CN110031360A - A kind of detection of inorganic flow material homogeneity and representation method - Google Patents
A kind of detection of inorganic flow material homogeneity and representation method Download PDFInfo
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- CN110031360A CN110031360A CN201910162627.XA CN201910162627A CN110031360A CN 110031360 A CN110031360 A CN 110031360A CN 201910162627 A CN201910162627 A CN 201910162627A CN 110031360 A CN110031360 A CN 110031360A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
Abstract
The present invention provides a kind of detection of inorganic flow material homogeneity and representation methods, this method is the slurry for first preparing inorganic flow material, take three parts of slurries, portion is used for the initial density of testing size, portion is packed into delamination degree cylinder, portion uses inside penetration resistance value of the SN-100 type digital display mortar coagulation time tester testing size under different time of repose, when penetration resistance value, which is more than or equal to material for the first time, is no longer subjected to displacement the internal drag value being subject to, pour out the upper slurry in delamination degree cylinder, and it is tested immediately through Shi Midu after stirring the lower slurry in delamination degree cylinder, calculate rate of change of the density, rate of change of the density is smaller, indicate that material homogeneity is better, rate of change of the density is bigger, indicate that material homogeneity is poorer.Detection and representation method of the invention, easy to operate, data are easily obtained, and obtained conclusion is consistent with the measured result of product, are solved in existing national standard and are not specified to material homogenieity, also do not have the technical issues of representation method in industry.
Description
Technical field
The present invention relates to the detection of the detection of material property and representation method more particularly to a kind of construction material homogenieity and
Representation method specifically relates to detection and the representation method of a kind of building field inorganic flow material homogeneity.
Background technique
The inorganic material of building field is usually to be made of cementitious material, filler or aggregate, additive etc., the inorganic material
It is uniformly mixed with water and carries out site operation again, required architectural construction can be obtained.Inorganic flow material is that have centainly
Mobility, can voluntarily levelling, without apply outside mechanical force can obtain even density and it is microcosmic continuously have specificity
A kind of inorganic material of energy.Inorganic flow material includes common grouting material, ultra-fine grouting material, Self-leveling, cast-in-place product etc., is
Achieve the effect that automatic moulding, the formula design of inorganic flow material, which must be taken into consideration, has certain fluidity, but another
Aspect, fluidity is higher, and with regard to smaller, intermolecular force reduces the intermolecular interaction of composition material, will between particle
Larger spacing is generated, the particle of different densities will successively be settled as active force constantly reduces, and be ultimately formed uneven
Layering, it is different to will lead to deposit ingredient at product different height, or even generates tomography and more serious layering, seriously
Influence its security performance.
The homogenieity of inorganic flow material is very big on the influence of the performance of product, but rule are not yet made to this in national standard at present
It is fixed, also without a kind of unified detection and representation method in industry.
The homogeneity problem of inorganic flow material, which typically occurs in after stirring is completed to construction, starts the mistake for occurring condensing
Cheng Zhong.Material stirring is completed after entering construction, and effect of the particle therein by three kinds of power, i.e. self gravity, viscosity are brought
Resistance, other particles sink brings push up against power；Grain density is bigger, and gravity is bigger, is more easy to produce sinking；It is sticky
Spend smaller, resistance is more easy to produce sinking or floating with regard to smaller；When the power that pushes up against that the sinking of other particles generates is greater than very
To being far longer than gravity, and when viscosity is as low as insufficiently resistant to again, floating will be generated；Only when three kinds of dynamic balances,
Grain will not just generate sinking or floating.Either sink or float, particle can all generate displacement, and the displacement can be with the time
Extension and become increasing；In addition, with the extension of time, the aquation of material occurs gradually and produces resistance to displacement,
When resistance to displacement be greater than particle before direction of displacement force value when, displacement just stop, be usual when resistance reaches certain value
Described pre-hardening state.It can be seen that being completed between the presetting period in stirring, there is a time point, particle displacement occur
Maximum value.Time value is taken near the maximum, tests the density of base pastes, and compared with the density of initial slurry
Know the variation degree situation in whole process inside slurry.
Summary of the invention
Insufficient present on to overcome, the object of the present invention is to provide a kind of detections of inorganic flow material homogeneity
And representation method, this method uses the density for testing initial slurry and object time point slurry respectively, and carries out difference comparsion, can
Accurately to indicate the homogeneity of material.
In order to achieve the above object, detection and the representation method of inorganic flow material homogeneity of the invention, successively include
Following steps:
(1) according to the slurry for preparing sufficient amount of inorganic flow material；
(2) slurry for taking appropriate step (1) to prepare, the density of the slurry is tested using density cup or density bucket, which is first
Beginning density, is denoted as；
(3) slurry for taking appropriate step (1) to prepare again, is fitted into delamination degree cylinder, fills and strike off upper surface；
(4) slurry for taking appropriate step (1) to prepare, is existed using SN-100 type digital display mortar coagulation time tester testing size
Inside penetration resistance value F under different time of repose, when penetration resistance value F be more than or equal to for the first time material be no longer subjected to displacement by
The internal drag value F arrived0When, the upper slurry in step (3) delamination degree cylinder is poured out immediately, and guarantees that remaining slurry surface is being divided
8.5-9 centimeters on depth cylinder bottom surface；
(5) after stirring the remaining slurry in delamination degree cylinder again, its density is tested immediately, this density is to be denoted as through Shi Midu；
(6) rate of change of the density is calculated, rate of change of the density is smaller, indicates that material homogeneity is better, variable density
Rate is bigger, indicates that material homogeneity is poorer.
The present invention determines that material does not continue to generate displacement using the internal drag value being subject in Material Coagulating Process
Time, internal drag value is by two conditional decisions: 1, material is no longer subjected to displacement；2, it can stir.The slurry mixed was stood
Cheng Zhong, with the extension of time, material movement slows down gradually, until there is no displacements；And agitatability also slowly weaken until
Agitatability is lost completely；Internal drag value is exactly to meet the injection resistance for unshifting and measuring under the conditions of can stirring two at the same time
Force value
The present invention is no longer subjected to displacement the internal drag value F being subject to material0Measurement be: first prepare the inorganic stream of same type
The slurry of dynamic property material, tests different time using SN-100 type digital display mortar coagulation time tester in situation capable of stirring
The internal drag of point slurry, obtains one group of resistance Value Data, while taking out part size at corresponding time point, in a mold at
Type test specimen, maintenance are fractureed test specimen with anti-folding machine, observe whether its section material is sunk or floated to after final set,
In all shaping test pieces, select in the internal drag value at that time point corresponding to the test specimen that is not subjected to displacement of material it is the smallest that
A Resistance Value, as " material is no longer subjected to displacement the internal drag value being subject to ", which is the data measured in advance.
Preferably, in above-mentioned detection and representation method, the inorganic flow material is coarse aggregate mobility mortar, thin bone
Expect mobility mortar, cement-based grouting material or gypsum grouting mould material；Coarse aggregate mobility mortar is greater than for thickness
Three millimeters of ground decoration bed course processing or the earth material for doing surface grinding process again, fine aggregate mobility mortar is to be used for
Thickness is not more than three millimeters of floor decoration face layer material, and cement-based grouting material is for reinforcing, repairing, repair or basis is poured
The material built, gypsum grouting mould material is for cast-in-situ gypsum base filled wall.
Present invention applicant is to coarse aggregate mobility mortar, fine aggregate mobility mortar, cement-based grouting material or gypsum
The material of grouting mould material is no longer subjected to displacement the internal drag value F being subject to0It is measured, obtained numerical value is on the left side 0.1N
The right side, it is preferred, therefore, that the material is no longer subjected to displacement the internal drag F being subject in above-mentioned detection and representation method0For
0.1N。
The evaporation of moisture in order to prevent, the more preferable correctness for guaranteeing experiment, it is preferred that in above-mentioned detection and representation method,
Slurry is packed into after delamination degree cylinder and is covered with clean lid or wet cloth by the step (3).
Preferably, in above-mentioned detection and representation method, SN-100 type digital display mortar coagulation time that the step (4) uses
The injection test point sectional area of analyzer is 30mm2。
The detection of inorganic flow material homogeneity of the invention and representation method, as steady by the way of measuring density
There is the time for not continuing to generate displacement as material granule displacement maximum value for the first time in qualitative basic data, setting material
Time point, and test under this time point it through Shi Midu, by this through when density and the initial density of slurry compare, use
Its change rate indicates that material of the material in process of setting is displaced stability, to ensure the continuity of final material and homogeneous
Property, safely and effectively.Detection and representation method of the invention, easy to operate, data are easily obtained, the reality of obtained conclusion and product
Result is surveyed to be consistent, solved in existing national standard very well material homogenieity is not specified, the also not no skill of representation method in industry
Art problem.
Detailed description of the invention
Fig. 1 is the detection of inorganic flow material homogeneity of the present invention and the flow diagram of representation method.
Fig. 2 is the section comparative diagram after the sizing material forming of embodiment 1 and comparative example 1.
Fig. 3 is the section comparative diagram after the sizing material forming of embodiment 2 and comparative example 2.
Fig. 4 is the section comparative diagram after the sizing material forming of embodiment 3 and comparative example 3.
Fig. 5 is the section comparative diagram after the sizing material forming of embodiment 4 and comparative example 4.
Specific embodiment
Embodiment 1
1, the formula of coarse aggregate mobility mortar
42.5 400 parts of ordinary portland cement
42.5 50 parts of quick hardening sulphoaluminate cement
200 parts of 5-10 mesh dry sand
50 parts of 10-20 mesh dry sand
150 parts of 20-40 mesh dry sand
100 parts of 40-70 mesh dry sand
50 parts of 70-140 mesh dry sand
5,010 15 parts of redispersable latex powder
0.4 part of cellulose ether MT400
0.8 part of modified alta-mud
2 parts of defoaming agent P803
2,651 2 parts of water-reducing agent
202 parts of water
2, the test of density change of slurry rate
As shown in Figure 1, the test method of density change of slurry rate of the present invention in turn includes the following steps:
(1) 10 kilograms of slurry are prepared according to said ratio；
(2) slurry for taking no less than 500 grams tests initial density using 200 milliliters of density cups, and obtained initial density is
2125g/L；
(3) slurry for taking no less than 12 kilograms again, is fitted into delamination degree cylinder, strikes off upper surface, is covered with clean wet cloth；
(4) remaining slurry is tested into the resistance of the inside under different time of repose with SN-100 type digital display mortar coagulation time tester
Force value, in 52min, discovery internal drag value is greater than or equal to 0.1N for the first time, immediately starches the upper layer in delamination degree cylinder
Material is poured out, and guarantees 8.5-9 centimeters of the remaining slurry surface on delamination degree cylinder bottom surface；
(5) after stirring the remaining slurry in delamination degree cylinder again, test its density immediately, obtain through when density be 2148g/L；
(6) it is 1.11% that rate of change of the density, which is calculated,.
3, material properties test
Embodiment 2
1, fine aggregate mobility mortar formula
42.5 450 parts of ordinary portland cement
42.5 50 parts of quick hardening sulphoaluminate cement
500 parts of 50-100 mesh washed-out sand
5,010 40 parts of redispersable latex powder
2,651 2 parts of water-reducing agent
2 parts of defoaming agent P803
1 part of cellulose ether MT400
230 parts of water
2, the test of density change of slurry rate
Test method is same as Example 1, and the initial density measured is 2059g/L, after 45min through when density be 2060g/L,
The rate of change of the density being calculated is 0.05%.
Embodiment 3
1, the formula of cement-based grouting material
42.5 400 parts of ordinary portland cement
42.5 50 parts of quick hardening sulphoaluminate cement
100 parts of 10-20 mesh dry sand
200 parts of 20-40 mesh dry sand
150 parts of 40-70 mesh dry sand
85 parts of 70-140 mesh dry sand
15 parts of silicon ash
0.4 part of cellulose ether MT400
0.5 part of defoaming agent P803
0.1 part of air entraining agent AE-1
2,651 2.5 parts of water-reducing agent
150 parts of water
2, the test of density change of slurry rate
Test method is same as Example 1, and initial density is tested using one kilogram of density bucket, and the initial density measured is
After 2271g/L, 20min through when density be 2278g/L, the rate of change of the density being calculated be 0.32%.
Embodiment 4
1, gypsum grouting mould material formula
800 parts of building gypsum
42.5 100 parts of ordinary portland cement
100 parts of hydrophobic glass bead
2 parts of water-reducing agent P29
0.5 part of retarder PE
4 parts of hydrophober SHP60
490 parts of water
2, the test of density change of slurry rate
Test method is same as Example 1, and initial density is tested using one kilogram of density bucket, initial density material quantity about 1.2
Kilogram, about 6.5 kilograms of delamination degree cylinder material quantity, it is about 1.2 kilograms that internal drag value, which tests material quantity, and the initial density measured is
After 1126g/L, 26min through when density be 1127g/L, the rate of change of the density being calculated be 0.09%.
Comparative example 1
1, coarse aggregate mobility mortar formula
42.5 400 parts of ordinary portland cement
42.5 50 parts of quick hardening sulphoaluminate cement
200 parts of 5-10 mesh dry sand
50 parts of 10-20 mesh dry sand
150 parts of 20-40 mesh dry sand
100 parts of 40-70 mesh dry sand
50 parts of 70-140 mesh dry sand
5,010 15 parts of redispersable latex powder
0.1 part of cellulose ether MT400
2 parts of defoaming agent P803
2,651 2 parts of water-reducing agent
170 parts of water
2, the test of density change of slurry rate
Test method is same as Example 1, and the initial density measured is 2233g/L, after 70min through when density be 2387g/L,
The rate of change of the density being calculated is 6.90%.
Comparative example 2
1, fine aggregate mobility mortar formula
42.5 450 parts of ordinary portland cement
42.5 50 parts of quick hardening sulphoaluminate cement
500 parts of 50-100 mesh washed-out sand
5,010 40 parts of redispersable latex powder
2,651 2 parts of water-reducing agent
2 parts of defoaming agent P803
0.2 part of cellulose ether MT400
230 parts of water
2, the test of density change of slurry rate
Test method is same as Example 1, and the initial density measured is 2129g/L, after 31min through when density be 2149g/L,
The rate of change of the density being calculated is 0.94%.
Comparative example 3
1, cement-based grouting material ingredient
42.5 400 parts of ordinary portland cement
42.5 50 parts of quick hardening sulphoaluminate cement
100 parts of 10-20 mesh dry sand
200 parts of 20-40 mesh dry sand
150 parts of 40-70 mesh dry sand
85 parts of 70-140 mesh dry sand
0.07 part of cellulose ether MT400
0.5 part of defoaming agent P803
0.1 part of air entraining agent AE-1
2,651 2.5 parts of water-reducing agent
150 parts of water
2, the test of density change of slurry rate
Test method is same as Example 3, and the initial density measured is 2284g/L, after 30min through when density be 2313g/L,
The rate of change of the density being calculated is 1.27%.
Comparative example 4
1, the formula of gypsum grouting mould material
800 parts of building gypsum
42.5 100 parts of ordinary portland cement
100 parts of hydrophobic glass bead
2 parts of water-reducing agent P29
0.5 part of retarder PE
4 parts of hydrophober POWDER D
520 parts of water
2, the test of density change of slurry rate
Test method is same as Example 4, and the initial density measured is 1216g/L, after 26min through when density be 1233g/L,
The rate of change of the density being calculated is 1.40%.
Performance test
Embodiment 1 and comparative example 1 are coarse aggregate mobility mortars, are common at ground decoration bed course of the thickness greater than three millimeters
Reason material or the earth material for doing surface grinding process again, should meet the key technical indexes requirement: fluidity is more than or equal to
220mm, 24 hours compression strength are more than or equal to 6.0MPa, and flexural strength is more than or equal to 2.0MPa within 24 hours.
Embodiment 2 and comparative example 2 are the mobility mortars of fine aggregate, are common in the ground decoration that thickness is not more than three millimeters
Surface material, should meet the key technical indexes requirement: fluidity is more than or equal to 130mm, and compression strength is more than or equal within 24 hours
6.0MPa, flexural strength is more than or equal to 2.0MPa within 24 hours.
Embodiment 3 and comparative example 3 be the moderate cement-based grouting material of particles of aggregates be common in the reinforcing of building, reparation,
The material that repairing, basis pour etc., should meet the key technical indexes requirement: fluidity is more than or equal to 260mm, 24 hours pressure resistances
Degree is more than or equal to 22.0MPa.
Embodiment 4 and comparative example 4 are that gypsum base lightweight pours material, and frequently as wall light packing material, which is answered
Satisfaction the key technical indexes requirement: fluidity (190-230) mm, flexural strength be more than or equal to 3.0MPa, dry density be less than etc.
In 1000kg/m3。
The compression strength of test specimen and anti-is obtained after the fluidity to embodiment 1-4 and comparative example 1-4 slurry and molding respectively
Folding intensity is tested, and obtained data are shown in Tables 1 and 2, and the cross section of test specimen is as shown in Fig. 2,3,4,5.
Table 1
Table 2
The result and Fig. 2-5 that measured by table 1, table 2 it can be seen that
The difference that embodiment 1 and comparative example 1 are formulated is that embodiment 1 is added to 0.8 part of modified alta-mud and cellulose ether dosage
Change, comparative example 1 is not added with modified alta-mud because the dosage of cellulose MT400 is down to 0.1 part from 0.4 part, variable density
Rate is then increased to 6.90% from 1.11%, it is also seen that the uniformity of embodiment 1 is substantially better than comparative example 1 in Fig. 2 sectional view,
It can thus be seen that the addition of modified alta-mud and the suitable additive amount of cellulose ether, can be obviously improved coarse aggregate mobility
The homogenieity of material, to improve its resistance to compression, flexural strength；
Embodiment 2 is that the additive amount of cellulose ether is different from the difference that comparative example 2 is formulated, and comparative example 2 is because cellulose MT400's
Dosage is down to 0.2 part from 1 part, and rate of change of the density is then increased to 0.94% from 0.05%, it is also seen that in fact in Fig. 3 sectional view
The uniformity of example 2 is applied better than comparative example 2, it can thus be seen that the additive amount of cellulose ether is to the equal of fine aggregate free-flowing material
Matter has a certain impact；
Embodiment 3 and the difference that comparative example 3 is formulated are that embodiment 3 is added to changing for 15 parts of silicon ashes and cellulose ether additive amount
Become, comparative example 3 is not added with silicon ash because the dosage of cellulose MT400 is down to 0.07 part from 0.4 part, rate of change of the density then from
0.32% is increased to 1.27%, it is also seen that the uniformity of embodiment 3 is substantially better than comparative example 3 in the section of Fig. 4, thus may be used
To find out, the addition of silicon ash and the additive amount of cellulose ether have a certain impact to the homogenieity of cement-based grouting material；
The difference that embodiment 4 and comparative example 4 are formulated is to use different hydrophober, comparative example 4 because by the model of hydrophober by
SHP60 is changed to POWDER D, and rate of change of the density is then increased to 1.40% from 0.09%, in the section of Fig. 5 it is also seen that real
The uniformity for applying example 4 is substantially better than comparative example 4, it can thus be seen that selecting suitable hydrophober, can be improved gypsum base grouting
The homogenieity of material.
Above-described embodiment compares one by one with comparative example formation, the material of similar formulation, in the section formed after condensation, cuts
The uniformity in face and the size of rate of change of the density have very big relevance；Rate of change of the density is lesser, and section has no apparent
Grain sedimentation, laitance or lamination, rate of change of the density is biggish, and section can obviously find that the sedimentation phenomenon of bulky grain, surface are floating
The layering boundary line starched or had already appeared；Therefore, rate of change of the density can be effectively reflected layering of the slurry in hardening process
Situation.
Above-described embodiment and comparative example, it is selected to be formulated the case where the key technical indexes being able to satisfy in respective standard requires
Under, can be found under the requirement of the method for the invention and technical indicator rate of change of the density to final material ageing stability,
The influence of homogeneity, so, method of the invention can be used for the detection and expression of inorganic flow material homogenieity.
Above embodiments are only to verify heretofore described method and technique index for material homogeneity, stability
The feasibility of description, is not intended to limit protection scope of the present invention, all equivalence enforcements without departing from technical solution of the present invention or
Change, such as the change of slurry internal drag test mode, should be included in protection scope of the present invention.
Claims (5)
1. detection and the representation method of a kind of inorganic flow material homogeneity, in turn include the following steps:
(1) according to the slurry for preparing sufficient amount of inorganic flow material；
(2) slurry for taking appropriate step (1) to prepare, the density of the slurry is tested using density cup or density bucket, which is first
Beginning density, is denoted as；
(3) slurry for taking appropriate step (1) to prepare again, is fitted into delamination degree cylinder, fills and strike off upper surface；
(4) slurry for taking appropriate step (1) to prepare, is existed using SN-100 type digital display mortar coagulation time tester testing size
Inside penetration resistance value F under different time of repose, when penetration resistance value F be more than or equal to for the first time material be no longer subjected to displacement by
The internal drag value F arrived0When, the upper slurry in step (3) delamination degree cylinder is poured out immediately, and guarantees that remaining slurry surface is being divided
8.5-9 centimeters on depth cylinder bottom surface；
(5) after stirring the remaining slurry in delamination degree cylinder again, its density is tested immediately, this density is to be denoted as through Shi Midu；
(6) rate of change of the density is calculated, rate of change of the density is smaller, indicates that material homogeneity is better, variable density
Rate is bigger, indicates that material homogeneity is poorer.
2. detection and the representation method of inorganic flow material homogeneity according to claim 1, it is characterised in that: described
Inorganic flow Materials Inorganic free-flowing material is coarse aggregate mobility mortar, fine aggregate mobility mortar, cement-based grout material
Material or gypsum grouting mould material.
3. detection and the representation method of inorganic flow material homogeneity according to claim 2, it is characterised in that: described
Material is no longer subjected to displacement the internal drag value F being subject to0For 0.1N.
4. detection and the representation method of inorganic flow material homogeneity according to claim 3, it is characterised in that: described
Slurry is packed into after delamination degree cylinder and is covered with clean wet cloth or lid by the step (3).
5. detection and the representation method of inorganic flow material homogeneity according to claim 4, it is characterised in that: institute is originally
The injection test point sectional area of the SN-100 type digital display mortar coagulation time tester used in step (4) is 30mm2。
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