CN104198684A - System and method for testing transmission performance of concrete - Google Patents
System and method for testing transmission performance of concrete Download PDFInfo
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- CN104198684A CN104198684A CN201410439247.3A CN201410439247A CN104198684A CN 104198684 A CN104198684 A CN 104198684A CN 201410439247 A CN201410439247 A CN 201410439247A CN 104198684 A CN104198684 A CN 104198684A
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Abstract
The invention discloses a system and a method for testing the transmission performance of concrete, relates to the field of research and testing on the durability of the concrete, and mainly aims at testing the transmission performance of the concrete under the condition that constant pressure stress is loaded to concrete test blocks. According to the main technical scheme, the system for testing the transmission performance of the concrete comprises a constant pressure stress loading device and a solution circulating supply device, wherein the constant pressure stress loading device is composed of four pull rods, and a lower pressing plate, a limiting valve, a middle pressing plate, a spring, an upper pressing plate, a washer and a nut which sequentially arranged on each pull rod from bottom to top in a sleeving manner; the solution circulating supply device is composed of a solution tank, a constant flow pump, a water tank and three anticorrosion flexible pipes; the distance between each lower pressing plate and the corresponding middle pressing plate is greater than the height of the corresponding concrete test block; one corresponding limiting valve, one corresponding washer and one corresponding nut are arranged in each pull rod; a contact part is arranged below each middle pressing plate; one end of each part is in contact with the lower surface of the corresponding middle pressing plate, and the other end of each part is in the contact with the corresponding concrete test block.
Description
Technical field
The present invention relates to research and the field tests of endurance performance of concrete, be specifically related to a kind of concrete transmission performance test system and method.
Background technology
Concrete performance depends on to a great extent quantity, the size of pore in cement slurry and distributes, the performance at aggregate performance and slurry and aggregate interface.Xoncrete structure unavoidably will be subject to the impact of the external factors such as load and environment in process under arms, and these factors can cause concrete transmission performance to change, thereby affect the permanance of xoncrete structure.
In research concrete performance being affected at the load of carrying out in the past, a prefabricating load of main employing, then after unloading, again concrete is carried out to transporting test, but this kind of method cannot continue the situation of bearing load by simulation concrete in actual environment, thereby the data reliability of test exists larger error.Also having a kind of is that concrete is applied to lasting load, carries out transporting test simultaneously, but by the method, study at present less, main cause is the restriction of charger of being put to the test.Because the shortcoming such as the charger of constant compressive stress exists loading stress level and stability is limited for applying, complex operation step, error are larger, finally can affect the accuracy of test findings, and these chargers apply is all bending load, the sample of stand under load bears these two kinds of distinct load actions of compressive stress and tension in neutral line both sides, cannot simulate the situation of bearing separately constant compressive stress in actual environment, also cannot meet requirements such as being convenient to dismounting, the maintenance of being convenient to change the outfit, accurate measurement.And also there is no at present a kind of solution supply device of continuing to test under load situation concrete transporting applying of being suitable for.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of concrete transmission performance test system and method for testing, and fundamental purpose is in the situation that concrete test block is loaded to constant compressive stress, to test concrete transmission performance.
For achieving the above object, the present invention mainly provides following technical scheme:
On the one hand, the embodiment of the present invention provides a kind of concrete transmission performance test system, and this system comprises: constant compressive stress charger and the solution circulation feeding mechanism of placing concrete test block.
Solution circulation feeding mechanism, comprise a solution tank, a constant flow pump, a water tank and three anticorrosion flexible pipes, solution packs in solution tank and seals, in solution tank, insert two anticorrosion flexible pipes, wherein one connects constant flow pump, the constant flow pump other end is connected to water tank by an anticorrosion flexible pipe, and the other end of water tank connects the anticorrosion flexible pipe of another root that inserts solution tank, forms a loop that makes solution circulation.
The opening of water tank contacts with the concrete test block sealing of placing in constant compressive stress charger, and the loop that makes described solution circulation is closed loop.
Foregoing concrete transmission performance test system, described constant compressive stress charger comprises:
Four pull bars, and sequence from low to uper part is set on lower platen, limit valve, center platen, spring, top board, packing ring and nut on pull bar.
Lower platen is used for placing concrete test block, and the distance between described lower platen and center platen is greater than the height of described concrete test block.
Limit valve, packing ring and nut arrange one on every pull bar, and described limit valve is for fixing center platen, spring and the top board moving down due to gravity before concrete test block that do not add.
A contact component is set below center platen, one end of this contact component contacts with the lower surface of described center platen, the other end contacts with concrete test block, this contact component in pressure process by the compressive stress Transmit evenly of center platen to concrete test block, make concrete test block stressed evenly.
Foregoing concrete transmission performance test system, the contact component in the constant compressive stress charger of described concrete is sphere roller bearing.
The top of sphere roller bearing is that semicircle, bottom are rectangle.
Center platen center position has one to be less than described semicircular groove, and the height of this groove is half of center platen thickness, and is less than described semicircular radius.
The most of embedding in center platen of semicircle of sphere roller bearing also can freely be rotated therein, and rectangle lower surface contacts with concrete test block.
Foregoing concrete transmission performance test system, the contact component in the constant compressive stress charger of described concrete is elastomeric element;
Elastomeric element comprises base and is arranged on the elastic mechanism of this base upper surface; The lower surface of described base fully contacts with described concrete test block; The top of described elastic mechanism contacts with the lower surface of described center platen.
Foregoing concrete transmission performance test system, is provided with strainometer on the pull bar in the constant compressive stress charger of described concrete, and described strainometer is arranged between described center platen and lower platen.
Foregoing concrete transmission performance test system, described spring is disk spring, the quantity on its every pull bar is 40.
Foregoing concrete transmission performance test system, described top board is divided into upper and lower two parts:
The upper surface of the first half is screwed to when minimum the upper surface higher than described four pull bars at described nut;
The latter half have 4 with described four circular holes that pull bar matches.
Foregoing concrete transmission performance test system, described constant compressive stress charger comprises:
Four pull bars, and sequence from low to uper part is set on lower platen, center platen, spring, top board, packing ring and nut on pull bar.
Lower platen is used for placing concrete test block, and the distance between described lower platen and center platen is greater than the height of described concrete test block.
Packing ring and nut arrange one on every pull bar.
On the other hand, the embodiment of the present invention provides a kind of concrete transmission performance test method, is applied to above-mentioned concrete transmission performance test system, and the method comprises:
4 limit valves in constant compressive stress charger are upwards fixed on pull bar as far as possible;
Concrete test block is put between lower platen and center platen, after placing, unclamps limit valve, adjust concrete test block position and allow the contact component lower surface of center platen lower end fully contact concrete test block;
Described constant compressive stress charger is placed on pressure testing machine to the abundant contact testing machine of described top board upper surface top board, the abundant contact testing machine of described lower platen lower platen;
Starting pressure testing machine persistent pressure, until the strain numerical value showing on the strainometer that device pull bar side is pasted reaches pre-provisioning request, stops loading, and controlled pressure testing machine load is stable;
Evenly tighten lentamente 4 nuts, in the process of fastening nut, spring is compressed beginning accumulation of energy gradually, the load that pressure testing machine shows declines gradually, when pressure testing machine load is just 0, constant compressive stress charger is taken off and connected solution circulation feeding mechanism from pressure testing machine;
Assemble described solution circulation feeding mechanism, select a smooth side of concrete test block, the tank seal in described solution circulation feeding mechanism is fixed on this side;
In solution tank, pack into and thereunder place a weighing instrument after solution sealing and record its initial weight, in process of the test, every fixing a period of time, weigh record once, start constant flow pump, solution is circulated in solution circulation feeding mechanism, make solution can continuously contact this concrete side;
Reach after predetermined test period according to testing concrete transmission performance by solution transfer rate and length of penetration.
Foregoing concrete transmission performance test method, describedly comprises according to testing concrete transmission performance by solution transfer rate and length of penetration:
The minimizing speed of calculating solution quality according to experiment of weighing result, obtains solution transfer rate.
Concrete test block is unloaded along installing after one section of horizontal splitting of water tank, by development process test solution length of penetration.
By solution transfer rate and length of penetration, characterize concrete transmission performance.
The constant compressive stress charger of concrete in the concrete transmission performance test system that the embodiment of the present invention provides, by the fixing top board of nut, the elastic deformation accumulation of energy of recycling disk spring, can load to concrete test block the constant compressive stress of large load, simultaneously by the contact component arranging below center platen, make the constant compressive stress that this device loads load more stable, after having adopted limit valve, make the placement of concrete test block more convenient, because whole device is to be formed by four pull bar serial connections, make the one-piece construction of this device simple, be convenient to dismounting and maintenance.And the concrete transmission performance test system that the embodiment of the present invention provides, by the cooperation of constant compressive stress charger and solution circulation feeding mechanism, can simulate the real working condition of the concrete components such as the constant compressive stress of varying level in Practical Project and solution erosion, the concrete transmission performance test method providing in conjunction with the embodiment of the present invention again, makes the data result that this test macro tests out more have project reference value.
Accompanying drawing explanation
The concrete transmission performance test system architecture schematic diagram that Fig. 1 provides for the embodiment of the present invention;
The another kind of concrete transmission performance test system architecture schematic diagram that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the constant compressive stress charger of concrete that Fig. 3 provides for the embodiment of the present invention;
Outboard profile and the vertical view of the constant compressive stress charger sphere roller bearing that Fig. 4 provides for the embodiment of the present invention;
Vertical view and the outboard profile of the constant compressive stress charger center platen that Fig. 5 provides for the embodiment of the present invention;
The constant compressive stress charger of the another kind of concrete structural representation that Fig. 6 provides for the embodiment of the present invention;
The outboard profile of the constant compressive stress charger pull bar that Fig. 7 provides for the embodiment of the present invention;
Vertical view and the outboard profile of the constant compressive stress charger lower platen that Fig. 8 provides for the embodiment of the present invention;
Outboard profile and the vertical view of the constant compressive stress charger top board that Fig. 9 provides for the embodiment of the present invention;
Outboard profile and the vertical view of the constant compressive stress charger limit valve that Figure 10 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail; but drawings and Examples are only all for technical scheme of the present invention is described; wherein the concrete structure of each parts, connected mode etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention or improvement, all should not get rid of outside protection scope of the present invention.
The embodiment of the present invention provides a kind of concrete transmission performance test system, as shown in Figure 1, comprising: constant compressive stress charger and the solution circulation feeding mechanism of placing concrete test block.
The constant compressive stress charger of concrete, as shown in Figure 3, this device comprises: four pull bars 8, and sequence from low to uper part is set on lower platen 9, limit valve 7, center platen 5, spring 4, top board 3, packing ring 2 and nut 1 on pull bar.
Wherein, lower platen 9 is for placing concrete test block, and the distance between described lower platen 9 and middle pressure 5 plates is greater than the height of described concrete test block;
Limit valve 7, packing ring 2 and nut 1 arrange one on every pull bar, and limit valve 7 is for fixing center platen 5, spring 4 and the top board 3 moving down due to gravity before concrete test block that do not add;
A contact component 6 is set below center platen 5, one end of this contact component contacts with the lower surface of described center platen 5, the other end contacts with concrete test block, and this contact component 6, for the compressive stress of center platen being passed to concrete test block in pressure process, makes concrete test block stressed evenly.
Solution circulation feeding mechanism, comprise a solution tank 10, constant flow pump 11, water tank 12 and three anticorrosion flexible pipes 13, solution packs sealing in solution tank 10 into, in solution tank 10, insert two anticorrosion flexible pipes 13, wherein one connects constant flow pump 11, constant flow pump 11 other ends are connected to water tank 12 by an anticorrosion flexible pipe, and the other end of water tank 12 connects the anticorrosion flexible pipe of another root that inserts solution tank 10, forms a loop that makes solution circulation; Wherein the opening of water tank 12 contacts with the concrete test block sealing of placing in constant compressive stress charger, and the loop that makes solution circulation is closed loop.
Constant compressive stress charger in this concrete transmission performance test system can be for above-mentioned concrete constant compressive stress charger, can be also other forms of constant compressive stress charger, the concrete embodiment of the present invention does not limit this.
When this constant compressive stress charger is above-mentioned constant compressive stress charger, the water tank 12 of the solution circulation feeding mechanism in the concrete transmission performance test system that the embodiment of the present invention provides is tightly connected with the concrete test block being placed on this constant compressive stress charger.
The embodiment of the present invention also provides a kind of concrete transmission performance test system, and as shown in Figure 2, the constant compressive stress charger of this concrete is:
Four pull bars 26, and sequence from low to uper part is set on lower platen 27, center platen 25, spring 24, top board 23, packing ring 22 and nut 21 on pull bar; Wherein, lower platen 27 is for placing concrete test block, and the distance between lower platen 27 and center platen 25 is greater than the height of concrete test block, and packing ring 22 and nut 21 arrange one on every pull bar.
Solution circulation feeding mechanism in the concrete transmission performance test system that solution circulation feeding mechanism in this concrete transmission performance test system provides with the aforesaid embodiment of the present invention is identical, is to be also tightly connected by water tank 12 and the concrete test block being placed on this constant compressive stress charger.
As shown in Figure 1, in concrete transmission performance test system, the contact component of the constant compressive stress charger of concrete can be sphere roller bearing, also can be elastomeric element, the concrete embodiment of the present invention does not limit this, as long as it can play one end and contact with concrete test block upper surface, the other end contacts with center platen, when center platen moves downward, and can be by the complete Transmit evenly of compressive stress to concrete test block.
When described contact component is sphere roller bearing, as shown in Figure 4, the top of this sphere roller bearing is that semicircle, bottom are rectangle, at center platen 5 lower surface center positions, there is one to be less than described semicircular groove, as shown in Figure 5, the height of this groove is half of center platen thickness, and be less than described semicircle radius, the most of embedding in center platen 5 of semicircle of sphere roller bearing 6 also can freely be rotated therein, and the sphere roller bearing 6 rectangular lower surfaces in bottom contact with concrete test block upper surface.
When described contact component is elastomeric element, as shown in Figure 6, the contact component arranging below center platen 5 can be an elastomeric element, this elastomeric element comprises base and is arranged on the elastic mechanism of this base upper surface, wherein the lower surface of base fully contacts with concrete test block, and the top of elastic mechanism contacts with the lower surface of center platen 5.
On four pull bars of the constant compressive stress charger of above-mentioned concrete, be provided with strainometer 20, as shown in Figure 3, strainometer 20 is pasted between center platen 5 and lower platen 9.
Further, the constant compressive stress charger of above-mentioned concrete spring used is disk spring, this disk spring has another name called Beile Wei Er packing ring, they are different from general spring, the principal feature of this disk spring is: elastic modulus is high, stroke is short, be used in combination conveniently, maintenance changes the outfit easily and security performance is high, especially can in less space, bear great load.The sex change of disk spring unit volume can be larger, and while particularly adopting stack combinations, due to surface friction drag effect, the effect of impact-absorbing and dissipation energy is obvious.This device is according to after load application range computation, on every pull bar, can use the disk spring stack combinations of 40 40*20.4*1.5*1.15mm to use, but the concrete embodiment of the present invention does not limit this yet, the quantity of disk spring can be set according to concrete user demand, for example 30, or 35 etc.
In the constant compressive stress charger of above-mentioned concrete, the four pull bars 8 respectively circular hole from 9 four angles of lower platen pass, pull bar 8 bottom one section of diameter is greater than the part above it, as shown in Figure 7, and this section is highly less than lower platen 9 thickness half, the circular hole on 9 four angles of lower platen matches with pull bar 8 lower ends, for the aperture of lower part is large, the aperture of upper part is little, as shown in Figure 8, the two uses to reach the effect interfixing after wearing and connecting; Center platen 5 and top board are equipped with circular hole on 3 four angles, aperture is greater than the diameter of pull bar 8 upper parts, limit valve 7, center platen 5, disk spring 4 and top board 3 are passed from the upper end of pull bar 8 successively, be sleeved between four pull bars 8 and can slide up and down, the upper end of pull bar 8 is fixing with packing ring 2 and nut 1, and the upper edge of pull bar 8 is higher than the upper edge of nut 1.
As shown in Fig. 7 and Fig. 9, in Fig. 7, pull bar 8 upper ends have one section of screw thread to match with nut 1, threaded this segment length is less than the overall height of top board 3 in Fig. 9, to guarantee that the upper surface of this device top board 3 and the lower surface of pressure testing machine top board can be permanently connected in pressure process, thereby carry out pressurized operation by means of pressure testing machine.
As shown in Figure 10 and Fig. 7, in Figure 10, the Circularhole diameter at limit valve 7 centers is consistent with the diameter of pull bar 8 upper ends in Fig. 7, and both match, and limit valve 7 can be fixed on pull bar 8 by the screw of a side.
The constant compressive stress charger of concrete in above-mentioned concrete transmission performance test system, nut 1 used is retainer nut.
Based on above-mentioned concrete transmission performance test system, the embodiment of the present invention provides a kind of concrete transmission performance test method, and the method specifically comprises the following steps:
1. 4 limit valves in constant compressive stress charger are upwards fixed on pull bar as far as possible, make distance between lower platen and center platen be greater than the height of concrete test block.
2. concrete test block is put between lower platen and center platen, after placing, unclamps limit valve, adjust concrete test block position and allow the contact component lower surface of center platen lower end fully contact concrete test block.
3. constant compressive stress charger is placed on pressure testing machine to the abundant contact testing machine of the top board upper surface top board of this device, the abundant contact testing machine of the lower platen lower platen of this device.
4. starting pressure testing machine persistent pressure, until the strain numerical value showing on the strainometer that device pull bar side is pasted reaches pre-provisioning request, stops loading, and controlled pressure testing machine makes load stable.
5. evenly tighten lentamente 4 nuts, in the process of fastening nut, disk spring is compressed beginning accumulation of energy gradually, the load that pressure testing machine shows declines gradually, when pressure testing machine load is just 0, disk spring is also just compressed to precalculated position, at this moment just constant compressive stress charger can be taken off and is connected solution circulation feeding mechanism from pressure testing machine.
6. assemble described solution circulation feeding mechanism, select a smooth side of concrete test block, the tank seal in solution circulation feeding mechanism is fixed on this side.
7. in solution tank, pack into after solution sealing, thereunder place a weighing instrument and record its initial weight, in process of the test, every fixing a period of time, weigh record once, start constant flow pump simultaneously, solution is circulated in solution circulation feeding mechanism, and solution can continuously contact this concrete side like this.
8. reach after predetermined test period according to testing concrete transmission performance by solution transfer rate and length of penetration.
Wherein, when testing concrete transmission performance by solution transfer rate and length of penetration, can adopt but be not limited to following method, the method comprises:
The minimizing speed of calculating solution quality according to experiment of weighing result, obtains solution transfer rate;
Concrete test block is unloaded along installing after one section of horizontal splitting of water tank, by development process test solution length of penetration;
By solution transfer rate and length of penetration, characterize concrete transmission performance.
The constant compressive stress charger of concrete that the embodiment of the present invention provides, by the fixing top board 3 of nut 1, the elastic deformation accumulation of energy of recycling disk spring 4, concrete test block is loaded to the constant compressive stress of large load, simultaneously by the contact component 6 arranging below center platen 5, make the constant compressive stress that this device loads load more stable, after having adopted limit valve 7, make the placement of concrete test block more convenient, because whole device is to be formed by four pull bars, 8 serial connections, make the one-piece construction of this device simple, be convenient to dismounting and maintenance.And the concrete transmission performance test system that the embodiment of the present invention provides, by constant compressive stress charger and solution circulation feeding mechanism, match, can simulate the real working condition of the concrete components such as the constant compressive stress of varying level in Practical Project and solution erosion, the concrete transmission performance test method providing in conjunction with the embodiment of the present invention again, makes the data result that this test macro tests out more have project reference value.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a concrete transmission performance test system, is characterized in that, comprising: constant compressive stress charger and the solution circulation feeding mechanism of placing concrete test block;
Solution circulation feeding mechanism, comprise a solution tank, a constant flow pump, a water tank and three anticorrosion flexible pipes, solution packs in solution tank and seals, in solution tank, insert two anticorrosion flexible pipes, wherein one connects constant flow pump, the constant flow pump other end is connected to water tank by an anticorrosion flexible pipe, and the other end of water tank connects the anticorrosion flexible pipe of another root that inserts solution tank, forms a loop that makes solution circulation;
The opening of described water tank contacts with the concrete test block sealing of placing in constant compressive stress charger, and the loop that makes described solution circulation is closed loop.
2. concrete transmission performance test system according to claim 1, is characterized in that, described constant compressive stress charger comprises:
Four pull bars, and sequence from low to uper part is set on lower platen, limit valve, center platen, spring, top board, packing ring and nut on pull bar;
Described lower platen is used for placing concrete test block, and the distance between described lower platen and center platen is greater than the height of described concrete test block;
Described limit valve, packing ring and nut arrange one on every pull bar, and described limit valve is for fixing center platen, spring and the top board moving down due to gravity before concrete test block that do not add;
A contact component is set below described center platen, one end of this contact component contacts with the lower surface of described center platen, the other end contacts with concrete test block, this contact component in pressure process by the compressive stress Transmit evenly of center platen to concrete test block, make concrete test block stressed evenly.
3. concrete transmission performance test system according to claim 2, is characterized in that, the contact component in the constant compressive stress charger of described concrete is sphere roller bearing;
The top of described sphere roller bearing is that semicircle, bottom are rectangle;
Described center platen center position has one to be less than described semicircular groove, and the height of this groove is half of center platen thickness, and is less than described semicircular radius;
The most of embedding in center platen of semicircle of described sphere roller bearing also can freely be rotated therein, and described rectangle lower surface contacts with described test block.
4. concrete transmission performance test system according to claim 2, is characterized in that, the contact component in the constant compressive stress charger of described concrete is elastomeric element;
Described elastomeric element comprises base and is arranged on the elastic mechanism of this base upper surface; The lower surface of described base fully contacts with described concrete test block; The top of described elastic mechanism contacts with the lower surface of described center platen.
5. according to the concrete transmission performance test system described in any one in claim 2-4, it is characterized in that, on the pull bar in the constant compressive stress charger of described concrete, be provided with strainometer, described strainometer is arranged between described center platen and lower platen.
6. concrete transmission performance test system according to claim 5, is characterized in that, described spring is disk spring, and the quantity on its every pull bar is 40.
7. concrete transmission performance test system according to claim 6, is characterized in that, described top board is divided into upper and lower two parts:
The upper surface of the first half is screwed to when minimum the upper surface higher than described four pull bars at described nut;
The latter half have 4 with described four circular holes that pull bar matches.
8. concrete transmission performance test system according to claim 1, is characterized in that, described constant compressive stress charger comprises:
Four pull bars, and sequence from low to uper part is set on lower platen, center platen, spring, top board, packing ring and nut on pull bar;
Described lower platen is used for placing concrete test block, and the distance between described lower platen and center platen is greater than the height of described concrete test block;
Described packing ring and nut arrange one on every pull bar.
9. a concrete transmission performance test method, is applied to the concrete transmission performance test system described in any one in the claims 4-6, it is characterized in that, comprising:
4 limit valves in constant compressive stress charger are upwards fixed on pull bar as far as possible;
Concrete test block is put between lower platen and center platen, after placing, unclamps limit valve, adjust concrete test block position and allow the contact component lower surface of center platen lower end fully contact concrete test block;
Described constant compressive stress charger is placed on pressure testing machine to the abundant contact testing machine of described top board upper surface top board, the abundant contact testing machine of described lower platen lower platen;
Starting pressure testing machine persistent pressure, until the strain numerical value showing on the strainometer that device pull bar side is pasted reaches pre-provisioning request, stops loading, and controlled pressure testing machine load is stable;
Evenly tighten lentamente 4 nuts, in the process of fastening nut, spring is compressed beginning accumulation of energy gradually, the load that pressure testing machine shows declines gradually, when pressure testing machine load is just 0, constant compressive stress charger is taken off and connected solution circulation feeding mechanism from pressure testing machine;
Assemble described solution circulation feeding mechanism, select a smooth side of concrete test block, the tank seal in described solution circulation feeding mechanism is fixed on this side;
In solution tank, pack into and thereunder place a weighing instrument after solution sealing and record its initial weight, in process of the test, every fixing a period of time, weigh record once, start constant flow pump, solution is circulated in solution circulation feeding mechanism, make solution can continuously contact this concrete side;
Reach after predetermined test period according to testing concrete transmission performance by solution transfer rate and length of penetration.
10. method according to claim 9, is characterized in that, describedly according to testing concrete transmission performance by solution transfer rate and length of penetration, comprises:
The minimizing speed of calculating solution quality according to experiment of weighing result, obtains solution transfer rate;
Concrete test block is unloaded along installing after one section of horizontal splitting of water tank, by development process test solution length of penetration;
By solution transfer rate and length of penetration, characterize concrete transmission performance.
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| CN107436271A (en) * | 2017-08-31 | 2017-12-05 | 中南大学 | The research device of wick effect solution transmitting procedure in concrete |
| CN109883926A (en) * | 2019-03-28 | 2019-06-14 | 广西大学 | Biaxial pressure acts on lower concrete chloride ion diffusion test macro and its method |
| CN109883927A (en) * | 2019-03-28 | 2019-06-14 | 广西大学 | Compact-bending Load acts on lower concrete chloride ion diffusion test macro and its method |
| CN110579588A (en) * | 2019-10-23 | 2019-12-17 | 青海民族大学 | device and method for testing durability of concrete |
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| CN109883926A (en) * | 2019-03-28 | 2019-06-14 | 广西大学 | Biaxial pressure acts on lower concrete chloride ion diffusion test macro and its method |
| CN109883927A (en) * | 2019-03-28 | 2019-06-14 | 广西大学 | Compact-bending Load acts on lower concrete chloride ion diffusion test macro and its method |
| CN109883927B (en) * | 2019-03-28 | 2022-06-14 | 广西大学 | System and method for testing concrete chloride ion diffusion performance under action of bending load |
| CN110579588A (en) * | 2019-10-23 | 2019-12-17 | 青海民族大学 | device and method for testing durability of concrete |
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