CN106777535A - Alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method and system - Google Patents
Alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method and system Download PDFInfo
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- 239000003513 alkali Substances 0.000 title claims abstract description 171
- 239000004567 concrete Substances 0.000 title claims abstract description 133
- 239000010430 carbonatite Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000013461 design Methods 0.000 title claims abstract description 38
- 239000000203 mixture Substances 0.000 title claims abstract description 35
- 239000003292 glue Substances 0.000 claims abstract description 84
- 230000006835 compression Effects 0.000 claims abstract description 73
- 238000007906 compression Methods 0.000 claims abstract description 73
- 239000007787 solid Substances 0.000 claims abstract description 67
- 230000008929 regeneration Effects 0.000 claims abstract description 64
- 238000011069 regeneration method Methods 0.000 claims abstract description 64
- 239000004576 sand Substances 0.000 claims abstract description 47
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 19
- 239000010881 fly ash Substances 0.000 claims description 13
- 230000003660 hair regeneration Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 108010048734 sclerotin Proteins 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
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Abstract
A kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method and system are proposed present invention is disclosed the present invention, method is comprised the following steps：According to the performance requirement of application scenarios, target compression strength, and selected corresponding alkali glue ratio and tension variance are determined；According to fcu,0≥fcu,k+1.645σk, obtain fcu,0Concrete numerical value；According to alkali glue ratio, corresponding regression coefficient and glue sand 28d compression strength values are obtained, further according to alkali glue ratio, trial strength, regression coefficient and glue sand 28d compression strength, be calculated water-solid ratio；According to alkali glue than, water-solid ratio, slurry bone mass than being calculated the content of each component than method using slurry bone mass with sand coarse aggregate ratio.The beneficial effects of the invention are as follows：Use the alkali-activated carbonatite concrete of regeneration aggregate; fully cause the recycling of waste resource; be conducive to environmental protection; obtain being applicable the computation model of alkali-activated carbonatite regeneration concrete by water-solid ratio; calculated according to the actual mass relation between concrete each component; obtain match ratio more accurate, its scope of application is wider.
Description
Technical field
The present invention relates to concrete preparation field, a kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete is especially related to
Method and system.
Background technology
Concrete, refers to by the general designation of the cementing integral engineered composite material of aggregate by Binder Materials.That generally says is mixed
It refers to make Binder Materials, sand, masonry aggregate with cement to coagulate a native word；Match somebody with somebody by a certain percentage with water (additive and admixture can be contained)
Close, it is agitated obtained by cement concrete, also referred to as normal concrete, it is widely used in civil engineering.Regeneration concrete, refer to
By discarded concrete block by after broken, cleaning, classification, by a certain percentage with level with mixing, partly or entirely instead of sandstone
Deng natural aggregate (mainly coarse aggregate), add cement, water etc. with novel concrete.Regeneration concrete presses the group of aggregate
Conjunction form can have following several situations：The all regenerated aggregates of aggregate；Coarse aggregate is regeneration aggregate, fine aggregate is natural sand；
Coarse aggregate is natural rubble or cobble, fine aggregate are regeneration aggregate；Regeneration aggregate substitutes part of coarse aggregates or fine aggregate.
With continuing to develop for concrete technology, people constantly deepen for concrete this construction material understanding, it is considered to
Sustainable design theory and the idea to the protection of ecological environment are increasingly deepened.But due to current tradition Portland cement
Extensive application not only consume substantial amounts of natural resources, while in preparation process and the later stage is substantial amounts of using that can give off
Gas.According to current research, the discharge capacity that cement industry just produces 1.8Gt is often only in global range, about account for mankind's life
The 5-7% of total emission volumn during product.As shown by data, cement per ton can produce the discharge capacity of 0.8t.Therefore, using industrial residue
It is significant with regeneration concrete prepared by the regeneration aggregate from building castoff.Regeneration concrete, referring to will be discarded
Concrete block by after broken, cleaning, classification, replacing sandstone etc. with mix, partly or entirely naturally with level by a certain percentage
Aggregate (mainly coarse aggregate), add cement, water etc. with novel concrete.Regeneration concrete presses the combining form of aggregate
There can be following several situations：The all regenerated aggregates of aggregate；Coarse aggregate is regeneration aggregate, fine aggregate is natural sand；Coarse aggregate
For natural rubble or cobble, fine aggregate are regeneration aggregate；Regeneration aggregate substitutes part of coarse aggregates or fine aggregate.With traditional baud
Blue cement concrete is compared, and alkali-activated carbonatite regeneration concrete both can effectively solve the process problem of a large amount of building castoffs, and energy
Realize to the regeneration of discarded object so as to save natural resources, take into account ecological and environmental benefit.Additionally, this kind of concrete is utilized
Alkali-activated carbonatite Binder Materials replaces traditional cement glue material, can be greatly lowered in concrete preparation process due to using cement gel
The carbon emission that gel material brings, thus further embody the thought of " Green Development ".
So far, although scholars have been achieved for many achievements for the research of alkali-activated carbonatite concrete, it was also proposed that
Many mixing proportion design methods, but report that natural aggregate prepares alkali-activated carbonatite concrete is substituted extremely with complete regenerated coarse aggregate
It is modern still more rare.Existing mix-design scheme, there is a problem of that final products intensity and endurance quality cannot be taken into account, or
Person is that concrete density simply is set as into a steady state value carries out the calculating of match ratio.Other ObadaKayali is pointed out, pushed away
The engineer applied task of top priority of wide alkali-activated carbonatite concrete is to propose a set of suitable, simple and practical mixing proportion design method.
The content of the invention
The main object of the present invention is a kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method and system of offer, according to mixed
Actual relationship between solidifying soil each component is calculated, and the scope of application is wider, obtains accurate match ratio.
The present invention proposes a kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method, comprises the following steps：
According to the performance requirement of application scenarios, the target compression strength f of target alkali-activated carbonatite regeneration concrete is determinedcu,k, and
Suitable alkali glue is selected than A/B and tension variance σk；
According to fcu,0≥fcu,k+1.645σk, obtain fcu,0Concrete numerical value, wherein fcu,0It is the examination of alkali-activated carbonatite regeneration concrete
With intensity；
According to alkali glue than A/B, corresponding regression coefficient α is obtaineda、αbWith glue sand 28d compression strength fbValue, further according to alkali
Glue is than A/B, trial strength fcu,0, regression coefficient αa、αbWith glue sand 28d compression strength fb, it is calculated water-solid ratio W/GPS；
Alkali is calculated than method using slurry bone mass than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio according to alkali glue
Excite the content of each component in regeneration concrete.
Further, the performance requirement according to concrete application scene, determines that the target of alkali-activated carbonatite regeneration concrete resists
Compressive Strength fcu,k, and before selecting suitable alkali glue than A/B and tension variance σ steps, including：
According to formulaIt is calculated the different compression strength of alkali-activated carbonatite regeneration concrete
fcuCorresponding tension variance σ, and by compression strength fcuNumerical value and corresponding tension variance σ are corresponded and are stored as
Standard deviation data storehouse.
Further, the performance requirement according to concrete application scene, determines that the target of alkali-activated carbonatite regeneration concrete resists
Compressive Strength fcu,k, and suitable alkali glue is selected than A/B and tension variance σkStep, including：
By target compression strength fcu,kWith compression strength f in standard deviation data storehousecuData are matched, and find target resistance to compression
Intensity fCu, kThe corresponding target strength standard deviation sigma of numerical valuekNumerical value.
Further, it is described according to alkali glue than A/B, obtain corresponding regression coefficient αa、αbWith glue sand 28d compression strength fb
Value, further according to alkali glue than A/B, trial strength fcu,0, regression coefficient αa、αbWith glue sand 28d compression strength fb, it is calculated water
Gu than W/GPS, including：
By formulaIt is calculated water-solid ratio W/GPS.
Further, it is described that slurry bone mass ratio is used than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio according to alkali glue
Method is calculated the content step of each component in alkali-activated carbonatite regeneration concrete, including：
Calculated using following relational equation,
Bonding component consumption * alkali glue ratio=aqueous slkali * alkali mass fraction of solids；
Aqueous slkali * (1- alkali mass fraction of solids)+additional water=(bonding component consumption+aqueous slkali * alkali solid masses point
Number) * water-solid ratios；
(bonding component consumption+aqueous slkali+additional water) * slurry bone mass ratio=regenerated coarse aggregate+fine aggregate；
Fine aggregate=(regenerated coarse aggregate+fine aggregate) * sand coarse aggregate ratios；
Regenerated coarse aggregate=(regenerated coarse aggregate+fine aggregate)-fine aggregate；
Miberal powder consumption=bonding component consumption * 90%；
Flyash consumption=bonding component consumption-miberal powder consumption.
The invention allows for a kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete system, including：
Target component unit, for the performance requirement according to application scenarios, determines the mesh of target alkali-activated carbonatite regeneration concrete
Mark compression strength fcu,k, and suitable alkali glue is selected than A/B and tension variance σk；
Trial strength computing unit, for according to fcu,0≥fcu,k+1.645σk, obtain fcu,0Concrete numerical value, wherein fcu,0For
The trial strength of alkali-activated carbonatite regeneration concrete；
Water-solid ratio computing unit, for, than A/B, obtaining corresponding regression coefficient α according to alkali gluea、αbWith glue sand 28d resistance to compressions
Intensity fbValue, further according to alkali glue than A/B, trial strength fcu,0, regression coefficient αa、αbWith glue sand 28d compression strength fb, calculate
To water-solid ratio W/GPS；
Mix calculation unit, for using slurry bone than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio according to alkali glue
Quality is calculated the content of each component in alkali-activated carbonatite regeneration concrete than method.
Further, also include standard deviation data storehouse and set up unit, for according to formula
It is calculated the different compression strength f of alkali-activated carbonatite regeneration concretecuCorresponding tension variance σ, and by compression strength fcuNumerical value
Corresponded with corresponding tension variance σ and be stored as standard deviation data storehouse.
Further, the target component unit, includes target component module, for by target compression strength fcu,kWith
Compression strength f in standard deviation data storehousecuData are matched, and find target compression strength fCu, kThe corresponding target strength mark of numerical value
Quasi- difference σkNumerical value.
Further, the water-solid ratio computing unit, includes water-solid ratio W/GPS computing modules, for by formulaIt is calculated water-solid ratio W/GPS.
Further, the mix calculation unit includes mix calculation module, for using following relational equation
Calculated：
Bonding component consumption * alkali glue ratio=aqueous slkali * alkali mass fraction of solids；
Aqueous slkali * (1- alkali mass fraction of solids)+additional water=(bonding component consumption+aqueous slkali * alkali solid masses point
Number) * water-solid ratios；
(bonding component consumption+aqueous slkali+additional water) * slurry bone mass ratio=regenerated coarse aggregate+fine aggregate；
Fine aggregate=(regenerated coarse aggregate+fine aggregate) * sand coarse aggregate ratios；
Regenerated coarse aggregate=(regenerated coarse aggregate+fine aggregate)-fine aggregate；
Miberal powder consumption=bonding component consumption * 90%；
Flyash consumption=bonding component consumption-miberal powder consumption.
The beneficial effects of the invention are as follows：Replace the alkali-activated carbonatite coagulation of natural aggregate using regeneration aggregates such as building castoffs
Soil, not only expands the use scope of alkali-activated carbonatite concrete, also fully causes the recycling of waste resource, is conducive to environment to protect
Shield；Obtain being applicable the computation model of alkali-activated carbonatite regeneration concrete by using water-solid ratio, and establish Different Alkali glue than lower correspondence
Regression coefficient and 28d glue sand compression strength, it is final to calculate that to meet alkali-activated carbonatite regeneration concrete strong than method using slurry bone mass
The each component content of degree, finally gives alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method, according between concrete each component
Actual mass relation is calculated, and obtains that match ratio is more accurate, and its scope of application is wider.
Brief description of the drawings
Fig. 1 is a kind of method flow diagram of embodiment of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method one of the invention；
Fig. 2 is a kind of method flow diagram of another embodiment of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method of the invention；
Fig. 3 is a kind of structured flowchart of embodiment of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete system one of the invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology), with art of the present invention in those of ordinary skill general understanding identical meaning.Should also
Understand, those terms defined in such as general dictionary, it should be understood that with the context with prior art
The consistent meaning of meaning, and unless by specific definitions as here, will not otherwise use idealization or excessively formal implication
To explain.
Reference picture 1, proposition one embodiment of the invention, a kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method, including with
Lower step：
S2, the performance requirement according to application scenarios, determine the target compression strength f of target alkali-activated carbonatite regeneration concretecu,k,
And suitable alkali glue is selected than A/B and tension variance σk。
S3, according to fcu,0≥fcu,k+1.645σk, obtain fcu,0Concrete numerical value, wherein fcu,0It is alkali-activated carbonatite regeneration concrete
Trial strength.
S4, according to alkali glue than A/B, obtain corresponding regression coefficient αa、αbWith glue sand 28d compression strength fbValue, further according to
Alkali glue is than A/B, trial strength fcu,0, regression coefficient αa、αbWith glue sand 28d compression strength fb, it is calculated water-solid ratio W/GPS.
S5, according to alkali glue than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio using slurry bone mass be calculated than method
The content of each component in alkali-activated carbonatite regeneration concrete.
With reference to Fig. 2, in another embodiment of the present invention, step S1 was also included before step S2, specially：
S1, according to formulaIt is calculated the different pressure resistance of alkali-activated carbonatite regeneration concrete
Degree fcuCorresponding tension variance σ, and by compression strength fcuNumerical value and corresponding tension variance σ correspond storage
It is standard deviation data storehouse.
Step S1 as described above, different compression strength f are calculated by above-mentioned tension variance σ computing formulacu
Corresponding tension variance σ, and according to tension variance σ in table 1 and compression strength fcuOne-to-one form is recorded as data
Form, above-mentioned standard deviation data storehouse 5 is in the present embodiment table 1, and table 1 is as follows.
The alkali-activated carbonatite Compressive Strength of Recycled Concrete standard deviation sigma of table 1
Step S2 as described above, the target compression strength f of concrete is being determined according to practical application scenecu,kIt
Afterwards, according to intensity index and design of common concrete proportioning method JGJ55-2011《Design of common concrete proportioning code》
Requirement determine that alkali glue compares A/B；In addition by target compression strength fcu,kWith compression strength f in table 1cuData Comparison, finds and mesh
Mark compression strength fcu,kThe same or like compression strength f of numerical valuecu, and select to be adapted to the tension variance σ numerical value conducts of scope
Tension variance σkNumerical value, to carry out the calculating of next step.Specifically, according to this result of table 1, when alkali-activated carbonatite regeneration concrete
Strength standard value is located at when in the range of 45Mpa to 65Mpa, and its tension variance can directly take 4.0Mpa. and that is not look into
Table.When positioned at this scope, tension variance directly takes 4.0.When alkali-activated carbonatite recycled concrete strength standard value is not located at this scope
When, also can obtain its tension variance by being adapted to.
Step S4 as described above, especially by formulaIt is calculated water-solid ratio W/GPS.
Wherein regression coefficient can table look-up than A/B according to alkali glue and 2 obtain, and table 2 is as follows：
Value of the Different Alkali glue of table 2 than Coefficient of Regression
Step S5 as described above, slurry sclerotin is used according to alkali glue than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio
Amount is calculated the content step of each component in alkali-activated carbonatite regeneration concrete than method, including：
Calculated using following relational equation：
Bonding component consumption * alkali glue ratio=aqueous slkali * alkali mass fraction of solids；
Aqueous slkali * (1- alkali mass fraction of solids)+additional water=(bonding component consumption+aqueous slkali * alkali solid masses point
Number) * water-solid ratios；
(bonding component consumption+aqueous slkali+additional water) * slurry bone mass ratio=regenerated coarse aggregate+fine aggregate；
Fine aggregate=(regenerated coarse aggregate+fine aggregate) * sand coarse aggregate ratios；
Regenerated coarse aggregate=(regenerated coarse aggregate+fine aggregate)-fine aggregate；
Miberal powder consumption=bonding component consumption * 90%；
Flyash consumption=bonding component consumption-miberal powder consumption.
Alkali-activated carbonatite glue material 28d glue sand compression strength in the trial stretch of table 3
Wherein, aqueous slkali, alkali glue ratio, alkali mass fraction of solids, water-solid ratio, slurry bone mass ratio and sand coarse aggregate ratio are known parameters,
Remaining bonding component consumption, additional water, regenerated coarse aggregate, fine aggregate, miberal powder consumption and flyash consumption are unknown parameter.Pass through
Each known parameters substitutes into additional water, regenerated coarse aggregate, fine aggregate, miberal powder consumption and the flyash that can calculate our needs
The content of the concrete components such as consumption, and then obtain the match ratio of alkali-activated carbonatite concrete.(above-mentioned 28d refers to 28 days)
Alkali-activated carbonatite regeneration concrete preparation is carried out finally according to gained match ratio, is conserved under standard conditions to 28 days, tested
Its compression strength average value, and the contrast of target compression strength are obtained, sees whether meet target strength requirement, such as met, then selected
The match ratio；Such as it is unsatisfactory for, then adjustment slurry bone ratio and/or sand coarse aggregate ratio concrete numerical value are calculated again, swashs until obtaining suitable alkali
Hair regeneration concrete match ratio.
It in Binder Materials is leading with miberal powder that this method is, is inside mixed under the conditions of 10% flyash according to each component relation, because
This alkali-activated carbonatite regeneration concrete match ratio obtained using the method, flyash will equally keep 10% in its gelling raw material
Volume, finally gives the alkali-activated carbonatite regeneration concrete match ratio for meeting intensity requirement.
Specific case is as follows：
Mixing proportion design method proposed by the present invention is designed to alkali-activated carbonatite regeneration concrete, it is desirable to：Target resistance to compression
Intensity reaches fcu,k=50MPa, construction workability is good.Specific design step is as follows：
(1) alkali glue ratio is primarily determined that first.According to intensity index and design of common concrete proportioning method JGJ55-
2011《Design of common concrete proportioning code》Requirement, the combination property initial option alkali glue such as target compression strength compares A/B
=0.24.
(2) according to alkali glue than A/B, corresponding regression coefficient can be obtained, compression strength and water-solid ratio relational expression can be specified.
Than A/B=0.24, table look-up 2 can obtain alkali glue, and corresponding regression coefficient is αa=0.2227, αb=-1.5245.Additionally, according to table 3
Alkali glue ratio can be obtained under the conditions of 0.24, glue sand 28d compression strength fb=58.2MPa.
(3) according to preparation target, target compression strength fcu,k=50MPa, according to the result of table 1, when target strength is located at
During 45Mpa~65Mpa, target strength standard deviation value can use σk=4.0Mpa, and thus obtain the trial strength f of concretecu,0
=fcu,k+ 1.645 σ=50+1.645*4.0=56.58MPa.
And by fcu,0, fb, αa、αbConcrete numerical value substitutes into formulaAnd solve, water-solid ratio can be obtained
W/GPS=0.352.
(4) table look-up and 3 take bonding component consumption=600+66=666kg/m3On the basis of be worth, by early stage preliminary experiment, then root
It is 0.45 according to service behaviour and intensity requirement the selection sand coarse aggregate ratio of alkali-activated carbonatite regeneration concrete, slurry bone mass compares 0.99, calculates each group
The content divided, specific calculating process is as follows,
The first step, calculates waterglass content, bonding component consumption * alkali glue ratio=aqueous slkali * alkali mass fraction of solids, this examination
Test the waterglass that selection modulus is 1.95, wherein Na2O mass fractions are 14.26%, S iO2Mass fraction is 26.92%, so
The alkali mass fraction of solids of waterglass takes 41.18%, and substitution can be obtained：
666*0.24=aqueous slkalis * 0.412,
It is calculated aqueous slkali (waterglass)=387.96kg/m3。
Second step, calculates extra water content, aqueous slkali * (1- alkali mass fraction of solids)+additional water=(bonding component consumption
+ aqueous slkali * alkali mass fraction of solids) * water-solid ratios, substitute into main constituent concrete numerical value and obtain：
387.96* (1-0.412)+additional water=(666+387.96*0.412) * 0.352,
It is calculated additional water=62.57kg/m.
3rd step, calculates fine aggregate and regenerated coarse aggregate sum total, (bonding component consumption+aqueous slkali+additional water) * slurry sclerotin
Amount ratio=regenerated coarse aggregate+fine aggregate, substitutes into related component concrete numerical value：
(666+387.96+62.57) * 0.99=regenerated coarse aggregates+fine aggregate, thus calculate regeneration aggregate+fine aggregate total
=1127.81kg/m3。
4th step, calculates fine aggregate, fine aggregate=(regenerated coarse aggregate+fine aggregate) * sand coarse aggregate ratios；Fine aggregate=1127.81*
0.45=507.51kg/m3, wherein fine aggregate is natural sand.
5th step, calculates regenerated coarse aggregate, and regenerated coarse aggregate=(regenerated coarse aggregate+fine aggregate)-fine aggregate is substituted into related
Component concrete numerical value, is calculated regenerated coarse aggregate=1127.81-507.51=620.30kg/m3。
6th step, calculates miberal powder consumption, and miberal powder consumption=bonding component consumption * 90% substitutes into the specific number of related component
Value, is calculated, miberal powder consumption=666*0.9=599.4kg/m3。
7th step：Flyash consumption is calculated, flyash consumption=bonding component consumption-miberal powder consumption substitutes into related component
Specific data, are calculated, flyash consumption=666-599.4=66.6kg/m3。
Finally, the suitable specific match ratio of alkali-activated carbonatite regeneration concrete is obtained, as shown in table 4：
Table 450MPa alkali-activated carbonatite regeneration concrete match ratios
(5) alkali-activated carbonatite regeneration concrete preparation is carried out according to (4) gained match ratio, fresh concrete slump is 172mm,
There is not isolation or excreting water phenomenon, construction workability is good.Conserved under standard conditions to 28 days, its compression strength is obtained after tested
Average value is 53.1MPa, meets and requires.
(6) by matched somebody with somebody using aggregate water absorption rate, level, the feature such as crush index has a direct impact to concrete performance,
Therefore coherent detection must be carried out to raw material before carrying out mix-design.
The beneficial effects of the invention are as follows：Replace the alkali-activated carbonatite coagulation of natural aggregate using regeneration aggregates such as building castoffs
Soil, not only expands the use scope of alkali-activated carbonatite concrete, also fully causes the recycling of waste resource, is conducive to environment to protect
Shield；Obtain being applicable the computation model of alkali-activated carbonatite regeneration concrete by using water-solid ratio, and establish Different Alkali glue than lower correspondence
Regression coefficient and 28d glue sand compression strength, it is final to calculate that to meet alkali-activated carbonatite regeneration concrete strong than method using slurry bone mass
The each component content of degree, finally gives alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method, according between concrete each component
Actual mass relation is calculated, and obtains that match ratio is more accurate, and its scope of application is wider.
The invention allows for a kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete system, including：
Unit 1 is set up in standard deviation data storehouse, for according to formulaIt is calculated alkali-activated carbonatite
The different compression strength f of regeneration concretecuCorresponding tension variance σ, and by compression strength fcuNumerical value and corresponding strong
Degree standard deviation sigma is corresponded and is stored as standard deviation data storehouse.
Target component unit 2, for the performance requirement according to application scenarios, determines the mesh of target alkali-activated carbonatite regeneration concrete
Mark compression strength fcu,k, and suitable alkali glue is selected than A/B and tension variance σk；
Trial strength computing unit 3, for according to fcu,0≥fCu, k+1.645σk, obtain fCu, 0Concrete numerical value, wherein fcu,0
It is the trial strength of alkali-activated carbonatite regeneration concrete；
Water-solid ratio computing unit 4, for, than A/B, obtaining corresponding regression coefficient α according to alkali gluea、αbWith glue sand 28d resistance to compressions
Intensity fbValue, further according to alkali glue than A/B, trial strength fCu, 0, regression coefficient αa、αbWith glue sand 28d compression strength fb, calculate
To water-solid ratio W/GPS；
Mix calculation unit 5, for using slurry than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio according to alkali glue
Bone mass is calculated the content of each component in alkali-activated carbonatite regeneration concrete than method.
Unit 1 is set up in standard deviation data storehouse, different anti-for being calculated by above-mentioned tension variance σ computing formula
Compressive Strength fcuCorresponding tension variance σ, and according to tension variance σ in table one and compression strength fcuOne-to-one form
Data form is recorded as, above-mentioned standard deviation data storehouse is in the present embodiment table 1.
Wherein, target component unit 2, includes target component module 201, for being determined according to practical application scene
The target compression strength f of concreteCu, kAfterwards, according to intensity index and design of common concrete proportioning method JGJ55-2011
《Design of common concrete proportioning code》Requirement determine that alkali glue compares A/B；In addition by target compression strength fCu, kResist with table 1
Compressive Strength fcuData Comparison, finds and target compression strength fCu, kNumerical value identical compression strength fcu, and select compression strength fcu
Corresponding tension variance σ numerical value is used as tension variance σkNumerical value, to carry out the calculating of next step.
Wherein, water-solid ratio computing unit 4, includes water-solid ratio computing module 401, for by formulaIt is calculated water-solid ratio W/GPS.Water-solid ratio, is the ratio of water and solid material.
Wherein, mix calculation unit 5 includes mix calculation module 501, for being carried out using following relational equation
Calculate：
Bonding component consumption * alkali glue ratio=aqueous slkali * alkali mass fraction of solids；
Aqueous slkali * (1- alkali mass fraction of solids)+additional water=(bonding component consumption+aqueous slkali * alkali solid masses point
Number) * water-solid ratios；
(bonding component consumption+aqueous slkali+additional water) * slurry bone mass ratio=regenerated coarse aggregate+fine aggregate；
Fine aggregate=(regenerated coarse aggregate+fine aggregate) * sand coarse aggregate ratios；
Regenerated coarse aggregate=(regenerated coarse aggregate+fine aggregate)-fine aggregate；
Miberal powder consumption=bonding component consumption * 90%；
Flyash consumption=bonding component consumption-miberal powder consumption.
Replace the alkali-activated carbonatite concrete of natural aggregate using regeneration aggregates such as building castoffs, not only expand alkali-activated carbonatite and mix
The use scope of soil is coagulated, the recycling of waste resource is also fully caused, is conducive to environmental protection；Obtained by using water-solid ratio
It is applicable the computation model of alkali-activated carbonatite regeneration concrete, and it is anti-to establish corresponding regression coefficient and 28d glue sand under Different Alkali glue ratio
Compressive Strength, it is final that each component content for meeting alkali-activated carbonatite recycled concrete strength is calculated than method using slurry bone mass, it is final to obtain
To alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method, calculated according to the actual mass relation between concrete each component,
Obtain match ratio more accurate, its scope of application is wider.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the invention, every utilization is not thereby limited
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be included within the scope of the present invention.
Claims (10)
1. a kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method, it is characterised in that comprise the following steps：
According to the performance requirement of application scenarios, the target compression strength f of target alkali-activated carbonatite regeneration concrete is determinedcu,k, and it is selected suitable
The alkali glue of conjunction is than A/B and tension variance σk；
According to fcu,0≥fcu,k+1.645σk, obtain fcu,0Concrete numerical value, wherein fcu,0For the trial of alkali-activated carbonatite regeneration concrete is strong
Degree；
According to alkali glue than A/B, corresponding regression coefficient α is obtaineda、αbWith glue sand 28d compression strength fbValue, further according to alkali glue ratio
A/B, trial strength fcu,0, regression coefficient αa、αbWith glue sand 28d compression strength fb, it is calculated water-solid ratio W/GPS；
According to alkali glue than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio, and using slurry bone mass than method be calculated alkali swash
The content of each component in hair regeneration concrete.
2. alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method as claimed in claim 1, it is characterised in that the basis is specific
The performance requirement of application scenarios, determines the target compression strength f of alkali-activated carbonatite regeneration concretecu,k, and select suitable alkali glue ratio
A/B and tension variance σkBefore step, including：
According to formulaIt is calculated the different compression strength f of alkali-activated carbonatite regeneration concretecuCorrespondence
Tension variance σ, and by compression strength fcuNumerical value and corresponding tension variance σ are corresponded and are stored as standard difference
According to storehouse.
3. alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method as claimed in claim 2, it is characterised in that the basis is specific
The performance requirement of application scenarios, determines the target compression strength f of alkali-activated carbonatite regeneration concretecu,k, and select suitable alkali glue ratio
A/B and tension variance σkStep, including：
By target compression strength fcu,kWith compression strength f in standard deviation data storehousecuData are matched, and find target compression strength
fCu, kThe corresponding target strength standard deviation sigma of numerical valuekNumerical value.
4. alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method as claimed in claim 1, it is characterised in that described according to alkali glue
Than A/B, corresponding regression coefficient α is obtaineda、αbWith glue sand 28d compression strength fbValue, further according to alkali glue than A/B, trial strength
fcu,0, regression coefficient αa、αbWith glue sand 28d compression strength fb, water-solid ratio W/GPS is calculated, including：
By formulaIt is calculated water-solid ratio W/GPS.
5. alkali-activated carbonatite mixture ratio design of recycled aggregate concrete method as claimed in claim 1, it is characterised in that described according to alkali glue
It is calculated in alkali-activated carbonatite regeneration concrete than method using slurry bone mass than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio
The content step of each component, including,
Calculated using following relational equation：
Bonding component consumption * alkali glue ratio=aqueous slkali * alkali mass fraction of solids；
Aqueous slkali * (1- alkali mass fraction of solids)+additional water=(bonding component consumption+aqueous slkali * alkali mass fraction of solids) * water
Gu ratio；
(bonding component consumption+aqueous slkali+additional water) * slurry bone mass ratio=regenerated coarse aggregate+fine aggregate；
Fine aggregate=(regenerated coarse aggregate+fine aggregate) * sand coarse aggregate ratios；
Regenerated coarse aggregate=(regenerated coarse aggregate+fine aggregate)-fine aggregate；
Miberal powder consumption=bonding component consumption * 90%；
Flyash consumption=bonding component consumption-miberal powder consumption.
6. a kind of alkali-activated carbonatite mixture ratio design of recycled aggregate concrete system, it is characterised in that including：
Target component unit, for the performance requirement according to application scenarios, determines that the target of target alkali-activated carbonatite regeneration concrete resists
Compressive Strength fcu,k, and suitable alkali glue is selected than A/B and tension variance σk；
Trial strength computing unit, for according to fcu,0≥fcu,k+1.645σk, obtain fcu,0Concrete numerical value, wherein fcu,0For alkali swashs
Send out the trial strength of regeneration concrete；
Water-solid ratio computing unit, for, than A/B, obtaining corresponding regression coefficient α according to alkali gluea、αbWith glue sand 28d compression strength
fbValue, further according to alkali glue than A/B, trial strength fcu,0, regression coefficient αa、αbWith glue sand 28d compression strength fb, it is calculated water
Admittedly compare W/GPS；
Mix calculation unit, for using slurry bone mass than A/B, water-solid ratio W/GPS, slurry bone mass ratio and sand coarse aggregate ratio according to alkali glue
Than the content that method is calculated each component in alkali-activated carbonatite regeneration concrete.
7. alkali-activated carbonatite mixture ratio design of recycled aggregate concrete system as claimed in claim 6, it is characterised in that also include standard
Unit is set up in difference data storehouse, for according to formulaIt is calculated alkali-activated carbonatite regeneration concrete not
Same compression strength fcuCorresponding tension variance σ, and by compression strength fcuNumerical value and corresponding tension variance σ mono-
One correspondence is stored as standard deviation data storehouse.
8. alkali-activated carbonatite mixture ratio design of recycled aggregate concrete system as claimed in claim 7, it is characterised in that the target component
Unit, includes target component module, for by target compression strength fcu,kWith compression strength f in standard deviation data storehousecuData
Matched, found target compression strength fCu, kThe corresponding target strength standard deviation sigma of numerical valuekNumerical value.
9. alkali-activated carbonatite mixture ratio design of recycled aggregate concrete system as claimed in claim 6, it is characterised in that the water-solid ratio meter
Unit is calculated, water-solid ratio W/GPS computing modules is included, for by formulaWater is calculated to consolidate
Compare W/GPS.
10. alkali-activated carbonatite mixture ratio design of recycled aggregate concrete system as claimed in claim 6, it is characterised in that the match ratio
Computing unit includes mix calculation module, for being calculated using following relational equation：
Bonding component consumption * alkali glue ratio=aqueous slkali * alkali mass fraction of solids；
Aqueous slkali * (1- alkali mass fraction of solids)+additional water=(bonding component consumption+aqueous slkali * alkali mass fraction of solids) * water
Gu ratio；
(bonding component consumption+aqueous slkali+additional water) * slurry bone mass ratio=regenerated coarse aggregate+fine aggregate；
Fine aggregate=(regenerated coarse aggregate+fine aggregate) * sand coarse aggregate ratios；
Regenerated coarse aggregate=(regenerated coarse aggregate+fine aggregate)-fine aggregate；
Miberal powder consumption=bonding component consumption * 90%；
Flyash consumption=bonding component consumption-miberal powder consumption.
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| CN112185485B (en) * | 2020-09-24 | 2023-07-07 | 广西大学 | Design method for mixing proportion of space two-phase concrete |
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| CN113742816B (en) * | 2021-08-05 | 2023-08-11 | 广西大学 | Alkali-activated bagasse ash/slag low-carbon mortar mixing proportion design method based on strength regulation and control |
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| CN115650645B (en) * | 2022-11-01 | 2023-08-01 | 中国建筑第六工程局有限公司 | Method for designing mixing ratio of fly ash-slag powder base polymer concrete |
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Application publication date: 20170531 Assignee: Foshan Fengfeng Technology Co.,Ltd. Assignor: SHENZHEN University Contract record no.: X2023980048031 Denomination of invention: Design method and system for alkali activated recycled concrete mix proportion Granted publication date: 20200728 License type: Common License Record date: 20231123 |
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