KR20130049497A - Method of analyzing co2 balance of concrete structure - Google Patents
Method of analyzing co2 balance of concrete structure Download PDFInfo
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- KR20130049497A KR20130049497A KR1020110114573A KR20110114573A KR20130049497A KR 20130049497 A KR20130049497 A KR 20130049497A KR 1020110114573 A KR1020110114573 A KR 1020110114573A KR 20110114573 A KR20110114573 A KR 20110114573A KR 20130049497 A KR20130049497 A KR 20130049497A
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- G—PHYSICS
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- G16C20/00—Chemoinformatics, i.e. ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures
- G16C20/70—Machine learning, data mining or chemometrics
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C20/00—Chemoinformatics, i.e. ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures
- G16C20/90—Programming languages; Computing architectures; Database systems; Data warehousing
Abstract
Description
The present invention compared to calculate, in particular the amount of CO 2 to the CO 2 amount and used, the number of concrete during generated during the production of material resorption constituting the concrete to a method for CO 2 Resin Analysis of the concrete structure, analysis And simulation methods, which can be simulated by identifying the type of structure, materials used, concrete usage, concrete mix ratio, and finish status of structures, and considering various variables such as selecting various carbonation prediction equations. The present invention relates to a method for evaluating and analyzing CO 2 resin in concrete structures that can be used as cement rule binders to simulate results.
The Fourth Assessment Report of the United Nations Intergovernmental Climate Change Council (IPCC) recently pointed out that global warming is evident and that the cause is very likely to be the increase in greenhouse gas concentrations caused by human activities. At present, efforts are being made to reduce CO2, a greenhouse gas, in all industrial sectors.
However, the concrete used in most of today's structures is aggregate material and building material using cement as a binder. As cement is produced, a large amount of CO 2 is generated during decarbonation of limestone, which is the main raw material. There is a growing awareness of environmentally friendly building materials. Korea also CO 2 emissions in the construction industry, which accounts for about 40% of total CO 2 emissions as the CO 2 reduction obligations countries in 2012, has become indispensable.
However, concrete undergoes a carbonation process in which some of the decarbonized CO 2 is reabsorbed from the atmosphere during use. In addition, the amount of CO 2 absorbed through the carbonation of concrete increases as the concentration of CO 2 in the atmosphere increases.
The results of researches that quantitatively evaluate CO 2 absorption ability through the carbonation of concrete have been recently published in North America and Nordic countries. However, there is no formal method for estimating CO 2 absorption through carbonation, and in
here,
: Molecular weight of component i, C: amount of cement in concrete ), CaO: CaO content (%) in cement clinker.Therefore, it is important to quantitatively understand the CO 2 emissions of concrete prior to CO 2 reduction, and it is very important to quantitatively evaluate the amount of absorption because concrete absorbs CO 2 while carbonizing.
The present invention is to solve the above problems, to calculate the CO 2 emissions of the concrete through the amount of CO 2 generation and the amount of concrete use of the concrete used material and concrete CO according to the amount of use of concrete, compounding, carbonation prediction, finishes, years of use of concrete structures CO to evaluate the two removals second resin (emissions - removals) carried out analyzes evaluation and CO 2 resin assessment of concrete structures to provide basic data to determine the total CO 2 emissions and removals in the construction industry and quantitatively And an analysis method.
Characteristic of the CO 2 resin evaluation and analysis method of the concrete structure according to the present invention for achieving the above object is (A) the structure basic information, evaluation conditions, formulation through the structure overview and evaluation information input window displayed on the terminal from the evaluator And inputting conditions necessary for evaluating the CO 2 resin including the quantity; (B) calculating total CO 2 emissions through the evaluation conditions of the structure to be evaluated; and (C) evaluation conditions of the structure to be evaluated. Computing the total amount of CO 2 absorption through the (D) Evaluate the CO 2 resin of the structure calculated on the basis of the evaluation conditions of the structure to be evaluated and the CO 2 resin of the structure according to the number of years, carbonation prediction formula and finish It includes the step of analyzing.
Preferably the information of the structure is simply a structure overview including at least one or more of the structure name, location, evaluator, scale, evaluation date and time, the type of structure, the number of years, carbonation prediction formula for evaluating the CO 2 resin of the structure, Characterized in that the evaluation information of the structure including the conditions of at least one target structure of the finish material type.
Preferably, the type of structure includes at least one of a building structure, a civil structure, and the use years include at least one of 40, 60, and 80 years, and the carbonization depth prediction formula is Koh, Kishitani, JSCE. Including one or more of the formula, the finish type is characterized in that it comprises at least one of uncoated, bone tile, remittal, cross-sectional restoration, surface wood, water-based paint, water repellent.
Preferably the surface area of the structure is characterized by calculating by applying the ratio of the surface area to the concrete usage.
Preferably, the ratio of the surface area to the amount of concrete used is a value that estimates the surface area through the amount of concrete.
Preferably, the calculation of the total amount of CO 2 emissions is calculated by multiplying the amount of CO 2 emissions of the material used in concrete by the amount used according to the concrete mix and calculating the amount of CO 2 emissions per cubic meter of concrete, and then multiplying the concrete usage to obtain the total CO 2 emissions of the structure. Comprising the step of calculating the.
Preferably, the total amount of CO 2 absorbed is determined by the number of moles of compounds that can react with CO 2 in concrete, the surface area of the structure estimated by the amount of concrete used, and the carbonation depth calculated by the carbonation prediction equation according to the number of years of use. carbonation decreased coefficient of finishing materials in accordance, it characterized in that it comprises the step of calculating the total amount of water absorption of CO 2 by the product of the molecular structure of the 44 CO 2.
Preferably the reactant is
Characterized in that it comprises any one.Preferably, the carbonation depth reduction coefficient is a numerical value calculated by measuring a reduction in the carbonation depth of the structure applied for each finish based on the carbonation depth of the uncoated structure.
As described above, the method for analyzing CO 2 resin of a concrete structure according to the present invention has the following effects.
First, it is possible to simulate the type of structure, the amount of concrete used, the ratio of concrete mixture, and to simulate the results as closely as possible by considering various variables such as various finishes and carbonation prediction equations.
Second, it is possible to calculate the total CO 2 emissions and absorption of the construction industry based on the simulation results through the CO 2 balance analysis method according to the present invention and to quantitatively calculate the emission and absorption of CO 2 through national unit simulation. .
Third, the present invention has the effect of increasing the reliability and accuracy by evaluating the amount of CO 2 absorption of the structure to which three kinds of carbonation prediction equations, such as Kishitani, JSCE, Koh for CO 2 resin analysis.
1 is a flow chart for explaining a method for analyzing CO 2 resin of a concrete structure according to an embodiment of the present invention
2 is a diagram illustrating a structure information input window for inputting basic information of a structure according to an exemplary embodiment of the present invention.
3 is a graph for calculating the surface area of a structure compared to the amount of concrete used in comparison with the amount of concrete used in the structure according to an embodiment of the present invention
4 is a diagram illustrating a structure information input window for inputting evaluation conditions of a structure according to an exemplary embodiment of the present invention.
5 is a graph showing the results of the total CO 2 emissions of the structure to be evaluated calculated according to the embodiment of the present invention.
6 is a graph showing the results of the total amount of CO 2 absorption of the structure to be evaluated calculated according to the embodiment of the present invention.
7 is a diagram and graph showing the results of evaluating CO 2 resin of structures analyzed in accordance with an embodiment of the present invention.
Other objects, features and advantages of the present invention will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.
Referring to the accompanying drawings, a preferred embodiment of the method for analyzing CO 2 resin of a concrete structure according to the present invention will be described. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, only the embodiments to complete the disclosure of the present invention and complete the scope of the invention to those skilled in the art. It is provided to inform you. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.
1 is a flowchart illustrating a method for analyzing CO 2 resin of a concrete structure according to an embodiment of the present invention.
Referring to Figure 1, first to set the structure to be evaluated (S100), and receives the evaluation information, such as concrete consumption, formulation and quantity of the structure input information through the structure information input window displayed on the terminal from the evaluator ( S110). In this case, the amount of the compound used and the amount of the structure is applied when calculating the CO 2 emissions of the concrete, it is also applied when calculating the molar concentration of the compound that can calculate the surface area or react with the CO 2 in the concrete.
As shown in FIGS. 2 and 4, the structure information input window for inputting the structure information may be divided into a portion for inputting 'structure summary' and 'evaluation information of the structure'. In this case, the structure summary simply includes the name, location, evaluator, scale, evaluation date and time of the structure, and the evaluation information of the structure is the condition of the target structure (structure type, years of use, carbonation) for evaluating the CO 2 balance of the structure Predictions, finish types, etc.).
The type of structure among the conditions of the target structure was largely divided into a building structure and a civil structure. Because building structures are internal and external, carbonation reactions that absorb CO 2 occur inside and outside, and internal and external finishes are different. Civil structures have no exteriors, and carbonation reactions that absorb CO 2 occur only outside and finishes are rarely used. However, when used, they should be divided into building structures and civil structures due to differences that apply only to the outside. And the number of years of use among the conditions of the target structure was to be selected by the evaluator representative of the most used 40, 60, 80 years. This assumes that the structure has existed for the selected number of years of use when calculating CO 2 absorption, and estimates the carbonation depth and is used as one of the carbonation depth estimation parameters.
Among the conditions of the target structure, the carbonation prediction formula is necessary for estimating the amount of CO 2 absorbed in concrete. Since the formulas for predicting carbonation depth vary slightly among researchers, the Koh equation of Korea, the Kishitani equation of Japan, and the Japanese Society of Civil Engineers (JSCE) ) Was selected by the evaluator. Since the carbonation prediction equation is slightly different for each researcher, the evaluator selects a carbonation prediction equation to be evaluated, and the carbonation prediction equation is used to calculate the carbonation depth of the concrete structure. In the past, Koh's formula was adopted for evaluating domestic structures. This method has lower reliability and lower accuracy than when considering the formulas of various researchers. However, in the case of the present invention, to compensate for this, it is possible to apply three types of carbonation prediction equations such as Kishitani, JSCE, Koh. Accordingly, the present invention can evaluate the amount of CO 2 absorption of the structure to which various carbonation prediction equations are applied.
In addition, in the condition of the target structure, the finishing material is divided into internal and external in the case of the building structure, in the case of the civil structure to select only the exterior material. In the case of finishing materials, the reduction factor of carbonation was applied according to the finishing materials.
FYI, CO 2 emissions of the material of the data used to program my basic Japanese Cement Association and the Japan Society of Civil Engineers data, the carbonation reducing coefficient and compared to surface non-concrete usage of finishes experiment in building materials and construction of laboratory sustainable, Hanyang University The experimental values and the results of the research were basically used. In addition, the evaluator can directly input data using data provided by the Korea Cement Association or the data from the national LCA database operated by the Ministry of Environment.
When calculating the surface area of the structure, it is calculated by applying the surface area-to-concrete ratio to solve the inconvenience of having to take a long time and counting many parts. This is calculated based on this figure by investigating how much surface area is calculated when concrete 1㎥ is used by checking concrete usage and surface area by type of structure. That is, the ratio is calculated by calculating the concrete usage and the surface area to the usage of a specific structure, and the surface area is proportional to the surface area without the inconvenience and hassle that has to be calculated for a long time when evaluating the CO 2 absorption of the structure using the calculated concrete usage surface area ratio. It was known as. This can also be entered directly if the evaluator wants to directly calculate the surface area of the structure or apply other data.
Subsequently, the amount of CO 2 emitted and the amount of CO 2 absorbed are evaluated by using the amount of the compound and the amount of the structure calculated as described above (S120).
First, CO 2 emissions of the structure multiplied by the amount of concrete and then look at the assessment of the CO 2 emission by multiplying the amount of data that has been used in accordance with the CO 2 emission intensity and the concrete mixture of the materials used in the concrete obtained with CO 2 emissions per
In a preferred embodiment, CO 2 emissions by the material is used to calculate the CO 2 emissions of the structure within the program uses the data of JSCE. If the evaluator wants to apply different data, they can directly enter it.
CO 2 emissions of the concrete component materials are shown in Table 2 below.
Slag
Ash
Water reducing agent
The CO 2 emission unit (S130) of each of the constituent materials of the concrete is multiplied by the amount of use of the constituent materials (S140) when the concrete is mixed to calculate the CO 2 emissions of the concrete 1㎥ (S150).
In addition, the total amount of CO 2 of the structure is calculated by multiplying the amount of concrete (K), the amount of material (W) for each material, and the amount of CO 2 of 1
The result of the total CO 2 emissions of the structure to be evaluated calculated in this way is shown graphically in FIG. 5. Meanwhile, in FIG. 5, in which the total amount of CO 2 emissions is shown, the amount of CO 2 generated is displayed for each material used for concrete mixing, or the percentage of total CO 2 emissions is also displayed. Accordingly, CO 2 it can be seen the emissions results, as well as it is possible to know the percentage of CO 2 emission and the total CO 2 emissions for each material used in the concrete mix.
Next, the method of evaluating CO 2 emissions shows the number of moles of compounds that can react with CO 2 in concrete, the carbonation depth, and the finishing material calculated through the carbonation prediction equation according to the surface area of the structure and the years of use. calculates the total structure CO 2 absorption amount of carbonation through reduction factor, the product of molecular weight of 44 CO 2 in the finish of the use.
At this time, the number of moles of the compound that can react with the CO 2 in the concrete reactants through the carbonation reaction of the concrete according to the following equations (2) to (5) Calculate the molarity of (S170). For reference, it is assumed equal the molar concentration of the molar concentration of CO 2 is absorbed, which react with the absorbed CO 2 in the reaction of concrete material.
Next, as shown in Table 1, the carbonation reduction coefficient for each finish used in the structure is applied when calculating the carbonation depth of the concrete (S180). At this time, the finishing material includes a non-coating, bone tile, remittal, cross-sectional restoration, surface wood, water-based paint, water repellent. For reference, when the finishing material is used, the carbonation reaction is slowed down and the carbonation depth is reduced compared to the non-coating.
For reference, concrete test specimens were made on one side and coated with six other finishes (bone tile, remittal, cross-sectional restoration, surface coating, water-based paint, water-repellent), and carbonation experiments were conducted. Measured. In addition, the carbonization depths were investigated when six finishes were used based on the carbonation depth of the uncoated structure. After that, the carbonation depth of the uncoated structure was set to 1, and when the finishing material was used, the reduction in the carbonation depth of the structure was measured and expressed as a numerical value, which is called the carbonization depth reduction coefficient of the finishing material. As a result, the reduction rate of carbonation depth when the finish was used based on the carbonation depth of the uncoated concrete is shown in Table 1 based on the
Carbonation depth reduction coefficient according to the finish is shown in Table 1 below.
Restoration
Coating
Paint
As such, in the present specification, as well as considering the effect of the finishing material, in the case of the building structure, it is possible to select the finishing material inside and outside, and considered the finishing material effect both inside and outside.
On the other hand, when calculating the amount of CO 2 absorption of the structure, it is necessary to know what the surface area of the structure. However, for example, when evaluating a 30-storey multi-unit housing complex, calculating surface area can be very time-consuming and inconvenient. When calculating the surface area, all the drawings from the basement to the ground floor and from the sectional view to the elevation are required and should be carried. Also, the surface area should be calculated by dividing each part and the area of all openings should be calculated and excluded. This is complicated and time-consuming inconvenience when calculating the surface area of the structure through a number of complicated drawings.
Therefore, in order to improve such inconvenience and inefficient evaluation method, the method using the surface area of the structure through the concrete usage of the structure to be evaluated is used. This is applied by calculating the surface area-to-concrete ratio by using the surface area of the structure as the concrete usage changes while evaluating the CO 2 resin of the various structures.
3 is a graph of calculating the surface area of a structure by using the surface area ratio of the amount of use of the structure, which is a specific standard, and comparing the amount of concrete used in the structure to calculate the surface area of the structure compared to the amount of unit concrete. It is a method based on this figure by calculating how much surface area is calculated by using concrete 1㎥ by investigating concrete usage and surface area by calculating the existing standard structure by structure type.
Of course, the types of structures, that is, architectural structures and civil structures are different in shape, and in the case of architectural structures, the ratio is calculated for each type because more surface areas are calculated than the civil structures due to the existence of internal space. Table 3 shows the numerical values of the structure surface area thus calculated.
As shown in Table 3, when 1m3 of concrete is used for building structures, the internal surface area is 4.88㎡, and the external surface area is 0.80㎡, and for civil structures, there is no internal or external distinction (only external surfaces exist. The surface area is 2.27
As such, while evaluating the CO 2 resin of the different structures, using the change in the surface area of the structure as the amount of concrete changes, the ratio of the surface area to the amount of concrete usage is calculated, and the surface area of the structure is calculated based on this (S190).
And it calculates the total CO 2 absorption amount of the structure multiplied by the molecular weight of the surface area and the CO 2 of the carbonation depth, the structure of the estimated molar concentration concrete (S200).
The results of the total CO 2 absorption of the structure to be evaluated calculated in this way are shown graphically in FIG. As illustrated in FIG. 6, when the number of years of use is different, the results of applying various carbonation prediction equations can be seen and can be confirmed by a chart. And when using each finishing material can be confirmed by expressing the results of the evaluation of the CO 2 absorption. The CO 2 Accordingly, it can be seen on the total absorption of CO 2, as well as according to the number of years used with the carbonation Prediction The absorption amount result can be seen. You can also see the amount of CO 2 absorbed by finish.
As such, based on the amount of concrete used and the amount of absorption calculated based on the amount of absorption of the CO 2 emissions of the structure, the CO 2 resin of the structure according to the years of use, carbonation prediction formula and finishing materials is analyzed (S210). Figure 7 shows the results of the CO 2 resin evaluation of the analyzed structure in a chart and a graph.
Although the technical spirit of the present invention described above has been described in detail in a preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.
Claims (10)
(B) calculating the total CO 2 emissions through the evaluation conditions of the structure to be evaluated,
(C) calculating the total CO 2 absorption through the evaluation conditions of the structure to be evaluated,
(D) a concrete structure comprising the step of evaluating the CO 2 resin of the structure calculated on the basis of the evaluation conditions of the structure to be evaluated and analyzing the CO 2 resin of the structure according to the years, carbonation prediction formula and finish CO 2 resin evaluation and analysis method.
A summary of the structure comprising at least one of a name, location, evaluator, scale, and date and time of the structure,
Evaluation of the CO 2 resin of the concrete structure comprising the evaluation information of the structure including the conditions of the target structure of at least one of the type of structure, the number of years of use, the carbonation prediction formula, the finish material type for evaluating the CO 2 resin of the structure And analytical method.
The type of the structure includes one or more of building structures, civil structures,
The years of use include one or more of 40, 60, 80 years,
The carbonation prediction formula includes one or more of Koh, Kishitani, JSCE,
The finish material type CO 2 resin evaluation and analysis method of a concrete structure, characterized in that it comprises at least one of uncoated, bone tile, remittal, cross-sectional restoration, surface wood, water-based paint, water repellent.
The surface area of the structure is calculated based on the structure overview information, and the amount of concrete used and the amount of concrete used in the structure are calculated based on the calculated surface area of the structure and the evaluation information of the structure input through the structure information input window. CO 2 resin evaluation and analysis method of concrete structure.
Method for evaluating and analyzing the CO 2 resin of the concrete structure, characterized in that the surface area of the structure is calculated by applying the ratio of the surface area to the concrete usage.
The ratio of the surface area to the amount of use is calculated on the basis of the surface area value when using 1 ㎥ of concrete, based on the amount of concrete used and the concrete surface area of each type of structure CO 2 resin evaluation and analysis method.
Estimating the CO 2 emissions of each of the constituent materials of the structure calculated using the carbonation prediction equation,
Calculating the amount of concrete in the calculated structure and calculating the amount of material for each material per 1㎥ according to the mixing;
Calculating CO 2 emissions of 1 m 3 of concrete by multiplying the calculated CO 2 emission unit of each of the constituent materials of the concrete by the amount of constituent materials used in concrete mixing;
The calculated amount of concrete, CO 2 resin evaluation and analysis method of the concrete structure, characterized in that it comprises the step of multiplying each of the material-specific amount of material and the CO 2 emission of the concrete 1㎥ calculate CO 2 emissions of the structure.
Estimating the amount of CO 2 absorption of each of the constituent materials of the structure calculated using the carbonation prediction equation,
Calculating the molarity of the reactants reacting with the CO 2 in the concrete through the carbonation reaction of the concrete for each component of the structure;
Calculating the carbonation depth of the concrete based on a predetermined carbonization depth reduction factor for each finish applied to the structure;
Calculating the surface area ratio of the concrete usage, and calculating the surface area of the structure based on the
CO 2 resin evaluation and analysis method of the concrete structure, characterized in that it comprises the step of multiplying the molecular weight of the surface area and the CO 2 of the carbonation depth, the structure of the estimated molar concentration concrete estimate the CO 2 absorption amount of the total structure.
The reactant is CO 2 resin evaluation and analysis method of a concrete structure, characterized in that it comprises any one of.
The carbonation depth reduction coefficient is a CO 2 resin evaluation and analysis method of the concrete structure, characterized in that calculated by measuring the reduction in the carbonation depth of the structure applied for each finish based on the carbonation depth of the uncoated structure.
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CN105205466A (en) * | 2015-09-21 | 2015-12-30 | 广州地理研究所 | Energy carbon emission remote sensing estimation method based on night light images |
CN106366252A (en) * | 2016-08-31 | 2017-02-01 | 李健 | Antistatic carbon dioxide resin material and preparation method thereof |
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KR101897551B1 (en) | 2017-02-01 | 2018-09-12 | 강원대학교 산학협력단 | Method for computing carbonation of high volume slag concrete, and recording medium thereof |
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CN105205466A (en) * | 2015-09-21 | 2015-12-30 | 广州地理研究所 | Energy carbon emission remote sensing estimation method based on night light images |
CN105205466B (en) * | 2015-09-21 | 2018-06-15 | 广州地理研究所 | A kind of energy carbon emission amount remote sensing estimation method based on night lights image |
CN106366252A (en) * | 2016-08-31 | 2017-02-01 | 李健 | Antistatic carbon dioxide resin material and preparation method thereof |
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