A kind of mixing encapsulant and its implementation for impermeability testTechnical field
It is particularly a kind of to be used to mix the present invention relates to a kind of mixing encapsulant and its implementation for impermeability testThe mixing waterproof and sealing material of solidifying soil impermeability test, belongs to measuring for materials field.
Background technology
In view of the process of the test of impermeability test method, only water just represent concrete by the seepage occurred inside test specimenWith the anti-permeability performance of mortar, thus do not allow in test water to be passed through between test specimen and die trial, that is, occur periphery seepage, otherwiseResult of the test can be caused untrue, therefore to be sealed between test specimen and die trial.For a long time, the encapsulating method is mainly wrappedInclude：
1) paraffin encapsulating method.There are two shortcomings using paraffin and rosin, one is that heating paraffin wax and rosin can produce oneFixed irritant gas, causes to stimulate bis- to be that sealing is poor, paraffin is difficult equal on the surface of test specimen to operating personnel's respiratory tractEven to smear, thickness differs, and paraffin becomes fragile after the cooling period, and during mould is loaded will by applying larger external force,It is easy to make the paraffin for being attached to specimen surface originally to come off or extrude to split, and loses sealed effect.
2) cement adds grease seal method.Cement and butter mixing encapsulant are not easy to apply uniform, test specimen week easily occurSide is poorly sealed, the situation for occurring periphery leak, causes concrete and mortar impermeability test to fail, cause material, the energy and whenBetween waste.
3) silica gel sealing method.Using after silica gel sealing, it is necessary to place 12 more than hour, it is higher simultaneously for consolidation pressureExperiment can not meet requirement, and often when experiment proceeds to half, test specimen side occurs and oozed.The material discarded after experiment is also unfavorable forEnvironmental protection.
The content of the invention
Based on above mentioned problem, the invention provides a kind of mixing encapsulant and its implementation for impermeability test,Technical problem to be solved is to be coated on impervious test piece side surface using this mixing encapsulant, it is ensured that impermeability test it is smoothCarry out, it is to avoid the seepage in advance at test specimen edge.
To achieve these goals, technical scheme is as follows：
A kind of mixing encapsulant and its implementation for impermeability test, including concrete impervious test piece and test specimenSet, the concrete impervious test piece surface is uniformly coated with mixing encapsulant, the coagulation for being coated with mixing encapsulantNative impervious test piece is pressed into specimen sleeve, and the concrete impervious test piece is conical structure；The specimen sleeve and concreteImpervious test piece appearance and size matches.Described mixing encapsulant is the paraffin and rosin, cement and butter for being fused into liquidAnd the mixture of absorption resin of sodium polyacrylate.
Further, in the mixture of described cement and butter, the mass ratio of cement and butter is 1.5~3.5: 1.
Further, in the mixture of described paraffin and rosin, the mass ratio of paraffin and rosin is 3.5~5.5: 1.
Further, cement and butter are well mixed and obtain mixture A, then paraffin and the well mixed of rosin are mixedCompound B, then A and B are mixed, then powder of the volume ratio for 1: 1 absorption resin of sodium polyacrylate is added into mixture, and mixClose uniform, obtain final mixing encapsulant.
Above-mentioned impermeability test is concrete impermeability test or mortar impermeability test.
Beneficial effect：
Most significant advantage of the invention is to carry out concrete impermeability test using mixing encapsulant, in technique, work efficiencyIn terms of all there is apparent advantage, good sealing effect, cost is low, thoroughly avoids potential safety hazard and test specimen leakage problems,As underground concrete structure is more and more in architectural engineering, the tested number of water-tight concrete also increases therewith.
Brief description of the drawings
Fig. 1 is impervious test piece elevation of the present invention；
Fig. 2 is impervious test piece plan of the present invention.
In figure, 1：Mix encapsulant；2：Impervious test piece；3：Specimen sleeve.
Embodiment
As shown in Figure 1-2, the present invention is a kind of mixing encapsulant and its implementation for impermeability test, specific realApply mode as follows：First cement and butter that mass ratio is 1.5~3.5: 1 are well mixed and obtain mixture A, then is by mass ratio3.5~5.5: 1 paraffin and the well mixed of rosin obtain mixture B, are mixed by A and B, then add into mixture volume ratioFor the powder of 1: 1 absorption resin of sodium polyacrylate, and it is well mixed, obtains final mixing encapsulant.
A kind of above-mentioned mixing encapsulant and its implementation for impermeability test, is comprised the following steps that：
Step one：First cement and butter that mass ratio is 1.5~3.5: 1 are well mixed and obtain mixture A；
Step 2：It is that 3.5~5.5: 1 paraffin and the well mixed of rosin obtain mixture B by mass ratio；
Step 3：A and B is mixed again, powder of the volume ratio for 1: 1 absorption resin of sodium polyacrylate is added into mixtureEnd, and be well mixed, obtain final mixing encapsulant.
Step 4：In use, equably being scratched encapsulant on impervious test piece side with triangular knife, thickness should be 1~2mm；
Step 5：Put specimen sleeve and be pressed into test specimen, specimen sleeve should be made to be flushed with die trial bottom；
Step 6：Load Anti-leakage instrument to be pressurizeed；
Step 7：Open Anti-leakage instrument and carry out impermeability test.
It is above the exemplary embodiments of the present invention, specific implementation not limited to this of the invention.