KR20180020643A - Ultra high performance concrete composite using industrial by-products - Google Patents

Abstract

Provided is an ultra-high performance concrete composite (UHPC) utilizing an industrial by-product which can reduce the production costs by utilizing at least one industrial by-product such as ground granulated blast furnace slag (GGBFS), limestone powder, bottom ash, rapid-cooled electric arc furnace oxidizing slag (REOS), etc. in production of the UHPC, can be eco-friendly produced by utilizing the industrial by-product such as the GGBFS, the limestone powder, the bottom ash, the REOS, etc., and can increase the fluidity in the production of the UHPC by utilizing the GGBFS or the limestone powder as a cement substitution bonding material.

Description

TECHNICAL FIELD [0001] The present invention relates to a high-performance concrete composition using an industrial by-

The present invention relates to an ultra high performance concrete, and more particularly, to an ultra high performance concrete which comprises a ground granulated blast-furnace slag (GGBFS), a limestone powder, a bottom ash, Ultra high performance concrete (UHPC) composition manufactured by using industrial by-products such as rapid-cooled, electric arc furnace oxidizing slag (REOS).

Ultra High Performance Concrete (UHPC) is a material of worldwide interest as a high density matrix structure having a very high compression strength of about 130 MPa or more, high ductility, impact resistance and high durability.

However, the materials that make up this ultra high performance concrete (UHPC) are not only energy consuming materials but also high carbon dioxide emissions, which is a construction material that is adversely affecting the environment. In particular, portland cement, one of the components of ultra high performance concrete (UHPC), has been reported to produce about 1.6 billion tons per year, accounting for 7% of total carbon dioxide emissions.

Silica powder and Silica Sand are very expensive materials compared to ordinary concrete materials among materials that make up ultra high performance concrete (UHPC). Therefore, the use of expensive ultra high performance concrete (UHPC) is limited to a part of a structure, and currently, studies for replacing silica fine powder and silica sand with low cost materials are being actively carried out.

For example, Natural Pozzolana, Fly ash, Limestone Powder, Cement Kiln Dust, Pulverized Steel Slag, and the like can be used as low-cost materials such as silica fume Silica fume) and UHPC substituted with silica sand have been disclosed, and environmentally friendly UHPC formulations in which expensive silica sand has been replaced by natural sand has been disclosed.

However, in the case of ultra-high performance concrete (UHPC) according to the conventional technology, there is a problem that performance is lowered when a low-cost material is substituted. Therefore, manufacturing cost of ultra high performance concrete (UHPC) .

Korean Patent No. 10-1628672 filed on Jul. 30, 2014, entitled "Method of manufacturing ultra high performance concrete preventing surface drying of concrete using oil-based surface finishing agent" Korean Patent No. 10-660386 filed on Feb. 17, 2004, entitled "High Performance Concrete Composition Using Bottom Ash, Concrete Product and Method for Producing the Product" Korean Patent No. 10-1612113 filed on October 13, 2015, entitled "Binder composition for concrete and concrete composition containing the same" Korean Patent No. 10-1604723 filed on Jul. 4, 2014, entitled "Multicomponent Low-Carbon Eco-Concrete Composition and Method for its Mixing" Korean Patent No. 10-1547272 filed on January 22, 2008, entitled "High Strength Cement, Mortar and Concrete Containing Industrial Byproducts" Korean Patent No. 10-1591275 filed on July 30, 2014, entitled "Ultra High Strength Concrete with Improved Workability &

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a method for producing ultra high performance concrete, which comprises at least one of industrial byproducts such as blast furnace slag fine powder (GGBFS), limestone fine powder, bottom ash, High-performance concrete composition utilizing industrial by-products, which can reduce the manufacturing cost by making full use of the resin composition.

Another object of the present invention is to provide a method for producing an ultra-high performance concrete which is capable of producing an ultra-high performance concrete by utilizing industrial byproducts such as blast furnace slag fine powder (GGBFS), limestone fine powder, bottom ash and quench electric furnace oxidation slag And to provide an ultra high performance concrete composition using a byproduct.

Another object of the present invention is to provide an ultra high performance concrete using an industrial byproduct which can increase fluidity in the production of an ultra high performance concrete composition by using a blast furnace slag fine powder (GGBFS) or a limestone fine powder as a binder for cement substitution To provide a composition.

As a means for achieving the above technical object, an ultra high performance concrete composition using industrial byproducts according to the present invention is characterized by comprising 100 parts by weight of cement as a binder in an ultra high performance concrete composition using industrial byproducts; A binder mixed with the cement, wherein 16 to 30 parts by weight of silica fume based on 100 parts by weight of the cement; A binder mixed with the cement, wherein 12 to 30 parts by weight of fine silica powder, based on 100 parts by weight of cement; An industrial byproduct mixed with 0 to 40% replacement of the cement, wherein 0 to 40 parts by weight of blast furnace slag fine powder based on 100 parts by weight of cement; Mixing water mixed with the binder, wherein 19 to 24 parts by weight of water based on 100 parts by weight of the cement; 2.4 to 4.8 parts by weight of a superfluidizer mixed with the binder and based on 100 parts by weight of cement; Wherein the reinforcing fiber is 1.5 to 7.5 parts by weight based on 100 parts by weight of the cement; And sand mixed with the binder, and comprises 90 to 120 parts by weight of aggregate based on 100 parts by weight of cement.

As another means for accomplishing the above technical object, an ultra high performance concrete composition using an industrial by-product according to the present invention is a super high performance concrete composition utilizing an industrial by-product, wherein 100 parts by weight of cement; A binder mixed with the cement, wherein 16 to 30 parts by weight of silica fume based on 100 parts by weight of the cement; A binder mixed with the cement, wherein 12 to 30 parts by weight of fine silica powder, based on 100 parts by weight of cement; Industrial by-products mixed to substitute 0-30% of the cement, 0-30 parts by weight of limestone fine powder based on 100 parts by weight of cement; Mixing water mixed with the binder, wherein 19 to 24 parts by weight of water based on 100 parts by weight of the cement; 2.4 to 4.8 parts by weight of a superfluidizer mixed with the binder and based on 100 parts by weight of cement; A steel fiber impregnated in the binder, 1.5 to 7.5 parts by weight of reinforcing fiber based on 100 parts by weight of cement; And sand mixed with the binder, and comprises 90 to 120 parts by weight of aggregate based on 100 parts by weight of cement.

As another means for accomplishing the above technical object, an ultra high performance concrete composition using an industrial by-product according to the present invention is a super high performance concrete composition utilizing an industrial by-product, wherein 100 parts by weight of cement; A binder mixed with the cement, wherein 16 to 30 parts by weight of silica fume based on 100 parts by weight of the cement; A binder mixed with the cement, wherein 12 to 30 parts by weight of fine silica powder, based on 100 parts by weight of cement; An industrial byproduct mixed with 0 to 40% replacement of the cement, wherein 0 to 40 parts by weight of blast furnace slag fine powder based on 100 parts by weight of cement; An industrial by-product which is mixed so as to replace the silica fine powder by 0 to 100%, wherein the bottom ash is 12 to 30 parts by weight based on 100 parts by weight of the cement; Mixing water mixed with the binder, wherein 19 to 24 parts by weight of water based on 100 parts by weight of the cement; 2.4 to 4.8 parts by weight of a superfluidizer mixed with the binder and based on 100 parts by weight of cement; Wherein the reinforcing fiber is 1.5 to 7.5 parts by weight based on 100 parts by weight of the cement; And sand mixed with the binder, and comprises 90 to 120 parts by weight of aggregate based on 100 parts by weight of cement.

As another means for accomplishing the above technical object, an ultra high performance concrete composition using an industrial by-product according to the present invention is a super high performance concrete composition utilizing an industrial by-product, wherein 100 parts by weight of cement; A binder mixed with the cement, wherein 16 to 30 parts by weight of silica fume based on 100 parts by weight of the cement; A binder mixed with the cement, wherein 12 to 30 parts by weight of fine silica powder, based on 100 parts by weight of cement; Industrial by-products mixed to substitute 0-30% of the cement, 0-30 parts by weight of limestone fine powder based on 100 parts by weight of cement; An industrial by-product which is mixed so as to replace the silica fine powder by 0 to 100%, wherein the bottom ash is 12 to 30 parts by weight based on 100 parts by weight of the cement; Mixing water mixed with the binder, wherein 19 to 24 parts by weight of water based on 100 parts by weight of the cement; 2.4 to 4.8 parts by weight of a superfluidizer mixed with the binder and based on 100 parts by weight of cement; Wherein the reinforcing fiber is 1.5 to 7.5 parts by weight based on 100 parts by weight of the cement; And sand mixed with the binder, and comprises 90 to 120 parts by weight of aggregate based on 100 parts by weight of cement.

As another means for accomplishing the above technical object, an ultra high performance concrete composition using an industrial by-product according to the present invention is a super high performance concrete composition utilizing an industrial by-product, wherein 100 parts by weight of cement; A binder mixed with the cement, wherein 16 to 30 parts by weight of silica fume based on 100 parts by weight of the cement; A binder mixed with the cement, wherein 12 to 30 parts by weight of fine silica powder, based on 100 parts by weight of cement; An industrial byproduct mixed with 0 to 40% replacement of the cement, wherein 0 to 40 parts by weight of blast furnace slag fine powder based on 100 parts by weight of cement; An industrial by-product which is mixed so as to replace the silica fine powder by 0 to 100%, wherein the bottom ash is 12 to 30 parts by weight based on 100 parts by weight of the cement; Mixing water mixed with the binder, wherein 19 to 24 parts by weight of water based on 100 parts by weight of the cement; 2.4 to 4.8 parts by weight of a superfluidizer mixed with the binder and based on 100 parts by weight of cement; Wherein the reinforcing fiber is 1.5 to 7.5 parts by weight based on 100 parts by weight of the cement; Sand mixed with the binder, wherein 90 to 120 parts by weight of aggregate based on 100 parts by weight of cement; And an industrial by-product mixed with 0 to 100% of the aggregate to be substituted, wherein 90 to 120 parts by weight of quench-type electric furnace slag is contained based on 100 parts by weight of cement.

As another means for accomplishing the above technical object, an ultra high performance concrete composition using an industrial by-product according to the present invention is a super high performance concrete composition utilizing an industrial by-product, wherein 100 parts by weight of cement; A binder mixed with the cement, wherein 16 to 30 parts by weight of silica fume based on 100 parts by weight of the cement; A binder mixed with the cement, wherein 12 to 30 parts by weight of fine silica powder, based on 100 parts by weight of cement; Industrial by-products mixed to substitute 0-30% of the cement, 0-30 parts by weight of limestone fine powder based on 100 parts by weight of cement; An industrial by-product which is mixed so as to replace the silica fine powder by 0 to 100%, wherein the bottom ash is 12 to 30 parts by weight based on 100 parts by weight of the cement; Mixing water mixed with the binder, wherein 19 to 24 parts by weight of water based on 100 parts by weight of the cement; 2.4 to 4.8 parts by weight of a superfluidizer mixed with the binder and based on 100 parts by weight of cement; Wherein the reinforcing fiber is 1.5 to 7.5 parts by weight based on 100 parts by weight of the cement; Sand mixed with the binder, wherein 90 to 120 parts by weight of aggregate based on 100 parts by weight of cement; And an industrial by-product mixed with 0 to 100% of the aggregate to be substituted, wherein 90 to 120 parts by weight of quench-type electric furnace slag is contained based on 100 parts by weight of cement.

According to the present invention, manufacturing cost can be reduced by utilizing at least one industrial by-product such as blast furnace slag fine powder (GGBFS), limestone fine powder, bottom ash, quenching furnace slag (REOS), etc. in the production of ultra high performance concrete.

According to the present invention, by using industrial by-products such as blast furnace slag fine powder (GGBFS), limestone fine powder, bottom ash, quench electric furnace slag (REOS), and the like, ultra high performance concrete can be produced in an environmentally friendly manner.

According to the present invention, by using the blast furnace slag fine powder (GGBFS) or the limestone fine powder as the binder for cement substitution, it is possible to increase the fluidity in the production of the ultra high performance concrete composition.

1 is a view schematically showing an ultra high-performance concrete which does not utilize industrial by-products.
2 is a schematic view of an ultra high performance concrete utilizing an industrial byproduct according to an embodiment of the present invention.
3 is a view illustrating a composition of an ultra high performance concrete utilizing industrial byproducts according to an embodiment of the present invention.
4 is a graph showing the content of a binder in an ultra high-performance concrete utilizing industrial by-products according to an embodiment of the present invention.
5 is a view illustrating the price of a material in an ultra high-performance concrete utilizing industrial by-products according to an embodiment of the present invention.
FIG. 6 is a photograph illustrating steel fiber and quench-type electric furnace slag in an ultra-high-performance concrete using industrial by-products according to an embodiment of the present invention.
FIG. 7 is a view illustrating mixing of ultra high-performance concrete using industrial by-products according to an embodiment of the present invention.
8 is a view showing the compressive strengths of the embodiments shown in Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Ultra-high performance concrete composition without using industrial by-products (Comparative Example)]

1 is a view schematically showing an ultra high-performance concrete which does not utilize industrial by-products.

1, an ultra-high performance concrete 100 that does not utilize industrial byproducts includes cement 110, silica fume 120, silica powder 130, water 140 A superplasticizer 150, a reinforcing fiber 160 and an aggregate 170. The reinforcing fiber 160 is made of steel fiber and the aggregate 170 is made of sand or silica Is used. Hereinafter, as a comparative example of the ultra high performance concrete 200 using the industrial byproducts according to the embodiment of the present invention, the ultra high performance concrete 100 not using the industrial byproducts will be explained.

The industrial by-products used in the UHPC blending design according to the embodiment of the present invention include ground granulated blast-furnace slag (GGBFS), limestone powder, bottom ash and quenched electric furnace oxidation slag Rapid-cooled, Electric arc furnace Oxidizing Slag: REOS). Hereinafter, the ultrahigh performance concrete using the industrial by-products according to the embodiment of the present invention will be described in detail with reference to FIG. 2 to FIG.

[Ultra High Performance Concrete Composition Using Industrial Byproducts]

FIG. 2 is a schematic view of an ultra high-performance concrete utilizing industrial by-products according to an embodiment of the present invention, and FIG. 3 is a view illustrating a composition of ultra-high performance concrete utilizing industrial by-products according to an embodiment of the present invention.

2, an ultra-high-performance concrete 200 using an industrial by-product according to an embodiment of the present invention includes cement 110, silica fume 120, silica powder 130, As a byproduct, a blast furnace slag fine powder 210 for cement substitution, a limestone fine powder 220 for cement substitution as an industrial by-product, a bottom ash 230 for replacement of silica fine powder as an industrial by-product, water 140, (REOS) (240) for aggregate replacement, which is a rapid-cooled, electric arc furnace oxidizing slag (REOS) 240, as the steel 150, the reinforcing fiber 160, the aggregate 170, A steel fiber is used as the reinforcing fiber 160, and sand or silica sand may be used as the aggregate 170.

3, in an ultra high performance concrete composition using industrial by-products according to an embodiment of the present invention, the cement 110 is a binder, which is based on 100 parts by weight of cement and contains 55 to 75% For example, one kind of ordinary Portland cement (OPC).

The silica fume 120 is a binder to be mixed with the cement 110 and may contain 16 to 30 parts by weight based on 100 parts by weight of the cement 110. [ Specifically, when the silica fume 120 is less than 16 parts by weight, the strength development of the ultra high performance concrete is reduced. Accordingly, 16 parts by weight or more is required for the development of compressive strength of 150 MPa or more. When the amount of the silica fume (120) exceeds 30 parts by weight, it is difficult to secure the workability as the viscosity increases and the manufacturing cost increases.

The fine silica powder 130 is a binder to be mixed with the cement 110 and may contain 12 to 30 parts by weight based on 100 parts by weight of the cement 110. [ Particularly, when the amount of the fine silica powder 130 is less than 12 parts by weight, porosity of the UHPC increases according to a typical Particle Packing Theory calculation, and thus the strength of the UHPC can be reduced. If the amount of the fine silica powder 130 is more than 30 parts by weight, the porosity of the UHPC increases according to a typical Particle Packing Theory calculation. Accordingly, the strength of the UHPC is reduced, Costs can be higher because they are more expensive than silica sand.

The blast furnace slag fine powder (GGBFS: 210) is an industrial by-product to be mixed with 0 to 40% replacement of the cement 110, and may contain 0 to 40 parts by weight based on 100 parts by weight of the cement (110). Here, the blast furnace slag (210) is a three-kind slag, which is a by-product obtained in the manufacture of pig iron in a blast furnace, and has a positive effect on the environmental and economic aspects when the concrete is partially replaced with cement It is reported that it can be expected. In addition, UHPC is a potential hydraulic material that lowers porosity and improves durability, and is a concrete material used throughout the world for many years. Specifically, the blast furnace slag fine powder 210 is a binder for cement substitution and can be substituted by 0 to 40% of the volume of the cement. For example, when the blast furnace slag fine powder 210 exceeds 40 parts by weight, the initial strength is lowered due to the initial hydration delay, and an additional activator may be required. The advantage of using the blast furnace slag powder 210 is that the fluidity of the concrete can be increased and the amount of natural aggregate used can be reduced.

The limestone powder 220 is an industrial by-product which is mixed with 0-30% replacement of the cement 110 and may contain 0-30 parts by weight based on 100 parts by weight of the cement 110. For example, when the limestone fine powder 220 is used in an amount of more than 30 parts by weight, the strength of the ultra high-performance concrete may be lowered . At this time, the advantage of using the limestone fine powder 220 is that it can increase the fluidity of ultra-high performance concrete and can also reduce the amount of cement used in ultra-high performance concrete.

The bottom ash 230 is an industrial by-product which is mixed with 0 to 100% of the silica fine powder 130 to replace the silica fine powder 130. The bottom ash 230 may contain 12 to 30 parts by weight based on 100 parts by weight of the cement 110. Specifically, the bottom ash 230 is a by-product generated in a thermal power plant together with fly ash, and is a coal ash generated in the course of fossil fuel combustion. The bottom ash 230 has a particle size of 0.2 to 25 μm And the silica fine powder 130 may be substituted by 0 to 100%.

The water 140 may be blended with the binder and may contain 19 to 24 parts by weight based on 100 parts by weight of the cement (110). When the amount of the water 140 is less than 19 parts by weight, the concrete is difficult to form, the amount of the superabsorbing agent 150 is increased, and the cost is increased. When the amount of the water 140 is more than 24 parts by weight, .

The colloid sizing agent 150 may be mixed with the binder and contain 2.4 to 4.8 parts by weight based on 100 parts by weight of the cement 110. [ Specifically, it is preferable that the superabsorbent 150 is also used as a high-performance water reducing agent, and a polycarboxylate system having a solid content ratio of 25% of the admixture is used and the weight ratio of the solid matter is calculated. For example, when the amount of the superabsorbent 150 is less than 2.4 parts by weight, the mixing of the concrete is difficult, and when the amount of the superabsorbent is more than 4.8 parts by weight, the manufacturing cost increases.

The reinforcing fiber 160 may be a steel fiber mixed with the binder and may contain 1.5 to 7.5 parts by weight based on 100 parts by weight of the cement 110. [ Specifically, when the reinforcing fiber 160 is less than 1.5 parts by weight (or 0.5% of the total volume of the concrete), it is difficult to suppress the brittle fracture of the concrete and the strength is lowered, and 7.5 parts by weight (or 2.5% ), The mixing of the concrete is difficult and the cost is increased.

The aggregate (170) is sand mixed with the binder and may contain 90 to 120 parts by weight based on 100 parts by weight of the cement (110). Specifically, the aggregate 170 uses sand having a particle size of 10 to 1.5 mm. For example, if the amount is less than 90 parts by weight, the cost increases. If the aggregate exceeds 120 parts by weight, the strength may decrease.

The quenching furnace oxidation slag (REOS) 240 is an industrial by-product which is mixed with 0 to 100% replacement of the aggregate 170, and may contain 90 to 120 parts by weight based on 100 parts by weight of the cement 110. Here, the quench furnace oxidation slag (REOS) 240 is an oxidizing slag generated as a by-product of steelmaking slag during quenching of steelmaking slag. Since the particles of the quench-type electric furnace oxidation slag (REOS: 240) have a smooth and round shape, the concrete using the quench-type electric furnace oxidation slag (REOS: 240) can be expected to have an effective fluidity due to the ball bearing effect . Specifically, the quenching furnace oxidation slag (REOS) 240 is an aggregate, and its particle size is the same as that of aggregate sand 170, and the sand 170 can be substituted by 0 to 100% by volume. Here, the advantage of using the quenching furnace oxidation slag (REOS) 240 is to increase the fluidity and reduce the amount of natural aggregate.

Meanwhile, FIG. 4 is a graph showing the content of a binder in an ultra high-performance concrete using industrial by-products according to an embodiment of the present invention.

In the case of ultra high-performance concrete utilizing industrial by-products according to the embodiment of the present invention, a large amount of industrial by-products are mixed. At this time, as shown in FIG. 4, the used industrial by- products are blast furnace slag Blast furnace slag, and Bottom ash powder produced by a thermal power plant. Particularly, a blast furnace slag having an average particle diameter of 20 mu m (specific surface area of 3000 cm2 / g) used as a conventional binder for replacing cement can be used.

For example, the replacement of conventional blast furnace slag with 40 vol.% Of cement showed that the fluidity of UHPC was partially increased, while the initial strength at 24 h was significantly reduced. In addition, when the bottom ash fine powder was used in place of the fine silica powder, the fluidity was increased, which was higher than the fluidity when the same amount of fly ash was replaced with the fine silica powder.

In this case, the bottom ash fine powder used was a material having a smaller particle size than that of fly ash, and the result was in contrast to the conventional result that the fluidity of the concrete was inferior when powder having a small particle size was used. For example, UHPC, in which the bottom ash fine powder was replaced with silica fine powder, was found to have an initial compression strength more than twice that of the fly ash having the same volume ratio for 24 hours after pouring. This was contrary to the conventional results, which are generally known to have a low effect on the strength of concrete compared to fly ash. When the bottom ash is broken, it is presumed that this phenomenon will occur because the portion having high pozzolanic reactivity inside the bottom ash is exposed to the outside. Thus, by replacing the cement 110, the fine silica powder 130, the sand 170, or the silica fume 120, which are used in the comparative examples, with suitable industrial byproducts, it is possible to reduce the environmental friendliness and reduce the material cost Is possible.

FIG. 5 is a view illustrating the price of materials in an ultra-high performance concrete using industrial by-products according to an embodiment of the present invention. FIG. And quenched electric furnace slag.

The shape of the steel fiber 160 is linear as shown in Fig. 6a), and has a tensile strength of 0.250 mm in diameter and 19.5 mm in length and 2450 MPa or more. The super-fluidizer 150 used to secure the fluidity of the ultra-high-performance concrete 200 utilizing the industrial by-products according to the embodiment of the present invention is an admixture of Polycarboxylate type (solid content 25%). The price per unit weight of all materials used is as shown in Fig.

The shape of the REOS 240 is as shown in Fig. The REOS 240 is an alternative material to the sand 170 and its particle size is adjusted to be similar in particle size distribution to the sand 170.

Meanwhile, FIG. 7 is a view illustrating mixing of ultra high performance concrete using industrial byproducts according to an embodiment of the present invention, and FIG. 8 is a view showing compressive strength of the embodiments shown in FIG.

First, all of the ultra high performance concrete using the industrial byproducts according to the embodiment of the present invention was manufactured in the same manner as the Hobart type mixer. For example, the silica fume 120 and the aggregate 170 were dry mixed for 5 minutes and the cement 110, the silica fine powder 130, the bottom ash 230, the GGBFS 210, . After the addition of water (140) and colloid stabilizer (150), the mixture was remixed and most of the mixtures were fluidized in 3 minutes. The flowability of the unhardened UHPC was evaluated by the flow value measured according to ASTM C230 / C230M standard. In addition, the flow of the blending with the addition of the steel fiber (170) was added after the addition of the steel fiber (170) and measured 5 minutes later. Thereafter, it was poured into a 50x50x50 정 cube mold without vibration, covered with vinyl to prevent surface evaporation and plastic shrinkage, and then stored at room temperature for 24 hours. The specimens were cured in a water bath at 23 ° C. After curing, they were stored at room temperature for 24 hours and then subjected to a compressive strength test according to KS F 2405 in a dry state.

First Embodiment

As shown in FIG. 7, the ultra-high performance concrete using the industrial byproduct according to the first embodiment of the present invention includes cement 110, ground granulated blast furnace slag (GGBFS) 210, And the aggregate 170. In comparison with the above-described comparative example, the cement 110 has a relatively large volume of the cement 110, For example, 24% of the cement 110 is replaced with GGBFS 210 which is a by-product of the blast furnace slag.

Specifically, the ultrahigh performance concrete composition using the industrial byproduct according to the first embodiment of the present invention is a binder having 100 parts by weight of cement 110; A binder mixed with the cement (110), wherein 16 to 30 parts by weight of silica fume (120) based on 100 parts by weight of the cement (110); 12 to 30 parts by weight of fine silica powder (130) based on 100 parts by weight of the cement (110) as a binder to be mixed with the cement (110); 0 to 40 parts by weight of a blast furnace slag powder (GGBFS: 210) based on 100 parts by weight of the cement (110); Mixing water to be mixed with the binder, wherein 19 to 24 parts by weight of water (140) based on 100 parts by weight of cement (110); 2.4 to 4.8 parts by weight of a superplasticizer (150) mixed with the binder and based on 100 parts by weight of the cement (110); Steel fibers mixed into the binder include 1.5 to 7.5 parts by weight of reinforcing fibers 160 based on 100 parts by weight of cement 110; And sand mixed with the binder, and the aggregate 170 of 90 to 120 parts by weight based on 100 parts by weight of the cement 110.

As shown in FIG. 8, the compressive strength of the ultra high-performance concrete using the industrial by-product according to the first embodiment of the present invention is 130 MPa or more as compared with the above-mentioned comparative example.

Second Embodiment

7, the ultra high performance concrete utilizing the industrial byproduct according to the second embodiment of the present invention includes cement 110, limestone powder 220, silica fume 120, fine silica powder The reinforcing fiber 160 and the aggregate 170. In comparison with the above-described comparative example, a part of the cement 110, for example, 24% of the cement 110 is replaced with limestone fine powder 220 which is an industrial by-product.

Specifically, an ultra high performance concrete composition using an industrial byproduct according to the second embodiment of the present invention comprises 100 parts by weight of cement 110 as a binder; A binder mixed with the cement (110), wherein 16 to 30 parts by weight of silica fume (120) based on 100 parts by weight of the cement (110); 12 to 30 parts by weight of fine silica powder (130) based on 100 parts by weight of the cement (110) as a binder to be mixed with the cement (110); An industrial by-product which is mixed to replace the cement 110 by 0 to 30%, wherein 0 to 30 parts by weight of limestone powder 220 based on 100 parts by weight of the cement 110; And water (W: 140) of 19 to 24 parts by weight based on 100 parts by weight of the cement (110); 2.4 to 4.8 parts by weight of the superfluidizer (150) mixed with the binder and based on 100 parts by weight of the cement (110); Steel fibers mixed into the binder include 1.5 to 7.5 parts by weight of reinforcing fibers 160 based on 100 parts by weight of cement 110; And sand mixed with the binder, and the aggregate 170 of 90 to 120 parts by weight based on 100 parts by weight of the cement 110.

As shown in FIG. 8, the compressive strength of the ultrahigh performance concrete using the industrial byproduct according to the second embodiment of the present invention is 130 MPa or more as compared with the above-mentioned comparative example.

Third Embodiment

7, the ultra high performance concrete utilizing the industrial byproduct according to the third embodiment of the present invention includes cement 110, blast furnace slag fine powder (GGBFS) 210, silica fume 120, fine silica powder The cement 110 includes a bottom ash 130, a bottom ash 230, water 140, a superabsorbent 150, reinforcing fibers 160 and an aggregate 170. In comparison with the above- For example, 24% of the cement 110 is replaced with a blast furnace slag powder 210 which is an industrial by-product, and 50% of the silica fine powder 130 is replaced with a bottom ash 230 .

As shown in FIG. 8, the compressive strength of the ultrahigh performance concrete using the industrial byproduct according to the third embodiment of the present invention is 130 MPa or more as compared with the above-mentioned comparative example.

Fourth Embodiment

7, the ultrahigh performance concrete utilizing the industrial byproduct according to the fourth embodiment of the present invention includes cement 110, GGBFS 210, silica fume 120, bottom ash The reinforcing fiber 160 and the aggregate 170. In comparison with the above-described comparative example, a part of the cement 110, for example, 24% of the cement 110 is replaced with a blast furnace slag powder 210 which is an industrial by-product and all the fine silica powder 130 is replaced with a bottom ash 230.

As shown in FIG. 8, the compressive strength of the ultrahigh performance concrete using the industrial byproduct according to the fourth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as compared with the above-mentioned comparative example.

Fifth Embodiment

7, the ultrahigh performance concrete utilizing the industrial byproduct according to the fifth embodiment of the present invention includes cement 110, limestone fine powder 220, silica fume 120, fine silica powder 130, The bottom ash 230, the water 140, the superabsorbent 150, the reinforcing fibers 160 and the aggregate 170. In comparison with the above-mentioned comparative example, a part of the cement 110, 24% of the cement 110 is replaced with a limestone fine powder 220 which is an industrial by-product and 50% of the silica fine powder 130 is replaced with a bottom ash 230.

The compressive strength of the ultra high performance concrete using the industrial byproduct according to the fifth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as shown in FIG. 8 as compared with the above-mentioned comparative example.

Sixth Embodiment

7, the ultrahigh performance concrete utilizing the industrial byproduct according to the sixth embodiment of the present invention includes cement 110, limestone fine powder 220, silica fume 120, bottom ash 230, The cement 110 includes a part of the cement 110, for example, water 140, a superabsorbent 150, reinforcing fibers 160 and aggregate 170. In comparison with the above-described comparative example, 24% of the silica fine powder 130 is replaced with a limestone fine powder 220 which is an industrial by-product, and the entire silica fine powder 130 is replaced with a bottom ash 230.

Compared with the above-described comparative example, the compressive strength of the ultra high performance concrete using the industrial byproduct according to the sixth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as shown in FIG.

Seventh Embodiment

As shown in FIG. 7, the ultra high performance concrete utilizing the industrial byproduct according to the seventh embodiment of the present invention includes cement 110, GGBFS 210, silica fume 120, (130), bottom ash (230), water (140), superfluidizer (150), reinforcing fiber (160), aggregate (170) and quench furnace oxidation slag A part of the cement 110, for example, 24% of the cement 110 is replaced with a blast furnace slag powder 210 which is an industrial by-product, and a part 50 of the cement 110, which is a part of the fine silica powder 130, % Is replaced with bottom ashes 230 and 50% of the aggregate 170 is replaced with quench-type electric furnace slag (REOS) 240.

As shown in FIG. 8, the compressive strength of the ultrahigh performance concrete using the industrial byproduct according to the seventh embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as compared with the above-mentioned comparative example.

Eighth Embodiment

As shown in FIG. 7, an ultra-high performance concrete using an industrial byproduct according to an eighth embodiment of the present invention includes cement 110, a blast furnace slag fine powder (GGBFS) 210, a silica fume 120, (REOS) 240, the water 140, the superabsorbent 150, the reinforcing fiber 160, the aggregate 170, and the quenching furnace oxidation slag (REOS) 240. In comparison with the above- A part of the cement 110, for example, 24% of the cement 110 is replaced with a blast furnace slag fine powder 210 which is an industrial by-product, and the whole of the fine silica powder 130 is replaced with a bottom ash 230 , And 50% of the aggregate 170 is replaced with quench-type electric furnace slag (REOS) 240.

As shown in FIG. 8, the compressive strength of the ultra high-performance concrete using the industrial by-product according to the eighth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as compared with the above-mentioned comparative example.

Example 9

7, the ultra-high performance concrete utilizing the industrial byproduct according to the ninth embodiment of the present invention includes cement 110, limestone fine powder 220, silica fume 120, fine silica powder 130, The bottom ash 230, the water 140, the superabsorbent 150, the reinforcing fiber 160, the aggregate 170, and the quench-furnace furnace oxidation slag (REOS) 240. In comparison with the above- , A part of the cement 110, for example, 24% of the cement 110 is replaced with an industrial by-product limestone fine powder 220, and 50% of the fine silica powder 130 is replaced by bottom ash 230), and 50% of the aggregate 170 is replaced with quench electric furnace slag (REOS: 240).

As shown in FIG. 8, the compressive strength of the ultrahigh performance concrete using the industrial byproduct according to the ninth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as compared with the above-described comparative example.

Embodiment 10

7, the ultrahigh performance concrete utilizing the industrial byproduct according to the tenth embodiment of the present invention includes cement 110, limestone fine powder 220, silica fume 120, bottom ash 230, The cement 110 includes the water 140, the colloidal flocculant 150, the reinforcing fiber 160, the aggregate 170 and the quenching furnace oxidation slag (REOS) 240. In comparison with the above- 24% of the cement 110 is replaced with a limestone fine powder 220 which is an industrial by-product and the whole of the fine silica powder 130 is replaced with a bottom ash 230. Further, 50% of a part of the aggregate 170 is replaced with quench electric furnace oxidation slag (REOS: 240).

Compared with the above-mentioned comparative example, the compressive strength of the ultra high performance concrete using the industrial byproduct according to the tenth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as shown in FIG.

Example 11

As shown in FIG. 7, the ultra-high performance concrete utilizing the industrial byproduct according to the eleventh embodiment of the present invention comprises cement 110, a blast furnace slag fine powder (GGBFS) 210, a silica fume 120, The bottom ash 230, the water 140, the superabsorbent 150, the reinforcing fiber 160, and the quench furnace oxidation slag (REOS) 240. In comparison with the above-described comparative example, A part of the cement 110, for example, 24% of the cement 110 is replaced with a blast furnace slag fine powder 210 which is an industrial by-product and 50% of the fine silica powder 130 is used as a bottom ash 230), and all of the aggregate (170) is replaced with quench-furnace oxidation slag (REOS) (240).

Compared to the above-mentioned comparative example, the compressive strength of the ultra high performance concrete using the industrial byproduct according to the eleventh embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as shown in FIG.

Example 12

As shown in FIG. 7, the ultra-high performance concrete utilizing the industrial byproduct according to the twelfth embodiment of the present invention includes cement 110, GGBFS 210, silica fume 120, The cement 110 includes the cement 110, the water 230, the water 140, the superabsorbent 150, the reinforcing fiber 160, and the quenching furnace oxidation slag REOS 240, For example, 24% of the cement 110 is replaced with a blast furnace slag powder 210 which is an industrial by-product, and all the fine silica powder 130 is replaced with a bottom ash 230, And the entire aggregate 170 is replaced with quench-furnace oxidation slag (REOS) 240.

Compared to the above-described comparative example, the compressive strength of the ultra high performance concrete using the industrial byproduct according to the twelfth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as shown in FIG.

Example 13

7, the ultra-high performance concrete using the industrial byproduct according to the thirteenth embodiment of the present invention includes cement 110, limestone fine powder 220, silica fume 120, fine silica powder 130, The bottom ash 230, the water 140, the superabsorbent 150, the reinforcing fibers 160 and the quenching furnace oxidation slag REOS 240. In comparison with the above-mentioned comparative example, the cement 110 For example, 24% of the cement 110 is replaced with an industrial by-product limestone fine powder 220, and 50% of the silica fine powder 130 is replaced with a bottom ash 230 , And the aggregate 170 is replaced with quench-free furnace oxidation slag (REOS) 240.

Compared with the above-described comparative example, the compressive strength of the ultra high performance concrete using the industrial byproduct according to the thirteenth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as shown in FIG.

Example 14

7, the ultra high-performance concrete utilizing the industrial by-product according to the fourteenth embodiment of the present invention includes cement 110, limestone fine powder 220, silica fume 120, bottom ash 230, (140), a colloidal fluidizer (150), a reinforcing fiber (160), and a quench furnace oxidation slag (REOS: 240). In comparison with the above-mentioned comparative example, 24% of the cement 110 is replaced with limestone fine powder 220 which is an industrial by-product and the whole of the fine silica powder 130 is replaced with a bottom ash 230. Further, (REOS: 240) as a quench-free electric furnace.

Compared with the above-mentioned comparative example, the compression strength of the ultra high performance concrete using the industrial byproduct according to the fourteenth embodiment of the present invention has a predetermined compressive strength of 130 MPa or more as shown in FIG.

As a result, according to the embodiment of the present invention, by using at least one of industrial by-products such as blast furnace slag fine powder (GGBFS), limestone fine powder, bottom ash, quench furnace oxidation slag (REOS) Can be reduced. In addition, by using industrial by-products such as blast furnace slag (GGBFS), limestone fine powder, bottom ash, and quench electric furnace slag (REOS), ultra high performance concrete can be produced environmentally friendly. Also, by using the blast furnace slag fine powder (GGBFS) or the limestone fine powder as the binder for cement substitution, it is possible to increase the fluidity in the production of the ultra high performance concrete composition.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

200: Ultra High Performance Concrete (UHPC)
110: Cement
120: Silica Fume
130: Silica Powder
140: Water
150: Superplasticizer / High performance water reducing agent
160: reinforcing fiber
170: aggregate / sand
210: Blast furnace slag fine powder (GGBFS)
220: Limestone Powder
230: Bottom Ash
240: quenched electric furnace oxidation slag (REOS)

Claims (11)

In an ultra high performance concrete composition utilizing industrial byproducts,
As a binder, 100 parts by weight of cement (110);
A binder mixed with the cement (110), wherein 16 to 30 parts by weight of silica fume (120) based on 100 parts by weight of the cement (110);
12 to 30 parts by weight of fine silica powder (130) based on 100 parts by weight of the cement (110) as a binder to be mixed with the cement (110);
0 to 40 parts by weight of a blast furnace slag powder (GGBFS: 210) based on 100 parts by weight of the cement (110);
Mixing water to be mixed with the binder, wherein 19 to 24 parts by weight of water (140) based on 100 parts by weight of cement (110);
2.4 to 4.8 parts by weight of a superplasticizer (150) mixed with the binder and based on 100 parts by weight of the cement (110);
Steel fibers mixed into the binder include 1.5 to 7.5 parts by weight of reinforcing fibers 160 based on 100 parts by weight of cement 110; And
As the sand mixed with the binder, 90 to 120 parts by weight of aggregate (170) based on 100 parts by weight of cement (110)
By weight based on industrial by-products. In an ultra high performance concrete composition utilizing industrial byproducts,
100 parts by weight of cement (110) as a binder;
A binder mixed with the cement (110), wherein 16 to 30 parts by weight of silica fume (120) based on 100 parts by weight of the cement (110);
12 to 30 parts by weight of fine silica powder (130) based on 100 parts by weight of the cement (110) as a binder to be mixed with the cement (110);
An industrial by-product which is mixed to replace the cement 110 by 0 to 30%, wherein 0 to 30 parts by weight of limestone powder 220 based on 100 parts by weight of the cement 110;
And water (W: 140) of 19 to 24 parts by weight based on 100 parts by weight of the cement (110);
2.4 to 4.8 parts by weight of the superfluidizer (150) mixed with the binder and based on 100 parts by weight of the cement (110);
Steel fibers mixed into the binder include 1.5 to 7.5 parts by weight of reinforcing fibers 160 based on 100 parts by weight of cement 110; And
As the sand mixed with the binder, 90 to 120 parts by weight of aggregate (170) based on 100 parts by weight of cement (110)
By weight based on industrial by-products. 3. The method of claim 2,
Characterized in that the particle size of the limestone fine powder (220) as an industrial by-product is 0.5 to 300 μm. In an ultra high performance concrete composition utilizing industrial byproducts,
100 parts by weight of cement (110) as a binder;
A binder mixed with the cement (110), wherein 16 to 30 parts by weight of silica fume (120) based on 100 parts by weight of the cement (110);
12 to 30 parts by weight of fine silica powder (130) based on 100 parts by weight of the cement (110) as a binder to be mixed with the cement (110);
0 to 40 parts by weight of a blast furnace slag powder (GGBFS: 210) based on 100 parts by weight of the cement (110);
An industrial byproduct to be mixed with 0 to 100% of the silica fine powder 130 to replace the silica fine powder 130, 12 to 30 parts by weight of bottom ash 230 based on 100 parts by weight of the cement 110;
Mixing water to be mixed with the binder, wherein 19 to 24 parts by weight of water (140) based on 100 parts by weight of cement (110);
2.4 to 4.8 parts by weight of the superfluidizer (150) mixed with the binder and based on 100 parts by weight of the cement (110);
Steel fibers mixed into the binder include 1.5 to 7.5 parts by weight of reinforcing fibers 160 based on 100 parts by weight of cement 110; And
As the sand mixed with the binder, 90 to 120 parts by weight of aggregate (170) based on 100 parts by weight of cement (110)
By weight based on industrial by-products. 5. The method of claim 4,
Characterized in that the size of the bottom ash (230) as an industrial by-product is 0.2 to 25 占 퐉. In an ultra high performance concrete composition utilizing industrial byproducts,
100 parts by weight of cement (110) as a binder;
A binder mixed with the cement (110), wherein 16 to 30 parts by weight of silica fume (120) based on 100 parts by weight of the cement (110);
12 to 30 parts by weight of fine silica powder (130) based on 100 parts by weight of the cement (110) as a binder to be mixed with the cement (110);
An industrial by-product which is mixed to replace the cement 110 by 0 to 30%, wherein 0 to 30 parts by weight of limestone powder 220 based on 100 parts by weight of the cement 110;
An industrial byproduct to be mixed with 0 to 100% of the silica fine powder 130 to replace the silica fine powder 130, 12 to 30 parts by weight of bottom ash 230 based on 100 parts by weight of the cement 110;
Mixing water to be mixed with the binder, wherein 19 to 24 parts by weight of water (140) based on 100 parts by weight of cement (110);
2.4 to 4.8 parts by weight of the superfluidizer (150) mixed with the binder and based on 100 parts by weight of the cement (110);
Steel fibers mixed into the binder include 1.5 to 7.5 parts by weight of reinforcing fibers 160 based on 100 parts by weight of cement 110; And
As the sand mixed with the binder, 90 to 120 parts by weight of aggregate (170) based on 100 parts by weight of cement (110)
By weight based on industrial by-products. The method according to claim 6,
Characterized in that the particle size of the limestone fine powder (220) as an industrial by-product is 0.5 to 300 μm and the particle size of the bottom ash (230) is 0.2 to 25 μm. In an ultra high performance concrete composition utilizing industrial byproducts,
100 parts by weight of cement (110) as a binder;
A binder mixed with the cement (110), wherein 16 to 30 parts by weight of silica fume (120) based on 100 parts by weight of the cement (110);
12 to 30 parts by weight of fine silica powder (130) based on 100 parts by weight of the cement (110) as a binder to be mixed with the cement (110);
0 to 40 parts by weight of a blast furnace slag powder (GGBFS: 210) based on 100 parts by weight of the cement (110);
An industrial byproduct to be mixed with 0 to 100% of the silica fine powder 130 to replace the silica fine powder 130, 12 to 30 parts by weight of bottom ash 230 based on 100 parts by weight of the cement 110;
Mixing water to be mixed with the binder, wherein 19 to 24 parts by weight of water (140) based on 100 parts by weight of cement (110);
2.4 to 4.8 parts by weight of the superfluidizer (150) mixed with the binder and based on 100 parts by weight of the cement (110);
Steel fibers mixed into the binder include 1.5 to 7.5 parts by weight of reinforcing fibers 160 based on 100 parts by weight of cement 110;
The sand mixed with the binder includes 90 to 120 parts by weight of aggregate (170) based on 100 parts by weight of cement (110); And
(REOS: 240) of 90-120 parts by weight based on 100 parts by weight of the cement (110), wherein the aggregate (170) is mixed with 0 to 100%
By weight based on industrial by-products. 9. The method of claim 8,
Characterized in that the size of the bottom ash (230) as an industrial by-product is 0.2 to 25 占 퐉. In an ultra high performance concrete composition utilizing industrial byproducts,
100 parts by weight of cement (110) as a binder;
A binder mixed with the cement (110), wherein 16 to 30 parts by weight of silica fume (120) based on 100 parts by weight of the cement (110);
12 to 30 parts by weight of fine silica powder (130) based on 100 parts by weight of the cement (110) as a binder to be mixed with the cement (110);
An industrial by-product which is mixed to replace the cement 110 by 0 to 30%, wherein 0 to 30 parts by weight of limestone powder 220 based on 100 parts by weight of the cement 110;
An industrial byproduct to be mixed with 0 to 100% of the silica fine powder 130 to replace the silica fine powder 130, 12 to 30 parts by weight of bottom ash 230 based on 100 parts by weight of the cement 110;
Mixing water to be mixed with the binder, wherein 19 to 24 parts by weight of water (140) based on 100 parts by weight of cement (110);
2.4 to 4.8 parts by weight of the superfluidizer (150) mixed with the binder and based on 100 parts by weight of the cement (110);
Steel fibers mixed into the binder include 1.5 to 7.5 parts by weight of reinforcing fibers 160 based on 100 parts by weight of cement 110;
The sand mixed with the binder includes 90 to 120 parts by weight of aggregate (170) based on 100 parts by weight of cement (110); And
(REOS: 240) of 90-120 parts by weight based on 100 parts by weight of the cement (110), wherein the aggregate (170) is mixed with 0 to 100%
By weight based on industrial by-products. 11. The method of claim 10,
Characterized in that the particle size of the limestone fine powder (220) as an industrial by-product is 0.5 to 300 μm and the particle size of the bottom ash (230) is 0.2 to 25 μm.

Images