CN113345537A - Method for automatically producing concrete proportion - Google Patents
Method for automatically producing concrete proportion Download PDFInfo
- Publication number
- CN113345537A CN113345537A CN202110659476.6A CN202110659476A CN113345537A CN 113345537 A CN113345537 A CN 113345537A CN 202110659476 A CN202110659476 A CN 202110659476A CN 113345537 A CN113345537 A CN 113345537A
- Authority
- CN
- China
- Prior art keywords
- concrete
- sand
- coarse
- amount
- proportion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C60/00—Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
Landscapes
- Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Bioinformatics & Computational Biology (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention relates to the technical field of building materials, in particular to a method for automatically producing concrete proportion, which comprises the following steps: inputting sand and stone material sieve analysis data into an automatic concrete production proportioning system; the automatic concrete proportioning system distributes the proportion of coarse sand and fine sand according to the condition of the sand, adjusts the fineness modulus, inputs the proportion of large stones and small stones and determines the gradation of the stones according to the parameter database; and (4) inputting the final stone volume arbitrarily, and automatically generating a concrete proportioning system to deduce whether the volume of the current dry mortar meets the condition according to the standard coarse product coefficient, the sand coarse product variation and the stone coarse product variation, namely that the volume of the current dry mortar is more than or equal to the deduced dry mortar volume. All production ratios have good workability, the compression-resistant quality of concrete has a stable level, the ratios are managed informationally, human errors are reduced, the quality management of the concrete is improved, and the concrete product has a stable quality level through the activated ratio management system.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a method for automatically producing concrete proportion and a method thereof.
Background
The conventional concrete proportioning design is constructed by hidden properties such as sand-gravel ratio (S/a), gelation ratio (W/B), mineral powder ratio (S%), fly ash ratio (F%), admixture ratio (Ad%), and the like, and the proportioning of the construction has two defects essentially:
(1) no connection between the aggregate and the cement paste: the thick bone and the thin bone are defined by S/A, and the cement, the spaghetti, the fly ash, the water and the admixture are defined by the hidden properties of W/B, S%, F%, Ad% and the like; the inverse aggregate and the cement paste have no hidden property to establish the due relationship.
(2) The hidden property of the mixture ratio belongs to artificial empirical values or empirical formulas, and is based on the lack of systematic test data base.
Disclosure of Invention
The present invention aims to provide a method for automatically producing concrete proportioning and a method thereof, so as to solve the problem of inaccurate proportioning of traditional concrete in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for automatically producing concrete proportion specifically comprises the following steps:
s1: inputting sand and stone material sieve analysis data into an automatic concrete production proportioning system;
s2: the automatic concrete proportioning system distributes the proportion of coarse sand and fine sand according to the condition of the sand, adjusts the fineness modulus, inputs the proportion of large stones and small stones and determines the gradation of the stones according to the parameter database;
s3: and (4) inputting the final stone volume arbitrarily, and automatically generating a concrete proportioning system to deduce whether the volume of the current dry mortar meets the condition according to the standard coarse product coefficient, the sand coarse product variation and the stone coarse product variation, namely that the volume of the current dry mortar is more than or equal to the deduced dry mortar volume.
Preferably, the automatically produced concrete proportioning system comprises a parameter database, a saturated surface dry proportioning operation module and an actual proportioning operation module.
Preferably, the parameter database is configured to store a drug optimum usage parameter set, a standard blending parameter set, a raw material basic property parameter set, a material property parameter set, a strength parameter set, and a required slump.
Preferably, the parametric database includes characterization attribute data and masking attribute data.
Preferably, the characterization attribute data includes water absorption, wet weight, mud content, dry weight, saturated surface dry SSD specific gravity, fineness FM value, health, wear rate, specific gravity of various cements, activity, admixture specific gravity and gas content of the aggregate.
Preferably, the hiding attribute data comprise surface water rate, coarse and fine stone distribution rate, coarse and fine sand distribution rate, fine aggregate comprehensive FM value, sand rate S/A, gelation ratio, water consumption, additive utilization rate, fakulan material utilization rate and material filling evaluation coefficient of the aggregate.
Preferably, the material filling evaluation coefficient comprises a coarse product coefficient CF, a fine product coefficient FB and a powder coarse system CB, wherein the coarse product coefficient CF is the ratio of filling coarse aggregate voids with fine aggregates; the fine volume factor FB is the ratio of the fine aggregate voids filled with the cementitious material; the coarse powder system CB is a ratio of the voids of the coarse aggregate to be filled with the cement.
Preferably, the saturated dry noodle ratio calculation module is configured to calculate the saturated dry noodle ratio according to a medicament optimal usage parameter set, a standard ratio parameter set, a raw material basic property parameter set, a material property parameter set, a strength parameter set, and a required slump.
Preferably, the saturated surface dry proportion comprises cement amount, mineral powder amount, powder medium amount, saturated surface dry sand amount, saturated surface dry coarse aggregate amount and saturated surface dry clean water amount.
Preferably, the actual proportioning computation module is used for computing the actual proportioning according to the saturated surface dry sand amount, the saturated surface dry coarse aggregate amount, the saturated surface dry clean water amount and the basic physical property parameters of the raw materials, wherein the actual proportioning comprises the cement amount, the mineral powder amount, the powder ash amount, the actual sand amount, the actual coarse aggregate amount and the actual clean water amount.
Compared with the prior art, the invention has the beneficial effects that:
1. the method for automatically producing the concrete proportion has the advantages of informationized management of the proportion and reduction of human errors. The changes of materials, construction and environment of concrete production faces can be corrected correctly and in real time through the modification of the characteristic attribute or hidden attribute parameter of an informatization system, the traditional ratio management needs to manually process the corresponding ratio, the total correction of all production ratios cannot be completed in a short time, the correctness is risky, and the quality management of the concrete is improved. The quality information from a laboratory and complaints of customers is used in combination with a quality management system to improve the quality of the product; through the activated proportioning management system, the concrete product has stable quality level.
2. The method for automatically producing the concrete proportion has good workability of all production proportions and stable compression-resistant quality of the concrete. APMS designs the proportion by using aggregate continuous gradation and compact filling genes, and fresh concrete has good combination easiness; the concrete is maintained to be in good conformity, the water consumption and the total gel amount are adjusted to ensure that the mixture ratio has a certain gel ratio, and the concrete can keep certain compression strength quality.
3. According to the method for automatically producing the concrete proportioning, hidden attribute parameters (CF, CB and FB) filled among materials are added, but complete mathematical definition is provided among the proportioning materials, and the quantitative values of the relevant hidden attributes can be obtained only through experiments, so that the accuracy of proportioning characteristics is improved.
4. The method for automatically producing the concrete proportion reduces the production unit cost of the concrete, and all materials are compactly combined, so that the gel material is the most economic consumption, and the unit cost of the concrete can be relatively reduced; the cost of quality management failure is reduced, the proportion is calculated by a system program, and the proportion is combined by four factors of slump, strength, cementing material configuration, thickness and the like; the use of the ratio is more flexible, the errors of calculation and use of the ratio can be reduced, and the loss of internal and external quality cost is reduced.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a structural diagram of a hidden attribute matching structure of the matching construction of the present invention;
FIG. 3 is a schematic view of a concrete production process for the proportioning management of the present invention;
FIG. 4 is a line drawing of concrete production data for the mix management of the present invention;
FIG. 5 is a schematic diagram of a conventional concrete production process with proportioning management;
FIG. 6 is a line graph of concrete production data for conventional mix management;
FIG. 7 is a schematic diagram of a concrete mixing ratio.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the following technical scheme:
example 1
A method for automatically producing concrete mix ratio, as shown in fig. 1 and 2, specifically comprising the following steps:
s1: inputting sand and stone material sieve analysis data into an automatic concrete production proportioning system;
s2: the automatic concrete proportioning system distributes the proportion of coarse sand and fine sand according to the condition of the sand, adjusts the fineness modulus, inputs the proportion of large stones and small stones and determines the gradation of the stones according to the parameter database;
s3: and (4) inputting the final stone volume arbitrarily, and automatically generating a concrete proportioning system to deduce whether the volume of the current dry mortar meets the condition according to the standard coarse product coefficient, the sand coarse product variation and the stone coarse product variation, namely that the volume of the current dry mortar is more than or equal to the deduced dry mortar volume.
The parameter database is used for storing a medicament optimal use rate parameter group, a standard proportioning parameter group, a raw material basic property parameter group, a material property parameter group, a strength parameter group and required slump.
It is worth mentioning that the parameter database comprises characteristic attribute data and hiding attribute data, wherein the characteristic attribute data comprise water absorption rate, wet weight, mud content, dry weight, dry SSD specific gravity of saturated surface, fineness FM value, health, wear rate, specific gravity of various cementing materials, activity, admixture specific gravity and gas content of aggregate. The hidden attribute data comprise surface water rate, coarse and fine stone distribution rate, coarse and fine sand distribution rate, fine aggregate comprehensive FM value, sand rate S/A, gelation ratio, water consumption, additive utilization rate, Bukulan material utilization rate and material filling evaluation coefficient of the aggregate. The characteristic attribute data is characterized in that when concrete proportioning design is carried out, the characteristic values of each composition are required to be known in advance, and the characteristic values are obviously available; the hidden attribute data is a characteristic formed by compounding more than two components together when the concrete proportion is designed, and the characteristic value is hidden and can be obtained only by calculation and is an important parameter for constructing the concrete characteristic.
Specifically, the automatic concrete production proportioning system comprises a parameter database, a saturated surface dry proportioning operation module and an actual proportioning operation module. The material filling evaluation coefficient comprises a coarse product coefficient CF, a fine product coefficient FB and a powder coarse system CB, wherein the coarse product coefficient CF is the ratio of coarse aggregate voids filled with fine aggregates; the fine volume factor FB is the ratio of the fine aggregate voids filled with the cementitious material; the coarse powder system CB is a ratio of the voids of the coarse aggregate to be filled with the cement.
In addition, the standard rough product coefficient is determined by adopting a standard group method, the whole volume is calculated, and the rule that the actual ratio determined rough product coefficient changes along with the volume of the false glue under the condition of certain continuous gradation of the stone is drawn.
Standard coarse product coefficient formula: y is 2.5782X-1.055Wherein Y is a standard coarse product coefficient, and X is a false glue volume;
standard group significance: the rough product coefficient estimation needs the real product rate and the specific surface area of the stone, the real product rate of the stone is closely related to the continuous grading composition of the stone, the real product rates of different continuous grading compositions can be obtained by experiments, and different continuous grading compositions have other specific surface areas, and the true value of the specific surface area is unfortunately difficult to obtain. Therefore, a proportioning test is needed, and a proportioning record in a good state is made. Then, the bone is approximately seen as a circle similar to the FLC curve test sample by using a hypothetical model method, and the hypothetical specific surface area of the stone is calculated according to the continuous grade of the stone by taking the screen number as the diameter so as to express the thickness degree of the stone. The standard coarse product coefficient and the relation between the specific surface area coefficient and the real product rate can be finally determined.
The formula of the stone volume fraction: y ═ 0.0002X2+0.0079X +0.5126, wherein Y is the true volume fraction and X is the assumed specific surface area of the stone;
stone consolidation rate: the stone volume accounts for the proportion of the fixed space volume.
Variation of coarse sand volume: the rough product coefficient changes regularly along with the change of the sand fineness modulus.
Sand coarse product variation formula: 0.7191X-1.2174, wherein Y: coarse product variance, X: modulus of fineness of sand
And (3) stone volume variation: the rough product coefficient changes with the change of the stone continuous gradation.
The variation formula of stone volume: y ═ 0.0096X +0.7882, where Y: coarse product variance, X: assumed specific surface area of stone
Fine product coefficient (false glue volume/sand void volume)
The sand solid volume rate formula: y is-0.0255X2+0.1605X +0.4632, wherein Y: sand consolidation rate, X: modulus of fineness of sand
It is noted that true glue refers to common cementing materials such as cement, mineral powder, coal ash and the like; the artificial glue is a general name of other materials with the particle size smaller than 0.075mm in real glue and concrete; the clean slurry is composed of water and pseudoglue.
Concrete has three types of fill: class 1 filling: filling gaps of the false glue with water to form clean slurry; class 2 filling: filling gaps of the fine aggregates with the artificial cement material to form dry mortar; class 3 filling: and filling the coarse aggregate gaps with the dry mortar to form concrete.
According to three types of concrete filling, the design proportion starts from four coefficients:
(1) and calculating the designed strength of the concrete according to the water-cement ratio theorem, namely the water-cement ratio and the true-cement ratio.
(2) Fine volume factor-reveals the filling of voids in the fine aggregate by the pseudogel.
(3) Coarse volume factor-reveals the filling and packing of the dry mortar into the voids of the coarse aggregate.
(3) The net slurry volume-the net slurry volume of the pumped concrete should be above 320L. The self-discharging concrete can be lower than 320L.
The current concrete material is very complex, and according to the screen size, the sand contains powder with the size of less than 0.075 and even contains powder with the size of 9.5, and the stone also contains sand with the size of less than 4.75 and powder with the size of 0.075. These components must be distinguished by screen size, correctly classified for calculation, and plotted for the FLC. The diameter of the stone material is not less than 4.75, and the stone material is coarse. The grain diameter of 0.075-4.75 in the sand is fine aggregate, the fine aggregate comprises the grain diameter of 4.75 sieve in the sand, the fine aggregate is not classified into coarse aggregate, and the grain diameter of 9.5 sieve is classified as coarse aggregate; no. 0.075 particle size below is classified as pseudoglue regardless of sand.
In addition, the automatic concrete production proportioning system comprises a parameter database, a saturated surface dry proportioning operation module and an actual proportioning operation module. The saturated surface dry proportion operation module is used for operating the saturated surface dry proportion according to the optimal medicament utilization rate parameter group, the standard proportion parameter group, the raw material basic property parameter group, the material property parameter group, the strength parameter group and the required slump, and the actual proportion comprises the cement amount, the mineral powder amount, the powder medium amount, the saturated surface dry sand amount, the saturated surface dry coarse aggregate amount and the saturated surface dry clean water amount.
The method for automatically producing the concrete proportion of the invention has the advantages of informationized management of the proportion and reduction of human errors. The changes of materials, construction and environment of concrete production faces can be corrected correctly and in real time through the modification of the characteristic attribute or hidden attribute parameter of an informatization system, the traditional ratio management needs to manually process the corresponding ratio, the total correction of all production ratios cannot be completed in a short time, the correctness is risky, and the quality management of the concrete is improved. And the quality information from a laboratory and complaints of customers is used in combination with a quality management system to improve the quality of the product.
Compared with the concrete production situation of the conventional proportioning management shown in fig. 5 and 6, the concrete production situation of the proportioning management of the invention shown in fig. 3 and 4 allows the concrete product to have stable quality level through the activated proportioning management system. All the production ratios have good workability, and the compression-resistant quality of the concrete has a stable level. APMS designs the proportion by using aggregate continuous gradation and compact filling genes, and fresh concrete has good combination easiness; the concrete is maintained to be in good conformity, the water consumption and the total gel amount are adjusted to ensure that the mixture ratio has a certain gel ratio, and the concrete can keep certain compression strength quality. Hidden attribute parameters (CF, CB and FB) filled among materials are added, not only are complete mathematical definitions exist among proportioning materials, but also quantitative values of the relevant hidden attributes can be obtained through experiments, and the accuracy of proportioning characteristics is improved due to artificial empirical values. The unit cost of concrete production is reduced, and all materials are proportioned to be in compact combination, so that the gel material is the most economical use amount, and the unit cost of the concrete can be relatively reduced; the cost of quality management failure is reduced, the proportion is calculated by a system program, and the proportion is combined by four factors of slump, strength, cementing material configuration, thickness and the like; the use of the ratio is more flexible, the errors of calculation and use of the ratio can be reduced, and the loss of internal and external quality cost is reduced.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A method for automatically producing concrete proportion is characterized in that: the method specifically comprises the following steps:
s1: inputting sand and stone material sieve analysis data into an automatic concrete production proportioning system;
s2: the automatic concrete proportioning system distributes the proportion of coarse sand and fine sand according to the condition of the sand, adjusts the fineness modulus, inputs the proportion of large stones and small stones and determines the gradation of the stones according to the parameter database;
s3: and (4) inputting the final stone volume arbitrarily, and automatically generating a concrete proportioning system to deduce whether the volume of the current dry mortar meets the condition according to the standard coarse product coefficient, the sand coarse product variation and the stone coarse product variation, namely that the volume of the current dry mortar is more than or equal to the deduced dry mortar volume.
2. The method of automatically producing a concrete mix according to claim 1, wherein: the automatic production concrete proportioning system comprises a parameter database, a saturated surface-dry proportioning operation module and an actual proportioning operation module.
3. The method of automatically producing a concrete mix according to claim 1, wherein: the parameter database is used for storing a medicament optimal use rate parameter group, a standard proportioning parameter group, a raw material basic property parameter group, a material property parameter group, a strength parameter group and required slump.
4. The method of automatically producing a concrete mix according to claim 1, wherein: the parametric database includes characterization attribute data and masking attribute data.
5. The method of automatically producing a concrete mix according to claim 4, wherein: the characterization attribute data comprise water absorption, wet weight, mud content, dry weight, saturated surface dry SSD specific gravity, fineness FM value, health, wear rate, specific gravity of various cementing materials, activity, additive specific gravity and gas content of the aggregate.
6. The method of automatically producing a concrete mix according to claim 4, wherein: the hidden attribute data comprise surface water rate, coarse and fine stone distribution rate, coarse and fine sand distribution rate, fine aggregate comprehensive FM value, sand rate S/A, gelation ratio, water consumption, additive utilization rate, langu material utilization rate and material filling evaluation coefficient of the aggregate.
7. The method of automatically producing a concrete mix according to claim 6, wherein: the material filling evaluation coefficient comprises a coarse product coefficient CF, a fine product coefficient FB and a powder coarse system CB, wherein the coarse product coefficient CF is the ratio of filling coarse aggregate gaps with fine aggregates; the fine volume factor FB is the ratio of the fine aggregate voids filled with the cementitious material; the coarse powder system CB is a ratio of the voids of the coarse aggregate to be filled with the cement.
8. The method of automatically producing a concrete mix according to claim 2, characterized in that: the saturated dry-face proportion calculation module is used for calculating the saturated dry-face proportion according to the optimal medicament utilization rate parameter set, the standard proportion parameter set, the basic material property parameter set of raw materials, the material property parameter set, the strength parameter set and the required slump.
9. The method of automatically producing a concrete mix according to claim 8, wherein: the saturated surface dry proportion comprises cement amount, mineral powder amount, powder medium amount, saturated surface dry sand amount, saturated surface dry coarse aggregate amount and saturated surface dry clean water amount.
10. The method of automatically producing a concrete mix according to claim 2, characterized in that: the actual proportioning operation module is used for calculating actual proportioning according to the saturated surface dry sand amount, the saturated surface dry coarse aggregate amount, the saturated surface dry clean water amount and basic physical property parameters of raw materials, and the actual proportioning comprises cement amount, mineral powder amount, powder ash amount, actual sand amount, actual coarse aggregate amount and actual clean water amount.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395885.1A CN112435722A (en) | 2020-12-03 | 2020-12-03 | Method for automatically producing concrete proportion |
| CN2020113958851 | 2020-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113345537A true CN113345537A (en) | 2021-09-03 |
Family
ID=74690811
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011395885.1A Pending CN112435722A (en) | 2020-12-03 | 2020-12-03 | Method for automatically producing concrete proportion |
| CN202110659476.6A Pending CN113345537A (en) | 2020-12-03 | 2021-06-15 | Method for automatically producing concrete proportion |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011395885.1A Pending CN112435722A (en) | 2020-12-03 | 2020-12-03 | Method for automatically producing concrete proportion |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN112435722A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201121751A (en) * | 2009-12-28 | 2011-07-01 | rui-xing Lai | Method and system to automatically generate concrete mix ratio. |
| CN102114668A (en) * | 2009-12-30 | 2011-07-06 | 赖瑞星 | Method and system for automatically generating proportion of concretes |
| CN108395177A (en) * | 2018-04-24 | 2018-08-14 | 同济大学 | A kind of mix-design and preferred method of machine-made sand self-compacting concrete |
| CN109437749A (en) * | 2018-12-06 | 2019-03-08 | 云南建投绿色高性能混凝土股份有限公司 | C60 concrete and its mixing proportion design method based on package coarse aggregate mortar thickness |
-
2020
- 2020-12-03 CN CN202011395885.1A patent/CN112435722A/en active Pending
-
2021
- 2021-06-15 CN CN202110659476.6A patent/CN113345537A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201121751A (en) * | 2009-12-28 | 2011-07-01 | rui-xing Lai | Method and system to automatically generate concrete mix ratio. |
| CN102114668A (en) * | 2009-12-30 | 2011-07-06 | 赖瑞星 | Method and system for automatically generating proportion of concretes |
| CN108395177A (en) * | 2018-04-24 | 2018-08-14 | 同济大学 | A kind of mix-design and preferred method of machine-made sand self-compacting concrete |
| CN109437749A (en) * | 2018-12-06 | 2019-03-08 | 云南建投绿色高性能混凝土股份有限公司 | C60 concrete and its mixing proportion design method based on package coarse aggregate mortar thickness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112435722A (en) | 2021-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Anosike et al. | Sandcrete blocks and quality management in Nigeria Building Industry | |
| CN107445533B (en) | Mortar proportioning method | |
| Hüsken et al. | A new mix design concept for earth-moist concrete: A theoretical and experimental study | |
| CN108395177A (en) | A kind of mix-design and preferred method of machine-made sand self-compacting concrete | |
| CN105036626B (en) | A kind of method of multifactor parametric method design high performance concrete | |
| CN102887679B (en) | Preparation method of high-strength fully-recycled coarse aggregate concrete | |
| CN115028419B (en) | Design method for self-compacting concrete mix proportion | |
| Sahraoui et al. | Effects of fine aggregates types and contents on rheological and fresh properties of SCC | |
| CN104987002B (en) | A kind of method that cement-based self-leveling mortar level is matched somebody with somebody | |
| CN102923997B (en) | Method for preparing high-strength semi-regenerative coarse aggregate concretes | |
| CN107391790A (en) | Green self-compacting concrete and preparation method thereof | |
| CN108585635A (en) | A method of improving material granule packed density by optimizing fine and close filling particle diameter distribution | |
| CN107500658B (en) | Proportioning method of dense concrete | |
| CN106830828A (en) | C40~C50 high performance concretes and cooperation stirring means | |
| CN106116281B (en) | Coral reef sand concrete and preparation method thereof | |
| CN113345537A (en) | Method for automatically producing concrete proportion | |
| CN105260578B (en) | A kind of railway engineering self-compacting concrete component preparation method | |
| CN112142398A (en) | Quantitative design method for mix proportion of machine-made sand self-compacting concrete based on aggregate particle shape | |
| Hatem et al. | Optimization of concrete by minimizing void volume in aggregate mixture system | |
| CN113255103B (en) | Method for rapidly designing and correcting concrete mixing proportion | |
| CN112694301B (en) | Long-acting reduction type dolomite powder self-compacting concrete and preparation method thereof | |
| CN104944856B (en) | A kind of regeneration concrete method for preparing stability | |
| CN114997034A (en) | Method for predicting filling density and porosity of fiber-aggregate mixed accumulation body | |
| CN117637075B (en) | Concrete mix proportion design method based on big data | |
| JP4510985B2 (en) | Formulation determination method in CSG method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210903 |
|
| RJ01 | Rejection of invention patent application after publication |