CN205192923U - Instrument is appraised to concrete durability under having pressure condition - Google Patents
Instrument is appraised to concrete durability under having pressure condition Download PDFInfo
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- CN205192923U CN205192923U CN201521046811.1U CN201521046811U CN205192923U CN 205192923 U CN205192923 U CN 205192923U CN 201521046811 U CN201521046811 U CN 201521046811U CN 205192923 U CN205192923 U CN 205192923U
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- 238000012360 testing method Methods 0.000 claims abstract description 84
- 239000012466 permeate Substances 0.000 claims abstract description 35
- 238000011156 evaluation Methods 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 9
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 16
- 230000035515 penetration Effects 0.000 abstract description 11
- 230000003628 erosive effect Effects 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
本实用新型公开了一种有压情况下混凝土耐久性评价仪器，目的在于，真实反映在有压环境中，侵蚀性液体的渗透对混凝土的强度以及变形影响，所采用的技术方案为：包括水平设置的基座(1)，基座(1)上设置有用于放置试件的试件箱(2)，试件箱(2)的侧面开设有渗透液出口(3)，试件箱(2)的顶面设有开口，开口上设置有施压组件(5)，施压组件(5)连接有支撑组件(6)和负重组件(7)；所述负重组件(7)能够将荷载通过施压组件(5)传递到试件的上表面，试验时试件的上表面注有渗透液。
The utility model discloses a concrete durability evaluation instrument under pressure. The purpose is to truly reflect the influence of the penetration of erosive liquid on the strength and deformation of concrete in a pressure environment. The adopted technical scheme is: The base (1) is set, the base (1) is provided with a test piece box (2) for placing the test piece, the side of the test piece box (2) is provided with a permeate outlet (3), the test piece box (2) ) is provided with an opening on the top surface, the opening is provided with a pressure component (5), and the pressure component (5) is connected with a support component (6) and a load component (7); the load component (7) can pass the load through The pressure-applying component (5) is transferred to the upper surface of the test piece, and the upper surface of the test piece is injected with penetrating liquid during the test.
Description
技术领域technical field
本实用新型属于土工试验技术领域，具体涉及一种有压情况下混凝土耐久性评价仪器。The utility model belongs to the technical field of geotechnical tests, in particular to a concrete durability evaluation instrument under pressure.
背景技术Background technique
目前对于有压状态下侵蚀性液体的渗透对混凝土的强度以及变形影响的测量的试验设备和量测方法较为粗放，所得结果难以真实的反映不同受压状态下，侵蚀性液体的渗透对混凝土的变形以及强度的影响。At present, the test equipment and measurement methods for measuring the impact of the penetration of aggressive liquids on the strength and deformation of concrete under pressure are relatively extensive, and the results obtained are difficult to truly reflect the impact of penetration of aggressive liquids on concrete under different pressure conditions. deformation and strength effects.
发明内容Contents of the invention
为了解决现有技术中的问题，本实用新型提出一种能够真实反映在有压环境中，侵蚀性液体的渗透对混凝土的强度以及变形影响的有压情况下混凝土耐久性评价仪器。In order to solve the problems in the prior art, the utility model proposes a concrete durability evaluation instrument under pressure that can truly reflect the impact of the penetration of aggressive liquid on the strength and deformation of concrete in a pressure environment.
为了实现以上目的，本实用新型所采用的技术方案为：包括水平设置的基座，基座上设置有用于放置试件的试件箱，试件箱的侧面开设有渗透液出口，试件箱的顶面设有开口，开口上设置有施压组件，施压组件连接有支撑组件和负重组件；所述负重组件能够将荷载通过施压组件传递到试件的上表面，试验时试件的上表面注有渗透液。In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: it includes a base set horizontally, a test piece box for placing the test piece is arranged on the base, a permeate outlet is opened on the side of the test piece box, and the test piece box There is an opening on the top surface of the top surface, and a pressure applying component is arranged on the opening, and the pressure applying component is connected with a support component and a load-bearing component; the load-bearing component can transmit the load to the upper surface of the specimen through the pressure applying component, and the test The upper surface is filled with penetrant.
所述的施压组件包括设置在试件箱顶面开口的施压板，试验时施压板与试件的上表面接触，施压板连接有竖直设置的施压杆；所述支撑组件包括水平设置并与施压杆连接的水平支撑，水平支撑连接有竖直设置的竖向支撑，竖向支撑与基座固连；所述负重组件包括水平设置并与施压杆连接的水平负重，水平负重一端铰接有竖直设置的竖向负重，竖向负重与基座固连，水平负重另一端连接有荷载组件。The pressure applying assembly includes a pressure applying plate arranged on the opening of the top surface of the test piece box, the pressure applying plate is in contact with the upper surface of the test piece during the test, and the pressure applying plate is connected with a vertically arranged pressing rod; the support assembly It includes a horizontal support arranged horizontally and connected with a pressure bar, the horizontal support is connected with a vertical support arranged vertically, and the vertical support is fixedly connected with the base; , one end of the horizontal load is hinged to a vertically arranged vertical load, the vertical load is fixedly connected to the base, and the other end of the horizontal load is connected to a load assembly.
所述的水平支撑上开设有用于安装施压杆的通孔，所述施压杆上开设有用于安装水平负重的通槽，所述水平负重的距地高度大于水平支撑的距地高度。The horizontal support is provided with a through hole for installing a pressure rod, and the pressure rod is provided with a through groove for installing a horizontal load, and the height of the horizontal load from the ground is greater than that of the horizontal support.
所述的通槽的竖向尺寸大于水平负重的厚度，能够使水平负重在通槽内竖向移动。The vertical dimension of the through groove is larger than the thickness of the horizontal load, which can make the horizontal load move vertically in the through groove.
所述的水平支撑通过螺栓与竖向支撑连接，通过所述螺栓能够调节水平支撑的高度。The horizontal support is connected with the vertical support through bolts, and the height of the horizontal support can be adjusted by the bolts.
所述的水平支撑上设置有用于安装千分表的千分表固定杆，千分表能够测量试件上表面的渗透液的渗透量。The horizontal support is provided with a dial gauge fixing rod for installing a dial gauge, and the dial gauge can measure the penetration amount of the penetrating liquid on the upper surface of the test piece.
所述的基座上设置有渗透液收集槽，渗透液收集槽与渗透液出口连接。A permeate collection tank is arranged on the base, and the permeate collection tank is connected with the permeate outlet.
所述的渗透液收集槽底部设有渗透液导出管，渗透液导出管上设有阀门，渗透液收集槽上沿竖直方向设置有刻度线。The bottom of the permeate collection tank is provided with a permeate outlet pipe, the permeate outlet pipe is provided with a valve, and the permeate collection tank is provided with graduation marks along the vertical direction.
所述的试件箱上设置有能够检测试件承受压力的压力传感器和显示压力值的压力显示屏。The test piece box is provided with a pressure sensor capable of detecting the pressure of the test piece and a pressure display screen for displaying the pressure value.
在放入试件后所述试件箱与施压组件间，以及试件与渗透液出口间均设防渗材料。After the test piece is put in, anti-seepage materials are arranged between the test piece box and the pressure-applying component, and between the test piece and the permeate outlet.
与现有技术相比，本实用新型利用杠杆原理将负重组件上所施加的荷载，传递到施压组件上，再通过施压组件均匀的施加在试件上表面，并且在试件的上表面注入渗透液体，将试件固定于一个相对密闭的试件箱内，设定施压强度，根据实验渗透腐蚀时间的要求进行稳定渗透腐蚀，到达预订时间后，测量出渗透量，并取出试件测出试件的变形以及抗压强度，以此来评价混凝土在不同的受压状态中，侵蚀性液体对混凝土的渗透性、强度以及变形的影响。本实用新型将混凝土受压与侵蚀性液体的渗透侵蚀作用结合在一起，使得对有压状态下侵蚀性液体对混凝土的渗透性、强度以及变形的影响的评价更加真实和精细。Compared with the prior art, the utility model uses the principle of leverage to transfer the load applied on the load-bearing assembly to the pressure-applying assembly, and then evenly applies the load on the upper surface of the test piece through the pressure-applying assembly, and on the upper surface of the test piece Inject penetrating liquid, fix the test piece in a relatively airtight test piece box, set the pressure intensity, conduct stable penetrating corrosion according to the requirements of the experimental penetrating corrosion time, and measure the penetration amount after reaching the scheduled time, and take out the test piece The deformation and compressive strength of the test piece are measured to evaluate the impact of the aggressive liquid on the permeability, strength and deformation of the concrete in different compression states. The utility model combines the pressure of concrete and the seepage and erosion of erosive liquid, so that the evaluation of the impact of erosive liquid on the permeability, strength and deformation of concrete under pressure is more real and precise.
进一步，施压板和施压杆的分离设计，支撑组件、负重组件的组装设计，使得试验操作更加方便简洁。施压杆、支撑组件、负重组件的相互嵌套连接设计，保证了试验过程中压力施加的稳定性，提高了试验的精准性。本实用新型在载荷组件上施加载荷，使用杠杆原理，通过负重组件将竖向荷载传递到施压杆，再通过施压板均匀的施加于试件上表面，最大限度的模拟了真实环境中混凝土的受压状态，提高了试验的可靠性。Further, the separation design of the pressure plate and the pressure rod, and the assembly design of the support component and the load-bearing component make the test operation more convenient and concise. The mutual nesting and connection design of the pressure rod, the support component and the load-bearing component ensures the stability of the pressure application during the test and improves the accuracy of the test. The utility model applies a load on the load assembly, uses the lever principle, transmits the vertical load to the pressure rod through the load assembly, and then applies the pressure plate evenly to the upper surface of the test piece, which simulates the concrete in the real environment to the greatest extent. The pressure state improves the reliability of the test.
更进一步，施压杆上安装水平负重的通槽竖向尺寸大于水平负重的厚度，水平负重能够在通槽内竖向移动。Furthermore, the vertical dimension of the through slot for installing the horizontal load on the pressure bar is greater than the thickness of the horizontal load, and the horizontal load can move vertically in the through slot.
进一步，试件箱密封，最大程度上模拟了混凝土在实际工程中的受力状态，留有渗透液出口，易于观察渗透状态，最大限度的模拟真实的侵蚀环境，保证了本实用新型装置的稳定性和可靠性。试件箱上设置有压力传感器，能够实时检测并显示试件受压值，提高了试验的精确性。Further, the test piece box is sealed, which simulates the stress state of concrete in the actual project to the greatest extent, and leaves an outlet for the permeate, which is easy to observe the permeation state, simulates the real erosion environment to the greatest extent, and ensures the stability of the device of the present invention. sex and reliability. The test piece box is provided with a pressure sensor, which can detect and display the pressure value of the test piece in real time, improving the accuracy of the test.
更进一步，渗透液收集槽内沿竖直方向设置有最小刻度为1mm的刻度线，使得试验中更准确的观察试件的渗透状态。Furthermore, a scale line with a minimum scale of 1 mm is set in the vertical direction in the permeate collection tank, so that the permeation state of the test piece can be observed more accurately during the test.
附图说明Description of drawings
图1为实用新型的结构示意图；Fig. 1 is the structural representation of utility model;
图2为施压组件、支撑组件和负重组件的装配效果示意图；Fig. 2 is a schematic diagram of the assembly effect of the pressure-applying component, the supporting component and the load-bearing component;
图3为基座、试件箱、渗透液收集槽和施压板的装配效果示意图；Figure 3 is a schematic diagram of the assembly effect of the base, the test piece box, the permeate collection tank and the pressure plate;
其中，1为基座、2为试件箱、3为渗透液出口、4为渗透液收集槽、5为施压组件、6为支撑组件、7为负重组件、8为施压板、9为施压杆、10为竖向负重、11为水平负重、12为荷载组件、13为竖向支撑、14为水平支撑、15为通槽、16为通孔、17为千分表固定杆、18为渗透液导出管、19为压力显示屏。Among them, 1 is the base, 2 is the test piece box, 3 is the permeate outlet, 4 is the permeate collection tank, 5 is the pressure component, 6 is the support component, 7 is the load component, 8 is the pressure plate, 9 is Pressure bar, 10 is vertical load, 11 is horizontal load, 12 is load assembly, 13 is vertical support, 14 is horizontal support, 15 is through groove, 16 is through hole, 17 is dial indicator fixing rod, 18 It is the permeate outlet pipe, and 19 is the pressure display screen.
具体实施方式detailed description
下面结合具体的实施例和说明书附图对本实用新型作进一步的解释说明。Below in conjunction with specific embodiment and accompanying drawing, the utility model is further explained and illustrated.
参见图1，本实用新型包括水平设置的基座1，基座1上设置有试件箱2，试件箱2前设置有渗透液出口3，渗透液出口3连接渗透液收集槽4，渗透液收集槽底部设有渗透液导出管18，渗透液导出管18设有阀门，能使的收集渗透液更加方便。试件箱2外侧设有压力显示器19和压力传感器，压力显示器19利用传感器的原理，实时显示试件承受的压力。试件箱2顶部设置有试件施压组件5，施压组件5包括施压板8以及施压杆9，施压组件5连接有支撑组件6以及负重组件7，支撑组件6包括竖向支撑13和水平支撑14，负重组件7包括竖向负重10、水平负重11以及荷载组件12，负重组件7的水平向构件高于支撑组件6的水平向构件。Referring to Fig. 1, the utility model comprises a base 1 arranged horizontally, a test piece box 2 is arranged on the base 1, a permeate outlet 3 is arranged in front of the test piece box 2, and the permeate outlet 3 is connected to the permeate collection tank 4, and the infiltration The bottom of the liquid collection tank is provided with a permeate outlet pipe 18, and the permeate outlet pipe 18 is provided with a valve, which can make it more convenient to collect the permeate. A pressure display 19 and a pressure sensor are arranged outside the test piece box 2, and the pressure display 19 uses the principle of the sensor to display the pressure on the test piece in real time. The top of the specimen box 2 is provided with a specimen pressure assembly 5, the pressure assembly 5 includes a pressure plate 8 and a pressure rod 9, the pressure assembly 5 is connected with a support assembly 6 and a load assembly 7, and the support assembly 6 includes a vertical support 13 and a horizontal support 14, the load assembly 7 includes a vertical load 10, a horizontal load 11 and a load assembly 12, the horizontal members of the load assembly 7 are higher than the horizontal members of the support assembly 6.
参见图2，负重组件7中，竖向负重10与基座1刚性连接，竖向负重10与水平负重11之间铰接，荷载组件12与水平负重11之间通过螺栓连接；支撑组件6中竖向支撑13与基座1刚性连接，竖向支撑13与水平支撑14通过两个螺栓固定，能使得水平支撑14可以完全取下或者调节高度。施压杆9上设置有通槽15，通槽15的竖向尺寸为水平负重11厚度的1.5倍，能使得水平负重11在孔内竖向移动，但是限制其的横向移动。水平负重11穿过通槽15与施压杆9连接，水平支撑14上设置有竖向通孔16，施压杆9穿过通孔16与水平支撑14连接，通孔16的尺寸与施压杆9的尺寸一致，能够使施压杆9沿竖向自由活动，但是限制施压杆9的水平方向的移动。水平支撑14前端设有千分表固定杆17，使得千分表可以固定。Referring to Fig. 2, in the load assembly 7, the vertical load 10 is rigidly connected to the base 1, the vertical load 10 and the horizontal load 11 are hinged, and the load assembly 12 and the horizontal load 11 are connected by bolts; The vertical support 13 is rigidly connected to the base 1, and the vertical support 13 and the horizontal support 14 are fixed by two bolts, so that the horizontal support 14 can be completely removed or adjusted in height. The pressure rod 9 is provided with a through groove 15, the vertical dimension of the through groove 15 is 1.5 times of the thickness of the horizontal load 11, which can make the horizontal load 11 move vertically in the hole, but limit its lateral movement. The horizontal load 11 passes through the through groove 15 and is connected with the pressure rod 9. The horizontal support 14 is provided with a vertical through hole 16. The pressure rod 9 passes through the through hole 16 and is connected with the horizontal support 14. The size of the through hole 16 is consistent with the pressure applied. The dimensions of the rods 9 are consistent, so that the pressure rod 9 can freely move vertically, but the movement of the pressure rod 9 in the horizontal direction is restricted. The front end of the horizontal support 14 is provided with a dial gauge fixing rod 17, so that the dial gauge can be fixed.
参见图3，施压板8在试件箱2内仅可以竖向移动，在放入试件后施压板8与试件箱2的接触面做防渗处理。试件箱2内的空间尺寸大于试件箱渗透液出口3，在放入试件后，渗透液出口3周围面与试件之间做防渗处理，能够使试件在承压的状态下保持固定并不漏液。Referring to Fig. 3, the pressure plate 8 can only move vertically in the test piece box 2, and the contact surface between the pressure plate 8 and the test piece box 2 is treated with anti-seepage after the test piece is placed. The space in the test piece box 2 is larger than the penetrant outlet 3 of the test piece box. After the test piece is put in, anti-seepage treatment is done between the surrounding surface of the penetrant outlet 3 and the test piece, so that the test piece can be kept under pressure. Holds securely and does not leak fluid.
参见图1，本实用新型的试件箱2顶部开口，开口内设置有施压板8，施压板8可以在试件箱2内部上下移动，施压板8上设置有施压杆9，施压杆9通过通孔16与支撑组件6连接，负重组件7通过通槽15与施压杆9连接，支撑组件6前段设置有千分表固定杆17，可以通过显示屏19和千分表读出试件承受压强以及竖向变形值。Referring to Fig. 1, the top opening of the test piece box 2 of the present utility model is provided with a pressure applying plate 8 in the opening, the pressure applying plate 8 can move up and down inside the test piece box 2, and the pressure applying plate 8 is provided with a pressure applying rod 9, The pressing rod 9 is connected with the support assembly 6 through the through hole 16, and the load-bearing assembly 7 is connected with the pressing rod 9 through the through groove 15. Read out the pressure and vertical deformation of the specimen.
参见图1和图2，支撑组件6由竖向支撑13、水平支撑14、千分表固定杆17组成，竖向支撑13钢结于基座1，千分表固定杆17与水平支撑14固结，再通过双螺栓与竖向支撑13连接，使得水平支撑14的高度在一定范围内可调节。Referring to Fig. 1 and Fig. 2, the support assembly 6 is composed of a vertical support 13, a horizontal support 14, and a dial gauge fixing rod 17. knot, and then connected with the vertical support 13 by double bolts, so that the height of the horizontal support 14 can be adjusted within a certain range.
参见图1，图2，负重组件7由竖向负重10、水平负重11和荷载组件12组成，荷载组件12通过螺栓与水平负重11连接，水平负重11与竖向负重10铰接，使得水平负重11和荷载组件12可以竖向移动。Referring to Fig. 1, Fig. 2, load assembly 7 is made up of vertical load 10, horizontal load 11 and load assembly 12, and load assembly 12 is connected with horizontal load 11 by bolt, and horizontal load 11 is hinged with vertical load 10, makes horizontal load 11 And load assembly 12 can move vertically.
参见图1，图2，施压杆9通过通孔16与水平支撑14连接，水平负重11通过通槽15与施压杆9连接，使得荷载通过负重组件传递给施压杆9，再通过施压板将压力施加在试件上。Referring to Fig. 1 and Fig. 2, the pressure rod 9 is connected to the horizontal support 14 through the through hole 16, and the horizontal load 11 is connected to the pressure rod 9 through the through groove 15, so that the load is transmitted to the pressure rod 9 through the load assembly, and then through the The pressure plate applies pressure to the test piece.
参见图3，试件箱2前面设置有渗透液出口3，渗透液出口3下设置带有渗透液导管18的渗透液收集槽4，施压板8可以在试件箱内部沿竖向移动。Referring to FIG. 3 , a permeate outlet 3 is provided in front of the test case 2 , and a permeate collection tank 4 with a permeate conduit 18 is provided under the permeate outlet 3 , and the pressure plate 8 can move vertically inside the test case.
本实用新型的具体工作过程：首先将混凝土试件放入试件箱2内，在渗透液出口3的周围与试件接触的范围内做好防渗处理，然后在试件的顶部注入渗透液，放入施压板8，通过荷载组件12上添加负重，通过压力显示屏19显示值调节施压强度，将千分表固定于千分表固定杆17上，设置初始读数并记录，根据实验渗透腐蚀时间的要求进行稳定渗透腐蚀，到达预订时间后，通过千分表得出试件表面的渗透液下降量，得出有压状态下侵蚀性液体对混凝土渗透性的影响，取出试件测量试件的变形以及抗压强度，得到有压状态下侵蚀性液体的渗透对混凝土强度以及变形的影响评价。The specific working process of the utility model: first put the concrete test piece into the test piece box 2, do anti-seepage treatment in the range around the permeate outlet 3 and the test piece, and then inject the permeate on the top of the test piece , put into the pressure applying plate 8, add a load on the load assembly 12, adjust the pressure application intensity through the display value of the pressure display screen 19, fix the dial gauge on the dial gauge fixing rod 17, set the initial reading and record it, according to the experiment Penetration corrosion time is required to carry out stable penetration corrosion. After the predetermined time is reached, the drop of penetrant on the surface of the test piece can be obtained through the dial gauge, and the influence of the aggressive liquid on the permeability of concrete under pressure can be obtained, and the test piece is taken out for measurement. The deformation and compressive strength of the specimens were used to evaluate the impact of the penetration of aggressive liquids on the strength and deformation of concrete under pressure.
本实用新型设置有渗透液收集槽和压力显示屏，利用试件箱以及施压板最大程度的模拟了混凝土受力及有压渗透状态，精细化的反映出有压状态下侵蚀性液体对混凝土的渗透性、变形及强度的影响。本实用新型由负重组件通过施压组件向试件施加荷载，施加荷载过程中，由支撑组件确保施加荷载的稳定性，最终，通过试件的渗透量、变形值以及抗压强度反映出不同受压环境下，不同种类的侵蚀性液体对混凝土的渗透性、变形及强度影响的评价。The utility model is equipped with a penetrating liquid collection tank and a pressure display screen, and uses the test piece box and the pressure plate to simulate the stress and pressure penetration state of the concrete to the greatest extent, and finely reflects the impact of the erosive liquid on the concrete under pressure. The influence of permeability, deformation and strength. In the utility model, the load-bearing component applies the load to the test piece through the pressure-applying component. During the process of applying the load, the support component ensures the stability of the applied load. Finally, the penetration amount, deformation value and compressive strength of the test piece reflect the different loads. Evaluation of the effects of different types of aggressive liquids on the permeability, deformation and strength of concrete under pressure.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445176A (en) * | 2015-12-14 | 2016-03-30 | 榆林学院 | Apparatus for evaluating concrete endurance under pressure |
| CN108918223A (en) * | 2018-07-16 | 2018-11-30 | 辽宁工程技术大学 | A kind of paste filling material laboratory maintenance process of the practical stope environment of simulation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445176A (en) * | 2015-12-14 | 2016-03-30 | 榆林学院 | Apparatus for evaluating concrete endurance under pressure |
| CN105445176B (en) * | 2015-12-14 | 2019-01-15 | 榆林学院 | One kind having concrete durability evaluation appts in the case of pressure |
| CN108918223A (en) * | 2018-07-16 | 2018-11-30 | 辽宁工程技术大学 | A kind of paste filling material laboratory maintenance process of the practical stope environment of simulation |
| CN108918223B (en) * | 2018-07-16 | 2020-09-11 | 辽宁工程技术大学 | Laboratory curing method for paste filling material for simulating actual stope environment |
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