CN107445527A - A kind of method for reducing concrete permeability and water imbibition - Google Patents

A kind of method for reducing concrete permeability and water imbibition Download PDF

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CN107445527A
CN107445527A CN201710813364.5A CN201710813364A CN107445527A CN 107445527 A CN107445527 A CN 107445527A CN 201710813364 A CN201710813364 A CN 201710813364A CN 107445527 A CN107445527 A CN 107445527A
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concrete
agstone
parts
water
cement
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陈嘉健
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Foshan University
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Foshan University
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/26—Carbonates
    • C04B14/28—Carbonates of calcium
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The present invention relates to a kind of method for reducing concrete permeability and water imbibition, agstone of the incorporation as cement mortar substitute wherein into concrete, admixture agstone displacement cement mortar can reduce the permeable hole of concrete, and the seepage of water and water imbibition of concrete are effectively reduced under the identical ratio of mud or under same intensity.

Description

A kind of method for reducing concrete permeability and water imbibition
Technical field
The invention belongs to building field, is related to a kind of method mixed agstone and reduce concrete permeability and water imbibition.
Background technology
At present, filling agstone and improving concrete performance and reduce the way of cost is known to prior art, main To be displacement cement or displacement fine aggregate, the former can influence intensity, and the latter's main function is only to solve fine aggregate shortage problem.
Shanxi Prov. Inst. of Traffic Sciences Deng Liang is bright, and (the bright super-fine limestone powders volumes of Deng Liang are to moderate strength grade coagulation Influence [J] concrete of soil nature energy, 2014 (8):101-103+106) conclude in water consumption under the same conditions, incorporation is super It is little that microlith limestone flour substitutes part of cement to influence mechanical performance of concrete, and under the requirement of the identical slump, can be by mixing Enter agstone so that the mode that water consumption reduces improves concrete performance.(Jia Fuping, the poplars such as China Mining University Jia Fu duckweeds Ke Hong, Shang Yonghao, Wang Hong, the Wu Wei people agstones factor analysis of agent on crack resistance of concrete carbonation properties [J] concrete, 2015 (7): 61-62+70) experiment shows, agstone displacement cement can weaken the carbonization resistance ability of concrete.Inner Mongol University of Technology is suddenly (influence [J] the coagulations of Huo Junfang, Song Maoxiang, Tong Zhen, Cui Qi, Pan Hua the agstones admixture to concrete performance such as pretty virtue Soil, 2015 (5):70-72.) thinking, when agstone blending amount is not more than 15%, anti-freezing property is higher than normal concrete, but With the further raising of agstone, anti-freezing property is deteriorated.Handan Jinyu Taihang cement company king marches (Wang Jinjun lime Stone chip makees application [J] the concrete world of the fine aggregate in concrete, 2013 (8) with ultra fine sand:70-72) point out, lime Stone flour displacement natural sand is solution fine aggregate good method in short supply and can meet concrete durability requirement.
In the application of agstone, most of scholar and engineering staff are using agstone displacement cement, and fraction is then Fine aggregate is replaced using agstone.The former can reduce clinker consumption and the heat of hydration, but meeting using agstone method Intensity, especially later strength are reduced, generally requiring in practical application to turn down the ratio of mud is compensated intensity, to impervious etc. resistance to Long property performance brings more complicated influence.Due to for heightening durability, the worry of intensity effect that the ratio of mud is led to, engineering people Member is often unwilling use agstone direct replacement cement, admixture agstone displacement cement perhaps simultaneously non-optimal usage lime The method of stone flour.The latter applies agstone method, there is no or almost no adverse effect, to there is scholar's research to concrete strength Show to additionally aid reduction concrete shrinkage using agstone displacement aggregate, reduce water penetration.However, the method is helpless to drop The clinker consumption of low concrete, only solve the method for fine aggregate shortage problem, but improvement coagulation soil nature can not be used as Method (the bibliography of energy and industry sustainability：Bright sun, Wang Jun, Chen Jing, Zhang Kaifeng, Tang Kai zeolite powders-agstone mix Coagulate experimental study [J] the concrete and cement products of soil, 2012 (12):20-23；Poppe AM,De Schutter G.Cement hydration in the presence of high filler contents[J].Cem Con Res 2005；35(12):2290-2299；Nehdi M,Mindess S,PC.Optimization of high strength limestone filler cement mortars[J].Cem Con Res 1996；26(6):883-893； Bentz DP,Irassar EF,Bucher BE,Weiss WJ.Limestone fillers conserve cement；Part 1:An analysis based on Powers’model[J].Concrete International 2009；31(11):41- 46；Tsivilis S,Tsantilas J,Kakali G,Chaniotakis E,Sakellariou A.The permeability of Portland limestone cement concrete[J].Cem Con Res 2003；33(9): 1465-1471；Kenai S,Menadi B,Attar A,Khatib J.Effect of crushed limestone fines on strength of mortar and durability of concrete[C],Proceedings,International Conference on Construction and Building Technology(ICCBT),Kuala Lumpur, Malaysia,2008,205-216；Aquino C,Inoue M,Miura H,Mizuta M,Okamoto T.The effects of limestone aggregate on concrete properties[J].Constr Build Mater 2010；24 (12):2363-2368；Menadi B,Kenai S,Khatib J,A.Strength and durability of concrete incorporating crushed limestone sand[J].Constr Build Mater 2009；23(2):625-633.).
Chinese patent application CN105948653A discloses a kind of regeneration wet mixing mortar and preparation method thereof, by following weight The component composition of part：The parts by weight of cement 180~260, the parts by weight of agstone slurry 130~240 of moisture content 30%~60%, The parts by weight of recycled fine aggregate 380~650, the parts by weight of nature medium sand 650~900, the parts by weight of water-retaining admixture 2.7~3.9, condense The parts by weight of time adjustment agent 0~3.0, the parts by weight of water 120~210.It uses stirring advance with stone flour slurry and special additive Technical method, solve the problems such as recycled fine aggregate water imbibition is high, workability loss is fast, intensity decreases.
Chinese patent application CN106396525A discloses a kind of pump concrete for mixing agstone, the concrete by Following material is matched according to corresponding mass percentage：Cement 6.0%~17.0%, flyash 0%~1.2%, lime stone Powder 1.5%~4.0%, miberal powder 0.5%~3.5%, river sand 25%~35%, rubble 40%~50%, water 6.0%~7.0%, Additive 0.2%~0.7%.It is by selecting the agstone of suitable volume to replace the mineral such as high-quality fly ash, slag to admix Material, gives full play to nucleus effect, chemism effect and diminishing effect, improves the intensity, workability and durability of concrete Energy；And agstone substitutes flyash under suitable dosage, the production cost of concrete can be significantly reduced.
Chinese patent application CN106316253A discloses a kind of application of agstone in concrete, including 28 days resist Ultra-fine limestone that cement that Compressive Strength is 52.2MPa, density are 2.72g/cm3, sand, 2mm-20mm rubbles coarse aggregate, 5mm-20mm peastone, flyash and high performance water reducing agent of polyocarboxy acid.Application of the agstone of the present invention in concrete is led to Cross after mixing thin agstone, because agstone has good filing effect, make slurry more fine and close, reduce mortar Porosity, reduce macropore ratio, improve distribution of pores, so as to improve the early strength of concrete.
It can be seen that agstone fills usage predominantly displacement cement or displacement fine aggregate, Qian Zhehui in concrete at present Intensity is influenceed, the latter's main function is only to solve fine aggregate shortage problem.
However, because the space between aggregate particle must be completely filled with cement mortar, otherwise air can be in coagulation It is present in during native mix stirring in fresh concrete and causes intensity and durability to reduce.Agstone is a kind of inert solid, Filler can be served as to increase cement mortar, mortar or Concrete Filled density.Compared to above two agstone in coagulation Application process in soil material, more reasonably application process are for the space between fill concrete particles of aggregates, make lime Stone flour and cement mortar are mixed into slurry and come space between filler aggregate, to reduce the cement slurry volume for needing filler aggregate space, so as to Improve durability.
At present, it there is no agstone and replace cement mortar to the endurance quality such as concrete permeability resistance, water imbibition influence side The systematic Study in face.The present inventor expands the experiment of system, explores agstone and replaces cement mortar application process to coagulation The influence of native durability.
The content of the invention
The present invention has inquired into influence of the agstone displacement cement paste-making method to concrete permeability and water imbibition, prepares Series of concrete sample makees intensity, seepage of water, water imbibition and porosity test.As a result show, admixture agstone displacement water Mud can reduce the permeable hole of concrete, under the identical ratio of mud or under same intensity effectively reduce concrete seepage of water and Water imbibition.
Therefore, the purpose of the present invention is a kind of method for reducing concrete permeability and water imbibition of offer, wherein, to coagulation Agstone of the incorporation as cement mortar substitute in soil, each raw material of the concrete and its parts by weight are as follows,
Coarse aggregate, 600-800 parts
Fine aggregate, 900-1100 parts
Cement, 200-450 parts
Agstone, 100-300 parts
Water reducer, 10-400 parts
Water, 100-250 parts.
Wherein, the ratio of mud for controlling the concrete is 0.3-0.8；Grout volume percentage is 22-34%, lime stone Powder percent by volume is 2-12%, and slurry percent by volume sum (i.e. grout volume percentage and agstone volume hundred Point than sum) control is 32-36%.Wherein, agstone is the substitute of cement mortar, rather than the substitute of cement.
Preferably, each raw material of the concrete and its parts by weight are as follows,
Coarse aggregate, 650-750 parts
Fine aggregate, 950-1050 parts
Cement, 225-415 parts
Agstone, 105-265 parts
Water reducer, 20-300 parts
Water, 120-220 parts.
Wherein, the ratio of mud for controlling the concrete is 0.4-0.7；Grout volume percentage is 22-34%, lime stone Powder percent by volume is 2-12%, and slurry percent by volume sum (i.e. grout volume percentage and agstone volume hundred Point than sum) control is 32-36%.Wherein, agstone is the substitute of cement mortar, rather than the substitute of cement.
Most preferably, each raw material of the concrete and its parts by weight are as follows,
Coarse aggregate, 672 parts
Fine aggregate, 1008 parts
Cement, 235-415 parts
Agstone, 106-265 parts
Water reducer, 50-200 parts
Water, 133-206 parts.
Wherein, the ratio of mud for controlling the concrete is 0.4-0.7；Grout volume percentage is 24-30%, lime stone Powder percent by volume is 4-10%, and slurry percent by volume sum (i.e. grout volume percentage and agstone volume hundred Divide than sum) control as 34%.Wherein, agstone is the substitute of cement mortar, rather than the substitute of cement.
In method of the present invention, wherein,
The coarse aggregate is selected from one or both of rubble, cobble, and its largest particles particle diameter is no more than 20mm；Its density For 2.5-2.8g/cm3, preferably 2.55-2.70g/cm3, more preferably 2.61g/cm3；Its water absorption rate is 0.80-1.20%, excellent Elect 0.95-1.05%, more preferably 1.01% as.
The fine aggregate is selected from one or both of natural sand, artificial sand, and its largest particles particle diameter is no more than 5mm；Its Density is 2.3-2.6g/cm3, preferably 2.45-2.6g/cm3, more preferably 2.52g/cm3；Its water absorption rate is 1.60- 2.00%, preferably 1.75-1.95%, more preferably 1.89%.
The cement is the cement marked as 32.5N, 42.5N or 52.5N, the preferably cement marked as 52.5N；It is average Particle diameter is 10-12 μm, preferably 10.5-11.8 μm, more preferably 11.4 μm；Its density is 3-3.5g/cm3, preferably 3.05- 3.25g/cm3, more preferably 3.11g/cm3。
The Average Particle Diameters of the agstone are 12-16 μm, preferably 13.5-15 μm, more preferably 14.5 μm；Its Density is 2.4-2.8g/cm3, preferably 2.60-2.72g/cm3, more preferably 2.64g/cm3。
The water reducer is polycarboxylate water-reducer, and it is filled to slump in the form of aqua reaches more than 200mm, and it is added Amount increases with the increase of agstone volume.
Beneficial effects of the present invention：
Agstone is mainly used in replacing cement for a long time or replaces fine aggregate, and the present invention is proposed using agstone Replace the method for cement mortar and inquire into influence of this application process to concrete permeability and water imbibition.Obtained according to experimental result Go out to draw a conclusion：
(1) under the identical ratio of mud, admixture agstone displacement cement mortar can effectively reduce seepage of water and the suction of concrete It is water-based；
(2) under same intensity requirement, admixture agstone displacement cement mortar can substantially reduce the infiltration depth of concrete And absorption coerfficient；
(3) the permeable hole of concrete can be reduced by filling agstone displacement cement mortar；
(4) depth that seeps water and absorption coerfficient are related to permeable hole highly linear.What is obtained after incorporation lime stone oozes The reduction of water depth and absorption coerfficient is attributable to permeable hole caused by filling agstone and reduced.
Brief description of the drawings
Fig. 1：The depth that seeps water is with ratio of mud situation of change
Fig. 2：The depth that seeps water and cube strength relation
Fig. 3 (a)：The concrete sample unit area water percolating capacity of the ratio of mud=0.4 is with time square root situation of change
Fig. 3 (b)：The concrete sample unit area water percolating capacity of the ratio of mud=0.5 is with time square root situation of change
Fig. 3 (c)：The concrete sample unit area water percolating capacity of the ratio of mud=0.6 is with time square root situation of change
Fig. 3 (d)：The concrete sample unit area water percolating capacity of the ratio of mud=0.7 is with time square root situation of change
Fig. 4：Absorption coerfficient is with ratio of mud situation of change
Fig. 5：Absorption coerfficient and cube strength relation
Fig. 6：Permeable hole is with ratio of mud situation of change
Fig. 7：The depth that seeps water and permeable hole relation
Fig. 8：Absorption coerfficient and permeable hole relation
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, the embodiment It is only used for explaining the present invention, is not intended to limit the scope of the present invention..
(1) concrete proportioning is tested
Material therefor and indices are as follows：
Cement：Using 52.5N cement, experiment measures 28 days intensity of the cement and is measured as 59.0MPa, density 3.11g/ cm3, the Average Particle Diameters that cement is measured by laser particle size analyzer are 11.4 μm.
The density of agstone is 2.64g/cm3.The average grain diameter that agstone is measured by laser particle size analyzer is big Small is 14.5 μm.
Coarse aggregate is rubble, the largest particles 20mm, density 2.61g/cm3, water absorption rate 1.01%.
Fine aggregate is artificial sand, the largest particles 5mm, density 2.52g/cm3, water absorption rate 1.89%.
Water reducer is polycarboxylate water-reducer.
Prepare the different concrete proportioning test specimen of 16 groups of ratio of muds, lime stone volume altogether to test, specific proportioning is listed in table 1.Each concrete proportioning is named in the form of LF-A-B, and wherein LF represents agstone concrete, and A represents the ratio of mud, and B represents stone Limestone flour accounts for volume of concrete ratio.The slurry percent by volume of all concrete proportionings is fixed as 34%, coarse-fine aggregate amount difference It is fixed as 672 and 1008kg/m3.When filling agstone, cement slurry volume reduces, lime with the increase of agstone amount Stone flour is the substitute of cement mortar rather than the substitute of cement.Water reducer filled in the form of aqua to the slump reach 200mm with On.
Table 1 tests concrete proportioning
(2) performance test
(1) ionization meter
Strength of concrete specimen measurement uses 150mm test specimens, and curing temperature is 27 ± 2 DEG C, and age is 28 days.Intensity results Using the average value of three same period synchronism detection test specimens.28 day age cube strength of concrete sample is listed in the last of table 2 One row.
Intensity results show, under the identical ratio of mud, admixture agstone displacement cement mortar dramatically increases concrete 28 day age compression strength.The intensity that admixture agstone is brought improves, and is on the one hand due to powder granule after incorporation lime stone Amount increase, can form more particulate cores as hydrated cementitious attachment, improve Among Cement Hydration Degree；On the other hand it is due to stone The incorporation of limestone flour reduces concrete water bleeding amount, enhances aggregate-cement mortar transitional region.
(2) permeability measures
Each group of concrete proportioning makees permeability measurement with penetration depth.Concrete sample conserves in 27 ± 2 DEG C of environment To 28 day age, apply 500 ± 50kPa water pressures and put on test specimen bottom 72 hours.Thereafter, test specimen from tester Take out, applying line load makes test specimen splitting be two halves, and its penetration depth is measured according to washmarking.To ensure the accuracy of result, ooze Saturating depth results use the average value of three same period synchronism detection test specimens.Measurement result is shown in Table 2 the 2nd row, its pass with the ratio of mud System is illustrated in Fig. 1.
As a result show, under the identical ratio of mud, permeability is substantially reduced with the increase of agstone volume, and this is imitated Fruit becomes apparent under high water-cement ratio.As can be seen here, permeability can be reduced to the ratio of mud by filling agstone displacement cement mortar Susceptibility.
In addition, admixture agstone displacement cement not only reduces penetration depth without changing the ratio of mud, also increase coagulation The intensity of soil.Infiltrative effect is reduced under same intensity to disclose admixture agstone, penetration depth and 28 days intensity Relation is shown in Fig. 2.As a result show, admixture agstone displacement cement mortar can effectively reduce concrete under same intensity requirement Permeability.
(3) water imbibition measures
Each group of concrete proportioning makees water imbibition measurement with absorption coerfficient, and method of testing refers to following documents：American Society for Testing and Materials.ASTM C1585-04:Standard test method for measurement of rate of absorption of water by hydraulic-cement concretes[S] .ASTM International,USA；2004.Specifically method of testing is：Concrete sample is conserved to 28 in 27 ± 2 DEG C of environment After its age, it is placed in 100 DEG C of baking ovens and dries 3 days, be then cooled to room temperature.Before water imbibition test, concrete sample four Week is sealed with epoxy resin, and shallow be dipped in water makes examination bottom be contacted with water.Thereafter the quality of test specimen is surveyed in different periods Amount, cause the increased quality (m of test specimen according to due to water suctiona), per unit surface area water suction volume can be obtained by formula (1).
Wherein A is the area that surface is contacted with water, and ρ is the density of water.
Test result shows that the water absorption that unit is accumulated with water engaging surface can increase with the time, shown in relational expression such as formula (2).
Wherein k is the absorption coerfficient of concrete sample, and t is time square root.
It is ordinate I to determine absorption coerfficient k, t square roots are that abscissa makees regression analysis, and slope is then water suction system Number k.
Per unit contact area water absorption rate is shown in Fig. 3 (a)-(d) with time subduplicate situation of change.Can from figure Go out, per unit contact area water absorption rate and time square root are linear.Per unit contact area water absorption rate-time square root straight line Slope be absorption coerfficient k in formula (2), obtained absorption coerfficient is listed in the 3rd row of table 2, its with the ratio of mud change feelings Condition is shown in Fig. 4.
As a result clearly demonstrate that, the admixture of agstone significantly reduces absorption coerfficient, it is seen that admixture agstone displacement water Mud can stably improve the impermeability of concrete.Thus may determine that when filling agstone displacement cement mortar, filling effect Hole and the space of concrete should be reduced, this is the main reason for permeability and water imbibition reduce.
In addition, test result indicates that, in the case of the ratio of mud is not changed, agstone displacement cement mortar can not only be reduced Absorption coerfficient, and the intensity of concrete can be increased.Fig. 5 is shown fills agstone displacement cement under same intensity requirement Slurry reduces the effect of absorption coerfficient, the results showed that, admixture agstone can significantly reduce concrete under same intensity requirement Absorption coerfficient.
(4) permeable hole measurement
From above-mentioned experimental results and analysis, admixture agstone displacement cement mortar can substantially reduce permeability with Water imbibition.In order to verify whether permeability and reducing for water imbibition are due to that the hole that agstone filing effect is led to reduces institute Cause, the permeable space measurement of concrete proportioning test specimen has been made in this research.Three 100mm cubes are made per concrete proportioning Test specimen, after 28 day age, each test specimen is heated to constant weight in high temperature furnace, is then dipped in water and heats to boil water, finally soaks Apparent weight in Yu Shuizhong measurement water.The permeable hole that this method obtains is the pore volume that can be filled by water, is expressed as coagulation The percentage of soil body product.
Permeable hole result is listed in the row of table 2 the 4th.Each result is the average of three parallel test specimen test results.For More preferable displaying result, permeable pore volume and the relation of the ratio of mud in the case of 0%, 4%, 8% and 10% agstone volume It is shown in Fig. 6.As a result show, under the identical ratio of mud, permeable hole reduces with the increase of agstone addition content, enters One step demonstrates agstone and is filled with concrete mesopore so as to reduce the voidage of concrete.
The seepage of water of table 2, water imbibition, permeable space and intensity measurements
In addition, the present invention is investigated the permeable hole of concrete to infiltrative influence, permeable hole and permeability Relation be shown in Fig. 7.Linear regression analysis obtains the incidence coefficient R of permeated height and permeable coefficient2Up to 0.8867, it was demonstrated that Permeable aperture height determines concrete permeability energy.
Similarly, the present invention is investigated influence of the permeable hole to water imbibition, absorption coerfficient and permeable hole Relation is shown in Fig. 8.Regression analysis obtains absorption coerfficient and linear relationship be present with permeable hole, its incidence coefficient R2For 0.9095, it was demonstrated that permeable aperture height determines concrete water absorbing properties.
These results indicate that penetration depth and absorption coerfficient and permeable hole highlights correlations, admixture agstone displacement The main reason for cement mortar reduction permeability and water imbibition, is reduced permeable hole for fill concrete mesopore.
Although being made that detailed description to the present invention, and some instantiations are listed, to people in the art For member, without departing from the spirit of the present invention, the various adjustment done to this method are regarded as the model included in the present invention In enclosing.

Claims (10)

  1. A kind of 1. method for reducing concrete permeability and water imbibition, it is characterised in that incorporation is used as cement mortar into concrete The agstone of substitute, each raw material of the concrete and its parts by weight are as follows,
    Coarse aggregate, 600-800 parts
    Fine aggregate, 900-1100 parts
    Cement, 200-450 parts
    Agstone, 100-300 parts
    Water reducer, 10-400 parts
    Water, 100-250 parts.
  2. 2. the method according to claim 1, it is characterised in that each raw material and its parts by weight are as follows,
    Coarse aggregate, 650-750 parts
    Fine aggregate, 950-1050 parts
    Cement, 225-415 parts
    Agstone, 105-265 parts
    Water reducer, 20-300 parts
    Water, 120-220 parts.
  3. 3. method according to claim 1 or 2, it is characterised in that the ratio of mud for controlling the concrete is 0.3-0.8； Grout volume percentage is 22-34%, and agstone percent by volume is 2-12%, and slurry percent by volume sum controls For 32-36%.
  4. 4. according to the method for claim 3, it is characterised in that the ratio of mud for controlling the concrete is 0.4-0.7；Cement Volume of slurry percentage is 22-34%, and agstone percent by volume is 2-12%, and the control of slurry percent by volume sum is 32-36%.
  5. 5. according to the method described in claim any one of 1-4, it is characterised in that the coarse aggregate is in rubble, cobble One or two, its largest particles particle diameter are no more than 20mm；Its density is 2.5-2.8g/cm3,；Its water absorption rate is 0.80- 1.20%.
  6. 6. according to the method described in claim any one of 1-4, it is characterised in that the fine aggregate is selected from natural sand, artificial sand One or both of, its largest particles particle diameter is no more than 5mm；Its density is 2.3-2.6g/cm3；Its water absorption rate is 1.60- 2.00%.
  7. 7. according to the method described in claim any one of 1-4, it is characterised in that the cement is marked as 32.5N, 42.5N Or 52.5N cement；Its average grain diameter is 10-12 μm；Its density is 3-3.5g/cm3。
  8. 8. according to the method described in claim any one of 1-4, it is characterised in that the Average Particle Diameters of the agstone are 12-16μm；Its density is 2.4-2.8g/cm3。
  9. 9. according to the method described in claim any one of 1-4, it is characterised in that the water reducer is polycarboxylate water-reducer.
  10. A kind of 10. product being prepared according to any one of claim 1-9 methods described.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109437725A (en) * 2018-12-27 2019-03-08 中交公局第三工程有限公司 A kind of highway engineering agstone concrete and preparation method thereof
CN111999231A (en) * 2020-08-24 2020-11-27 河海大学 Test method for concrete near-surface chloride ion permeability resistance

Citations (4)

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CN102408204A (en) * 2010-09-26 2012-04-11 同济大学 High-performance concrete capable of resisting high-temperature cracking
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