TWI759748B - Geological improvement agent excited by high basicity steel slag and blast furnace cement for geological improvement - Google Patents

Geological improvement agent excited by high basicity steel slag and blast furnace cement for geological improvement Download PDF

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TWI759748B
TWI759748B TW109117874A TW109117874A TWI759748B TW I759748 B TWI759748 B TW I759748B TW 109117874 A TW109117874 A TW 109117874A TW 109117874 A TW109117874 A TW 109117874A TW I759748 B TWI759748 B TW I759748B
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steel slag
blast furnace
cement
ground
geological improvement
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TW202144590A (en
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賴昭賢
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永覲工業股份有限公司
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    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

一種以高鹼度鋼渣激發的地質改良劑及地質改良用的高爐水泥，以總重量為100wt%計，包含一重量百分比為80wt%~90wt%的地改劑料或水泥底料，以及一重量百分比為10wt%~20wt%的鋼渣粉。所述鋼渣粉係將一鋼渣研磨為粒徑10~30微米，並均勻分散地添加於該地改劑料或該水泥底料中。在該鋼渣粉磨細至一定的粒徑，並且有限度添加的情況下，能有效降低膨脹率並使膨脹得以均勻，而且得以激發該地改劑料或該水泥底料的成分，能藉此優化施用所製成之地質改良劑後的土壤性能，以及所製成之高爐水泥的強度。A kind of geological improvement agent excited with high basicity steel slag and blast furnace cement for geological improvement, with a total weight of 100wt%, comprising a ground modification agent material or cement base material of 80wt% to 90wt%, and a weight The percentage is 10wt%~20wt% of steel slag powder. The steel slag powder is a steel slag that is ground into a particle size of 10-30 microns, and is added to the ground modification material or the cement base material in a uniformly dispersed manner. When the steel slag powder is ground to a certain particle size and the addition is limited, the expansion rate can be effectively reduced and the expansion can be made uniform, and the composition of the ground modification material or the cement base material can be stimulated. Optimizing the soil properties after application of the resulting geo-modifier and the strength of the resulting blast furnace cement.

Description

以高鹼度鋼渣激發的地質改良劑及地質改良用的高爐水泥Geological improvement agent excited by high basicity steel slag and blast furnace cement for geological improvement

本發明是有關於一種改質的建築用材，特別是指一種以高鹼度鋼渣激發的地質改良劑及地質改良用的高爐水泥。The present invention relates to a modified building material, in particular to a geological improvement agent excited by high basicity steel slag and blast furnace cement for geological improvement.

目前常用的煉鋼製程中，有數種高鹼度(CaO含量大於45%)的鋼渣，例如高爐煉鋼後鐵水脫硫之脫硫渣、電爐煉鋼中還原製程中的還原渣。其中，所述脫硫渣與所述還原渣的共通特性係會通入過量的石灰石或石灰，因此渣內的氧化鈣含量將高於45%，因而具有強鹼性(高鹼度)而具激發特性。而所述脫硫渣與所述還原渣均為煉鋼時的副產物，部分屬於一般事業廢棄物，雖然其中含有石灰、金屬氧化物等等的成分，但目前缺乏將高鹼度的鋼渣所含之資源成分有效重新利用的系統化方法，大多只能當作一般廢棄物處理，因而造成資源的浪費。There are several types of steel slag with high basicity (CaO content greater than 45%) in the commonly used steelmaking process, such as the desulfurization slag of molten iron desulfurization after blast furnace steelmaking, and the reduction slag in the reduction process of electric furnace steelmaking. Among them, the common characteristic of the desulfurization slag and the reducing slag is that excessive limestone or lime will be introduced, so the calcium oxide content in the slag will be higher than 45%, so it has strong alkalinity (high alkalinity) and has Exciting properties. The desulfurization slag and the reduction slag are by-products of steelmaking, and some of them are general business wastes. Although they contain lime, metal oxides, etc. Most of the systematic methods for the effective reuse of the contained resource components can only be treated as general waste, resulting in a waste of resources.

土壤、混凝土、水泥等等的建築用材，各自具有一定的彈性、抗壓度、硬度、膨脹率等等物理特性，但因應不同的需求，可能需要藉由添加改質劑的方式，針對土壤性質進行改質，或者在水泥中添加特定成分，藉此調整特定的物理特性而製成強化水泥，以因應多種不同的建築或地質改良需求。因此，本案發明人遂據此為主要考量，預期妥善利用高鹼度的鋼渣，達成所需的地質改良效果。Building materials such as soil, concrete, cement, etc., each have certain physical properties such as elasticity, compressive strength, hardness, expansion rate, etc., but according to different needs, it may be necessary to add modifiers for soil properties. Modification, or adding specific ingredients to cement, thereby adjusting specific physical properties to make reinforced cement to meet a variety of different architectural or geological improvement needs. Therefore, the inventor of the present case takes this as the main consideration, and expects to properly utilize the high basicity steel slag to achieve the required geological improvement effect.

因此，本發明之目的，即在提供一種妥善利用高鹼度鋼渣達成改質效果之以高鹼度鋼渣激發的地質改良劑及地質改良用的高爐水泥。Therefore, the purpose of the present invention is to provide a high-basicity steel slag-activated geological improvement agent and a blast furnace cement for geological improvement, which can properly utilize the high-basicity steel slag to achieve the modification effect.

於是，本發明以高鹼度鋼渣激發的地質改良劑，以重量百分比為100wt%計，包含一重量百分比為80wt%~90wt%的地改劑料，及一重量百分比為10wt%~20wt%的鋼渣粉。其中，該鋼渣粉係將一鋼渣研磨為粒徑10~30微米，並均勻分散地添加於該地改劑料中。Therefore, the present invention uses the high-basicity steel slag to stimulate the geological modifier, and the weight percentage is 100wt%. Slag powder. Wherein, the steel slag powder is a steel slag that is ground into a particle size of 10-30 microns, and is added to the soil modification material in a uniformly dispersed manner.

另外，本發明以高鹼度鋼渣激發的地質改良用的高爐水泥，以重量百分比為100wt%計，包含一重量百分比為80wt%~90wt%的水泥底料，及一重量百分比為20wt%~30wt%的鋼渣粉。其中，該鋼渣粉係將一鋼渣研磨為粒徑10~30微米，並均勻分散地添加於該水泥底料中。In addition, the blast furnace cement for geological improvement excited by high-basicity steel slag of the present invention comprises a cement base material with a weight percentage of 80wt% to 90wt%, and a weight percentage of 20wt% to 30wt%, based on a weight percentage of 100wt%. % of steel slag powder. Wherein, the steel slag powder is a steel slag that is ground into a particle size of 10-30 microns, and is added to the cement base material in a uniformly dispersed manner.

本發明之功效在於：因所施用的該鋼渣粉的粒徑為接近該地改劑料或該水泥底料的10~30微米，在均勻分散且有限度地添加的情況下，不會影響該地改劑料與該水泥底料的強度，且能在有效限制膨脹率而降低膨脹所造成之影響的同時，以相對較高的比表面積優化激發的反應效率，藉此激發該地改劑料或該水泥底料的成分，優化所製成之地質改良劑的性能，或強化所製成之高爐水泥的抗壓強度。The effect of the present invention is: because the particle size of the applied steel slag powder is 10-30 microns close to that of the soil modification material or the cement base material, under the condition of uniform dispersion and limited addition, it will not affect the The strength of the soil modification material and the cement base material can effectively limit the expansion ratio and reduce the influence caused by expansion, and at the same time optimize the excited reaction efficiency with a relatively high specific surface area, thereby stimulating the soil modification material. Or the composition of the cement base material, optimize the performance of the produced geological modifier, or strengthen the compressive strength of the produced blast furnace cement.

在本發明被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。Before the present invention is described in detail, it should be noted that in the following description, similar elements are designated by the same reference numerals.

本發明以高鹼度鋼渣激發的地質改良劑之一實施例，以重量百分比為100wt%計，包含一重量百分比為80wt%~90wt%且以水淬爐石渣粉為主要材料的地改劑料，及一重量百分比為10wt%~20wt%且選自還原渣或脫硫渣的鋼渣粉。其中，該鋼渣粉係將還原渣或脫硫渣研磨為粒徑10~30微米，並均勻分散地添加於該地改劑料中。According to an embodiment of the present invention, the geological improvement agent excited by high basicity steel slag is 100 wt %, and includes a ground modification agent whose weight percentage is 80 wt % to 90 wt % and uses water-quenched furnace slag powder as the main material material, and a steel slag powder whose weight percentage is 10wt% to 20wt% and is selected from reduction slag or desulfurization slag. Wherein, the steel slag powder is ground reduction slag or desulfurization slag to a particle size of 10-30 microns, and is added to the soil modification material in a uniformly dispersed manner.

由於該鋼渣粉的粒徑與水淬爐石渣粉的粒徑接近，在該鋼渣粉均勻分散且「有限度添加」於該地改劑料中時，以該地改劑料作為「膠結材料」的情況下，不會影響膠結的強度，同時藉由該鋼渣粉之粒徑的縮小，有效降低膨脹化學能，故能藉此降低膨脹的影響性。另外，由於該鋼渣粉含有游離石灰，以及游離氧化鎂，並具有高鹼度，能在因粒徑小而具有較大接觸面積的情況下，增加反應效率以及完整性，藉此使以水淬爐石渣粉為主要材料的該地改劑料發揮活性以及強度。Since the particle size of the steel slag powder is close to the particle size of the water quenching furnace slag powder, when the steel slag powder is uniformly dispersed and "limited addition" to the local modifier material, the local modifier material is used as the "cementing material". ”, it will not affect the strength of the cementation, and at the same time, through the reduction of the particle size of the steel slag powder, the chemical energy of expansion is effectively reduced, so the influence of expansion can be reduced. In addition, because the steel slag powder contains free lime and free magnesium oxide, and has high basicity, it can increase the reaction efficiency and integrity under the condition that the particle size is small and has a large contact area, thereby making water quenching possible. The local modification material with the main material of furnace slag powder exerts activity and strength.

實際使用該實施例時，可應用於例如粉土質砂層攪拌樁、沈泥質黏土層攪拌樁、沈泥質黏土層混土排樁(SMPW)工法、高壓噴射樁、 粉土質黏土淺層地盤改良、隧道之回填灌漿工程、管溝回填之控制性低強度回填(CLSM)材料等等施工方法。在執行淺層的地質改良時，一般是以土壤總重比例的3%為標準的添加量，即例如欲改質的土壤為2500公斤重，則添加75公斤的本實施例。When actually using this embodiment, it can be applied to, for example, silty sand mixing piles, silty clay mixing piles, silty clay mixing piles (SMPW) construction method, high-pressure jetting piles, and silty clay shallow site improvement. , Tunnel backfill grouting project, Controlled Low Strength Backfill (CLSM) material for pipe trench backfill and other construction methods. When performing shallow geological improvement, the standard addition amount is generally 3% of the total soil weight ratio, that is, for example, if the soil to be improved is 2500 kg, then 75 kg is added in this embodiment.

表一： 地質改劑劑應用 施工方法 土壤性質 設計強度 kg/cm2 沈泥質砂層攪拌樁 攪拌樁 沈泥質砂 20 沈泥質黏土層攪拌樁 攪拌樁 沈泥質黏土 20 沈泥質黏土層混土排樁工法 混土排樁 沈泥質黏土 10 沈泥質黏土層高壓噴射樁 高壓噴射樁 沈泥質黏土 10 Table I: Application of geological modifier Construction method soil properties Design strength kg/cm 2 Muddy sand mixing pile stirring pile argillaceous sand 20 Muddy clay mixing pile stirring pile Muddy clay 20 Construction Method of Concrete Pile Arrangement in Muddy Clay Layer Concrete pile Muddy clay 10 High pressure jetted piles in muddy clay layer High pressure jet pile Muddy clay 10

如上表一所呈現，可見實際將本實施例施用於多種施工方法配合不同的土壤性質，都可以達成預期的設計強度，以符合建築工法的強度規範。As shown in Table 1 above, it can be seen that the actual application of this embodiment to various construction methods and different soil properties can achieve the expected design strength, so as to meet the strength specification of the construction method.

另外，本發明以高鹼度鋼渣激發的地質改良用的高爐水泥之一實施例，以重量百分比為100wt%計，包含一重量百分比為80wt%~90wt%的水泥底料，及一重量百分比為10wt%~20wt%的鋼渣粉。其中，該鋼渣粉係將一鋼渣研磨為粒徑10~30微米，並均勻分散地添加於該水泥底料中。而該水泥底料為以高爐石粉為主要材料。In addition, one embodiment of the blast furnace cement for geological improvement excited by high-basicity steel slag of the present invention comprises a cement base material with a weight percentage of 80 wt % to 90 wt %, and a weight percentage of 100 wt %. 10wt%~20wt% of steel slag powder. Wherein, the steel slag powder is a steel slag that is ground into a particle size of 10-30 microns, and is added to the cement base material in a uniformly dispersed manner. The cement bottom material is mainly made of blast furnace stone powder.

在本實施例中，該水泥底料同樣作為「膠結材料」，故在該鋼渣粉已磨細至與高爐石粉接近之粒徑，並且有限度添加的情況下，同樣不會影響膠結的強度，並同時藉由該鋼渣粉之粒徑的縮小，有效降低膨脹化學能，故能藉此降低膨脹的影響性，也優化激發反應的效率以及反應的完整性。In this embodiment, the cement bottom material is also used as a "cement material", so that the steel slag powder has been ground to a particle size close to that of blast furnace stone powder, and under the circumstance of limited addition, it will also not affect the strength of cementation. At the same time, by reducing the particle size of the steel slag powder, the chemical energy of expansion can be effectively reduced, so the influence of expansion can be reduced, and the efficiency of the excitation reaction and the integrity of the reaction can also be optimized.

相較於激發地質改良劑而言，所製成之地質改良用的高爐水泥必須符合一定的規範，特別在抗壓能力以及熱壓膨脹率的參數上，若無法符合規範，則可能在安全上有所疑慮而無法販售使用。以本實施例之該鋼渣粉而言，若是將粒徑研磨為10微米，相較於1毫米而言即為100分之1，對於三維的立方維度而言，則僅會有100*100*100分之1的膨脹能量，對於控制熱壓膨脹率有相當顯著的效果。Compared with the activated geological improvement agent, the blast furnace cement used for geological improvement must meet certain specifications, especially in the parameters of compressive capacity and thermal expansion rate. Unable to sell and use due to doubts. For the steel slag powder of this embodiment, if the particle size is ground to 10 microns, it is 1/100 compared to 1 mm, and for the three-dimensional cubic dimension, there will only be 100*100* The expansion energy of 1/100 has a very significant effect on controlling the thermal expansion rate.

表二： 組別 抗壓3天 抗壓7天 抗壓28天 熱壓膨脹率 CNS15286高爐水泥規範 13Mpa 20Mpa 25Mpa 0.080% 1 高爐水泥(水泥底料) 15Mpa 23Mpa 36Mpa -0.007% 2 高爐水泥90%+10%還原碴粉 17Mpa 26Mpa 38Mpa 0.022% 3 高爐水泥80%+20%還原碴粉 18Mpa 23Mpa 32Mpa 0.021% 4 高爐水泥70%+30%還原碴粉 9Mpa 14Mpa 20Mpa 0.106% 5 高爐水泥60%+40%還原碴粉 7Mpa 9Mpa 17Mpa 0.2% 6 高爐水泥60%+40%原狀還原渣 (未磨細) 6Mpa 9Mpa 14Mpa 0.180% 備註：CNS13619水泥熱壓膨脹率為0.06% Table II: group 3 days of stress resistance 7 days of stress resistance 28 days of stress resistance Thermal expansion rate CNS15286 Specification for blast furnace cement 13Mpa 20Mpa 25Mpa 0.080% 1 Blast furnace cement (cement base material) 15Mpa 23Mpa 36Mpa -0.007% 2 Blast furnace cement 90%+10% reduced ballast powder 17Mpa 26Mpa 38Mpa 0.022% 3 Blast furnace cement 80%+20% reduced ballast powder 18Mpa 23Mpa 32Mpa 0.021% 4 Blast furnace cement 70%+30% reduced ballast powder 9Mpa 14Mpa 20Mpa 0.106% 5 Blast furnace cement 60%+40% reduced ballast powder 7Mpa 9Mpa 17Mpa 0.2% 6 Blast furnace cement 60%+40% original reduced slag (not ground) 6Mpa 9Mpa 14Mpa 0.180% Remarks: CNS13619 cement thermal expansion rate is 0.06%

由如上表二所呈現的抗壓強度數值，在該鋼渣粉是選自以還原渣研磨的情況下，可見添加10%~20%磨細後之該還原渣粉的第2、3組數據中，確實可符合CN15286所規範的抗壓強度，熱壓膨脹率也確實可低於規範，甚至也都能符合標準更嚴格的CNS13619的熱壓膨脹率規範。反觀未按照「有限度添加」而添加超過20%的第4、5組數據，以及未將還原渣磨細為該還原渣粉的第6組數據，不但在抗壓強度上低於規範，還會有過高的熱壓膨脹率，在熱壓膨脹率上同樣也無法符合規範。因此，可知只要先將還原渣磨細至一定粒徑以下，並且「有限度地添加」，確實可達成提高抗壓強度的強化效果，也能有效控制熱壓膨脹率，以確實符合既有的高爐水泥規範。From the compressive strength values presented in Table 2 above, in the case that the steel slag powder is selected from grinding with reduced slag, it can be seen that the 2nd and 3rd groups of data of the reduced slag powder after adding 10% to 20% of grinding , it can indeed meet the compressive strength specified by CN15286, and the thermal expansion rate can indeed be lower than the standard, and it can even meet the more stringent CNS13619 thermal expansion rate specification. On the other hand, the data of Group 4 and Group 5, which did not add more than 20% according to the "limited addition", and the Group 6 data of which the reduced slag was not ground into the reduced slag powder, were not only lower than the specification in terms of compressive strength, but also There will be an excessively high thermal expansion rate, and the thermal expansion rate will also fail to meet the specifications. Therefore, it can be seen that as long as the reduced slag is first ground to a certain particle size or less, and "limited addition", the strengthening effect of improving the compressive strength can indeed be achieved, and the thermal expansion rate can be effectively controlled to meet the existing requirements. Specification for blast furnace cement.

表三： 組別 抗壓3天 抗壓7天 抗壓28天 熱壓膨脹率 CNS15286高爐水泥規範 13Mpa 20Mpa 25Mpa 0.080% 1 高爐水泥(水泥底料) 15Mpa 24Mpa 38Mpa -0.009% 2 高爐水泥90%+10%脫硫碴粉 16Mpa 23Mpa 35Mpa 0.002% 3 高爐水泥80%+20%脫硫碴粉 14Mpa 20Mpa 29Mpa 0.023% Table 3: group 3 days of stress resistance 7 days of stress resistance 28 days of stress resistance Thermal expansion rate CNS15286 Specification for blast furnace cement 13Mpa 20Mpa 25Mpa 0.080% 1 Blast furnace cement (cement base material) 15Mpa 24Mpa 38Mpa -0.009% 2 Blast furnace cement 90%+10% desulfurization ballast powder 16Mpa 23Mpa 35Mpa 0.002% 3 Blast furnace cement 80%+20% desulfurization ballast powder 14Mpa 20Mpa 29Mpa 0.023%

由如上表三所呈現的抗壓強度數值，在該鋼渣粉是選自以脫硫渣研磨的情況下，可見在有限度地添加10%、20%之脫硫渣粉的第2、3組數據中，無論是抗壓強度與熱壓膨脹率都能符合CNS15286高爐水泥規範。From the compressive strength values presented in Table 3 above, in the case that the steel slag powder is selected from the desulfurization slag grinding, it can be seen that the 2nd and 3rd groups of desulfurization slag powder are limited to add 10% and 20%. In the data, both the compressive strength and the thermal expansion rate can meet the CNS15286 blast furnace cement specification.

綜上所述，本發明以高鹼度鋼渣激發的地質改良劑及地質改良用的高爐水泥，由於該鋼渣粉的粒徑為10~30微米，在均勻分散且有限度地添加的情況下，有效限制膨脹率而降低膨脹所造成的影響，並同時提高反應的接觸面積以激發該地改劑料或該水泥底料的成分，得以優化所製成之地質改良劑的性能，或使製成之高爐水泥符合使用規範。因此，確實能達成本發明之目的。To sum up, in the present invention, the geological improvement agent and blast furnace cement for geological improvement excited by high-basicity steel slag, because the particle size of the steel slag powder is 10-30 microns, under the condition of uniform dispersion and limited addition, Effectively limit the expansion ratio to reduce the influence caused by expansion, and at the same time increase the contact area of the reaction to stimulate the composition of the soil modification material or the cement bottom material, so as to optimize the performance of the prepared geological modification agent, or make the The blast furnace cement conforms to the usage specification. Therefore, the object of the present invention can be achieved indeed.

惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。However, the above are only examples of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the contents of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

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Claims (4)

一種以高鹼度鋼渣激發的地質改良劑，以總重量為100wt%計，包含：一地改劑料，重量百分比為80wt%~90wt%；及一鋼渣粉，係將一選自還原渣或脫硫渣的鋼渣研磨為粒徑10~30微米，並均勻分散地添加於該地改劑料中，且重量百分比為10wt%~20wt%，其中，該鋼渣粉含有游離石灰，以及游離氧化鎂。 A geological improvement agent excited by high-basicity steel slag, with a total weight of 100wt%, comprising: a ground-modifying agent material, with a weight percentage of 80wt% to 90wt%; and a steel slag powder, which is a The steel slag of the desulfurization slag is ground into a particle size of 10 to 30 microns, and is added to the ground modification material in a uniformly dispersed manner, and the weight percentage is 10 wt % to 20 wt %, wherein the steel slag powder contains free lime and free magnesium oxide. . 如請求項1所述以高鹼度鋼渣激發的地質改良劑，其中，該地改劑料是以水淬爐石渣粉為主要材料。 The geological improvement agent excited by high-basicity steel slag according to claim 1, wherein the main material of the soil improvement agent is water-quenched furnace slag powder. 一種以高鹼度鋼渣激發的地質改良用的高爐水泥，以總重量為100wt%計，包含：一水泥底料，重量百分比為80wt%~90wt%；及一鋼渣粉，係將一選自還原渣或脫硫渣的鋼渣研磨為粒徑10~30微米，並均勻分散地添加於該水泥底料中，且重量百分比為10wt%~20wt%，其中，該鋼渣粉含有游離石灰，以及游離氧化鎂。 A blast furnace cement for geological improvement excited by high-basicity steel slag, with a total weight of 100 wt %, comprising: a cement base material, with a weight percentage of 80 wt % to 90 wt %; The steel slag of the slag or desulfurized slag is ground into a particle size of 10-30 microns, and is added to the cement base material in a uniformly dispersed manner, and the weight percentage is 10wt%-20wt%, wherein the steel slag powder contains free lime, and free oxidized magnesium. 如請求項3所述以高鹼度鋼渣激發的地質改良用的高爐水泥，其中，該水泥底料是以高爐石粉為主要材料。 The blast furnace cement for geological improvement excited by high-basicity steel slag according to claim 3, wherein the cement bottom material is blast furnace stone powder as the main material.
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