WO2018090540A1 - 混凝土抗渗试件套及抗渗性能检测装置 - Google Patents
混凝土抗渗试件套及抗渗性能检测装置 Download PDFInfo
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- WO2018090540A1 WO2018090540A1 PCT/CN2017/079284 CN2017079284W WO2018090540A1 WO 2018090540 A1 WO2018090540 A1 WO 2018090540A1 CN 2017079284 W CN2017079284 W CN 2017079284W WO 2018090540 A1 WO2018090540 A1 WO 2018090540A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- test piece
- concrete
- impermeability
- piece sleeve
- chassis
- Prior art date
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 50
- 238000005259 measurement Methods 0.000 title 1
- 238000012360 testing method Methods 0.000 claims abstract description 137
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims description 10
- 230000003487 anti-permeability effect Effects 0.000 claims description 8
- 229920006254 polymer film Polymers 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
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- 239000000839 emulsion Substances 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 239000000945 filler Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000012803 melt mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
Definitions
- the invention relates to the technical field of building material detection, in particular to a concrete impervious test piece sleeve and a seepage resistance detecting device.
- Concrete is a widely used artificial building material in buildings.
- the concrete used in the building is required to have specific impermeability.
- the concrete impermeability meter is mainly used for the test of the impermeability of concrete and the determination of the impermeability index. It can also be used for the determination and quality inspection of the permeability of building materials, so it is widely used in the fields of production, construction, design, teaching and research. .
- the traditional anti-seepage instrument comes with an anti-seepage test piece set.
- This kind of sealing material is easy to leak when water is pressurized, the test success rate is low, and such materials need to be melted at high temperature before use.
- the operation is cumbersome. Paraffin decomposes harmful substances in the heating process to pollute the environment and affect the operator's body. health.
- the present invention overcomes the deficiencies of the prior art and provides a concrete impervious test piece sleeve and an impermeability detecting device.
- a concrete impermeability test piece sleeve wherein the concrete impermeability test piece sleeve is a hollow structure, and the hollow A micro-expansion sealing layer is disposed between the hollow inner wall of the structure and the impermeability test piece.
- the micro-expansion sealing layer is disposed between the anti-seepage test piece and the anti-seepage test piece sleeve, and generates micro-expansion during the test process to increase the binding force to the test piece, thereby ensuring the tightness of the anti-seepage test piece and the anti-seepage test piece set.
- the sealing effectively reduces the water seepage around the impermeability test piece, improves the sealing effect, is simple and easy to operate, does not require heating, and has no pollution to the environment.
- the concrete impervious test piece sleeve is a hollow cylindrical structure.
- the impervious test piece sleeve adopts a cylindrical structure with the upper circumference and the lower circumference to replace the traditional round width and narrow circular table structure.
- the reprocessing process of sampling concrete core samples facilitates the operation of the inspectors, reduces the labor intensity of the inspectors, and avoids the distortion or failure of the test results due to the difference between the impermeability of the core sample and the cast-in-place concrete due to the test operation.
- the detection cycle is shortened.
- the concrete impervious test piece sleeve can be used not only in existing buildings, but also in the testing of concrete test pieces used in new buildings, and the concrete of the new building can be directly formed into a cylindrical impermeability test piece. Just fine.
- one end of the concrete impervious test piece sleeve is provided with a ring shoulder, and the ring shoulder is provided with evenly distributed bolt holes in the circumferential direction.
- the impervious test piece sleeve is connected to the chassis bolt on the anti-permeability meter through a bolt hole on the shoulder of the ring to be fixed to the upper portion of the chassis.
- the cylindrical structure is integrally formed with the annular shoulder. The process is simple, the production is convenient, and the consumables are small.
- the annular shoulder is provided with six evenly distributed bolt holes in the circumferential direction.
- the concrete impervious test piece sleeve is fastened to the upper portion of the chassis by six bolt connections.
- the size of the concrete impervious test piece is matched to the size of the concrete impervious test piece.
- the concrete impermeability test piece of the existing building can be pressed into the impermeability test without secondary casting. Inside the kit.
- the micro-expansion sealing layer is a permeable crystalline waterproof structure formed by a polymer film layer and a cement hardened body that penetrate each other.
- the permeable crystalline waterproof structure can be firmly bonded to the outer layer of cement and other materials, and the penetration depth is small, and the impermeability of the test piece is not affected.
- the micro-expansion sealing layer further comprises an expanding material, which can cause micro-expansion during the hydration process of the inorganic powder to increase the binding force of the anti-seepage test piece.
- the micro-expansion sealing layer has good sealing property and bonding strength, and improves the sealing property and pressure resistance of the impermeability test.
- the anti-seepage performance detecting device of the concrete impermeability test piece sleeve comprising: an anti-permeability meter, a chassis and a permeation test piece sleeve, wherein the chassis is disposed on the top of the anti-permeability meter, and the anti-seepage test piece
- the sleeve is fastened to the upper part of the chassis by bolting.
- the chassis is provided with six test positions. Impermeability can be tested simultaneously for 6 impermeability test pieces.
- the six test positions are arranged in two rows and three columns along the length of the chassis.
- the micro-expansion sealing layer is disposed between the anti-seepage test piece and the anti-seepage test piece sleeve, and generates micro-expansion during the test process to increase the binding force to the test piece, thereby ensuring the tightness of the anti-seepage test piece and the anti-seepage test piece set.
- the sealing effectively reduces the water seepage around the impermeability test piece, improves the sealing effect, is simple and easy to operate, does not require heating, and has no pollution to the environment.
- the impervious test piece sleeve adopts a cylindrical structure with the upper circumference and the lower circumference to replace the traditional round width and narrow circular table structure.
- it is not necessary to cast, demould and maintain the core sample of the on-site core, simplifying Sampling the re-machining process of the concrete core sample to facilitate the operation of the inspection personnel and reduce the inspection personnel
- the labor intensity also avoids the distortion or failure of the test results due to the difference between the test operation and the impermeability of the core sample and the cast-in-place concrete.
- the test cycle is shortened because the core sample does not need to be reshaped and cured.
- the concrete impervious test piece sleeve can be used not only in existing buildings, but also in the testing of concrete test pieces used in new buildings, and the concrete of the new building can be directly formed into a cylindrical impermeability test piece. Just fine.
- the cylindrical structure and the annular shoulder are integrally formed, the process is simple, the production is convenient, and the consumables are small.
- Figure 1 is a schematic view showing the molding of the impermeability test piece of the present invention
- Figure 2 is a perspective view of the impervious test piece sleeve of the present invention.
- Fig. 3 is a plan view showing the apparatus for detecting impermeability of the present invention.
- a concrete impervious test piece set 1 is a hollow cylindrical structure, the cylindrical structure is integrally formed, and the size and impermeability of the impervious test piece set 1
- the dimensions of the test piece 2 match.
- Aggregate a granular loose material that acts as a skeleton or filler in concrete.
- the aggregate particle size is aggregate. The diameter of the granules.
- Most of today's building construction projects use commercial concrete for construction. Under normal circumstances, the aggregate particle size is controlled below 31.5 mm, and the aggregate particle size is small, so the size of the impermeability test piece can be appropriately reduced.
- the size of the impermeability test piece 2 is 150 mm in diameter and 150 mm in height.
- the weight of the test piece is reduced by about 31%, which facilitates the operation of the inspector and effectively reduces Detect the labor intensity of the personnel.
- the size of the impermeability test piece set 1 and its impermeability test piece 2 can be adjusted according to the actual condition of the aggregate particle size.
- the diameter of the cylindrical structure of the impervious test piece set 1 matched with the size of the impermeability test piece 2 was 170 mm, and the thickness of the impervious test piece set 1 was 8 mm.
- the micro-expansion sealing layer 3 is disposed between the impermeability test piece 2 and the impermeability test piece set 1.
- the micro-expansion sealing layer 3 is a permeable crystalline waterproof structure formed by a polymer film layer and a cement hardened body which are interpenetrated, and the micro-expansion sealing layer 3 is mainly composed of a hydrophobic silicon-oxygen structural polymer, and is highly permeable.
- the solvent is the carrier, and the active ingredient can penetrate into the micro cracks in the outer layer cement of the anti-seepage test piece 2 and generate a chemical reaction, and firmly bond with the outer layer cement and other materials to form a layer of crystalline dense waterproof layer, which penetrates.
- the depth is within 2mm of the surface of the impervious test piece and does not affect the impermeability of the test piece.
- the organic polymer emulsion in the K11 waterproof coating liquid material loses water to become a film layer with cohesiveness and continuity.
- the cement absorbs water in the emulsion and hardens, and the polymer film layer and the cement hardened body penetrate each other and firmly bond into each other. A sturdy waterproof layer.
- the micro-expansion sealing layer 3 is further added with a micro-expansion agent, and an appropriate amount of the micro-expansion agent generates micro-expansion during the hardening process of the cement to increase the binding force of the anti-seepage test piece 2.
- the micro-expansion material has better sealing property and bonding strength, and improves the sealing property and pressure resistance of the anti-seepage test. After the test, the compressive performance can reach 2.0 Mpa or more.
- One end of the impervious test piece sleeve 1 is provided with a ring shoulder 4, the ring shoulder 4 and the cylinder
- the structure is integrated.
- the thickness of the ring shoulder 4 is 15 mm.
- the annular shoulder 4 is provided with six bolt holes 5 evenly distributed in the circumferential direction.
- the anti-seepage performance detecting device of the concrete impermeability test piece sleeve of the above embodiment comprises: an anti-permeability meter 6, a chassis 7 and an anti-seepage test piece set 1, and the chassis 7 is provided on the anti-permeability tester At the top 6, a test position is set on the chassis 7. After the impermeability test piece 2 is pressed into the anti-seepage test piece set 1, it is placed in the test position on the chassis 7 of the anti-permeability meter 6, and the anti-seepage test piece set 1 passes through the bolt hole 5 on the annular shoulder 4 and resists The chassis 7 on the permeator 6 is bolted to be fixed in the test position on the upper portion of the chassis 7.
- the chassis 7 is uniformly provided with six test positions, and the six test positions are arranged in two rows and three columns along the longitudinal direction of the chassis 6.
- the water pressure in the test can be read on the digital water pressure gauge 8 on the tank surface of the impermeability meter 6.
- Step 1 The core sample with no obvious defects is made into a cylinder with a diameter of 150 mm and a height of 150 mm as the impermeability test piece 2, and it is preferable to make 6 impermeability test pieces 2 for each group.
- Step 2 Clean the surface of the impervious test piece 2, and pre-wet the side of the impermeability test piece 2 with clean water to keep the side moist, but no clear water.
- Step 3 Dispose the micro-expansion sealing layer 3 according to the design ratio, mix thoroughly to a paste without precipitation, and place it for five minutes, then perform second stirring for use.
- Step 4 uniformly apply the cream, that is, the micro-expansion sealing layer 3, to the side of the impermeability test piece 2, and apply it in three passes. After the brushing is repeated, after the preliminary drying (interval time 2-4 hours), the thickness of the micro-expanded sealing layer 3 which is applied three times is about 1.5-2 mm.
- Step 5 When the anti-seepage test piece 2 is applied to the third pass, the cavity of the impervious test piece set 1 is simultaneously coated, that is, the hollow inner wall of the cylindrical body is painted.
- Step 6 The impermeability test piece 2 is pressed into the anti-seepage test piece set 1 by a pressurizing device, and the anti-seepage test is performed after standing for 48 hours.
- Step 7 The impervious test piece sleeve 1 with the impermeability test piece 2 is mounted on the test position on the chassis 7, and the nut is connected to the test position bolt through the bolt hole 5 on the ring shoulder 4.
- Step 8 Open the impermeability meter 6 for the impermeability test.
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
一种混凝土抗渗试件套(1),所述混凝土抗渗试件套(1)为中空结构,所述中空结构的中空内壁与抗渗试件(2)之间设有微膨胀密封层(3)。微膨胀密封层(3)设于抗渗试件(2)与抗渗试件套(1)之间,在试验过程中产生微膨胀,增大对试件的束缚力,保证了抗渗试件(2)与抗渗试件套(1)的紧密密封,有效减少了抗渗试验周边渗水的情况,提升密封效果,操作简单易行,无需加热,对环境无污染。
Description
本发明涉及建筑材料检测技术领域,尤其是一种混凝土抗渗试件套及抗渗性能检测装置。
混凝土是在建筑中被广泛使用的人工建材,对于某些建筑来讲,要求建筑物使用的混凝土具有特定的抗渗性能。混凝土抗渗仪主要用于混凝土抗渗性能的试验和抗渗标号的测定,同时也可利用它做建筑材料透气性的测定和质量检查,因此被广泛应用于生产、施工、设计、教研等领域。传统的抗渗仪自带抗渗试件套,将混凝土抗渗试件压入抗渗试件套前,需要在抗渗试件的外侧面上涂抹密封层,涂抹密封层的目的是使抗渗试件的外侧面与抗渗试件套内壁完全密封,使其在检测施加水压过程中不会出现边际渗漏的现象。传统的常用的涂抹密封层的方法是:用石蜡与松香的融化混合物涂抹或者用三角刀将黄油与滑石粉混合物均匀地刮涂在抗渗试件外侧面。这类密封材料在注水加压时易漏水,试验成功率较低,并且这类材料需要经过高温熔化后才能使用,操作繁琐,石蜡在加热过程中分解出有害物质污染环境,影响操作人员的身体健康。
发明内容
基于此,本发明在于克服现有技术的缺陷,提供一种混凝土抗渗试件套及抗渗性能检测装置。
其技术方案如下:
一种混凝土抗渗试件套,所述混凝土抗渗试件套为中空结构,所述中空
结构的中空内壁与抗渗试件之间设有微膨胀密封层。微膨胀密封层设于抗渗试件与抗渗试件套之间,在试验过程中产生微膨胀,增大对试件的束缚力,保证了抗渗试件与抗渗试件套的紧密密封,有效减少了抗渗试件周边渗水的情况,提升密封效果,操作简单易行,无需加热,对环境无污染。
在其中一个实施例中,所述混凝土抗渗试件套为中空的圆柱体结构。抗渗试件套采用上圆周与下圆周一致的圆柱体结构代替传统下宽上窄的圆台结构,在既有建筑物中,无需将现场钻芯的芯样进行浇筑、脱模和养护,简化了取样混凝土芯样的再加工工序,方便检测人员的操作,减轻检测人员的劳动强度,也避免了因试验操作,芯样与现浇混凝土抗渗性之间的差异而导致试验结果失真或失败;同时由于芯样无需再次成型养护,缩短了检测周期。同样,所述混凝土抗渗试件套不仅可以运用于既有建筑中,还可以推广运用于新建筑的混凝土试件的检测中,只需将新建筑的混凝土直接成型为圆柱形抗渗试件即可。
在其中一个实施例中,所述混凝土抗渗试件套的一端端部设有圆环凸肩,所述圆环凸肩沿圆周方向设有均匀分布的螺栓孔。抗渗试件套通过圆环凸肩上的螺栓孔与抗渗仪上的底盘螺栓连接,使其固定于底盘上部。在其中一个实施例中,所述圆柱体结构与圆环凸肩一体成型。工艺简单,制作方便,耗材少。
在其中一个实施例中,所述圆环凸肩沿圆周方向设有六个均匀分布的螺栓孔。所述混凝土抗渗试件套通过六个螺栓连接紧固于底盘上部。
在其中一个实施例中,所述混凝土抗渗试件套的尺寸与混凝土抗渗试件的尺寸相匹配。使既有建筑混凝土抗渗试件不经过二次浇注即可压入抗渗试
件套内。
在其中一个实施例中,所述微膨胀密封层为相互贯穿的聚合物膜层和水泥硬化体形成的渗透结晶型防水结构。渗透结晶型防水结构可与外层水泥及其他材料粘结牢固,其渗透深度小,不影响试件的抗渗性能。并且微膨胀密封层中还包括膨胀材料,可以使无机粉料水化过程中产生为微膨胀,增大对抗渗试件的束缚力。微膨胀密封层具有较好的密封性和粘结强度,提高了抗渗试验的密封性和抗压能力。
采用如上任一实施例的混凝土抗渗试件套的抗渗性能检测装置,包括:抗渗仪、底盘和抗渗试件套,所述底盘设于抗渗仪顶部,所述抗渗试件套通过螺栓连接紧固于底盘上部。
在其中一个实施例中,所述底盘上均布有6个试位。可供6个抗渗试件同时检测抗渗性能。
在其中一个实施例中,所述6个试位沿底盘长度方向呈2行3列排列。
本发明的有益效果在于:
微膨胀密封层设于抗渗试件与抗渗试件套之间,在试验过程中产生微膨胀,增大对试件的束缚力,保证了抗渗试件与抗渗试件套的紧密密封,有效减少了抗渗试件周边渗水的情况,提升密封效果,操作简单易行,无需加热,对环境无污染。
抗渗试件套采用上圆周与下圆周一致的圆柱体结构代替传统下宽上窄的圆台结构,在既有建筑中,无需将现场钻芯的芯样进行浇筑、脱模和养护,简化了取样混凝土芯样的再加工工序,方便检测人员的操作,减轻检测人员
的劳动强度,也避免了因试验操作,芯样与现浇混凝土抗渗性之间的差异而导致试验结果失真或失败;同时由于芯样无需再次成型养护,缩短了检测周期。同样,所述混凝土抗渗试件套不仅可以运用于既有建筑中,还可以推广运用于新建筑的混凝土试件的检测中,只需将新建筑的混凝土直接成型为圆柱形抗渗试件即可。
圆柱体结构与圆环凸肩一体成型,工艺简单,制作方便,耗材少。
图1为本发明抗渗试件装模示意图;
图2位本发明抗渗试件套立体图;
图3为本发明抗渗性能检测装置平面示意图。
附图标记说明:1-混凝土抗渗试件套、2-抗渗试件、3-微膨胀密封层、4-圆环凸肩、5-螺栓孔、6-抗渗仪、7-底盘、8-数显水压表。
为使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及具体实施方式,对本发明进行进一步的详细说明。应当理解的是,此处所描述的具体实施方式仅用以解释本发明,并不限定本发明的保护范围。
如图1-2所示,一种混凝土抗渗试件套1,所述抗渗试件套1为中空的圆柱体结构,圆柱体结构一体成型,抗渗试件套1的尺寸与抗渗试件2的尺寸相匹配。骨料,即在混凝土中起骨架或填充作用的粒状松散材料。骨料作为混凝土中的主要原料,在建筑物中起骨架和支撑作用,骨料粒径则为骨料颗
粒的直径。现今大部分房屋建筑工程采用商品混凝土进行施工,通常情况下骨料粒径控制在31.5mm以下,骨料粒径小,因此可以适当减小抗渗试件尺寸。本实施例中,抗渗试件2的尺寸为直径150mm,高度150mm,代替传统的185mm×175mm×150mm的圆台试件,试件重量减少了31%左右,方便了检测人员的操作,有效减轻检测人员的劳动强度。而且在实际工程运用中,可以根据骨料粒径的实际情况调整抗渗试件套1的及其抗渗试件2的尺寸。与抗渗试件2尺寸相匹配的抗渗试件套1的圆柱结构外径为170mm,抗渗试件套1的厚度为8mm。
微膨胀密封层3设于抗渗试件2与抗渗试件套1之间。微膨胀密封层3为相互贯穿的聚合物膜层和水泥硬化体形成的渗透结晶型防水结构,所述微膨胀密封层3以憎水性硅氧结构聚合物为主要成分,配以具极强渗透性的溶剂为载体,其活性成分可以渗入抗渗试件2外层水泥中的微细裂缝并产生化学反应,与外层水泥及其他材料粘结牢固,形成一层结晶致密的防水层,其渗透深度为抗渗试件表面的2mm范围内,不影响试件的抗渗性能。微膨胀密封层3的材料配比为:K11防水涂料液料:超细水泥:微膨胀剂=9:25:2.8。K11防水涂料液料中的有机聚合物乳液失水成为具有粘结性和连续性的膜层,水泥吸收乳液中的水而硬化,聚合物膜层与水泥硬化体相互贯穿而牢固的粘结成一个坚固的防水层。所述微膨胀密封层3还加入了微膨胀剂,适量微膨胀剂在水泥硬化过程中产生微膨胀,增大对抗渗试件2的束缚力。这种微膨胀材料具有较好的密封性和粘结强度,提高了抗渗实验的密封性和抗压能力,经试验,抗压性能可达到2.0Mpa以上。
所述抗渗试件套1的一端端部设有圆环凸肩4,所述圆环凸肩4与圆柱体
结构一体成型。圆环凸肩4的厚度为15mm。所述圆环凸肩4沿圆周方向设有均匀分布的六个螺栓孔5。
实施例2
如图3所示,采用如上实施例的混凝土抗渗试件套的抗渗性能检测装置,包括:抗渗仪6、底盘7和抗渗试件套1,所述底盘7设于抗渗仪顶部6,底盘7上设试位。当抗渗试件2压入抗渗试件套1后,放置于抗渗仪6的底盘7上的试位中,抗渗试件套1通过圆环凸肩4上的螺栓孔5与抗渗仪6上的底盘7螺栓连接,使其固定于底盘7上部的试位中。
所述底盘7上均布有6个试位,所述6个试位沿底盘6长度方向呈2行3列排列。试验中的水压可在抗渗仪6的箱体面上的数显水压表8读数。
采用上述抗渗性能检测装置的方法,具体步骤如下:
步骤一:将无明显缺陷的芯样制作成直径150mm,高度150mm的圆柱体作为抗渗试件2,每组做6个抗渗试件2为宜。
步骤二:清理抗渗试件2表面,并用清水预湿抗渗试件2侧面,保持侧面湿润,但无明水。
步骤三:按设计配比配置微膨胀密封层3,调匀至无沉淀的膏状,放置五分钟后进行二次搅拌以备用。
步骤四:用毛刷将膏状物即微膨胀密封层3均匀涂抹于抗渗试件2侧面,分三遍涂刷。涂刷一遍后待初步干固后(间隔时间2-4小时)再涂下一遍,三遍涂刷的微膨胀密封层3的厚度为1.5-2mm左右。
步骤五:当对抗渗试件2涂刷到第三遍时,要同时涂刷抗渗试件套1的模腔,即涂刷圆柱体中空内壁。
步骤六:用加压装置将抗渗试件2压入抗渗试件套1内,静置48h后进行抗渗试验。
步骤七:将带有抗渗试件2的抗渗试件套1安装于底盘7上的试位上,通过圆环凸肩4上的螺栓孔5,采用螺母与试位螺栓连接。
步骤八:开启抗渗仪6进行抗渗试验。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (10)
- 一种混凝土抗渗试件套,其特征在于,所述混凝土抗渗试件套为中空结构,所述中空结构的中空内壁与抗渗试件之间设有微膨胀密封层。
- 根据权利要求1所述的混凝土抗渗试件套,其特征在于,所述混凝土抗渗试件套为中空的圆柱体结构。
- 根据权利要求2所述的混凝土抗渗试件套,其特征在于,所述混凝土抗渗试件套的一端端部设有圆环凸肩,所述圆环凸肩沿圆周方向设有均匀分布的螺栓孔。
- 根据权利要求3所述的混凝土抗渗试件套,其特征在于,所述圆柱体结构与圆环凸肩一体成型。
- 根据权利要求4所述的混凝土抗渗试件套,其特征在于,所述混凝土抗渗试件套的尺寸与混凝土抗渗试件的尺寸相匹配。
- 根据权利要求1所述的混凝土抗渗试件套,其特征在于,所述微膨胀密封层为相互贯穿的聚合物膜层和水泥硬化体形成的渗透结晶型防水结构。
- 根据权利要求1所述的混凝土抗渗试件套,其特征在于,所述微膨胀密封层的渗透深度为抗渗试件表面的2mm深度范围内。
- 采用如权利要求1-7任一项所述的混凝土抗渗试件套的抗渗性能检测装置,其特征在于,包括:抗渗仪、底盘和所述混凝土抗渗试件套,所述底盘设于抗渗仪顶部,所述混凝土抗渗试件套通过螺栓连接紧固于底盘上部。
- 根据权利要求8所述的抗渗性能检测装置,其特征在于,所述底盘上 均布有6个试位。
- 根据权利要求9所述的抗渗性能检测装置,其特征在于,所述6个试位沿底盘长度方向呈2行3列排列。
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