CN101186477B - Asphalt cement mortar - Google Patents
Asphalt cement mortar Download PDFInfo
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- CN101186477B CN101186477B CN 200710050932 CN200710050932A CN101186477B CN 101186477 B CN101186477 B CN 101186477B CN 200710050932 CN200710050932 CN 200710050932 CN 200710050932 A CN200710050932 A CN 200710050932A CN 101186477 B CN101186477 B CN 101186477B
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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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/50—Flexible or elastic materials
- C04B2111/503—Elastic materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an asphalt cement mortar, which is a compound synthesized by dry materials, emulsified asphalt, water-reducing agent, defoaming agent and water pro rata. Each component in the mixture is calculated in portions by weight: 70-80 portions of the dry materials, 10-20 portions of the emulsified asphalt, 0.1-0.4 portion of the water-reducing agent, 0.005-0.01 portion of the defoaming agent and 8-15 portions of the water. The dry materials consist of cement, aggregate and expansion agent. Each component in the dry materials is calculated in portions by weight: 35-42 portions of the cement, 58-65 portions of the aggregate and 0.0015-0.0025 portion of the expansion agent. The component proportion of the asphalt cement mortar of the invention is proved by a great number of experiments and can lead each component to be fully used and generate synergistic effect. The invention has appropriate intensity and elasticity, good weather resistance and construction ability and can completely meet the need of plate-typed unballasted track construction in railways or in cities. Furthermore, the raw materials of the components of the invention are all produced in domestic, thus greatly saving cost.
Description
Technical field
The present invention relates to building material technical field, relate in particular to a kind of asphalt cement mortar.
Background technology
For the high-speed railway of 350 kilometers of design speed per hours, the comfortableness of driving and security are most important.Traditional tiny fragments of stone, coal, etc. track supporting capacity peace compliance that has all can't guarantee the safety traffic of bullet train.Plate-type ballastless track technology adopts is that the composition material of moulding replaces railway ballast, and wheel track power is distributed uniformly and is delivered on the roadbed basis.Plate-type ballastless track technology carrying rails be Bo Geban, roadbed chassis concrete is the skeleton construction body, the both has intensity and inelastic structure.Be the comfortableness and the security of assurance driving, need be a kind of as the bedding mortar that cushions compaction material, this mortar is answered existing certain elasticity, and certain intensity is arranged again, to alleviate the surging force that produces when bullet train moves, the comfortableness that the increase passenger takes.Strength of cement mortar is enough high, but elasticity is not enough, the pitch good springiness, but intensity is low, and temperature influence is big, has therefore adopted the two bonded asphalt cement mortar, and asphalt cement mortar generally adopts cement, emulsified bitumen, sand and various Additive to mix.Asphalt cement mortar is the important elastic layer of plate-type ballastless track, and plays firm track plate, the effect of part longitudinal resistance is provided, and is the key components of non-fragment orbit structural elasticity adjustment layer.Foreign study development plate-type ballastless track early also is used widely as the asphalt cement mortar of plate-type ballastless track structural key technology, and result of use is better, but has deficiencies such as price is high, raw material sources are limited.Though domesticly also early carried out research about asphalt cement mortar; Some bibliographical informations are also arranged; But through the plate-type ballastless track examination shop of on Qinhuangdao Shenyang Special Passenger Line dog river, two what two grand bridge of bridge, carrying out; The result shows that the practical application effect of domestic existing asphalt cement mortar is still undesirable; This is all influential to the performance of mortar mainly due to each component of asphalt cement mortar and proportioning thereof, and siccative has remarkably influenced to the material sepd degree of asphalt cement mortar and outer amount of water, the outer amount of water that the siccative water requirement directly influences asphalt cement mortar when mixing and stirring; If the water requirement of siccative is too high, just can't mix the degree of mobilization conformance with standard that adds water and make asphalt cement mortar; Outer amount of water is very big to the flowability affects of asphalt cement mortar, and along with the increase of outer amount of water, the flowing time of asphalt cement mortar diminishes, (≤165kg/m when outer amount of water is too small
3) time, the flowing time of asphalt cement mortar long (>=130s), asphalt cement mortar can't pour into executes (>=200kg/m
3) time, the flowing time of asphalt cement mortar too short (≤70s), asphalt cement mortar will produce deposition; And under existing proportioning, emulsified bitumen and cement are not easy compatible, have also greatly influenced the performance of asphalt cement mortar.Above various factors causes existing asphalt cement mortar to have deficiencies such as degree of mobilization is bad, operable time weak point, thermal adaptation narrow range, the easy generation of mortar separation.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency that exists in the prior art, provide that a kind of degree of mobilization is good, operable time length, good weatherability, the not segregative asphalt cement mortar of aggregate.
To achieve these goals, a technical scheme of the present invention provides a kind of asphalt cement mortar, and it is by the mixture that siccative, emulsified bitumen, water reducer, skimmer and water proportional mixing are formed, and each moity and weight proportion are in the mixture:
70～80 parts of siccatives, 10～20 parts of emulsified bitumens, 0.1～0.4 part of water reducer, 0.005～0.01 part of skimmer, 8～15 parts in water,
Said siccative is made up of cement, aggregate and swelling agent, and each moity of siccative and weight proportion are: 35～42 parts of cement, 58～65 parts in aggregate, 0.0015～0.0025 part of swelling agent.
The optimum ratio of said asphalt cement mortar is:
75.48 parts of siccatives, 14.16 parts of emulsified bitumens, 0.27 part of water reducer, 0.008 part of skimmer, 10.18 parts in water.
In above-mentioned asphalt cement mortar, the maximum particle diameter≤1.0mm of said siccative, and≤composition of 0.125mm accounts for 40%～50%, and said cement is preferably silicate cement; Said aggregate is maximum particle diameter≤1.0mm, density≤2.8kg/dm
3, light organic impurity content≤0.25% sand; Can be natural sand, also can be machine-processed sand, can use separately also and can use two or more mixtures; Said cement and aggregate is that asphalt cement mortar provides certain intensity, is the intensity main body of asphalt cement mortar; Said swelling agent is an aluminium powder, makes asphalt cement mortar have certain swelling property through getting angry, and increases the degree of compactness of filling;
Said emulsified bitumen is the anionic emulsified bitumen of water cut≤40%, is the elastic body of asphalt cement mortar;
Said water reducer is a polycarboxylic acids dehydragent, and its effect is diffusing capacity and a flowing time of regulating asphalt cement mortar;
Said skimmer be water-free, in water easy and uniform dissolved silicon system skimmer, like organosilicon, modified organic silicon etc., its effect is to eliminate owing to be stirred in the great amount of bubbles that produces in the asphalt cement mortar system.
The selection of each component of above-mentioned asphalt cement mortar and proportioning thereof is confirmed through a large amount of tests: according to the water requirement of cement and aggregate in " OKAMURA method, PUNTKE method " definite respectively siccative; Thereby select the alap siccative of water requirement, select to have the emulsified bitumen of good workability through the compatibility test of siccative and emulsified bitumen with siccative; After confirming the component of bituminous mortar, the content of each composition in the prescription is allocated, drawn the ratio range that can satisfy the asphalt cement mortar performance requriements according to all detection data of prescription.
The purpose of said OKAMURA method test is to confirm β p value according to the OKAMURA method, confirms the water requirement of cement with this, and then finds the low cement of water requirement.Said β p value is a no unit parameter, when it is illustrated in water-cement admixture and does not begin as yet to flow, and the PRESSURE-VOLUME RELATION of water and cement, it can be tried to achieve with diagram or account form by the test of carrying out.Test required instrument and auxiliary means and comprise Hai Gemantai funnel, floating rule, diameter sheet glass, folding rule and the ruler greater than 30cm, the laboratory is with mortar mixer and gear, spoon, electronic scales.OKAMURA method TP may further comprise the steps:
(1) all raw material is placed (comprising water) under 20 ± 2 ℃ the laboratory temperature in advance, so that their show the same temperature in test;
(2) accurately take by weighing cement and water, be accurate to 0.1g, the volume of testing required cement is between 250～350cm
3Between, calculating water requirement through the volumetric ratio of choosing between water (Vw) and the cement (Vp), Vw/Vp can be according to the water requirement of each cement between 0.6 and 1.5;
(3) funnel with Hai Gemantai places the sheet glass center that keeps flat;
(4) wet rubbing agitation vat and stirring tool are poured the water consumption that draws according to selected volumetric ratio in agitation vat, add load weighted solid material afterwards, and agitation vat is packed in the stirrer; And machine, its whipping procedure is the slow speed of revolution in 60 seconds, 30 seconds high rotating speeds; 90 seconds intermittently, and 60 seconds high rotating speeds are when stirring intermittently; Scrape the edge of agitation vat with spoon, the caking that occurs at the bottom of breaing up barrel, and mix up a little;
(5) after the stirring flow process finishes, take off agitation vat, fill up the Hai Gemantai funnel, will avoid funnel to float this moment, and use is scraped leveling ruler unnecessary materials are entirely blown off, if having clout to fall on the sheet glass this moment, then uses dried cloth to wipe away;
(6) at the uniform velocity and do not have and vertically to pull up off and on the Hai Gemantai funnel;
(7) after slurry flows out, on two corresponding right angle orientation, measure the slurry diameter of expansion, be accurate to 1mm, the error of monodrome should not surpass 10mm; With the diffusibleness intermediate value of twice measurement as a result of is that unit record is got off with mm; According to different Vw/Vp ratios, the diffusibleness that draws should be between 140 to 230mm, if diffusibleness is too small; It is invalid that test is regarded as; Should improve the water consumption of this cement, test also is invalid under the excessive diffusibleness, reduces the water consumption of this cement;
(8), calculate gamma function value (Γ) by following formula according to the diffusibleness value that records:
Γ=(diffusibleness/100)
2-1
Wherein 100 these numerical value are to be the interior diameter of the Hai Gemantai funnel bottom of unit with the millimeter, and different funnel sizes is then calculated with the interior diameter of institute's use funnel respectively;
(9) be X-coordinate with the Γ value, the ratio of Vw/Vp is that ordinate zou returns, and the numerical value of trying to achieve is coupled together through straight line; The intersection point of this straight line and ordinate zou is exactly the β p value of asking; β p value is more little, shows that the water requirement of cement is more little, and the flowability of mortar satisfies more easily.Test-results shows that the β p value of domestic other cement is all bigger, generally all greater than 1.03; And the β p value of silicate cement is less, and less than 1.0, is X-coordinate with silicate cement with the Γ value; The ratio of Vw/Vp is that ordinate zou returns, and the gained regression equation is y=0.0876x+0.9773 (R
2=0.999), its β p value is 0.977, and concrete test-results is as shown in table 1:
The β of table 1 silicate cement
pValue
The purpose of said PUNTKE (sloping Pood) test is to confirm the minimum water requirement of aggregate (sand), and then selects the alap aggregate of water requirement, tests required instrument and auxiliary means and comprises electronic balance, tumbler, glass stick, rubber suction bulb (suction pipe).Said sloping Pood's test may further comprise the steps:
(1) takes by weighing 100g exsiccant sand;
(2) alleged dry sand is poured in the tumbler; Add a certain amount of water with rubber suction bulb (suction pipe), stir, again the jolt ramming cup; During each the test; The number of times of jolt ramming is decided with the practical situation of sand in the cup, stops vibration during and excreting water phenomenon that surperficial appearance is slight fully closely knit when sand, and this moment, added water was the water requirement of this sand;
(3) triplicate test is as the criterion with the MV of minimum amount of water.
Test-results shows, as the density≤2.8kg/dm of aggregate
3, maximum particle diameter≤1.0mm, and≤composition of 0.125mm accounted for 40%～50% o'clock, and the water requirement of aggregate is lower, and this moment, the water requirement of per 100 parts of dried aggregates was 15～17.5 parts, saw table 2
The water requirement of table 2 aggregate
The purpose of said siccative swelling rate test is through using the shrinkage of a certain amount of swelling agent (aluminium powder) compensation mortar.Test required instrument and auxiliary means and comprise the glue sand agitator, the glass cylinder of diameter 50mm, high 200mm is accurate to the graduated scale of mm.Said TP may further comprise the steps:
(1) takes by weighing an amount of siccative and water and stir, process mortar;
(2) made mortar is poured in the graduated cylinder, and write down the scale value (h) of this moment;
(3) the graduated cylinder sealing of mortar will be housed, and leave standstill at a certain temperature and measure its height (h after 24 hours
2).
The variation of volume behind the 24h (mortar expansion rate) is calculated as follows:
(h
2-h)/h×100％
In the formula: the elemental height (mm) of h CA mortar
h
2The height of CA mortar (mm) after 24 hours
Test-results shows in per 100 parts of siccatives and adds the shrinkage that 0.0015～0.0025 part of aluminium powder can compensate mortar.
Said siccative is that the check siccative mixes the workability that forms mix with emulsified bitumen with the purpose of emulsified bitumen compatibility test.Testing required instrument and auxiliary means comprises: 2000ml beaker, the electronic scales of tolerance range 0.1g, testing laboratory's agitator---reinforcement stirrer; Glass stick, insulation can, zero(ppm) water or deionized water; The kinetic viscosity meter, TM (30～100 ℃), the 500ml graduated cylinder (error ± 5ml); Stopwatch (reading error ± 0.5), pin scoop, kinetic viscosity meter.The compatibility test method may further comprise the steps:
(1) emulsified bitumen that 500ml is supplied to detect use is uniformly poured in the measuring cup;
(2) in off-the-shelf emulsified bitumen, add 300g water, and use whipping appts to stir about 10s;
(3) one spoonfuls one spoonful with in the load weighted 600g siccative adding emulsified bitumen; And the stirring that continues; Restir is 2 minutes after whole siccatives all adds, and evenly gets final product the process of whole interpolation siccative and reach uniform state to it and should in 5 minutes, accomplish fully up to siccative;
(4) mix that is placed in the beaker will be accomplished to prevent dust, build, and in 40 ℃ insulation can, deposits 4 hours then;
(5) use glass stick to check the throw out of test specimen, look at whether throw out can stir out, if can, should approximately make it even in one minute by whipping appts, and then detect with the revolution stirring of 300r/min; If throw out can not stir out, will detection of end, pass judgment on this mix for unstable, need again the siccative of weighing certain mass to carry out compatibility test;
(6) the uniform mix of quality is poured in the kinetic viscosity appearance, expected completely that up to arriving cue mark stops to add;
(7) the ball valve discharge port of kinetic viscosity appearance is opened 20s, let mix flow in the graduated cylinder, 20s closes the ball valve discharge port later, and reads the volume that flows into mix in the graduated cylinder, in ml.
Compatibility test result shows that selected siccative of the present invention and the formed mix of anionic emulsified bitumen have 70ml at least through flowing out viscosity apparatus in 20s, shows that this mix has good workability.
According to above-mentioned test-results; Gather the ratio range that satisfies asphalt cement mortar each item technical performance index; Final definite asphalt cement mortar proportioning of the present invention; Each component of the present invention and ratio range thereof make that asphalt cement mortar of the present invention has that degree of mobilization is good, operable time length, good weatherability, the not segregative performance of aggregate, carry out service check with the asphalt cement mortar of the said ratio system of mixing and to mixing the asphalt cement mortar that makes, and each item performance index assay is following:
Mobile (1.0L): 100 ± 10s
Diffusibleness a
5=300mm t
300=7s a
30=300mm and t
300=8s
Operable time >=45min
Density >=1.8kg/L
Air content＜10%
5～35 ℃ of mortar temperatures
Rate of expansion 0.8～2.0%
Bleeding rate 0%
Ultimate compression strength 1 day was 6～7Mpa, and 7 days is 13～16Mpa, and 28 days is 16～24Mpa
Folding strength 1 day was 1.5～1.7Mpa, and 7 days is 3.5～4.5Mpa, and 28 days is 5.1～7.0Mpa
Young's modulus 7000～10000Mpa
Behind 56 freeze-thaw cycle of frost resistance, weathering value≤100g/m
2, qualified
Weathering resistance 10000 subordinate loads circulation back non-cracking
Compared with prior art; The invention has the beneficial effects as follows: the present invention is according to the characteristics and the performance requriements of asphalt cement mortar; Water requirement according to cement and aggregate in " OKAMURA method, PUNTKE method " definite respectively siccative; Thereby select the alap siccative of water requirement, select to have the emulsified bitumen of good workability through the compatibility test of siccative and emulsified bitumen with siccative; All detection data according to prescription are allocated the content of each composition in the prescription; Draw the ratio range that can satisfy the asphalt cement mortar performance requriements; Each component of asphalt cement mortar of the present invention can be given full play to effect separately, and produces synergistic effect, has suitable intensity and elasticity; Good weathering resistance and application property can satisfy the needs that railway or city plate-type ballastless track are constructed fully.And each component raw material of the present invention is domestic production, can greatly practice thrift cost, and the light emulsified bitumen can be practiced thrift half at least cost.
Embodiment
Below in conjunction with specific embodiment the present invention is made further detailed description.
Embodiment 1
A kind of asphalt cement mortar, by the mixture that siccative, emulsified bitumen, water reducer, skimmer and water proportional mixing are formed, each moity and weight proportion are in the mixture: 75.48 parts of siccatives; 14.16 parts of emulsified bitumens; 0.27 part of water reducer, 0.008 part of skimmer, 10.18 parts in water.Maximum particle diameter≤the 1.0mm of said siccative, and≤composition of 0.125mm accounts for 40%～50%, by silicate cement, and maximum particle diameter≤1.0mm, density≤2.8kg/dm
3, light organic impurity content≤0.25% aggregate (sand), aluminium powder is formed, each moity of siccative and weight proportion are: 40 parts of cement, 60 parts in aggregate, 0.002 part of aluminium powder.
The asphalt cement mortar of said ratio is mixed system; Carry out following test and check its performance mixing the asphalt cement mortar that makes: the test of asphalt cement mortar diffusibleness, asphalt cement mortar fluidity test, asphalt cement mortar air content test, the anti-folding/compressive strength test of asphalt cement mortar, asphalt cement mortar elasticity modulus test, asphalt cement mortar freezing and thawing test, the result is as shown in table 3 for the present embodiment service check.
The purpose of said asphalt cement mortar diffusibleness test is to confirm the denseness and the operable time of mortar through the diffusing capacity of measuring mortar.Test used test apparatus and auxiliary means and comprise that an area is the (400mm ± 2mm) * (sheet glass of 400mm ± 2mm); One have slick internal surface, internal diameter be 50mm ± 1mm, high for the anti-warping rigidity plastics of 190mm ± 2mm process in order to hold the socket of new mortar, folding rule or vernier callipers.Said asphalt cement mortar diffusibleness TP may further comprise the steps:
(1) sheet glass is placed on the fixed horizontal base, the surface and the socket internal surface of sheet glass are used moist rag scrub (lacklustre little wet surface);
(2) socket is erected in the middle of the sheet glass, then asphalt cement mortar is inserted in the pipe, until the upper limb of socket;
(3) if there is dirt to wipe clean on the flow diffuser, and once more with wet cloth wiping;
(4) this socket is promptly vertically drawn high 15cm ± 2cm, and keep 10s, can socket be put aside afterwards in this position;
(5) after asphalt cement mortar stops to flow, to be parallel to its diameter of work top edge metering, be accurate to 5mm.
Preferably use vernier callipers for this purpose, flow expansion amount a is the MV of twice measurement diameter, time t
300Can be used as the reference value of stablizing constant slurry composition, in other words used time t when the asphalt cement mortar of flow expansion reaches the 300mm diameter
[s]
The purpose of said asphalt cement mortar fluidity test is to detect the sustainable working hour of mortar.Test used instrument and auxiliary means and comprise that a capacity is the funnel of 1.7L ± 10%, stopwatch, one liter drum.Said asphalt cement mortar fluidity test method may further comprise the steps:
(1) drum is placed on the funnel hole below, all surface wiped clean of funnel is little moistening, close funnel below ports valve;
(2) slowly and equably pour the asphalt cement mortar of 1.0L into funnel, funnel below ports valve is opened, start stopwatch simultaneously, pick up counting.
Measure funnel and leak the clean required time and be accurate to 0.5s, should carry out twice test, test for the first time should mix the back at asphalt cement mortar carried out at once, test for the second time then after mixing 30min carry out.
The purpose of said asphalt cement mortar air content test is to detect the air content and the density of asphalt cement mortar.Test used instrument and auxiliary means and comprise that is scraped a leveling ruler; The metal vessel bucket that crown cap is arranged that capacity is 1.0L, the wind box (pressure chamber) that this metal vessel bucket comprises a sealing and one link to each other with the pressure chamber and are used to measure the weather gage of the air pressure of executing, and said asphalt cement mortar air content test method may further comprise the steps:
(1) with the inboard wiped clean of container and make it little humidity;
(2) with asphalt cement mortar container is filled up, will notice that the asphalt cement mortar surface should be level and smooth this moment;
(3) wipe outstanding asphalt cement mortar off with scraping leveling ruler, form a smooth surface, and flush sealing with the container upper limb;
(4) outside of container is dried and cleaned, and will cover and tightly cover on container;
(5) air that accumulates under the meter case is discharged;
(6) pump air in the wind box of sealing, till constant pressure, this pressure must meet the pressure of when calibration instrument, confirming;
(7) air door between wind box and the sample receiver is opened, in case pressure reaches equilibrium, just can from the weather gage of calibration or by working curve, be read air capacity, this value should be with 0.1% integer representation.
The air capacity of each mortar specimen should be the MV of twice single measurement, the integer calculations with 0.5%.If the error of twice single measurement greater than 10% of its MV, then should be got other two parts of samples and repeat this test from remaining part sample.Should use the individual event value and the MV of these two additional samples in the case.
The purpose of the anti-folding/compressive strength test of said asphalt cement mortar is to detect anti-folding/ultimate compression strength of 1 day, 7 days, 28 days of asphalt cement mortar; The purpose of said asphalt cement mortar elasticity modulus test is to detect the static(al) pressurized elastic mould value of asphalt cement mortar; The purpose of said asphalt cement mortar freezing and thawing test is to calculate the weathering amount of substance through n freeze-thaw cycle; And then the freeze-thaw resistance of definite mortar, said asphalt cement mortar resists the TP of folding/compressive strength test, asphalt cement mortar elasticity modulus test, asphalt cement mortar freezing and thawing test all to be undertaken by domestic ordinary method.
Embodiment 2
A kind of asphalt cement mortar, it is by the mixture that siccative, emulsified bitumen, water reducer, skimmer and water proportional mixing are formed, and each moity and weight proportion are in the mixture:
80 parts of siccatives, 420 parts of emulsified bitumens, 0.4 part of water reducer, 0.01 part of skimmer, 15 parts in water, said siccative is made up of silicate cement, aggregate, aluminium powder, and each moity of siccative and weight proportion are: 42 parts of cement, 58 parts in aggregate, 0.0025 part of aluminium powder.
Carry out service check with the asphalt cement mortar of the said ratio system of mixing and to mixing the asphalt cement mortar that makes, its result sees table 3.
Embodiment 3
A kind of asphalt cement mortar, it is by the mixture that siccative, emulsified bitumen, water reducer, skimmer and water proportional mixing are formed, and each moity and weight proportion are in the mixture:
70 parts of siccatives, 10 parts of emulsified bitumens, 0.1 part of water reducer, 0.005 part of skimmer, 8 parts in water, said siccative is made up of silicate cement, aggregate, aluminium powder, and each moity of siccative and weight proportion are: 35 parts of cement, 65 parts in aggregate, 0.0015 part of aluminium powder.
Carry out service check with the asphalt cement mortar of the said ratio system of mixing and to mixing the asphalt cement mortar that makes, its result sees table 3.
Table 3 asphalt cement mortar PT result
Claims (2)
1. asphalt cement mortar, it is characterized in that by the mixture that siccative, emulsified bitumen, water reducer, skimmer and water proportional mixing are formed the weight proportion of each moity in the mixture is:
70～80 parts of siccatives, 10～20 parts of emulsified bitumens, 0.1～0.4 part of water reducer, 0.005～0.01 part of skimmer, 8～15 parts in water,
Said siccative is made up of cement, aggregate and swelling agent, and each moity of siccative and weight proportion are: 35～42 parts of cement, 58～65 parts in aggregate, 0.0015～0.0025 part of swelling agent;
Maximum particle diameter≤the 1.0mm of said siccative, and≤composition of 0.125mm accounts for 40%～50%; Said cement is silicate cement, and said aggregate is maximum particle diameter≤1.0mm, density≤2.8kg/dm
3, light organic impurity content≤0.25% sand, said sand is natural sand, or machine-processed sand, said sand is one or both in natural sand or the machine-processed sand; Said swelling agent is an aluminium powder;
Said emulsified bitumen is the anionic emulsified bitumen of water cut≤40%;
Said water reducer is a polycarboxylic acids dehydragent;
Said skimmer is a silicon system skimmer.
2. asphalt cement mortar according to claim 1 is characterized in that the weight proportion of each moity in the said mixture is:
75.48 parts of siccatives, 14.16 parts of emulsified bitumens, 0.27 part of water reducer, 0.008 part of skimmer, 10.18 parts in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710050932 CN101186477B (en) | 2007-12-21 | 2007-12-21 | Asphalt cement mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710050932 CN101186477B (en) | 2007-12-21 | 2007-12-21 | Asphalt cement mortar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101186477A CN101186477A (en) | 2008-05-28 |
| CN101186477B true CN101186477B (en) | 2012-09-12 |
Family
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| CN 200710050932 Active CN101186477B (en) | 2007-12-21 | 2007-12-21 | Asphalt cement mortar |
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| CN101980014B (en) * | 2010-10-21 | 2013-05-29 | 安徽中铁工程材料科技有限公司 | Method for testing adaptability of polycarboxylic water reducer and cement |
| CN102358690B (en) * | 2011-08-17 | 2012-11-07 | 句容宁武高新技术发展有限公司 | Epoxy asphalt cement mortar, preparation method, and application of epoxy asphalt cement mortar in ballastless tracks |
| CN102503296B (en) * | 2011-10-20 | 2013-04-24 | 武汉理工大学 | Cement asphalt mortar used for high temperature complicated work condition, and preparation method and construction method thereof |
| CN108101464A (en) * | 2018-01-11 | 2018-06-01 | 中国铁道科学研究院铁道建筑研究所 | A kind of asphalt powder modified concrete with good frost resistance |
| CN111943581A (en) * | 2020-06-18 | 2020-11-17 | 启东海中港建材有限公司 | Anti-crack concrete formula |
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Address after: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Co-patentee after: SHENZHEN ZHONGTIE ERJU ENGINEERING CO., LTD. Patentee after: China Railway No. 2 Engineering Group Co., Ltd. Address before: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Co-patentee before: SHENZHEN ZHONGTIE ERJU ENGINEERING CO., LTD. Patentee before: CHINA RAILWAY NO.2 BUREAU ENGINEERING CO., LTD. |
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