KR101863673B1 - A high moisture soil solidification stabilizer and the progessing method thereof and the treatment method of high moisture soils - Google Patents
A high moisture soil solidification stabilizer and the progessing method thereof and the treatment method of high moisture soils Download PDFInfo
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Abstract
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본 발명은 토목 및 건축공사 등 건설현장에서 발생되는 준설토사나 준설오니 등을 비롯한 고함수토를 개질안정처리하여 성토재나 복토재, 매립재, 되메움재 등으로 재활용가능하도록 하는 개질안정처리제와 그 제조방법 및 이를 이용한 고함수토의 처리방법에 관한 것으로서, 더욱 상세하게는 산화마그네슘(MgO) 25 ~ 35중량%와 산화칼슘(CaO) 10 ~ 20중량%와 벤토나이트 30 ~ 40중량%와 탄산칼슘(CaCO3) 15 ~ 30중량%로 이루어진 수분조절재 7 ~ 12중량부와, 양이온계 또는 음이온계 고분자응집제 0.1 ~ 5중량부와, 강도증진용 고화재 4 ~ 10중량부의 비율로 혼합된 고함수토용 개질안정처리제를 제조하고, 이를 고함수토에 일정비율로 혼합하여 고함수토를 처리하는 것을 특징으로 하는 고함수토용 개질안정처리제와 이를 이용한 고함수토의 처리방법에 관한 것이다.The present invention relates to a modified stabilization treatment agent capable of modifying and stabilizing highly functional soils such as dredged soil and dredged sludge generated at construction sites such as civil engineering and building construction to be recycled as embankment materials, fillers, fillers, backfill materials and the like More particularly, the present invention relates to a method for treating a high-strength soil using 25 to 35% by weight of magnesium oxide, 10 to 20% by weight of calcium oxide (CaO), 30 to 40% by weight of bentonite, 3 ) 7 to 12 parts by weight of a moisture control material consisting of 15 to 30% by weight, 0.1 to 5 parts by weight of a cationic or anionic polymer flocculant, and 4 to 10 parts by weight of a fire retardant for reinforcing strength, The present invention also relates to a process for treating a high solids soil and a method for treating a high solids soil using the same.
일반적으로 토목공사(항만건설, 교량건설, 댐건설, 저수지준설, 하상준설, 하수도준설 등)과 건축공사(항만배후단지조성, 하수종말처리장건설, 산업단지와 공업단지조성 등)의 모든 건설현장에서 준설토사나 준설오니, 굴착배출토 등의 고함수토가 발생되며, 상기 고함수토는 통상적으로 함수비(moisture content)가 500 ~ 700%이고 콘지수가 200kN/㎡미만 또는 단위압축강도가 0.5kgf/㎠ 이하인 니상(泥狀)의 준설토로서 이용목적에 따라 그 성상을 개질처리함으로써 성토재나 복토재 등의 다양한 용도로 재활용할 수 있는 자원으로 사용될 수 있다. In general, all construction sites (construction of ports, bridge construction, dam construction, dredging of reservoirs, dredging of docks, dredging of sewerage, sewage dredging, etc.) and construction works (construction of port harbor complex, construction of sewage terminal treatment plant, industrial complex and industrial complex, etc.) The soil having high moisture content is 500 to 700% and the cone index is less than 200 kN / m 2 or the unit compressive strength is 0.5 kgf / Cm < 2 > or less and can be used as a resource that can be recycled for various purposes such as an embankment and a cover material by modifying the properties of the dredged soil according to the purpose of use.
그러나, 상기 고함수토는 매우 높은 함수비를 지니고 있어 이를 재활용하기 위하여는 탈수처리단계, 건조처리단계, 고화처리단계 등의 여러 단계별 처리절차를 거침에 따라 처리기간의 장기화 및 처리비용의 증대로 인해 현실적으로 재활용되지 못하고 대부분 해양에 그대로 투기되고 있는 실정이다.However, since the high-boiling soot has a very high water content, there is a problem that it takes a long time to process and increase the processing cost due to various steps of the dehydration treatment step, the drying treatment step and the solidification treatment step in order to recycle it. In reality, it is not recycled, and most of it is being dumped in the ocean.
이러한 문제점을 개선하기 위한 종래기술로서 대한민국 등록특허공보 등록번호 제 10-0881149호에서는 석회계 고화재 1 ~ 15중량부와; 폴리아크릴아미드(polyacrylamide)계로 구성되는 고분자 응집제 0.01 ~ 1중량부 및; 실리카(SiO2 ) 20중량%, 나프탈렌(C10H8) 10중량%, 염화칼륨(KCl) 25중량%, 염화마그네슘(MgCl) 20중량%, 석회(CaO) 25중량%로 구성되는 무기계 경화제 0.05 ~ 0.1중량부로 구성됨을 특징으로 하는 고함수 준설니토 고화용 안정재가 개시되었다.As a conventional technique for solving such a problem, Korean Registered Patent Publication No. 10-0881149 discloses that 1 ~ 0.01 to 1 part by weight of a polymer flocculant composed of a polyacrylamide system; Silica (SiO 2) 20% by weight, and naphthalene (C 10 H 8) 10% by weight, potassium chloride (KCl) 25% by weight, of magnesium chloride (MgCl) 20% by weight of lime (CaO) inorganic hardener 0.05 consisting of 25% by weight To 0.1 part by weight based on the total weight of the composition.
그러나, 상기 종래기술은 준설니토에 고화용 안정재를 첨가시 함수비가 저하된다고만 기재되어 있을 뿐 구체적으로 경과시간에 따른 함수비의 변화량에 관한 실험결과가 결여되어 있어 실제 함수비가 저하되는지 여부를 전혀 파악할 수 없으며, 상기 고화용 안정재의 주성분으로 사용되는 석회계 고화재의 경우 발명의 구성에 이를 구성하는 성분들만 단순 나열되어 있을 뿐 각 성분들의 구체적인 배합비율이 결여되어 있는 것이어서 이 기술분야에 속한 통상의 기술자가 이를 통해 석회계 고화재를 제조할 수 없어 실제적으로 실현불가능한 미완성발명이라 하겠습니다.However, in the above-mentioned prior art, only when the stabilizing stabilizer is added to the dredged soil, it is stated that the water content is lowered. In particular, since there is no experimental result about the variation of the water content with the elapsed time, In the case of a lime-based fireproofing material used as a main component of the above-described stabilizing stabilizer, only the components constituting the lime-based fireproofing composition are listed in the invention, but the specific proportion of each component is lacking. In this way, we can not manufacture lime-based fire alarms, which is an unfinished invention that can not be practically realized.
본 발명은 상기와 같은 문제점을 개선하기 위한 것으로 높은 함수비를 지닌 고함수토의 수분을 흡수하여 단시간내에 함수비를 낮추기 위한 수분조절재와, 매우 높은 슬럼프값을 지닌 고함수토에 응결력과 응집력을 부여하여 토양입자를 단립화(單粒化)시키기 위한 고분자응집제와, 개질안정처리된 토양에 일정강도를 부여하기 위한 강도증진용 고화재를 일정비율로 혼합하여 개질안정처리제를 제조하며, 상기와 같이 제조된 개질안정처리제를 고함수토에 일정비율로 혼합하여 고함수토를 개질안정처리하는 것에 그 목적이 있다. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a moisture regulator for lowering the water content in a short time by absorbing moisture of a high water content soil having a high water content and a cohesive force and a cohesive force in a high water content soil having a very high slump value A polymer flocculant for making the soil particles monolithic and a fire retardant for improving the strength for imparting a certain strength to the soil subjected to the reforming treatment are mixed at a certain ratio to prepare a modified stabilization treating agent, The present invention is directed to a method for stabilizing and modifying a high hydrous soil by mixing the modified hydrolysis stabilizer with a high hydrous soil at a predetermined ratio.
이러한 목적을 달성하기 위하여 산화마그네슘(MgO) 25 ~ 35중량%와 산화칼슘(CaO) 10 ~ 20중량%와 벤토나이트 30 ~ 40중량%와 탄산칼슘(CaCO3) 15 ~ 30중량%로 이루어진 수분조절재 7 ~ 12중량부와, 양이온계 또는 음이온계 고분자응집제 0.1 ~ 5중량부와, 강도증진용 고화재 4 ~ 10중량부의 비율로 혼합된 고함수토용 개질안정처리제를 제조하는 것에 본 발명의 특징이 있다. In order to achieve this purpose, it is necessary to control the moisture content of magnesium oxide (MgO) in an amount of 25 to 35 wt%, calcium oxide (CaO) in 10 to 20 wt%, bentonite in 30 to 40 wt% and calcium carbonate (CaCO 3 ) in 15 to 30 wt% The present invention relates to a process for producing a modified stabilization treatment agent for a high boiler mixed with 7 to 12 parts by weight of ash, 0.1 to 5 parts by weight of a cationic or anionic polymer flocculant, and 4 to 10 parts by weight of a fire retarding fire retardant, .
또한, 고함수토의 습윤단위체적중량 100중량부에 대하여 일정비율로 고함수토용 개질안정처리제를 혼합하여 고함수토를 개질안정처리하는 것에 본 발명의 또 다른 특징이 있다.Another feature of the present invention is that the high-hydrous soil modification-stabilization treatment agent is mixed at a certain ratio with respect to 100 parts by weight of the wet unit volume weight of the high hydrous soil to thereby modify and stabilize the hydrous soil.
상기와 같이 본 발명에 의하면 높은 함수비를 지닌 고함수토의 수분을 흡수하여 단시간내에 함수비를 낮추기 위한 수분조절재와, 매우 높은 슬럼프값을 지닌 고함수토에 응결력과 응집력을 부여하여 토양입자를 단립화(單粒化)시키기 위한 고분자응집제와, 개질안정처리된 토양에 일정강도를 부여하기 위한 강도증진용 고화재가 일정비율로 혼합되어 개질안정처리제가 제조되고, 상기와 같이 제조된 개질안정처리제를 대략 700%의 함수비를 지닌 고함수토에 일정비율로 혼합하면 2 ~ 4일내 함수비가 80% 정도로 단시일내에 낮아져 반출가능하며, 토양의 입자가 단립화되면서 단위압축강도가 높아지고 슬럼프값이 낮아져 습지조성용 성토재, 항만부지의 매립이나 저습지 식생지반 매립재, 연약지반 개량이나 쓰레기 매립장 등의 복토재, 각종 구조물의 되메움재 등으로 사용하기 적합한 개질안정토를 제조할 수 있는 효과가 있다. As described above, according to the present invention, the moisture regulator for lowering the water content in a short period of time by absorbing the moisture of the high-moisture soil having a high water content and the cohesive force and the cohesive force to the high- A stabilizing treatment agent is prepared by mixing a polymer flocculant for stabilizing the flocculant and a stabilizer for strengthening the flocculant to give a constant strength to the soil subjected to the stabilization treatment, When mixed at a certain ratio in a high-function soil having a water content of about 700%, the water content can be lowered within a short period of time of about 80% within 2 to 4 days. As the soil particles become monolithic, the unit compressive strength becomes higher and the slump value becomes lower. Landfill of harbor site, landfill material of wetland vegetation, landfill material such as improvement of soft soil and landfill, and various structures. It is possible to produce a modified stable soil suitable for use as a filler or the like.
도 1은 본 발명에 따른 개질안정처리제를 고함수토에 혼합시 경과시간별 함수비의 변화량을 나타낸 그래프
도 2는 본 발명에 따른 개질안정처리제를 고함수토에 혼합시 고화재의 배합비에 따른 단위압축강도의 변화량을 나타낸 그래프
도 3은 본 발명에 따른 개질안정처리제를 고함수토에 혼합하기 전,후의 입도변화를 나타낸 그래프1 is a graph showing changes in the water content by time elapsed when the modified stabilizing agent according to the present invention is mixed with a high-
Fig. 2 is a graph showing the change in unit compressive strength according to the blending ratio of the fireproofing agent when the modified stabilizing agent according to the present invention is mixed with the high-
3 is a graph showing changes in particle size before and after mixing the modified stabilization treatment agent according to the present invention with the high-
이하 본 발명에 따른 구체적인 구성을 상세히 설명하면 다음과 같다.Hereinafter, a detailed configuration according to the present invention will be described in detail.
본 발명에 따른 고함수토용 개질안정처리제와 이를 이용하여 고함수토를 처리하는 방법은 항만공사, 교량공사, 준설공사를 비롯한 토목공사와 건축공사 등의 건설현장에서 발생되는 준설토사나 준설오니 등의 고함수토를 개질안정처리하여 성토재나 복토재, 매립재, 되메움재 등으로 재활용가능하게 하는 것으로, 산화마그네슘(MgO) 25 ~ 35중량%와 산화칼슘(CaO) 10 ~ 20중량%와 벤토나이트 30 ~ 40중량%와 탄산칼슘(CaCO3) 15 ~ 30중량%로 이루어진 수분조절재 7 ~ 12중량부와, 양이온계 또는 음이온계 고분자응집제 0.1 ~ 5중량부와, 강도증진용 고화재 4 ~ 10중량부의 비율로 혼합된 고함수토용 개질안정처리제를 제조하고, 이를 고함수토에 일정비율로 혼합함으로써 개질안정토로 만들어 재활용하도록 되어 있다.The modified stabilization treatment agent for the high-function soils according to the present invention and the method for treating the high-moisture tofu using the same can be used for dredging soil and dredged sludge generated at construction sites such as port construction, bridge construction, dredging construction, (25 to 35% by weight of magnesium oxide (MgO), 10 to 20% by weight of calcium oxide (CaO), and bentonite 30 7 to 12 parts by weight of a moisture control material consisting of 40 to 40% by weight of calcium carbonate and 15 to 30% by weight of calcium carbonate (CaCO 3 ), 0.1 to 5 parts by weight of a cationic or anionic polymer flocculant, By weight based on the total weight of the modified high strength soot and the high strength soot is mixed with the high hydrotreated soil at a predetermined ratio to make the reformed stabilized soil to be recycled.
상기 수분조절재는 통상적으로 500 ~ 700%의 고함수비를 지닌 고함수토를 단시간내에 저함수비를 지니도록 수분을 저하시키는 부분으로, 산화마그네슘(MgO) 25 ~ 35중량%와 산화칼슘(CaO) 10 ~ 20중량%와 벤토나이트 30 ~ 40중량%와 탄산칼슘(CaCO3) 15 ~ 30중량%로 이루어지며, 상기 수분조절재는 개질안정처리제의 전체 중량에 대하여 7 ~ 12중량부의 비율로 첨가 혼합되도록 되어 있는데, 수분조절재가 7중량부 미만의 비율로 첨가되면 고함수토의 함수비 저하율이 떨어져 반출가능함수비에 도달하기까지 오랜시간이 소요되는 문제점이 있고 12중량부를 초과하는 비율로 첨가되면 고함수토의 수분이 너무 과다하게 흡수되어 성토재나 복토재의 용도로 부적합하게 되는 문제점이 발생된다. The moisture control material is a part which lowers the water content so as to have a low water content within a short period of time, typically 25 to 35% by weight of magnesium oxide (MgO) and calcium oxide (CaO) 10 To 20 wt%, bentonite 30 to 40 wt% and calcium carbonate (CaCO 3 ) 15 to 30 wt%, and the moisture control agent is added and mixed in a proportion of 7 to 12 parts by weight based on the total weight of the modified stabilizing agent However, when the water control agent is added in a proportion of less than 7 parts by weight, the rate of decreasing the water content of the high-moisture soil is lowered, and it takes a long time to reach the water content that can be taken out. When the water content is more than 12 parts by weight, There is a problem in that it is absorbed too much and becomes unsuitable for use as embalming material or cover material.
상기 산화마그네슘(MgO)은 고토(苦土)라고도 하며 공업적으로는 마그네시아라고 불리우며, 백색의 비결정성 분말로서 분자량 40.32, 녹는점 2,800℃, 끓는점 3,600℃, 비중 3.2 ~ 3.7이며, 공기 중에서 물 및 이산화탄소를 흡수하는 성질을 지니고 있어 흡착제 등의 용도로 사용되고, 본 발명에서는 고함수토의 수분을 흡수하면서 중금속을 흡착하여 정화처리하기 위해 수분조절재의 전체 중량에 대하여 산화마그네슘 25 ~ 35중량%가 혼합되는데, 산화마그네슘이 25중량% 미만으로 첨가되면 수분흡수율과 중금속의 흡착율이 크게 저하되는 문제점 발생되고 35중량%를 초과하여 첨가되면 팽창 및 균열현상을 일으키면서 개질안정토의 장기강도를 저하시키고 물과 반응시 과량의 수산화마그네슘을 발생시키면서 고함수토의 pH를 상승시켜 강알칼리성을 띄게 함으로써 개질안정토를 성토재나 매립재 등으로 사용하기 어렵게 되는 문제점이 발생된다.The above-mentioned magnesium oxide (MgO) is also referred to as goto (industrially) magnesia and is a white amorphous powder having a molecular weight of 40.32, a melting point of 2,800 ° C, a boiling point of 3,600 ° C, a specific gravity of 3.2 to 3.7, In the present invention, 25 to 35% by weight of magnesium oxide is mixed with respect to the total weight of the moisture control material in order to adsorb and purify heavy metals while absorbing moisture of the high moisture soil, because they have the property of absorbing carbon dioxide If magnesium oxide is added in an amount of less than 25% by weight, the water absorption rate and the adsorption rate of heavy metals are significantly lowered. If the magnesium oxide is added in an amount exceeding 35% by weight, expansion and cracking are caused, The pH of the high-moisture soil is raised to produce strong alkalinity while generating an excessive amount of magnesium hydroxide So that it becomes difficult to use the modified stabilized soil as an embankment or a buried material.
상기 산화칼슘(CaO)은 백색의 등축 결정계 분말상태로 공기중에서 수분과 이산화탄소를 흡수하여 수산화칼슘(소석회)과 탄삼칼슘을 생성하되 물과 반응하여 다량의 열을 발생시키면서 수산화칼슘을 생성하며, 석회비료, 산성토양 개량제, 수분포집제로서의 건조제, 시멘트의 원료 등으로 사용되고, 본 발명에서는 고함수토의 물과 반응하여 수산화칼슘(Ca(OH)2)을 생성하는 과정에서 토립자 사이의 수분을 흡수, 팽창하여 발열반응을 일으켜 수분을 신속하게 흡수하는 역할을 수행하며 이를 위해 수분조절재의 전체 중량에 대하여 산화칼슘 10 ~ 20중량%가 혼합되는데, 산화칼슘이 10중량% 미만으로 참가되면 수분흡수 등의 효과가 미흡하여 고함수토의 함수비를 신속하게 낮추기 어려우며 20중량%를 초과하면 반응생성물로서 과량의 수산화칼슘이 생성되면서 고함수토의 pH를 상승시켜 강알칼리성을 띄게 함으로써 개질안정토를 성토재나 매립재 등으로 사용하기 어렵게 되는 문제점이 발생된다.The calcium oxide (CaO) absorbs water and carbon dioxide in the air to form calcium hydroxide (calcium hydroxide) and tansan calcium, and generates calcium hydroxide while generating a large amount of heat by reacting with water. In the present invention, in the process of generating calcium hydroxide (Ca (OH) 2 ) by reacting with water of a high humid soil, moisture between the particles is absorbed and expanded to generate heat The water is rapidly absorbed by causing a reaction. For this purpose, 10 to 20% by weight of calcium oxide is mixed with the total weight of the moisture control material. When calcium oxide is incorporated in an amount of less than 10% by weight, So that it is difficult to rapidly lower the water content of the high-solids soil. When the water content exceeds 20% by weight, excess calcium hydroxide is produced as a reaction product It is difficult to use the modified stabilized soil as the embankment or the embedding material by increasing the pH of the soil to increase the alkalinity.
상기 벤토나이트는 팽창성, 점결성, 농후성의 물리적 성질을 지니고 있어 물과 반응하여 팽창하면서 물을 흡수하고 팽창된 벤토나이트는 겔화되어 물을 배척하여 차수(遮水)하는 성질을 지니고 있으며 다른 물질과 혼합되어 다른 물질을 서로 점결시키거나 농축하도록 되어 있어 토목기초공사에서 지하수의 차단이나 측벽 붕괴 방지의 목적으로 주로 사용되며, 본 발명에서는 수분조절재의 전체 중량에 대하여 벤토나이트 30 ~ 40중량%가 혼합되어 고함수성인 고함수토의 수분을 신속하게 흡수하여 취급성을 향상시키도록 되어 있고 상기 벤토나이트는 평균입도가 1 ~ 100㎛ 정도를 지니도록 분말화된 것을 사용하도록 되어 있는데, 벤토나이트가 30중량% 미만으로 첨가되면 수분흡수 등의 효과가 미흡하여 고함수토의 함수비를 신속하게 낮추기 어려우며 40중량%를 초과하여 첨가하면 수분흡수율은 양호하나 점착력이 강해져 교반효율이 저하되면서 토사 단립체가 균일한 크기로 형성되지 않고 불균일한 크기를 지닌 덩어리 상태로 형성되어 개질안정토의 단위압축강도 등이 저하되는 문제점이 발생된다. The bentonite has physical properties of expansive, cohesive, and rich. It absorbs water while expanding by reacting with water, and the expanded bentonite is gelled to reject water and mixes with other materials. In the present invention, 30 to 40% by weight of bentonite is mixed with the total weight of the moisture control material to form a highly functional granule The bentonite is powdered so as to have an average particle size of about 1 to 100 mu m. When the bentonite is added in an amount of less than 30 wt%, water It is difficult to lower the water content of the soil with high water content rapidly. If it is added in an amount exceeding 0% by weight, the water absorption rate is good, but the adhesive strength becomes strong, and the stirring efficiency is lowered, so that the soil paraffin aggregate is not formed in a uniform size, but is formed into a lump state having a nonuniform size, .
상기 탄산칼슘(CaCO3)은 산화마그네슘과 산화칼슘의 수화반응시 생성되는 알칼리성의 수산화마그네슘과 수산화칼슘 및 강도증진용 고화재를 중화처리하여 개질안정토가 알칼리성을 띄지 않도록 하며, 본 발명에서는 수분조절재의 전체 중량에 대하여 탄산칼슘(CaCO3) 15 ~ 30중량%를 첨가하는데, 상기 탄산칼슘이 15중량% 미만으로 첨가되면 중화처리효과가 미흡하고 30중량%를 초과하면 개질안정토가 산성을 띄어 성토재나 매립재 등의 용도로 사용하기 부적합하게 된다.The above-mentioned calcium carbonate (CaCO 3 ) neutralizes alkaline magnesium hydroxide, calcium hydroxide and hardening fire which are generated in the hydration reaction of magnesium oxide and calcium oxide, so that the modified stable soot does not become alkaline. In the present invention, 15 to 30 wt% of calcium carbonate (CaCO 3 ) is added relative to the total weight of the ash. When the amount of the calcium carbonate is less than 15 wt%, the effect of neutralization is insufficient. When the amount of the calcium carbonate is more than 30 wt% It becomes unsuitable for use as an embedding material or a filling material.
또한, 상기 수분조절재는 필요에 따라 산화칼륨(K2O) 0.2 ~ 1.2중량%와 산화나트륨(Na2O) 0.1 ~ 1중량%가 포함되어 구성될 수 있는데, 상기 산화칼륨(K2O)은 백색의 분말형태로 흡습성이 있으며 물과 반응하여 수산화칼륨을 생성하면서 개질안정토에 포함된 상태로 지력을 증진시키는 효과를 나타내도록 되어 있으며, 본 발명에서는 수분조절재의 전체 중량에 대하여 산화칼륨 0.2 ~ 1.2중량%가 혼합되어 수분흡수 및 지력증진 효과를 높이도록 되어 있으며, 상기 산화나트륨(Na2O)은 백색의 분말형태로 흡습성이 있으며 물과 반응하여 수산화나트륨을 생성하면서 탈수제로 작용하도록 되어 있으며, 본 발명에서는 수분조절재의 전체 중량에 대하여 산화나트륨 0.1 ~ 1.0중량%가 혼합되어 수분흡수 효과를 높이도록 되어 있는데, 산화칼륨이 0.1중량% 미만으로 첨가되면 첨가량이 너무 적어 효과가 미흡하고 1.0중량%를 초과하여 첨가되면 고함수토 속에 포함된 유기물이나 산화성 물질과 반응하여 폭발성을 나타내는 문제점이 있다. The moisture regulator may comprise 0.2 to 1.2% by weight of potassium oxide (K 2 O) and 0.1 to 1% by weight of sodium oxide (Na 2 O), where the potassium oxide (K 2 O) Is in the form of a white powder and is hygroscopic. It reacts with water to produce potassium hydroxide, while exhibiting an effect of enhancing the intelligence in a state contained in the modified stable soil. In the present invention, potassium oxide 0.2 To 1.2% by weight is mixed to increase the water absorption and strengthening effect, and the sodium oxide (Na 2 O) is hygroscopic in the form of a white powder and reacts with water to act as a dehydrating agent while generating sodium hydroxide In the present invention, 0.1 to 1.0% by weight of sodium oxide is mixed with respect to the total weight of the moisture control material to enhance the water absorption effect. However, when potassium oxide is added in an amount of less than 0.1% by weight The added amount is too small to be effective, and if it is added in an amount exceeding 1.0% by weight, there is a problem that it is explosive due to reaction with organic substances or oxidizing substances contained in the soil having high water content.
상기 고분자응집제는 고함수토에 포함된 물속에서 토립자를 응집시켜 일정크기를 지닌 단립체를 형성하기 위해 첨가 혼합되는 부분으로, 고함수토에 존재하는 토립자는 일정한 전하를 띄고 있으며 이로 인해 토립자간 정전기적 반발력이 작용하여 일정시간이 경과되어도 침전하지 않고 콜로이드상태로 분산되어 있는데 이러한 고함수토에 고분자응집제가 일정비율로 첨가되면 유리수 중에 용해되어 확산되면서 고분자에 존재하는 흡착활성기가 정전기력 및 수소결합을 통해 토립자를 흡착하여 토립자간 가교작용을 일으켜 일정크기로 된 단립화구조를 형성하며 이 상태에서 수분조절재에 의해 유리수가 흡수되어 고함수토의 함수비가 급격하게 감소되도록 되어 있다. The polymer flocculant is a part that is added and mixed in order to aggregate the soil particles in the water contained in the high hydrous soil to form a monolith having a certain size. The soil particles present in the high water soot have a constant electric charge, When a certain amount of polymer flocculant is added to the solid soot, it is dissolved and diffused in the free water, so that the adsorptive active groups present in the polymer react with the electrostatic force and hydrogen bond And the soil is crossed by the soil particles to form a monolithic structure with a certain size. In this state, the water content is absorbed by the water control material, so that the water content of the high water content soil is drastically reduced.
또한, 상기 고분자응집제는 음이온계나 양이온계의 유기고분자응집제가 사용되며, 음이온계는 폴리아크릴아미드계 등이 사용되고, 양이온계 응집제로는 폴리비닐피리딘계, 디에틸아미노에틸메타크릴레이트(DM계 폴리머), 디에틸아미노에틸아크릴레이트(DA계 폴리머) 등이 사용된다. The polymer flocculant may be an anionic or cationic organic polymer flocculant, the anionic polymer may be polyacrylamide or the like, and the cation flocculant may be a polyvinylpyridine or diethylaminoethyl methacrylate (DM polymer ), Diethylaminoethyl acrylate (DA series polymer) and the like are used.
본 발명에서는 양이온계 또는 음이온계 고분자응집제가 개질안정처리제의 전체 중량에 대하여 0.1 ~ 5중량부의 비율로 첨가 혼합되도록 되어 있는데, 0.1중량부 미만의 비율로 첨가되면 토립자의 응집효과가 낮아 단립체가 형성되지 않거나 단립체의 응집력이 너무 약해 단위압축강도가 낮아지고 슬럼프값은 높아지며 5중량부를 초과하는 비율로 첨가되면 고분자응집제의 첨가량이 과량첨가에 따른 역효과로 응집성이 오히려 저하되면서 단립체의 형성을 저하시키는 문제점이 발생된다. In the present invention, the cationic or anionic polymer flocculant is added and mixed in a proportion of 0.1 to 5 parts by weight based on the total weight of the modified stabilizer. When the proportion is less than 0.1 part by weight, the flocculant effect of the soil particles is low, Or the cohesive strength of the monolithic body is too weak to lower the unit compressive strength and the slump value is increased. When the amount of the polymeric coagulant is more than 5 parts by weight, the addition amount of the polymer flocculant is adversely affected by excessive addition, .
상기 강도증진용 고화재는 0.5kgf/㎠ 이하의 낮은 단위압축강도를 지닌 고함수토가 성토재나 복토재, 되메움재 등의 용도로 사용가능하도록 단위압축강도를 향상시키는 부분으로, 이산화규소(SiO2) 20 ~ 30중량%와 산화알루미늄(Al2O3) 10 ~ 15중량%와 산화제이철(Fe2O3) 1.5 ~ 3중량%와 산화칼슘(CaO) 35 ~ 45중량%와 황산칼슘(CaSO4) 5 ~ 15중량%와 산화마그네슘(MgO) 3 ~ 5중량%와 삼산화황(SO3) 2 ~ 4중량%로 이루어지며, 상기 강도증진용 고화재는 개질안정처리제의 전체 중량에 대하여 4 ~ 10중량부의 비율로 첨가 혼합되도록 되어 있는데, 고화재가 4중량부 미만의 비율로 첨가되면 고함수토의 압축강도가 낮아 성토재나 복토재 등의 용도로 사용하기 어렵고 10중량부를 초과하는 비율로 첨가되면 첨가량 대비 강도증진의 효과가 미약할 뿐 아니라 개질안정토가 알칼리성화되어 성토재나 복토재 등의 용도로 사용하기 어렵게 된다.The reinforcing fire for strengthening the strength is a part which improves the unit compressive strength so that a high functional soil having a low unit compressive strength of 0.5 kgf / cm 2 or less can be used for an embankment, a filler, a filler, etc., and silicon dioxide 2 ) 20 to 30 wt%, aluminum oxide (Al 2 O 3 ) 10 to 15 wt%, iron oxide (Fe 2 O 3 ) 1.5 to 3 wt%, calcium oxide (CaO) 35 to 45 wt% CaSO 4) consists of 5 to 15% by weight of magnesium oxide (MgO) 3 ~ 5% by weight of sulfur trioxide (SO 3) 2 ~ 4 wt%, and for promoting the strength of fire is 4 with respect to the total weight of the modified stabilization agent To 10 parts by weight. When the fire retardant is added in a proportion of less than 4 parts by weight, the compressive strength of the high-hydrotreated soot is low, so that it is difficult to use it as a filler or a cover material. The effect of increasing the strength with respect to the addition amount is not only weak, So that it becomes difficult to use it as an embankment material or a cover material.
또한, 상기 강도증진용 고화재는 개질안정제의 산화칼슘(CaO)의 수화반응시 생성되는 강알칼리성인 수산화칼슘(Ca(OH)2)와 반응하여 경화가 촉진되면서 칼슘실리케이트수화물(Calcium silicate hydroxide gel, CSH(CaO-SiO2-H2O)gel)을 형성함에 따라 개질안정토의 결합력을 향상시키고 이와 함께 고함수토에 포함된 다량의 물과 산화칼슘과 산화알루미늄과 황산칼슘의 반응에 의해 침상의 결정체인 에트링자이트(Ettringite, 3CaO·Al2O3·3CaSO4·32H2O)를 형성하고 상기 에트링자이트가 망상으로 결합하면서 토립자의 이동을 구속하여 개질안정토의 강도가 신속하게 증가되도록 되어 있다. In addition, the hardening fire retardant is reacted with strongly alkaline calcium hydroxide (Ca (OH) 2 ) generated during the hydration reaction of the modified stabilizer calcium oxide (CaO) to accelerate curing, while calcium silicate hydrate (CaO-SiO 2 -H 2 O) gel), the bonding strength of the modified stabilized soil is improved. In addition, a large amount of water, calcium oxide, aluminum oxide, and calcium sulfate contained in the high- (Ettringite, 3CaO.Al 2 O 3 .3CaSO 4 .32H 2 O) is formed, and the migration of the soil particles is restrained while the etching ring is bound to the network so that the strength of the modified soil is rapidly increased .
이하 본 발명에 따른 구체적인 실시예는 다음과 같다.Hereinafter, specific embodiments according to the present invention will be described.
<실시예 1>≪ Example 1 >
산화마그네슘(MgO) 30중량%와 산화칼슘(CaO) 15중량%와 벤토나이트 35중량%와 탄산칼슘(CaCO3) 20중량%로 이루어진 수분조절재 0.7kg과, 폴리아크릴아미드계 음이온 고분자응집제 0.1kg과, 강도증진용 고화재 0.4kg을 혼합하여 고함수토용 개질안정처리제를 제조하였다. 0.7 kg of a moisture control material consisting of 30% by weight of magnesium oxide (MgO), 15% by weight of calcium oxide (CaO), 35% by weight of bentonite and 20% by weight of calcium carbonate (CaCO 3 ), 0.1 kg of a polyacrylamide-based anionic polymer flocculant And 0.4 kg of a fire retardant for strengthening strength were mixed to prepare a modified stabilizing agent for a high functional soot.
<실시예 2>≪ Example 2 >
산화마그네슘(MgO) 30중량%와 산화칼슘(CaO) 15중량%와 벤토나이트 35중량%와 탄산칼슘(CaCO3) 20중량%로 이루어진 수분조절재 0.9kg과, 폴리아크릴아미드계 음이온 고분자응집제 0.1kg과, 강도증진용 고화재 0.8kg을 혼합하여 고함수토용 개질안정처리제를 제조하였다. 0.9 kg of a moisture control material consisting of 30% by weight of magnesium oxide (MgO), 15% by weight of calcium oxide (CaO), 35% by weight of bentonite and 20% by weight of calcium carbonate (CaCO 3 ), 0.1 kg of a polyacrylamide- And 0.8 kg of fire retardant for reinforcing strength were mixed to prepare a modified stabilizing agent for a high functional soil.
<실시예 3>≪ Example 3 >
산화마그네슘(MgO) 30중량%와 산화칼슘(CaO) 15중량%와 벤토나이트 35중량%와 탄산칼슘(CaCO3) 20중량%로 이루어진 수분조절재 1.1kg과, 폴리아크릴아미드계 음이온 고분자응집제 0.1kg과, 강도증진용 고화재 1.0kg을 혼합하여 고함수토용 개질안정처리제를 제조하였다. 1.1 kg of a moisture control material composed of 30% by weight of magnesium oxide (MgO), 15% by weight of calcium oxide (CaO), 35% by weight of bentonite and 20% by weight of calcium carbonate (CaCO 3 ), 0.1 kg of a polyacrylamide- And 1.0 kg of fire retardant for reinforcing strength were mixed to prepare a stabilization treatment agent for a high functional soot.
<비교예 1>≪ Comparative Example 1 &
산화마그네슘(MgO) 30중량%와 산화칼슘(CaO) 15중량%와 벤토나이트 35중량%와 탄산칼슘(CaCO3) 20중량%로 이루어진 수분조절재 0.3kg과, 폴리아크릴아미드계 음이온 고분자응집제 0.1kg과, 강도증진용 고화재 0.8kg을 혼합하여 고함수토용 개질안정처리제를 제조하였다. 0.3 kg of a moisture control material consisting of 30% by weight of magnesium oxide (MgO), 15% by weight of calcium oxide (CaO), 35% by weight of bentonite and 20% by weight of calcium carbonate (CaCO 3 ), 0.1 kg of a polyacrylamide-based anionic polymer flocculant And 0.8 kg of fire retardant for reinforcing strength were mixed to prepare a modified stabilizing agent for a high functional soil.
<비교예 2>≪ Comparative Example 2 &
산화마그네슘(MgO) 30중량%와 산화칼슘(CaO) 15중량%와 벤토나이트 35중량%와 탄산칼슘(CaCO3) 20중량%로 이루어진 수분조절재 0.9kg과, 폴리아크릴아미드계 음이온 고분자응집제 0.1kg과, 강도증진용 고화재 0.2kg을 혼합하여 고함수토용 개질안정처리제를 제조하였다. 0.9 kg of a moisture control material consisting of 30% by weight of magnesium oxide (MgO), 15% by weight of calcium oxide (CaO), 35% by weight of bentonite and 20% by weight of calcium carbonate (CaCO 3 ), 0.1 kg of a polyacrylamide- And 0.2 kg of a fire retardant for strengthening strength were mixed to prepare a modified stabilizing agent for a high functional soil.
<비교예 3>≪ Comparative Example 3 &
산화마그네슘(MgO) 30중량%와 산화칼슘(CaO) 15중량%와 벤토나이트 35중량%와 탄산칼슘(CaCO3) 20중량%로 이루어진 수분조절재 0.9kg과, 폴리아크릴아미드계 음이온 고분자응집제 0.1kg과, 강도증진용 고화재 1.2kg을 혼합하여 고함수토용 개질안정처리제를 제조하였다. 0.9 kg of a moisture control material consisting of 30% by weight of magnesium oxide (MgO), 15% by weight of calcium oxide (CaO), 35% by weight of bentonite and 20% by weight of calcium carbonate (CaCO 3 ), 0.1 kg of a polyacrylamide- And 1.2 kg of fire retardant for reinforcing strength were mixed to prepare a modified stabilization treatment agent for the high functional soils.
<실험예><Experimental Example>
상기와 같이 제조된 실시예 1 ~ 4의 개질안정처리제와 비교예 1의 개질안정처리제를 각각 고함수토 10kg에 첨가 혼합하여 함수비와 슬럼프값의 변화량을 측정하였다. The modifying stabilizing agent of Examples 1 to 4 and the modifying stabilizing agent of Comparative Example 1 were added to 10 kg of high solids soil to measure the change of water content and slump value.
또한, 실험예에서 사용된 고함수토는 초기 함수비가 700%이고 투수계수(k)가 2.45×10-6cm/sec이며, 0.5mm 이상 체의 통과중량백분율은 100%이고 0.3mm 체의 통과중량백분율이 97%이며 0.1mm체의 통과중량백분율은 80%이고 0.08mm 체의 통과중량백분율이 68%이며 0.06mm 체의 통과중량백분율은 46%이고 0.04mm 체의 통과중량백분율이 28%이며 0.02mm 체의 통과중량백분율은 20%이고 0.01 mm 체의 통과중량백분율이 18%의 입도분포를 지닌 고함수토를 채취하여 사용하였다. Also, in the case of the high-function soil used in the experimental example, the initial water content was 700%, the water permeability coefficient (k) was 2.45 × 10 -6 cm / sec, the percentage of passing weight of 0.5 mm or more was 100% The percentage of the weight of the 0.1 mm sieve is 80%, the percentage of the passing weight of the 0.08 mm sieve is 68%, the percentage of the passing weight of the 0.06 mm sieve is 46%, the percentage of the passing weight of the 0.04 mm sieve is 28% The percentage of the passing weight of the 0.02 mm sieve was 20%, and the high solids soil having the particle size distribution of the percentage of the passing weight of the 0.01 mm sieve was 18%.
(1) 함수비의 측정(1) Measurement of water content
실시예 1 내지 3과 비교예1의 개질안정처리제를 고함수토에 각각 혼합한 다음 24시간 단위로 각각의 함수비(%)를 측정하였으며, 그 결과를 [표 1]과 도 1의 그래프에 나타내었다.The modified stabilization treatments of Examples 1 to 3 and Comparative Example 1 were mixed in a high-humidified soil, and the water content (%) was measured in units of 24 hours. The results are shown in Table 1 and the graph of FIG. .
(hour)
Elapsed time
(hour)
0
0
24
24
48
48
72
72
96
96
Example 1
Example 2
Example 3
Comparative Example 1
상기 [표 1]에서와 같이 실시예 1 ~ 3의 개질안정처리제가 첨가 혼합된 고함수토는 단시간내에 반출가능함수비인 80%에 도달하여 함수비의 빠른 저감효과를 나타내었으나, 수분조절재가 3중량부의 비율로 고함수토에 첨가 혼합된 비교예 1의 경우에는 함수비의 저감시 소요되는 시간이 실시예 1 ~ 3보다 현저하게 느려 반출가능함수비에 도달하기까지의 처리기간이 장기간 소요되는 문제점을 나타내었다. As shown in Table 1, the water-rich soil containing the modified stabilizing agents of Examples 1 to 3 reached 80% of the water-withdrawable water content within a short period of time and showed a rapid reduction effect of the water content. However, In the case of Comparative Example 1 in which the water content was mixed with the high boiling point ratio at a ratio of 1 to 3, the time required for reducing the water content ratio was significantly slower than that in Examples 1 to 3, .
(2) 슬럼프값의 측정 (2) Measurement of slump value
실시예 1 ~ 3과 비교예 1의 개질안정처리제가 첨가 혼합된 고함수토를 48시간 경과 후 슬럼프콘에 각각의 고함수토를 채우고 다침처리한 다음 뒤집어 공시체가 흘러내린 수치를 슬럼프값으로 측정하되 각각 5회 반복측정하여 평균값을 아래 [표 2]에 나타내었으며, 또한 개질안정처리제가 첨가되지 않은 고함수토를 자연건조시켜 함수비가 200%에 도달된 상태에서 슬럼프값을 측정하여 이를 기준값으로 하여 실시예 1 ~ 3 및 비교예 1과 대비하였다. After 48 hours from the addition of the modified softener of Examples 1 to 3 and Comparative Example 1, the slurry cone was filled with each of the high-solids soils, and then the slurry level of the inverted specimen was measured The results are shown in Table 2 below. The average value is shown in Table 2 below, and the high-moisture soil without the modified stabilizing agent is naturally dried to measure the slump value at a water content of 200% And compared with Examples 1 to 3 and Comparative Example 1.
Slump value (mm)
Example 1
Example 2
Example 3
Comparative Example 1
High functional soil without modified stabilizer
상기 [표 2]에서와 같이 실시예 3은 가장 낮은 함수비를 지니고 있어 유동성이 없는 것으로 측정되었으며, 실시예 1은 기준값(개질안정처리제 미첨가 고함수토)보다 30배 정도 향상된 슬럼프값을 나타내었고, 실시예 2는 기준값보다 80배정도 향상된 슬럼프값을 나타내었으나, 비교예 1은 기준값보다 5배 정도 향상된 슬럼프값을 나타내어 슬럼프값의 변화가 가장 적은 수치를 나타냄을 알 수 있으나 수분조절재의 첨가량이 본 발명의 범위에서 벗어나는 경우 수분흡수량이 크게 저하되면서 함수비와 슬럼프값의 변화가 적어 단시간내에 신속한 개질처리가 이루어지지 않는 것을 알 수 있다.As shown in Table 2, Example 3 had the lowest water content and was determined to have no fluidity. In Example 1, the slump value was improved by about 30 times as compared with the reference value (high functional soil without modified stabilizer) , Example 2 showed a slump value that was 80 times higher than the reference value. In Comparative Example 1, the slump value was improved by about 5 times as much as the reference value, indicating that the change in the slump value was the smallest. However, It can be understood that the water absorption amount is largely lowered and the change of the water content and the slump value is small and rapid reforming processing is not performed in a short time.
(3) 단위압축강도의 변화량 측정(3) Measurement of change in unit compressive strength
실시예 1 ~ 3과 비교예 2, 3의 개질안정처리제를 각각 고함수토에 첨가 혼합하고 7일경과 후 재령 7일 단위압축강도를 측정하여 [표 3] 및 도 2의 그래프에 나타내었다. The modifying stabilizers of Examples 1 to 3 and Comparative Examples 2 and 3 were added to the high funnel so that the unit compressive strengths were measured for 7 days after and 7 days after, and the results are shown in the graphs of Table 3 and FIG.
Unit Compressive Strength (kgf / ㎠)
Example 1
Example 2
Example 3
Comparative Example 2
Comparative Example 3
상기 [표 3]에서와 같이 실시예 1은 강도증진용 고화재가 4중량부의 비율로 첨가 혼합된 것으로 단위압축강도가 5kgf/㎠ 이상으로 성토재 및 복토재의 용도로 사용가능하며, 실시예 2 및 3은 강도증진용 고화재가 8중량부와 10중량부의 비율로 첨가 혼합된 것으로 단위압축강도가 8kgf/㎠ 이상으로 매립재 및 되매움재의 용도로 사용가능하나, 비교예 2는 강도증진용 고화재가 2중량부의 비율로 첨가 혼합된 것으로 단위압축강도가 4kgf/㎠ 미만으로 강도가 너무 낮아 성토재 등의 용도로 사용하기에 부적합하며, 비교예 3은 강도증진용 고화재가 12중량부의 비율로 첨가 혼합된 것으로 단위압축강도가 8kgf/㎠ 이상으로 매립재 및 되매움재의 용도로 사용가능하지만 실시예 3의 결과보다 0.3kgf/㎠ 정도의 매우 미약한 강도증가율을 나타내어 고화재 첨가량 대비 강도증진효율이 매우 낮은 것을 알 수 있다. As shown in Table 3, Example 1 was prepared by adding and mixing 4 parts by weight of a fire retardant for reinforcing strength, and the unit compression strength was 5 kgf / cm 2 or more. 3 is a mixture of 8 parts by weight and 10 parts by weight of a fire retardant for reinforcing strength, which can be used as a filler and an effervescent material with a unit compressive strength of 8 kgf / cm 2 or more. In Comparative Example 2, The fire resistance is less than 4 kgf / cm 2 and the strength is too low to be used for use in embankment and the like. In Comparative Example 3, the reinforcing fire strength is increased to 12 parts by weight It can be used for the filling material and the reemaking material with a unit compressive strength of 8kgf / ㎠ or more. However, it shows a very weak strength increase rate of about 0.3kgf / ㎠ as compared with the result of Example 3, It can be seen that the promoting efficiency is very low.
(4) 입도변화량 측정(4) Measurement of particle size variation
실시예 2의 개질안정처리제를 고함수토에 첨가 혼합하여 7일 경과한 후 입도분포를 측정하였으며, 고함수토의 개질처리 전과 후의 결과값을 아래 [표 4]와 도 3의 그래프에 나타내었다.The modified stabilizing agent of Example 2 was added to and mixed with the hypertonic soil, and the particle size distribution was measured after 7 days. The results before and after the reforming treatment of the hypertonic soil are shown in the graphs of Table 4 and FIG. 3 below.
체의 입경(mm)
Size of sieve (mm)
통과중량백분율(%)
Before reforming treatment
Percent of Pass Weight (%)
통과중량백분율(%)
After the reforming process
Percent of Pass Weight (%)
10
2
One
0.5
0.3
0.1
0.08
0.06
0.04
0.02
0.01
상기 [표 4]에서와 같이 실시예 2는 본 발명의 개질안정처리제가 고함수토의 토립자를 단립화하여 전체적인 입도가 증가함을 알 수 있다.As shown in Table 4, in Example 2, it can be seen that the particle size of the modified stabilized treating agent of the present invention is increased by making the soil particles of the high moisture soil solid.
(5) 투수계수의 측정 (5) Measurement of permeability coefficient
실시예 2의 개질안정처리제를 고함수토에 첨가 혼합하여 7일 경과한 후 투수계수(k)를 측정한 결과 투수계수(k)값은 8.7×10-3cm/sec로 개질처리 전의 고함수토의 투수계수(k)값 2.45×10-6cm/sec 보다 현저하게 투수성이 향상되었음을 알 수 있다.The permeability coefficient (k) was measured after 7 days from the addition of the modified stabilizing agent of Example 2 to the hypertonic soil and the permeability coefficient (k) was 8.7 × 10 -3 cm / sec. It can be seen that the permeability is remarkably improved than that of the sand permeability coefficient (k) of 2.45 × 10 -6 cm / sec.
상기 실험결과들에서와 같이 본 발명에 따른 실시예 1 ~ 3의 개질안정처리제를 고함수토에 일정비율로 첨가 혼합시 고함수토에 응결력과 응집력을 부여하여 토양입자를 단립화(單粒化)시킴에 따라 함수비를 단시간내에 신속하게 감소시키고 슬럼프값을 낮추어 유동성을 최소화하면서 단위압축강도 및 토립자의 입도를 증대시켜 습지조성용 성토재, 항만부지의 매립이나 저습지 식생지반 매립재, 연약지반 개량이나 쓰레기 매립장 등의 복토재, 각종 구조물의 되메움재 등으로 사용하기 적합한 개질안정토를 제공하게 된다.As shown in the above experimental results, when the modified stabilizing agents of Examples 1 to 3 according to the present invention were added to and mixed with the high-hydrotreated soil at a constant ratio, the flocculating force and the cohesive force were imparted to the soil with high hardness, ), The water content is rapidly reduced in a short time and the slump value is lowered to minimize the fluidity, and the unit compressive strength and the particle size of the soil particles are increased, so that the embankment material for wetland composition, landfill of harbor site, landfill material of lowland vegetation, Stabilized soil suitable for use as a soil filler such as a landfill, backfill of various structures, and the like.
Claims (5)
(EN) Disclosed is a modified stabilization treatment agent for a high solids soil which is produced by mixing a water control agent, a polymer flocculant and a fire retardant. The modified stabilization treatment agent comprises 25 to 35% by weight of magnesium oxide, 10 to 20% by weight of calcium oxide And 20 to 30% by weight of silicon dioxide (SiO 2 ), and 10 to 30% by weight of a water-regulating material composed of calcium carbonate (CaCO 3 ) and 15 to 30% and aluminum oxide (Al 2 O 3) 10 ~ 15 % by weight of ferric oxide (Fe 2 O 3) 1.5 ~ 3 % by weight of calcium (CaO) 35 ~ 45% by weight of sulfuric acid, calcium oxide (CaSO 4) 5 ~ 15 wt. , 4 to 10 parts by weight of a fire retardant for reinforcing the strength composed of 3 to 5% by weight of magnesium oxide (MgO) and 2 to 4% by weight of sulfur trioxide (SO 3 ).
A process for producing a modified stabilization treatment agent for a high function soot, which comprises mixing a moisture control agent, a polymer flocculant and a high-boiling water, comprising the steps of: 25 to 35% by weight of magnesium oxide (MgO), 10 to 20% by weight of calcium oxide to 40% by weight of calcium carbonate (CaCO 3) 15 ~ and the moisture control material 7-12 parts by weight, consisting of 30% by weight, and cationic or anionic polymeric flocculant from 0.1 to 5 parts by weight of silicon dioxide (SiO 2) 20 ~ 30% by weight of aluminum (Al 2 O 3) oxide 10 to 15% by weight of ferric oxide (Fe 2 O 3) 1.5 ~ 3 % by weight of calcium (CaO) 35 ~ 45% by weight of sulfuric acid, calcium oxide (CaSO 4) 5 And 4 to 10 parts by weight of a fire retardant for reinforcing the strength consisting of 3 to 5% by weight of magnesium oxide (MgO) and 2 to 4% by weight of sulfur trioxide (SO 3 ) A method for producing a stabilizing agent.
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| CN111518566A (en) * | 2020-04-21 | 2020-08-11 | 太原理工大学 | Composite modifier for preparing saline soil backfill |
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| KR20080083809A (en) * | 2007-03-13 | 2008-09-19 | 주식회사 한국항만기술단 | High water content dredging mud solidification stabilizer and it's improved soil production method |
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