CN113255103B - Method for rapidly designing and correcting concrete mixing proportion - Google Patents
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- CN113255103B CN113255103B CN202110448579.8A CN202110448579A CN113255103B CN 113255103 B CN113255103 B CN 113255103B CN 202110448579 A CN202110448579 A CN 202110448579A CN 113255103 B CN113255103 B CN 113255103B
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- 239000004567 concrete Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 54
- 239000004568 cement Substances 0.000 claims abstract description 50
- 239000004576 sand Substances 0.000 claims abstract description 49
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 238000013461 design Methods 0.000 claims abstract description 22
- 238000012937 correction Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 238000004364 calculation method Methods 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 20
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 13
- 239000004575 stone Substances 0.000 claims description 11
- 238000012795 verification Methods 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 6
- -1 admixture Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a method for rapidly designing and correcting a concrete mixing ratio, which comprises the following steps: step one, arbitrarily selecting a conventional concrete sample; recording the material consumption parameters and the strength grade of each concrete sample selected in the first step; substituting the formula to determine a formula coefficient; step four, substituting the target strength grade of the pre-prepared concrete into a specific formula in sequence; and step five, calculating the corresponding concrete mixing ratio according to the cement dosage, the water-cement ratio, the cement-bone ratio and the sand rate obtained in the step four. The invention provides a rapid concrete mix proportion design and correction method, which can rapidly obtain the mix proportion of the whole set of C15-C50 strength grade concrete through the existing individual mix proportion, has the correction function for the known mix proportion, and provides theoretical guidance and technical support for standardized, normalized and unified preparation of the concrete with the strength grade between C15 and C50.
Description
Technical Field
The invention belongs to the technical field of concrete, and particularly relates to a rapid design and correction method for a concrete mixing ratio.
Background
The common concrete is made of cement as main cementing material, water, sand and cobble, if necessary, chemical additive and mineral additive, and through mixing, homogeneous stirring, compact forming and curing. The concrete strength grade is divided into 14 grades according to the standard value of the cube compressive strength: c15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75 and C80. Because the concrete has the advantages of rich raw materials, low cost, good plasticity, available reinforcement and the like, the concrete is widely applied to civil engineering, and the total concrete yield of the concrete enterprise business mix is about 28 hundred million cubic meters over the whole national scale in 2020. In the concrete production of the building industry at present, the concrete mix proportion design has stronger experience dependence, and a mixing station is faced with heavy concrete mix proportion design work in engineering, so that a reliable mix proportion design result can be obtained by long-term trial-mixing verification. When various concrete with different strength needs to be produced, repeated trial and mixing verification is needed for many times, time and labor are wasted, the construction period is prolonged, and raw material waste is also caused; in addition, the mixing proportion may have human errors according to the experience design, accurate numerical values cannot be given, and standardized and large-scale production cannot be achieved better.
Disclosure of Invention
The invention aims to provide a rapid concrete mix proportion design and correction method, which aims to solve the problems that the concrete mix proportion design in the background technology is time-consuming and labor-consuming, wastes raw materials and cannot be produced in a standardized way.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a concrete mix proportion rapid design and correction method specifically comprises the following steps:
step one, arbitrarily selecting a conventional concrete sample: according to the existing specifications and engineering experience, determining concrete with at least three different strength grades, which are the same in raw material types, as concrete samples;
recording the material consumption parameters and the strength grade f of each concrete sample selected in the step one cu,k (MPa): the material consumption parameters comprise aggregate consumption A (kg), rubber material consumption B (kg), cement consumption C (kg), sand consumption S (kg) and water consumption W (kg);
step three, substituting the formula (one) - (five) to determine the formula coefficient: substituting the material consumption parameter and the intensity level f recorded in the second step cu,k And (4) calculating coefficients of formulas (one) - (five) through mathematical fitting software to obtain specific formulas (one) - (five), wherein the formulas (one) - (five) are specifically as follows:
C＝a1·f cu,k +b1 equation (one)
B＝a2·f cu,k +b2 equation (two)
Wherein,-representing sand rate, +.>-represents the water-gel ratio,>-representing the bone to gel ratio, a1, b1, a2, b2, a3, b3, a4, b4, a5, b5 and c5 being constant;
fourth, the target strength grade f of the pre-prepared concrete cu,k Substituting the cement into specific formulas (one) - (five) in sequence to respectively obtain the corresponding cement consumption C 1 (kg) amount of adhesive B 1 (kg) Water to gel ratioRubber-bone ratio->Sand rate->
Step five, according to the cement dosage C obtained in the step four 1 (kg) amount of adhesive B 1 (kg) Water to gel ratioRubber-bone ratio->Sand rate->And calculating to obtain the corresponding concrete mixing proportion.
Further, the method also comprises a sixth step of verifying the mixing proportion to obtain qualified concrete, wherein the specific verification steps are as follows:
s1, selecting a concrete sample to be verified;
s2, recording the material consumption parameter and the strength grade f of the concrete sample selected in S1 cu,k (MPa): the material consumption parameters comprise aggregate consumption A (kg), rubber material consumption B (kg), cement consumption C (kg), sand consumption S (kg) and water consumption W (kg);
s3, setting the concrete strength grade f of the concrete sample cu,k Substituting the cement into specific formulas (one) - (five) in the step three, and calculating to obtain a group of cement consumption C 1 (kg) amount of adhesive B 1 (kg) Water to gel ratioRubber-bone ratio->Sand rate->A numerical value;
s4, correspondingly comparing the numerical value obtained in the step S3 with the actual numerical value of the concrete sample, and calculating the difference value of each numerical value;
s5, judging whether the concrete sample is qualified concrete or not according to the numerical value difference value calculated in the S4: the cement consumption difference of the qualified concrete is within 10kg, the cement consumption difference is within 15kg, the water-cement ratio difference is within 0.02, the cement-bone ratio difference is within 0.01, and the sand rate difference is within 0.02.
Further, in the steps one to three, three kinds of materials are selected arbitrarilyMaterial usage parameters and strength class f for concrete examples cu,k (MPa), coefficients a1 and b1 of formula (one), coefficients a2 and b2 of formula (two), coefficients a3 and b3 of formula (four), coefficients a4 and b4 of formula (four), and coefficients a5, b5, and c5 of formula (five) are determined by mathematical fitting software.
Further, the specific method in the fifth step is as follows:
s1, the dosage B of the adhesive material 1 (kg) and Water to gel ratioObtaining the water dosage W 1 (kg), the calculation formula (six) is:
s2, using the adhesive material quantity B 1 (kg), gum to bone ratioObtaining the aggregate consumption A 1 (kg), a calculation formula (seventh) is:
s3, using the adhesive material quantity B 1 (kg), cement amount C 1 (kg) to give the admixture amount F 1 (kg), the calculation formula (eight) is:
F 1 ＝B 1 -C 1 formula (eight)
S4, using the aggregate amount A 1 (kg), sand ratioObtaining the sand dosage S 1 (kg) and lithotriptic amount G 1 (kg), the calculation formula (nine) and the calculation formula (ten) are as follows:
further, the concrete samples and pre-formulated concrete have strength grades between C15 and C50.
Further, the concrete sample comprises cement, glue, admixture, water, sand and broken stone as raw materials.
Further, the admixture is fly ash or mineral powder.
Further, the selected concrete samples have strength grades of C20, C30, and C45.
Further, the specific formulas (one) to (five) are:
C＝4.2474·f cu,k +133.5 equation (one)
B＝5.2421·f cu,k +217 equation (two)
β S ＝-0.00001·f cu,k 2 +0.0004·f cu,k Equation (five) for + 0.4268.
The invention has the following beneficial effects:
1. according to the rapid concrete mix proportion design and correction method provided by the invention, the existing concrete mix proportion can be used for rapidly obtaining the concrete mix proportion with the strength grade between C15 and C50, so that blindness and randomness of mix proportion design of a mixing station are avoided, and the effects of improving efficiency and saving raw materials can be exerted in concrete production management.
2. The rapid concrete mix proportion design and correction method provided by the invention has the correction and inspection functions for the known mix proportion, and is convenient for finding out human errors in the mix proportion designed according to experience.
3. The core of the rapid concrete mix proportion design and correction method provided by the invention is the mathematical relationship between the strength grade and the material parameter, and the series of mathematical relationships can be used as a reference for measuring the performances of different raw materials, so that the management of a mixing station is more scientific and ordered.
4. The rapid design and correction method for the concrete mix proportion provided by the invention has the advantages of simple flow and strong systematicness, provides theoretical guidance and technical support for large-scale standardized, normalized and unified preparation and popularization and application of concrete with the strength grade between C15 and C50, improves the quality of the concrete, and reduces the production cost of the concrete.
Detailed Description
The invention discloses a method for rapidly designing and correcting a concrete mixing ratio, which specifically comprises the following steps:
the first step: according to the existing specifications and engineering experience, determining at least three concrete with the strength grade between C15 and C50 as concrete samples, and recording the material consumption parameters and the strength grade f of each concrete sample cu,k The material consumption parameters comprise aggregate consumption A (kg), glue material consumption B (kg), cement consumption C (kg), sand consumption S (kg) and water consumption W (kg). Wherein, raw materials of the concrete with each strength are cement, glue material, admixture, water, sand and broken stone, and performance parameters of the raw materials are consistent;
and a second step of: substituting the material consumption parameters of the concrete sample into formulas (one) - (five), and calculating the coefficients of formulas (one) - (five) through mathematical fitting software to obtain specific formulas (one) - (five). Wherein, the cement dosage C (kg), the rubber material dosage B (kg), the rubber-bone ratio and the concrete strength grade f cu,k The relation between (MPa) is a linear relation, and the mathematical expression is a unitary first-order equation; water-gel ratio and strength grade f cu,k The (MPa) is an exponential relation, and the mathematical expression is a power value function; sand ratio and strength grade f cu，k The (MPa) is a polynomial relation, and the mathematical expression is a unitary quadratic function. Formula (one) to the upper(V) the following:
C＝a1·f cu，k +b1 equation (one)
B＝a2·f cu，k +b2 equation (two)
Wherein,-representing sand rate, +.>-represents the water-gel ratio,>-representing the bone to gel ratio, a1, b1, a2, b2, a3, b3, a4, b4, a5, b5 and c5 being constant;
and a third step of: target strength grade f of concrete to be pre-formulated cu，k Sequentially substituting the concrete formulas (one) - (five) to calculate the cement consumption C corresponding to the concrete with different strength grades 1 (kg) amount of adhesive B 1 (kg) Water to gel ratioRubber-bone ratio->Sand rate->
Fourth step: according to the cement amount C obtained in the third step 1 (kg) amount of adhesive B 1 (kg) Water to gel ratioRubber-bone ratio->Sand rate->Calculating the water consumption W for the opposite use 1 (kg), aggregate amount A 1 (kg), admixture F 1 (kg), sand usage S 1 (kg) and lithotriptic amount G 1 (kg) and further obtaining the corresponding concrete mixing ratio. The method comprises the following specific steps:
s1, the dosage B of the adhesive material 1 (kg) Water to gel ratioObtaining the water dosage W 1 (kg), the calculation formula (six) is:
s2, using the adhesive material quantity B 1 (kg), gum to bone ratioObtaining the aggregate consumption A 1 (kg), a calculation formula (seventh) is:
s3, using the adhesive material quantity B 1 (kg), cement amount C 1 (kg) to give the admixture amount F 1 (kg), the calculation formula (eight) is:
F 1 ＝B 1 -C 1 formula (eight)
S4, using the aggregate amount A 1 (kg), sand ratioObtaining the sand dosage S 1 (kg) and lithotriptic amount G 1 (kg), the calculation formula (nine) and the calculation formula (ten) are as follows:
fifth step: according to the slump requirement of concrete, the additive amount is obtained, and is not considered in the invention because the additive amount is greatly influenced by the technical capacity of suppliers.
Sixth step: verifying the mixing proportion to obtain qualified concrete, wherein the verification steps are as follows:
s1, selecting a concrete sample to be verified;
s2, recording the material consumption parameter and the strength grade f of the concrete sample selected in S1 cu，k (MPa): the material consumption parameters comprise aggregate consumption A (kg), rubber material consumption B (kg), cement consumption C (kg), sand consumption S (kg) and water consumption W (kg);
s3, setting the concrete strength grade f of the concrete sample cu，k Substituting the cement into specific formulas (one) - (five) in the step three, and calculating to obtain a group of cement consumption C 1 (kg) amount of adhesive B 1 (kg) Water to gel ratioRubber-bone ratio->Sand rate->A numerical value;
s4, correspondingly comparing the numerical value obtained in the step S3 with the actual numerical value of the concrete sample, and calculating the difference value of each numerical value;
s5, judging whether the concrete sample is qualified concrete or not according to the numerical value difference value calculated in the S4: the cement consumption difference of the qualified concrete is within 10kg, the cement consumption difference is within 15kg, the water-cement ratio difference is within 0.02, the cement-bone ratio difference is within 0.01, and the sand rate difference is within 0.02.
The technical scheme of the invention will be further described with reference to specific experimental examples.
According to the existing specifications and engineering experience, concrete with three strength grades of C20, C30 and C45 is selected as concrete samples, raw materials of each strength concrete are cement, glue, admixture, water, sand and crushed stone, wherein the admixture is fly ash, performance parameters of each raw material are consistent, and the specific material consumption parameters are shown in table 1:
TABLE 1 Material usage parameters for concrete examples
| Grade | Cement (kg) | Admixture (kg) | Sand (kg) | Macadam (kg) | Water (kg) | Ratio of water to gel | Rubber-bone ratio | Sand rate |
| C20 | 210 | 103 | 821 | 1094 | 160 | 0.511 | 0.163 | 0.429 |
| C30 | 275 | 114 | 794 | 1071 | 157 | 0.404 | 0.209 | 0.426 |
| C45 | 319 | 128 | 754 | 1057 | 147 | 0.329 | 0.247 | 0.416 |
Substituting the material consumption parameters of C20, C30 and C45 into formulas (one) - (five), calculating coefficients of formulas (one) - (five) by using mathematical fitting software (excel or origin) to obtain specific formulas (one) - (five), wherein the specific formulas are as follows:
C＝4.2474·f cu,k +133.5 equation (one)
B＝5.2421·f cu,k +217 equation (two)
β S ＝-0.00001·f cu，k 2 +0.0004·f cu,k +0.4268 formula (five)
Strength grade f of C15-C50 concrete cu,k And substituting the concrete into specific formulas (one) - (five) in sequence to obtain the values of cement dosage (kg), glue material dosage (kg), water-glue ratio (kg), glue bone ratio and sand rate of the concrete with each strength grade between C15 and C50, wherein the values are specifically shown in the table 2:
table 2.5 parameter index calculation results
According to the calculated cement amount, glue material amount, water-glue ratio, glue-bone ratio and sand ratio of the concrete with each strength grade, corresponding water amount, aggregate amount, admixture, sand amount and crushed stone amount values are calculated, and then the concrete mixing ratio of each strength grade between C15 and C50 is obtained, and the concrete method comprises the following steps:
s1, obtaining the water consumption through the calculated glue material consumption and the water-glue ratio, wherein a calculation formula (six) is as follows:
wherein W is 1 -representing the water consumption (kg); b (B) 1 -representing the glue dosage (kg) calculated according to formula (two);-representing the water-gel ratio calculated according to formula (three);
s2, obtaining the aggregate consumption through the glue material consumption and the glue bone ratio, wherein a calculation formula (seventh) is as follows:
wherein A is 1 -representing the aggregate amount (kg);-representing the bone to gel ratio calculated according to equation (four);
s3, obtaining the admixture dosage through the cement dosage and the glue dosage, wherein the calculation formula (eight) is as follows:
F 1 ＝B 1 -C 1 formula (eight)
Wherein F is 1 -representing the amount of admixture (kg); c (C) 1 -representing the cement quantity calculated according to formula (one);
s4, obtaining the sand consumption and the broken stone consumption through the aggregate consumption and the sand rate, wherein the calculation formula (nine) and the formula (ten) are as follows:
S 1 ＝A 1 ·β s1 formula (nine)
Wherein S is 1 -representing sand usage (kg);-representing the sand ratio calculated according to formula (five); g 1 -representing the amount of crushed stone (kg).
The resulting mix ratios for each strength grade concrete are shown in table 3:
TABLE 3 concrete mix ratio of each strength grade
| Intensity level | Cement amount (kg) | Admixture (kg) | Sand amount (kg) | Use level of broken stone (kg) | Water consumption (kg) |
| C15 | 197 | 98 | 837 | 1107 | 176 |
| C20 | 218 | 103 | 822 | 1087 | 164 |
| C25 | 240 | 108 | 810 | 1071 | 157 |
| C30 | 261 | 113 | 798 | 1059 | 153 |
| C35 | 282 | 118 | 787 | 1049 | 150 |
| C40 | 303 | 123 | 776 | 1043 | 149 |
| C45 | 325 | 128 | 766 | 1038 | 148 |
| C50 | 346 | 133 | 755 | 1035 | 148 |
According to the slump requirement of concrete, the additive amount is obtained, and is not considered in the invention because the additive amount is greatly influenced by the technical capacity of suppliers.
According to the obtained mix proportion of the concrete with each strength grade, corresponding concrete test blocks are manufactured, and the corresponding performances measured through experiments all meet the design requirements, wherein the compressive strength is obviously superior to the preset compressive strength, and the specific experimental results are shown in table 4:
TABLE 4 Performance indices of the concretes produced according to the method of the invention
Concrete with the strength grade of C40 is selected as the concrete to be verified, and the raw materials are cement, glue materials, admixture, water, sand and crushed stone, wherein the admixture is fly ash, and the specific material dosage parameters are shown in Table 5:
TABLE 5 Material usage parameters of the concrete to be verified
The difference between the consumption parameters of the concrete materials to be verified and the consumption of each material of the C40 concrete calculated by the method is as follows: 3kg of cement consumption difference, 1kg of admixture consumption difference, 4kg of sand difference consumption value, 2kg of broken stone consumption difference, 1kg of water consumption difference, 0 of water-cement ratio difference, 0.002 of cement-bone ratio difference and 0.002 of sand ratio difference.
The cement consumption difference is within 10kg, the glue material consumption difference is within 15kg, the water-glue ratio difference is within 0.02, the glue-bone ratio difference is within 0.01, and the sand ratio difference is within 0.02, so the concrete to be verified is qualified concrete. The properties of the concrete to be verified were further examined by experiments, and the specific experimental results are shown in table 6:
TABLE 6 Performance index of the concrete to be verified
| Intensity level | Compressive strength (MPa) | Workability of | Durability of |
| C40 | 48.7 | Meets the design requirements | Meets the design requirements |
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The rapid concrete mix proportion design and correction method is characterized by comprising the following steps:
step one, arbitrarily selecting a conventional concrete sample: according to the existing specifications and engineering experience, determining concrete with at least three different strength grades, which are the same in raw material types, as concrete samples;
recording the material consumption parameters and the strength grade f of each concrete sample selected in the step one cu,k The unit is MPa: the material consumption parameters comprise aggregate consumption A, the unit is kg,the unit of the glue material amount B is kg, the unit of the cement amount C is kg, the unit of the sand amount S is kg, and the unit of the water amount W is kg;
step three, substituting the formula (one) - (five) to determine the formula coefficient: substituting the material consumption parameter and the intensity level f recorded in the second step cu,k The unit is MPa, coefficients of formulas (one) - (five) are obtained through calculation of mathematical fitting software, and specific formulas (one) - (five) are obtained, wherein the formulas (one) - (five) are specifically as follows:
C＝a1·f cu,k +b1 equation (one)
B＝a2·f cu,k +b2 equation (two)
Wherein,represents sand rate>Represents the water-gel ratio, < >>Representing the bone-to-gel ratio, a1, b1, a2, b2, a3, b3, a4, b4, a5, b5 and c5 are all constants;
fourth, the target strength grade f of the pre-prepared concrete cu,k Substituting the cement into specific formulas (one) - (five) in sequence to respectively obtain the corresponding cement consumption C 1 The unit is kg, and the dosage of the adhesive material B 1 The unit is kg, the water-gel ratio isRubber-bone ratio->Sand rate->
Step five, according to the cement dosage C obtained in the step four 1 The unit is kg, and the dosage of the adhesive material B 1 The unit is kg, the water-gel ratio isRubber-bone ratio->Sand rate->The concrete mixing proportion is calculated and obtained correspondingly, and the concrete mixing proportion comprises the following concrete steps:
s1, the dosage B of the adhesive material 1 The unit is kg, the water-gel ratio isObtaining the water dosage W 1 The unit is kg, and the calculation formula (six) is:
s2, using the adhesive material quantity B 1 The unit is kg, the rubber-bone ratio isObtaining the aggregate consumption A 1 The unit is kg, and the calculation formula (seventh) is:
s3, using the adhesive material quantity B 1 The unit is kg, and the cement dosage C 1 The unit is kg, and the dosage F of the admixture is obtained 1 The unit is kg, and the calculation formula (eight) is:
F 1 ＝B 1 -C 1 formula (eight)
S4, using the aggregate amount A 1 The unit is kg, sand rateObtaining the sand dosage S 1 The unit is kg, the crushed stone dosage G 1 The unit is kg, and the calculation formula (nine) and the formula (ten) are as follows:
wherein, in the first step to the third step, the material consumption parameters and the strength grade f of three concrete samples are arbitrarily selected cu,k The coefficients a1 and b1 of formula (one), the coefficients a2 and b2 of formula (two), the coefficients a3 and b3 of formula (four), the coefficients a4 and b4 of formula (four) and the coefficients a5, b5 and c5 of formula (five) are determined by mathematical fitting software in MPa.
2. The method for rapidly designing and correcting the concrete mix ratio according to claim 1, further comprising a sixth step of verifying the mix ratio to obtain qualified concrete, wherein the specific verification steps are as follows:
s1, selecting a concrete sample to be verified;
s2, recording the material consumption of the concrete sample selected in S1Parameters and intensity class f cu,k The unit is MPa: the material consumption parameters comprise aggregate consumption A, unit of kg, rubber material consumption B, unit of kg, cement consumption C, unit of kg, sand consumption S, unit of kg, water consumption W and unit of kg;
s3, setting the concrete strength grade f of the concrete sample cu,k Substituting the cement into specific formulas (one) - (five) in the step three, and calculating to obtain a group of cement consumption C 1 The unit is kg, and the dosage of the adhesive material B 1 The unit is kg, the water-gel ratio isRubber-bone ratio->And sand rateA numerical value;
s4, correspondingly comparing the numerical value obtained in the step S3 with the actual numerical value of the concrete sample, and calculating the difference value of each numerical value;
s5, judging whether the concrete sample is qualified concrete or not according to the numerical value difference value calculated in the S4: the cement consumption difference of the qualified concrete is within 10kg, the cement consumption difference is within 15kg, the water-cement ratio difference is within 0.02, the cement-bone ratio difference is within 0.01, and the sand rate difference is within 0.02.
3. The method for rapid design and correction of concrete mix according to claim 1, wherein the concrete sample and the pre-formulated concrete have a strength grade between C15 and C50.
4. The method for rapidly designing and correcting a concrete mix ratio according to claim 1, wherein the concrete sample is prepared from cement, a glue material, an admixture, water, sand and crushed stone.
5. The method for rapid concrete mix design and correction according to claim 4, wherein the admixture is fly ash or mineral powder.
6. The method for rapid concrete mix design and correction according to claim 1, wherein the selected concrete samples have strength levels of C20, C30 and C45.
7. The method for rapid concrete mix design and correction according to claim 6, wherein the specific formulas (one) - (five) are:
C＝4.2474·f cu,k +133.5 equation (one)
B＝5.2421·f cu,k +217 equation (two)
β s ＝-0.00001·f cu,k 2 +0.0004·f cu,k Equation (five) for + 0.4268.
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| CN103992076A (en) * | 2014-05-27 | 2014-08-20 | 广西大学 | Design method of concrete mix ratio based on requirements of index of resistance to chloride ion intrusion and strength index |
| CN105844007A (en) * | 2016-03-21 | 2016-08-10 | 深圳大学 | Concrete mix proportion design method based on dual indexes including strength and chloride ion permeability |
| CN111415712A (en) * | 2020-01-01 | 2020-07-14 | 王玉海 | Digital concrete preparation method and digital concrete mixing proportion |
| CN112329326A (en) * | 2020-11-06 | 2021-02-05 | 浙江大学 | Ocean engineering recycled concrete mix proportion design method based on CPM model correction and rust inhibitor protection |
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| CN103992076A (en) * | 2014-05-27 | 2014-08-20 | 广西大学 | Design method of concrete mix ratio based on requirements of index of resistance to chloride ion intrusion and strength index |
| CN105844007A (en) * | 2016-03-21 | 2016-08-10 | 深圳大学 | Concrete mix proportion design method based on dual indexes including strength and chloride ion permeability |
| CN111415712A (en) * | 2020-01-01 | 2020-07-14 | 王玉海 | Digital concrete preparation method and digital concrete mixing proportion |
| CN112329326A (en) * | 2020-11-06 | 2021-02-05 | 浙江大学 | Ocean engineering recycled concrete mix proportion design method based on CPM model correction and rust inhibitor protection |
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