제2혼합물(중량%)Second mixture (% by weight)

포틀랜트 시멘트94.5Portland Cement94.5

플라이애쉬2.105Fly Ash2.105

고로 술래그1.0Blast Furnace 1.0

상기 제1혼합물의 각 성분을 균일하게 혼합하고, 이와는 별도로 제2혼합물의 각 성분을 균일하게 혼합한 다음, 제1혼합물을 제2혼합물에 가하여 다시 균일하게 혼합하여 괴상체를 생성하였다. 생성된 괴상체를 진동볼밀기에 넣고 비표면적이 4,000cm2/g 이상 되게 미분말화시켜 본 발명의 토양고화제를 제조하였다.Each component of the first mixture was uniformly mixed, and separately, each component of the second mixture was uniformly mixed, and then the first mixture was added to the second mixture and uniformly mixed again to form a mass. The resulting mass was placed in a vibrating ball mill and finely powdered to have a specific surface area of 4,000 cm 2 / g or more to prepare a soil hardener of the present invention.

실험예Experimental Example

상기 실시예에 따라 제조된 토양고화제에 대하여 모래 13%, 실티(모래와 점토의 중간입자 크기, silty42% 점토 45%로 이루어지며, 자연함수량이 33.8%, 밀도 0.832g/cm2이고, 일축압축강도는 0.28kgf/cm2를 처리한 토양조건에서 성능시험을 실시하였다.For the soil hardening agent prepared according to the above example, 13% of sand, silty (medium particle size of sand and clay, silty42% of clay, 45%), natural content of 33.8%, density of 0.832 g / cm 2 , uniaxial The compressive strength was tested in soil conditions treated with 0.28 kgf / cm 2 .

성능시험은 상기한 토양조건에서 본 발명의 토양고화제를 사용한 토양과 포틀랜트 시멘트 단독으로 사용한 토양과의 일축압축강도 및 경화시간을 측정하는 방법으로 실시하였으며, 그 결과 본 발명에서와 같이 염화칼슘과 리그닌술폰산을 함유한 토양고화제를 100kg/cm2처리한 토양이 포틀랜즈 시멘트 150kg/m2를 처리한 토양보다 토양의 일축압축강도가 크고, 경화시간이 훨씬 단축되었다.The performance test was carried out by measuring the uniaxial compressive strength and curing time between the soil using the soil solidifying agent of the present invention and the soil using Portland cement alone under the above soil conditions, and as a result, calcium chloride and The soil treated with 100 kg / cm 2 of soil hardener containing lignin sulfonic acid had a higher uniaxial compressive strength and a shorter curing time than the soil treated with 150 kg / m 2 of Portland cement.

이상에서 상세히 설명한 바와 같이, 본 발명의 토양고화제는 고강도이며, 경화시간이 짧아 도로시공시에 노반의 토질을 강화시키는데 우수한 성능을 발휘하게 됨은 물론 옹벽, 갯벌, 하수관 매설, 주택시공, 공원 및 운동장 등의 구조물의 기초지반 개량, 성토, 절토시 경사면의 침식방지처리, 오니, 헤도로(섞은 흙) 등의 원위치 고화, 산업폐기물의 무해화를 목적으로 한 안정처리 및 각종 연약토질 지반의 안정처리 등에 대단히 우수한 성능을 발휘하게 되므로 산업발전에 크게 이바지할 뿐만 아니라 플라이애쉬, 고로 슬리그와 같은 산업폐기물을 산업원재료로 유용하게 대량 사용함으로써 자연환경보호에도 크게 이바지할 수 있다.As described in detail above, the soil hardener of the present invention has a high strength and a short curing time, thereby exhibiting excellent performance in reinforcing the roadbed during road construction, as well as retaining walls, mud flats, sewer pipes, housing construction, parks and playgrounds. Improvement of basic ground of structures, prevention of erosion of slopes during filling, cutting, in-situ solidification of sludge, hedo (mixed soil), stabilization treatment for the purpose of harmless industrial waste, and stable treatment of various soft soils As it shows excellent performance on the back, it not only contributes greatly to the industrial development but also contributes to the protection of the natural environment by using a large amount of industrial wastes such as fly ash and blast furnace slug as industrial raw materials.

Claims (2)

석회 0.1~1.0중량%, 염화칼슘 0.2~2.0중량%, 황산나트륨, 0.05~0.5중량%, 리그닌술폰산 0.01~1.0중량% 및 석고 0.5~2중량%로 이루어진 제1혼합물과 시멘트 90.0~97.6중량%, 플라이애쉬 1.0~2.5중량% 및 고로 슬래그 0.5~1.5중량%로 이루어진 제2혼합물을 혼합하여 이루어진 토양고화제.0.1 to 1.0% by weight of lime, 0.2 to 2.0% by weight of calcium chloride, sodium sulfate, 0.05 to 0.5% by weight, first mixture consisting of 0.01 to 1.0% by weight of lignin sulfonic acid and 0.5 to 2% by weight of gypsum and 90.0 to 97.6% by weight of cement, ply Soil hardener made by mixing a second mixture consisting of ash 1.0 ~ 2.5% by weight and blast furnace slag 0.5 ~ 1.5% by weight. 석회, 염화칼슘, 황산나트륨, 리그닌술폰산 및 석고를 혼합하여 제1혼합물을 제조하는 방법, 이와는 별도로 시멘트, 플라이애쉬 및 고로 슬래그를 혼합하여 제2혼합물을 제조하는 공정, 및 상기 제1혼합물과 제2혼합물을 혼합하여 괴상체를 생성하고 이를 미세분말화하는 공정으로 이루어진 토양고화제의 제조방법.Method for preparing a first mixture by mixing lime, calcium chloride, sodium sulfate, lignin sulfonic acid and gypsum, and separately from the cement, fly ash and blast furnace slag to prepare a second mixture, and the first mixture and the second mixture Method of producing a soil hardener comprising the steps of mixing to form a mass and finely powder it.
KR1019930028841A 1993-12-21 1993-12-21 Soil stabilizer and process thereof KR0125466B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101682142B1 (en) * 2016-09-02 2016-12-13 유한회사 드림위즈 Construction method using the composition for light load street
CN107620238A (en) * 2017-10-17 2018-01-23 中国石油大学(华东) A kind of Subgrade Filled Soil in High Speed Railway and preparation method based on lignin curing agent
KR102377413B1 (en) * 2021-12-22 2022-03-22 주식회사 하림엔지니어링 Composite of Eco Friendly Ground Hardening Materials Having High Strength and Constructing Methods Using Thereof

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Publication number Priority date Publication date Assignee Title
KR100314978B1 (en) * 1996-12-14 2002-04-06 김진회 Hedro conditioner based on lime byproduct
KR100230022B1 (en) * 1997-10-11 1999-12-01 백운 Earthen brick and its manufacturing method
KR100374189B1 (en) * 2000-12-20 2003-03-04 한일시멘트 (주) The manufacturing method for soil stabilization
KR100423410B1 (en) * 2001-06-20 2004-03-18 재단법인 포항산업과학연구원 Stabilization material of sewage sludge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101682142B1 (en) * 2016-09-02 2016-12-13 유한회사 드림위즈 Construction method using the composition for light load street
CN107620238A (en) * 2017-10-17 2018-01-23 中国石油大学(华东) A kind of Subgrade Filled Soil in High Speed Railway and preparation method based on lignin curing agent
KR102377413B1 (en) * 2021-12-22 2022-03-22 주식회사 하림엔지니어링 Composite of Eco Friendly Ground Hardening Materials Having High Strength and Constructing Methods Using Thereof

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