WO2017122916A1 - 무시멘트 결합재 및 이의 응용 - Google Patents

무시멘트 결합재 및 이의 응용 Download PDF

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Publication number
WO2017122916A1
WO2017122916A1 PCT/KR2016/012775 KR2016012775W WO2017122916A1 WO 2017122916 A1 WO2017122916 A1 WO 2017122916A1 KR 2016012775 W KR2016012775 W KR 2016012775W WO 2017122916 A1 WO2017122916 A1 WO 2017122916A1
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Prior art keywords
weight
cement
binder
concrete
parts
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PCT/KR2016/012775
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English (en)
French (fr)
Korean (ko)
Inventor
오재은
전동호
Original Assignee
울산과학기술원
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Priority to RU2018129097A priority Critical patent/RU2705646C1/ru
Priority to CN201680078357.9A priority patent/CN108473373A/zh
Publication of WO2017122916A1 publication Critical patent/WO2017122916A1/ko

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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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • 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
    • C04B22/06—Oxides, Hydroxides
    • 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
    • C04B22/08—Acids or salts thereof
    • C04B22/12—Acids or salts thereof containing halogen in the anion
    • 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
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
    • 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
    • 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

Definitions

  • the present invention relates to cementless binders and applications thereof, and more particularly, to a technique for preparing cementless binder compositions comprising fly ashes and chemically active agents and applying them to mortars and concrete.
  • the present inventors have studied in view of the above problems, as a result, by combining a chemical active agent in a fly ash to a specific composition can be produced cementless binder material excellent in compressive strength, using it, low cost, high strength, light weight, heavy metal adsorption It has been found that it is possible to provide mortar and concrete with sound absorption performance.
  • Another object of the present invention is to provide a mortar and concrete having a low cost, high strength, light weight, heavy metal adsorption and sound absorption performance using the cement cement binder according to the present invention.
  • Still another object of the present invention is to provide a method for producing a cement binder paste using the cement binder according to the present invention.
  • a cementless binder comprising 60 to 87% by weight of fly ash, 10 to 35% by weight of calcium oxide (CaO) and 1 to 15% by weight of calcium chloride (CaCl 2 ).
  • a cement mortar comprising the cement cement binder.
  • a cementless concrete including the cementless binder is provided.
  • a cementless concrete product including the cementless concrete is provided.
  • the cement binder Since the cement binder is manufactured by recycling industrial by-products, it is environmentally friendly and has excellent compressive strength, dryness density, and heavy metal adsorption performance after curing. Accordingly, the mortar and concrete having low cost and high strength, light weight, heavy metal adsorption, and sound absorption performance can be provided using the cementless binder composition.
  • Example 1 is a graph showing the compressive strength (MPa) according to the curing period (days) of cement cement binder (9 kinds) prepared from Example 1.
  • Figure 2 is a graph showing the compressive strength (MPa) according to the curing period (days) of cement cement binder (6 kinds) prepared from Example 2 and Comparative Example 1.
  • Example 3 is a graph showing the results of measuring the dry density after curing the cement cement binder (6 kinds) prepared in Example 2 and Comparative Example 1 for 28 days.
  • FIG. 4 is a graph showing the results of measuring the adsorption function of heavy metal (chromium) of CF_0.7, CCF_0.4 and CCF_0.7 cured in the form of blocks according to Preparation Example 2, and powder of CCF_ powder.
  • a cementless binder comprising 60 to 87% by weight of fly ash, 10 to 35% by weight of calcium oxide (CaO) and 1 to 15% by weight of calcium chloride (CaCl 2 ).
  • the fly ash may be referred to as ash generated after burning coal (that is, coal fly ash).
  • the fly ash refers to coal ash collected by a dust collector from flue gas of a boiler combusting pulverized coal.
  • the fly ash is generated by incineration of paper ash sludge generated as a by-product from the paper mill, blast furnace slag obtained by collecting impurities from iron ore in the blast furnace, or incineration of general waste. It is a different material than waste.
  • the fly ash may include SiO 2, Al 2 O 3, Fe 2 O 3, CaO and MgO.
  • the fly ash may include SiO 2 , Al 2 O 3 , Fe 2 O 3 , CaO and MgO in a weight ratio of 28.5 to 66.0: 12.5 to 55.0: 1.1 to 25.5: 1.4 to 22.4: 0.1 to 4.8.
  • the fly ash may include SiO 2 , Al 2 O 3 , Fe 2 O 3 , CaO and MgO in a weight ratio of 48.8 to 66.0: 17.0 to 27.8: 1.1 to 13.9: 3.1 to 10.1: 0.3 to 2.0 have.
  • the fly ash may further include one or more components selected from the group consisting of Na 2 O, K 2 O, P 2 O 5 , TiO 2 , MnO, and SO 3 .
  • the fly ash may include the components described in Composition Examples 1 to 6 of Table 1 in parts by weight.
  • Composition example 1 Composition example 2
  • Composition example 3 Composition example 4
  • Composition example 5 Composition example 6 SiO 2 28.5 ⁇ 59.7 37.8-58.5 35.6 ⁇ 57.2 50.2 ⁇ 59.7 48.8-66.0 28.5-66.0 Al 2 O 3 12.5-35.6 19.1 ⁇ 28.6 18.8-55.0 14.0 ⁇ 32.4 17.0 ⁇ 27.8 12.5-55.0 Fe 2 O 3 2.6-21.2 6.8-25.5 2.3-19.3 2.7-14.4 1.1-13.9 1.1-25.5 CaO 0.5-28.9 1.4-22.4 1.1-7.0 0.6-2.6 2.9 to 5.3 1.4-22.4 MgO 0.6 to 3.8 0.7 ⁇ 4.8 0.7 ⁇ 4.8 0.1-2.1 0.3 ⁇ 2.0 0.1-4.8 Na 2 O 0.1-1.9 0.3 ⁇ 1.8 0.6 ⁇ 1.3 0.5 ⁇ 1.2 0.2-1.3 0.1-1.9 K 2 O 0.4-4 0.9-2.6 0.8 ⁇ 0.9 0.8 ⁇
  • the workability is improved when manufacturing the cement binder, the heat of hardening is alleviated, the long-term strength is improved, and the material separation between the binder and water is reduced even at a high water / binder ratio (W / B). It can happen and be economical.
  • the calcium oxide acts as a chemical activator for expressing strength, but fly ash and calcium oxide alone are difficult to express strength. Specifically, when calcium chloride is additionally included, calcium chloride acts as a chemical activator for accelerating the expression rate of strength. It was confirmed that the strength was significantly improved.
  • the strength of the C-S-H increases depending on the reaction of the components.
  • the calcium chloride may improve the adsorption capacity of heavy metals by reacting with other components in the curing process to generate hydrocalumite.
  • the fly ash is included 60 to 87% by weight relative to the weight of the cement binder.
  • the content of the fly ash is within the above range, workability in manufacturing is improved, heat of curing is alleviated, strength is improved, and material separation between binder and water may occur less even at a high water / binder ratio (W / B). .
  • the calcium oxide is included in 10 to 35% by weight based on the weight of the cement cement binder.
  • the calcium oxide is less than 10% by weight based on the weight of the cement binder, it is difficult to express the strength, and when it exceeds 35% by weight, it is impossible to form a paste mixed with fly ash, calcium oxide, calcium chloride and water.
  • the calcium chloride is contained in 1 to 15% by weight based on the weight of the cement cement binder. When the content of calcium chloride is out of the above range, the strength after curing significantly decreases.
  • the cementless binder may include 70 to 85% by weight of fly ash, 12 to 27% by weight of calcium oxide, and 3 to 10% by weight of calcium chloride, based on the weight thereof.
  • the cementless binder may include 70 to 78% by weight of fly ash, 16 to 24% by weight of calcium oxide, and 6 to 10% by weight of calcium chloride.
  • the cementless binder may include 72 to 76 wt% of fly ash, 18 to 22 wt% of calcium oxide, and 6 to 8 wt% of calcium chloride.
  • the cementless binder may be a mixture of 13 to 50 parts by weight of calcium oxide and 1 to 17 parts by weight of calcium chloride based on 100 parts by weight of the fly ash.
  • the calcium oxide may be mixed in an amount of 17 to 40 parts by weight, more preferably 3 to 15 parts by weight based on 100 parts by weight of the fly ash.
  • the calcium oxide may be mixed in an amount of 25-30 parts by weight, more preferably 7-9 parts by weight, based on 100 parts by weight of the fly ash.
  • the weight ratio of each component may be adjusted within the range of the content in the cement cement binder does not deviate from 60 to 87% by weight, 10 to 35% by weight of calcium oxide and 1 to 15% by weight of calcium chloride.
  • the cementless binder may have a compressive strength of 10 MPa or more, 15 MPa or more, preferably 20 MPa or more, 30 MPa or more, 40 MPa or more, or 45 MPa or more during curing for 28 days.
  • the cementless binder includes 70 to 85 wt% of the fly ash, 12 to 27 wt% of the calcium oxide, and 3 to 10 wt% of the calcium chloride, and may have a compressive strength of 20 MPa or more upon curing for 28 days. have.
  • the binder may have a compressive strength of 10 to 50 MPa, 15 to 50 MPa, 20 to 50 MPa, 30 to 50 MPa, 40 to 50 MPa, or 45 to 50 MPa during curing for 28 days.
  • the compressive strength of the binder is measured on the basis of 28 days after curing, it was confirmed that in the case of cementless binder according to the invention measured up to 40 ⁇ 50 MPa.
  • the binder may have a dry density of 0.85 to 1.2 g / cm 3 during curing for 28 days.
  • the dry density means the density of the cured binder when the cured binder is dried at 100 to 110 ° C. until there is no variation in weight, and the moisture is not contained in the cured binder.
  • the cementless binder may have a hydrogen ion concentration (pH) in the range of 12.5 to 14.
  • pH hydrogen ion concentration
  • the cementless binder has a powder form and can be mixed with other materials to be used in construction or civil engineering.
  • the cement binder has a high content of fly ash, which can significantly reduce carbon dioxide generation compared to conventional cement, and significantly lower the product cost by using low cost components. Physical properties such as can be exhibited.
  • the cement binder is high in strength and low in dry density after curing, it can exhibit a high strength and light weight characteristics, which complements the low strength of the weakness of the natural lightweight binder.
  • the cement binder exhibits excellent physical properties in terms of adsorption of heavy metals after curing.
  • the cementless binder is not burned, unlike the existing organic insulating material, because it is made of a material that does not emit toxic gas can be used as a heat-resistant and non-flammable insulation and sound-absorbing material.
  • the material can be used in a variety of construction or civil engineering sites because the flame resistance and non-combustibility can be maintained even if the curing conditions are different.
  • cementless mortar and cementless concrete including the cementless binder is provided.
  • a cementless concrete product including the cementless concrete is provided.
  • the cementless concrete product comprises concrete piles, bricks, blocks, tiles, boundary stones, sewer pipes, prestressed concrete, concrete panels, concrete pipes, aerated concrete, manholes, asphalt concrete, reinforced concrete, and concrete structures. It may include.
  • step (A) preferably 17 to 40 parts by weight of the calcium oxide and 3 to 15 parts by weight of the calcium chloride may be mixed with respect to 100 parts by weight of the fly ash.
  • the mixing ratio of each component may be adjusted within the range of the content in the dry mixed powder 60 ⁇ 87% by weight, 10 ⁇ 35% by weight of calcium oxide and 1 ⁇ 15% by weight of calcium chloride.
  • 40 to 70 parts by weight of water may be mixed with respect to 100 parts by weight of the dry mixed powder.
  • workability of the dough may be greatly reduced, and when it is mixed at more than 70 parts by weight, the curing time becomes considerably longer. The strength may drop sharply.
  • the cement binder paste according to the present invention prepared by mixing water in the numerical range may have a large amount of internal voids after curing (curing), and thus may have an improved sound absorption effect, heat insulation effect, and heavy metal adsorption capacity. have.
  • 40 to 60 parts by weight of water or 40 to 50 parts by weight of water may be mixed with respect to 100 parts by weight of the dry mixed powder.
  • step (B) may be mixed with 40 to 50 parts by weight of water with respect to 100 parts by weight of the dry mixed powder, it may be more advantageous for the cement binder paste to exhibit a high compressive strength after curing within the blending ratio.
  • step (B) may be mixed with 60 to 70 parts by weight of water with respect to 100 parts by weight of the dry mixed powder, when the cemented binder binder is cured and dried after curing and drying in the blending ratio, high light weight, sound absorption and thermal insulation It may be more advantageous to exert.
  • the dry mixed powder is prepared by mixing 70 to 85% by weight of fly ash, 12 to 27% by weight of calcium oxide and 3 to 10% by weight of calcium chloride;
  • step (B) 40 to 50 parts by weight of water may be mixed with respect to 100 parts by weight of the dry mixed powder.
  • the material separation between the binder and the water is reduced, the workability is improved, the initial crack is excellent, the state can be homogeneous while the long-term strength is excellent.
  • the cement binder paste thus prepared may be cured through curing.
  • the cement binder paste can be cured in a constant temperature and humidity conditions of 50 ⁇ 70 °C and relative humidity 70 ⁇ 100% range. More specifically, the curing may be carried out at a constant temperature and humidity conditions of 55 ⁇ 60 °C and 95 ⁇ 100% relative humidity. In addition, the curing may be performed for 3 to 30 days, or may be performed for 20 to 30 days.
  • various building materials may be added to the cement binder paste.
  • the additionally added building materials may be aggregates, fibers, binders, additives commonly used in construction or civil engineering.
  • the cement binder paste When the cement binder paste is cured in the mold, it may be cured in a block form or the like. Alternatively, the cementless binder paste may be pulverized after curing and processed into a powder form.
  • the powdered cementless binder after curing can significantly improve the heavy metal adsorption capacity.
  • 60 to 70 parts by weight of water is mixed with 100 parts by weight of dry mixed powder containing 70 to 85% by weight of fly ash, 12 to 27% by weight of calcium oxide (CaO) and 3 to 10% by weight of calcium chloride (CaCl 2 ).
  • the powder obtained by curing and pulverizing the resulting paste can be very light and heavy metal adsorption capacity.
  • the cement binder paste is also used in concrete products such as concrete piles, bricks, blocks, tiles, boundary stones, sewer pipes, prestressed concrete, concrete panels, concrete pipes, aerated concrete, manholes, asphalt concrete, reinforced concrete, and concrete structures It can be cured in the form.
  • the cementless binder paste may be applied to a construction site such as concrete construction and may be cured into a part of a building.
  • a large amount of internal voids may be formed through absolute drying.
  • the absolute drying may be performed at a temperature condition of 80 °C to 120 °C, more specifically 90 °C to 120 °C, for example 100 °C.
  • the absolute drying may be performed for 12 to 36 hours, more specifically for 24 to 30 hours.
  • the cutting density can be adjusted to 0.85 to 1.2 g / cm 3, or 0.85 to 1.0 g / cm 3.
  • Pastes were formed by adding water to the dry mixed powder (cementless binder) having various compositions prepared in Examples 1 and 2 and Comparative Example 1, respectively. At this time, 40 parts by weight of water was added to 100 parts by weight of the dry mixed powder prepared in Example 1, and 70 parts by weight of water was added to 100 parts by weight of the dry mixed powder prepared in Examples 2 and Comparative Example 1.
  • Curing block was prepared by curing the cementless binder paste prepared in Preparation Example 1 for 28 days while maintaining the temperature at 60 ° C. and relative humidity of 70 to 100% in a cubic mold each having a width, length, and height of 50 mm.
  • the cement cement binder according to the present invention exhibits high strength and light weight after curing (curing) is low, it can be seen that can replace the commercial cement.
  • Example 2 The paste obtained by adding water to the cement cement binder (dry mixed powder) prepared in Example 2 and Comparative Example 1 was maintained at 60 ° C. and a relative humidity of 70 to 100% in a cubic mold each having 50 mm in width, length, and height.
  • Each cured block sample was prepared by curing for 3 days.
  • some cured block samples were ground to obtain cured powder samples.
  • Table 1 The binder composition, mixing ratio with water, and crushing of each of these cured blocks and cured powder samples are summarized in Table 1 below.
  • Table 1 The binder composition, mixing ratio with water, and crushing of each of these cured blocks and cured powder samples are summarized in Table 1 below.
  • Table 1 The binder composition, mixing ratio with water, and crushing of each of these cured blocks and cured powder samples are summarized in Table 1 below.
  • the dry density of the hardened block samples was measured and summarized together in Table 1.
  • the samples were immersed in a chromium solution at 415.5 mg / L for 2 days to adsorb chromium, and the chromium concentration (before and after adsorption) of the aqueous chromium solution was measured using ICP-OES equipment, and is shown in FIG. 4.
  • CCF_0.7 has a lower dry density than CCF_0.4, while in Figure 4, heavy metal (chromium) adsorption capacity is relatively higher than CCF_0.4, and the lower the dry density, the more voids are formed. This means that the adsorption of heavy metals can be carried out more easily.
  • CF_0.7 according to the comparative example is similar to CCF_0.7 and cutting density according to the embodiment, but in Figure 4 it was evaluated that the heavy metal (chromium) adsorption capacity is much lower than CCF_0.7. This is due to the fact that CF_0.7 does not contain calcium chloride, so that no reaction product hydrocalumite was produced.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)
PCT/KR2016/012775 2016-01-11 2016-11-08 무시멘트 결합재 및 이의 응용 WO2017122916A1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
RU2018129097A RU2705646C1 (ru) 2016-01-11 2016-11-08 Бесцементное вяжущее вещество и его применение
CN201680078357.9A CN108473373A (zh) 2016-01-11 2016-11-08 无水泥粘合剂及其应用

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KR10-2016-0003160 2016-01-11
KR1020160003160A KR101773961B1 (ko) 2016-01-11 2016-01-11 무시멘트 결합재 및 이의 응용

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KR101982087B1 (ko) * 2017-07-25 2019-06-03 주식회사 하우이씨엠 바텀애쉬를 이용한 층간소음 방지보드 제조 방법 및 이에 의해 제조된 층간소음 방지보드
WO2019112079A1 (ko) * 2017-12-05 2019-06-13 한양대학교 에리카산학협력단 이온 교환 수지를 포함하는 알칼리 활성 결합재 구조물, 및 그 제조 방법
KR102100404B1 (ko) * 2018-06-27 2020-04-13 울산과학기술원 백색 경화체 및 이를 제조하기 위한 조성물
KR102041733B1 (ko) * 2018-12-05 2019-11-08 한국석회석신소재연구재단 순환유동층연소 비산재를 이용한 칼슘계 배연탈황 흡수제 및 이의 제조방법
US11414353B2 (en) 2019-04-23 2022-08-16 King Fahd University Of Petroleum And Minerals Room temperature cured green concrete derived from natural pozzolan and nanosilica
CN111704433A (zh) * 2020-07-02 2020-09-25 中国海洋石油集团有限公司 一种复合固化剂及应用
KR102265152B1 (ko) 2020-11-05 2021-06-15 주식회사 위드엠텍 건설용 친환경 결합재 조성물
CN113860784A (zh) * 2021-11-02 2021-12-31 惠州市惠政新材料科技有限公司 粉料掺合剂及含有粉料掺合剂的混凝土

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