KR20130013852A - Expending admixture composite for cement mortar - Google Patents

Expending admixture composite for cement mortar Download PDF

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KR20130013852A
KR20130013852A KR1020110075729A KR20110075729A KR20130013852A KR 20130013852 A KR20130013852 A KR 20130013852A KR 1020110075729 A KR1020110075729 A KR 1020110075729A KR 20110075729 A KR20110075729 A KR 20110075729A KR 20130013852 A KR20130013852 A KR 20130013852A
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ash
weight
product
cement mortar
material composition
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KR1020110075729A
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Korean (ko)
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KR101269450B1 (en
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정민철
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주식회사 웸
정민철
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    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/008—Cement and like inorganic materials added as expanding or shrinkage compensating ingredients in mortar or concrete compositions, the expansion being the result of a recrystallisation
    • 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
    • C04B28/02—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 containing hydraulic cements other than calcium sulfates
    • 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
    • C04B2111/00017—Aspects relating to the protection of the environment
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE: An expanding material composition for cement mortar is provided to be environmental friendly and to recycle resource by using fuel ash of paper mill by-products, by-product ash of desulfurization process, and by-product ash of cogeneration system. CONSTITUTION: An expanding material composition for cement mortar comprises 20-50 weight% of an anhydrous gypsum, 30-60 weight% of a paper mill by-products ash, 5-40 weight% of a by-product ash of a desulfurization process, 5-40 weight% of a by-product ash of a cogeneration system, and 1-20 weight% of a calcium sulfur aluminate system mineral. The paper mill by-products ash, by-product ash of a desulfurization process, and by-product ash of a cogeneration system have a particle size of 100-325 mesh and 50% or more CaO content. 10-50% of the paper mill b-product ash is replaced by light-burning dolomite powder; and the range of the particle diameter of the light-burning dolomite powder is 100-325 mesh.

Description

시멘트 몰탈용 팽창재 조성물 {Expending Admixture Composite for Cement Mortar}Expanding composition for cement mortar {Expending Admixture Composite for Cement Mortar}

본 발명은 시멘트 몰탈용 팽창재 조성물에 관한 것으로, 보다 상세하게는 제지부산물 연소재를 사용하므로 친환경적이며 자원 재활용이 가능한 시멘트 몰탈용 팽창재 조성물에 관한 것이다.The present invention relates to an expansion material composition for cement mortar, and more particularly, to an expansion material composition for cement mortar that is environmentally friendly and resource-recyclable since it uses a papermaking by-product combustion material.

일반적으로 아파트나 다세대주택 등의 공동주택을 건축하는 과정에서 시멘트 콘크리트로 이루어지는 바닥 슬라브 위에 단열층을 시공한 다음, 온수배관 및 마감몰탈을 시공하고 있다.Generally, in the process of building apartments such as apartments and multi-family houses, insulation layers are constructed on a floor slab made of cement concrete, and hot water piping and finishing mortar are being constructed.

종래 마감몰탈의 경우 대한민국 공개특허 제10-2009-0018441호, 등록특허 제10-0340291호 및 제10-0191354호 등에 공개되어 있는 바와 같이, 주로 칼슐설퍼알루미네이트계 팽창재를 사용하고 있으며, 생석회와 무수석고 등의 성분을 함유하는 팽창재 조성물을 사용하고 있다.Conventional finishing mortar, as disclosed in the Republic of Korea Patent Publication No. 10-2009-0018441, Patent Nos. 10-0340291 and 10-0191354, etc., mainly uses a sulfulfurethane-based expansion material, lime and An expansion material composition containing components such as anhydrous gypsum is used.

팽창재 조성물은 시멘트 몰탈의 길이변화율 등의 물리적인 특성을 개선하고 압축강도의 저하 및 균열을 방지하기 위하여 사용한다.The expander composition is used to improve the physical properties such as the rate of change of the length of the cement mortar, and to prevent degradation of the compressive strength and cracking.

그런데 생석회의 경우 지하자원으로 매장량에 한계가 있으며, 장기적인 관점에서 이를 대체할 자원을 찾는 것이 바람직하다.However, in the case of quicklime, reserves are limited by underground resources, and it is desirable to find resources to replace them in the long-term perspective.

본 발명의 발명자는 오랜 기간에 걸쳐 종래 팽창재 조성물에 사용하는 생석회를 대체하여 사용할 수 있는 재료를 발견하기 위하여 다양한 재료를 생석회 대신에 사용하여 팽창재 조성물을 제조한 다음, 이를 첨가한 시멘트 몰탈의 물리적인 특성을 측정하여 그 유용성 여부를 연구 조사하였다.In order to find a material that can be used to replace the quicklime used in the conventional inflator composition for a long time, the inventor of the present invention manufactures the inflator composition by using various materials instead of the quicklime, and then adds physical The properties were measured and investigated for their usefulness.

본 발명은 제지공정에서 발생하는 부산물을 태운 제지부산물 연소재와, 탈황공정 중에서 발생되는 부산물인 애시(ash), 열병합발전 과정에서 발생되는 부산물인 애시(ash)를 생석회 대신에 사용하여 제조한 시멘트 몰탈용 팽창재 조성물을 제공하는데, 그 목적이 있다.The present invention is a cement produced by using the by-product burning material by burning the by-product generated in the paper manufacturing process, ash (by) by-product generated during the desulfurization process, ash (ash) by-product generated during the cogeneration process in place of quicklime It is an object to provide an expandable composition for mortar.

본 발명의 실시예에 따른 시멘트 몰탈용 팽창재 조성물은 무수석고 20～50중량%, 제지부산물 연소재 30～60중량%, 탈황공정에서 발생하는 부산물인 애시(ash) 5~40중량%, 열병합발전 과정에서 발생하는 부산물인 애시(ash) 5~40중량%, 칼슘설퍼알루미네이트계 광물 1～20중량%를 포함하여 이루어진다.The expansion material composition for cement mortar according to an embodiment of the present invention is 20 to 50% by weight of anhydrous gypsum, 30 to 60% by weight of paper by-product combustion material, 5 to 40% by weight of ash (ash) generated by the desulfurization process, cogeneration By-products (ash) 5 to 40% by weight of the by-products produced in the process, it comprises 1 to 20% by weight of calcium sulfur aluminate-based minerals.

상기에서 무수석고는 입도범위가 150～200메쉬이고, SO3를 48% 이상 함유하는 재료를 사용한다.In the above, anhydrous gypsum has a particle size range of 150 to 200 mesh, and a material containing 48% or more of SO 3 is used.

상기 제지부산물 연소재, 탈황공정에서 발생되는 부산물인 애시(ash), 열병합발전 과정에서 발생되는 부산물인 애시(ash)의 입도범위는 100～325메쉬이고, CaO를 50% 이상 함유하는 재료를 사용한다.The particle size range of the paper by-product combustion material, ash by-product generated in the desulfurization process, and ash by-product generated in the cogeneration process is 100 to 325 mesh, and a material containing 50% or more of CaO is used. do.

상기 제지부산물 연소재는 종이를 제조하는 제지공정에서 발생하는 펄프 등의 폐기물인 제지부산물을 소각하여 얻어지는 연소재이다.The papermaking byproduct combustion material is a combustion material obtained by incineration of the papermaking byproduct which is waste such as pulp generated in the papermaking process for manufacturing paper.

상기 칼슘설퍼알루미네이트계 광물은 입도범위가 150～200메쉬이고, CaO 65～75%, Al2O3 6.5～7.5%, SO3 18.0～19.0%인 재료를 사용한다.The calcium sulfur aluminate-based mineral has a particle size of 150 ~ 200 mesh, CaO 65 ~ 75%, Al 2 O 3 6.5 ~ 7.5%, SO 3 18.0 ~ 19.0% is used for the material.

그리고 본 발명의 실시예에 따른 시멘트 몰탈용 팽창재 조성물은 상기 제지부산물 연소재의 10~50%를 경소 백운석 분말로 대체하여 첨가하는 것도 가능하다.In addition, the expansion material composition for cement mortar according to an embodiment of the present invention may be added by replacing 10-50% of the papermaking by-product combustor with light dolomite powder.

상기 경소 백운석분말은 입도범위가 100～325메쉬인 재료를 사용한다.The small dolomite powder uses a material having a particle size ranging from 100 to 325 mesh.

본 발명에 따른 시멘트 몰탈용 팽창재 조성물에 의하면, 제지부산물 연소재와 탈황공정에서 발생되는 부산물인 애시, 열병합발전 과정에서 발생되는 부산물인 애시를 사용하므로, 자원의 재활용이 가능하고, 환경친화적인 제품의 제조가 가능하다.According to the expansion material composition for cement mortar according to the present invention, it is possible to recycle resources and environmentally friendly products by using paper ash by-products and ash, a by-product generated in the desulfurization process, and ash, a by-product generated during the cogeneration process. It is possible to manufacture.

다음으로 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 바람직한 실시예를 설명하지만, 이는 예시적인 것으로 본 발명의 범위를 한정하는 것은 아니다.Next, a preferred embodiment of the cement mortar expandable composition according to the present invention will be described, but this is illustrative and does not limit the scope of the present invention.

[실시예 1]Example 1

무수석고 45중량%, 제지부산물 연소재 20중량%, 탈황공정에서 발생되는 부산물인 애시 15중량%, 열병합발전 과정에서 발생되는 부산물인 애시 10중량%, 칼슘설퍼알루미네이트계 광물 10중량%를 혼합하여 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 실시예 1을 제조하였다.Anhydrous gypsum 45% by weight, paper by-product combustor 20% by weight, by-product ash by desulfurization process 15% by weight, by-product ash by cogeneration process 10% by weight, calcium sulfuric aluminate mineral 10% by weight Example 1 of the expansion material composition for cement mortar according to the present invention was prepared.

[실시예 2][Example 2]

무수석고 30중량%, 제지부산물 연소재 30중량%, 탈황공정에서 발생되는 부산물인 애시 20중량%, 열병합발전 과정에서 발생되는 부산물인 애시 10중량%, 칼슘설퍼알루미네이트계 광물 10중량%를 혼합하여 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 실시예 2를 제조하였다.30% by weight of anhydrous gypsum, 30% by weight of paper by-product by-product, 20% by weight of ash as a by-product from desulfurization process, 10% by weight of ash as a by-product from cogeneration process, and 10% by weight of calcium sulfur aluminate mineral Example 2 of the expansion material composition for cement mortar according to the present invention was prepared.

[실시예 3][Example 3]

무수석고 20중량%, 제지부산물 연소재 35중량%, 탈황공정에서 발생되는 부산물인 애시 25중량%, 열병합발전 과정에서 발생되는 부산물인 애시 10중량%, 칼슘설퍼알루미네이트계 광물 10중량%를 혼합하여 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 실시예 3을 제조하였다.20% by weight of anhydrous gypsum, 35% by weight of paper by-product by-products, 25% by weight of ash as a by-product from desulfurization, 10% by weight of ash as a by-product of cogeneration, and 10% by weight of calcium sulfur aluminate mineral Example 3 of the expansion material composition for cement mortar according to the present invention was prepared.

[실시예 4]Example 4

무수석고 50중량%, 제지부산물 연소재 15중량%, 탈황공정에서 발생되는 부산물인 애시 15중량%, 열병합발전 과정에서 발생되는 부산물인 애시 10중량%, 칼슘설퍼알루미네이트계 광물 10중량%를 혼합하여 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 실시예 4를 제조하였다.50% by weight of dry gypsum, 15% by weight of paper by-product by-products, 15% by weight of ash by-product from desulfurization process, 10% by weight of ash by-product from cogeneration process, 10% by weight of calcium sulfur aluminate mineral Example 4 of the expansion material composition for cement mortar according to the present invention was prepared.

[실시예 5][Example 5]

무수석고 45중량%, 제지부산물 연소재 15중량%, 탈황공정에서 발생되는 부산물인 애시 5중량%, 열병합발전 과정에서 발생되는 부산물인 애시 5중량%, 칼슘설퍼알루미네이트계 광물 10중량%, 경소 백운석분말 20중량%를 혼합하여 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 실시예 5를 제조하였다.Anhydrous gypsum 45% by weight, paper by-product combustor 15% by weight, by-product ash by desulfurization process 5% by weight, by-product ash by cogeneration process by 5% by weight, calcium sulfur aluminate mineral 10% by weight, small Dolomite powder was mixed 20% to prepare Example 5 of the expansion material composition for cement mortar according to the present invention.

[실시예 6][Example 6]

무수석고 45중량%, 제지부산물 연소재 20중량%, 탈황공정에서 발생되는 부산물인 애시 10중량%, 열병합발전 과정에서 발생되는 부산물인 애시 5중량%, 칼슘설퍼알루미네이트계 광물 10중량%, 경소 백운석분말 10중량%를 혼합하여 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 실시예 6을 제조하였다.Anhydrous gypsum 45% by weight, paper by-product combustion material 20% by weight, by-product ash from desulfurization process 10% by weight, by-product ash by cogeneration process 5% by weight, calcium sulfur aluminate mineral 10% by weight, light Dolomite powder 10% by weight was mixed to prepare Example 6 of the expansion material composition for cement mortar according to the present invention.

[비교예][Comparative Example]

무수석고 45중량%, 생석회 45중량%, 칼슘설퍼알루미네이트계 광물 10중량%를 혼합하여 비교예를 제조하였다.Comparative example was prepared by mixing 45% by weight of anhydrous gypsum, 45% by weight of quicklime, and 10% by weight of calcium sulfur aluminate mineral.

상기와 같이 제조한 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 실시예 1 내지 6 및 비교예를 시멘트량 100중량부를 기준으로 12.5중량부를 시멘트 몰탈에 추가로 첨가하여 한국공업규격 KS F 2562의 시험방법에 따라 길이변화율을 측정한 다음, 다음의 표 1에 그 결과를 나타낸다.Test method of the Korean Industrial Standard KS F 2562 by adding 12.5 parts by weight to cement mortar based on the amount of cement of Examples 1 to 6 and Comparative Examples of the expansion material composition for cement mortar according to the present invention prepared as described above After measuring the rate of change in length, the results are shown in Table 1 below.

구분division 1일1 day 3일3 days 7일7 days 14일14 days 21일21st 28일28 days 45일45 days 56일56 days 3개월3 months 실시예1Example 1 +0.5452+0.5452 +0.2301+0.2301 -0.0512-0.0512 -0.0588-0.0588 -0.0687-0.0687 -0.0730-0.0730 -0.0789-0.0789 -0.0837-0.0837 -0.0845-0.0845 실시예2Example 2 +0.5479+0.5479 +0.2345+0.2345 -0.0515-0.0515 -0.0591-0.0591 -0.0690-0.0690 -0.0732-0.0732 -0.0792-0.0792 -0.0841-0.0841 -0.0849-0.0849 실시예3Example 3 +0.5401+0.5401 +0.2450+0.2450 -0.0401-0.0401 -0.0422-0.0422 -0.0436-0.0436 -0.0450-0.0450 -0.0461-0.0461 -0.0468-0.0468 -0.0475-0.0475 실시예4Example 4 +0.5439+0.5439 +0.2291+0.2291 -0.0517-0.0517 -0.0590-0.0590 -0.0623-0.0623 -0.0641-0.0641 -0.0728-0.0728 -0.0755-0.0755 -0.0805-0.0805 실시예5Example 5 +0.5431+0.5431 +0.2285+0.2285 -0.0520-0.0520 -0.0592-0.0592 -0.0618-0.0618 -0.0636-0.0636 -0.0722-0.0722 -0.0745-0.0745 -0.0824-0.0824 실시예6Example 6 +0.5422+0.5422 +0.2273+0.2273 -0.0520-0.0520 -0.0595-0.0595 -0.0606-0.0606 -0.0631-0.0631 -0.0715-0.0715 -0.0736-0.0736 -0.0852-0.0852 비교예Comparative example +0.5587+0.5587 +0.2375+0.2375 -0.0522-0.0522 -0.0598-0.0598 -0.0702-0.0702 -0.0735-0.0735 -0.0810-0.0810 -0.0851-0.0851 -0.0896-0.0896

상기한 표 1은 공시체 치수가 4×4×16 cm 몰드를 이용하여 길이변화율을 측정한 것으로, 양생방법을 항온항습실 양생(온도:19～21℃, 습도:55～65%)으로 실시한 데이터이다.Table 1 shows the specimen size measured using a 4 × 4 × 16 cm mold, and the data were obtained by curing the curing method in a constant temperature and humidity chamber (temperature: 19-21 ° C., humidity: 55-65%). .

상기한 표 1로부터 확인되는 바와 같이, 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 실시예에 있어서도, 생석회를 사용하는 것과 대비하여 시멘트 몰탈의 길이변화율이 장기적(2개월 이후)으로 거의 유사하게 안정성을 유지함을 알 수 있다.As can be seen from Table 1, in the embodiment of the expansion material composition for cement mortar according to the present invention, the rate of change of the length of cement mortar is almost similar to that of using quicklime in the long term (after 2 months). It can be seen that.

따라서 생석회를 대체하여 제지부산물 연소재, 탈황공정 중에서 발생하는 부산물인 애시, 열병합발전 과정에서 발생하는 부산물인 애시를 사용하거나, 제지부산물 연소재와 탈황공정 중에서 발생하는 부산물인 애시, 열병합발전 과정에서 발생하는 부산물인 애시에 경소 백운석을 혼합하여 사용하는 경우에도 요구되는 길이변화율을 충족시키는 시멘트 몰탈용 팽창재 조성물을 제공하는 것이 가능함을 확인할 수 있다.Therefore, it replaces quicklime by using paper ash by-product and ash by-product generated during desulfurization process and ash by-product generated by cogeneration process, or byproduct ash by co-product combustion and desulfurization process by cogeneration process. It can be seen that it is possible to provide an expansion material composition for cement mortar that satisfies the required length change rate even when a mixture of light and small dolomite ash is used as an byproduct.

상기에서는 본 발명에 따른 시멘트 몰탈용 팽창재 조성물의 바람직한 실시예에 대하여 설명하였지만, 본 발명은 이에 한정되는 것이 아니고 특허청구범위와 명세서의 범위 안에서 여러가지로 변형하여 실시하는 것이 가능하고, 이 또한 본 발명의 범위에 속한다.In the above, a preferred embodiment of the cement mortar expanding material composition according to the present invention has been described, but the present invention is not limited thereto, and various modifications can be made within the scope of the claims and the specification. Belongs to the range.

Claims (3)

무수석고 20～50중량%, 제지부산물 연소재 30～60중량%, 탈황공정에서 발생하는 부산물인 애시 5~40중량%, 열병합발전 과정에서 발생하는 부산물인 애시 5~40중량%, 칼슘설퍼알루미네이트계 광물 1～20중량%를 포함하는 시멘트 몰탈용 팽창재 조성물.Anhydrous gypsum 20-50% by weight, paper by-product by-product combustor 30-60% by weight, by-product ash from desulfurization process 5-40% by weight, by-product ash ash by 5-40% by weight, calcium sulfur aluminium An expansion material composition for cement mortar comprising 1 to 20% by weight of nate minerals. 청구항 1에 있어서,
상기 제지부산물 연소재, 탈황공정에서 발생되는 부산물인 애시, 열병합발전 과정에서 발생되는 부산물인 애시의 입도범위는 100～325메쉬이고, CaO를 50% 이상 함유하는 재료를 사용하는 시멘트 몰탈용 팽창재 조성물.The method according to claim 1,
The ash by-product combustor, ash as a by-product generated in the desulfurization process, ash by-product generated during the cogeneration process has a particle size range of 100 ~ 325 mesh, the expansion material for cement mortar using a material containing more than 50% CaO. . 청구항 1에 있어서,
상기 제지부산물 연소재의 10~50%를 경소 백운석 분말로 대체하여 첨가하고,
상기 경소 백운석분말은 입도범위가 100～325메쉬인 재료를 사용하는 시멘트 몰탈용 팽창재 조성물.The method according to claim 1,
10 to 50% of the papermaking by-product combustor is replaced with light dolomite powder, and
The small dolomite powder is an expansion material composition for cement mortar using a material having a particle size range of 100 to 325 mesh.
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CN103803828A (en) * 2013-12-25 2014-05-21 武汉武新新型建材有限公司 Modified desulfurization ash for cement and concrete and preparation method thereof
KR101456111B1 (en) * 2014-04-16 2014-11-04 (주)삼표산업 Eco-friendly Expansive Admixture comprising Industrical Waste ＆ Mortar composition for the floor using the same
KR101580801B1 (en) * 2015-08-11 2015-12-29 주식회사 건설자재산업 Cement composition having expansibility for floor finishing
CN113307589A (en) * 2021-06-08 2021-08-27 福建马坑矿业股份有限公司 High-performance filling cementing material and preparation method thereof
KR102297320B1 (en) * 2021-03-04 2021-09-03 주식회사 수인건설 Expansive Amixture and, concrete composition comprising thereof, repairing method of concrete structure using the same

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Publication number Priority date Publication date Assignee Title
CN103803828A (en) * 2013-12-25 2014-05-21 武汉武新新型建材有限公司 Modified desulfurization ash for cement and concrete and preparation method thereof
KR101456111B1 (en) * 2014-04-16 2014-11-04 (주)삼표산업 Eco-friendly Expansive Admixture comprising Industrical Waste ＆ Mortar composition for the floor using the same
KR101580801B1 (en) * 2015-08-11 2015-12-29 주식회사 건설자재산업 Cement composition having expansibility for floor finishing
KR102297320B1 (en) * 2021-03-04 2021-09-03 주식회사 수인건설 Expansive Amixture and, concrete composition comprising thereof, repairing method of concrete structure using the same
CN113307589A (en) * 2021-06-08 2021-08-27 福建马坑矿业股份有限公司 High-performance filling cementing material and preparation method thereof
CN113307589B (en) * 2021-06-08 2022-11-08 福建马坑矿业股份有限公司 High-performance filling cementing material and preparation method thereof

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