CN101692083A - Quick measuring device for concrete slump and usage method - Google Patents
Quick measuring device for concrete slump and usage method Download PDFInfo
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- CN101692083A CN101692083A CN 200910235543 CN200910235543A CN101692083A CN 101692083 A CN101692083 A CN 101692083A CN 200910235543 CN200910235543 CN 200910235543 CN 200910235543 A CN200910235543 A CN 200910235543A CN 101692083 A CN101692083 A CN 101692083A
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- 239000004567 concrete Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 61
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 6
- 239000011378 shotcrete Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010561 standard procedure Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910001037 White iron Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Abstract
一种混凝土坍落度快速测定装置及使用方法，属于混凝土制备领域。该装置由圆形固定底座、导向杆、导向环、固定座手柄、定位桩、移动筒、移动筒拉杆、移动筒手柄、坍落度上限标志点、坍落度下限标志点、移动筒拉杆标志点组成。根据标准坍落度筒对该坍落度快速测定装置标定的结果，在坍落度快速测定装置导向杆上标定出混凝土料浆实际坍落度与该装置所测坍落度之间的对应关系，作为该坍落度快速测定装置的计量依据；将该坍落度快速测定装置插入待测混凝土料浆中，移动筒内装满混凝土料浆，之后提起该装置，抹平移动筒表面多余的混凝土浆，再提起移动筒，就可以测出待测混凝土料浆的坍落度。该装置体积小、测定方法简单方便、测量周期短。
The invention discloses a concrete slump rapid measuring device and a using method thereof, which belong to the field of concrete preparation. The device consists of a circular fixed base, guide rod, guide ring, fixed seat handle, positioning pile, moving cylinder, moving cylinder pull rod, moving cylinder handle, slump upper limit mark point, slump lower limit mark point, moving cylinder pull rod mark point composition. According to the results of calibration of the rapid slump measurement device by the standard slump cylinder, the corresponding relationship between the actual slump of the concrete slurry and the slump measured by the device is calibrated on the guide rod of the rapid slump measurement device , as the basis for the measurement of the rapid slump measurement device; insert the rapid slump measurement device into the concrete slurry to be tested, fill the moving cylinder with concrete slurry, then lift the device, smooth the excess surface of the moving cylinder Concrete slurry, and then lift the moving cylinder to measure the slump of the concrete slurry to be tested. The device has the advantages of small volume, simple and convenient measuring method and short measuring period.
Description
技术领域technical field
本发明属于混凝土浇筑领域，可应用于地下矿山巷道、公路铁路交通隧道、水利水电隧道的湿喷混凝土坍落度快速测定，也可用于一般混凝土搅拌站混凝土坍落度的快速测定。The invention belongs to the field of concrete pouring, and can be applied to the quick measurement of the slump of wet shotcrete in underground mine roadways, highway and railway traffic tunnels, and water conservancy and hydropower tunnels, and can also be used for the quick measurement of concrete slump in general concrete mixing stations.
背景技术Background technique
和易性是指混凝土拌合物易于施工操作，并且获得均匀密实的混凝土的性质。新拌混凝土的和易性决定了混凝土是否能正常施工，以满足硬化后的性能要求。坍落度是衡量混凝土料浆和易性的一个重要指标，该指标反映了混凝土是否易于施工操作和均匀密实的性能，具体来说就是保证施工的正常进行。以矿山巷道、公路铁路交通隧道推广应用的湿喷混凝土工艺为例，如果湿喷混凝土料浆坍落度过大，则表明混凝土料浆流动性过大、粘聚性和保水性很差，在混凝土湿喷过程中会产生过大的反弹，速凝剂耗量加大，所喷射混凝土的强度也会下降；如果湿喷混凝土料浆坍落度过小，表明混凝土料浆流动性过小、湿喷混凝土设备难以将料浆自喷枪中喷射出去，容易发生堵管等故障。因此，地下矿山巷道、公路铁路交通隧道、水利水电隧道的湿喷混凝土施工中，或者一般的混凝土搅拌站制备料浆过程中，都要测定混凝土的坍落度，以控制混凝土的质量，保证混凝土的塑化性能和可泵性能。Workability refers to the property that the concrete mixture is easy to operate and obtain uniform and dense concrete. The workability of fresh concrete determines whether the concrete can be constructed normally to meet the performance requirements after hardening. Slump is an important index to measure the workability of concrete slurry. This index reflects whether the concrete is easy to construct and operate and has uniform and dense performance. Specifically, it is to ensure the normal progress of construction. Taking the wet shotcrete technology popularized and applied in mine roadways and highway and railway traffic tunnels as an example, if the slump of the wet shotcrete slurry is too large, it indicates that the fluidity of the concrete slurry is too large, and its cohesion and water retention are poor. Excessive rebound will occur during the wet spraying of concrete, and the consumption of accelerator will increase, and the strength of the sprayed concrete will also decrease; if the slump of the wet sprayed concrete slurry is too small, it indicates that the fluidity of the concrete slurry is too small, It is difficult for wet shotcrete equipment to spray the slurry out of the spray gun, and it is prone to failures such as pipe blockage. Therefore, in the construction of wet sprayed concrete in underground mine roadways, highway and railway traffic tunnels, water conservancy and hydropower tunnels, or in the process of preparing slurry in general concrete mixing stations, the slump of concrete must be measured to control the quality of concrete and ensure the quality of concrete. Excellent plasticizing performance and pumpability.
坍落度测试的标准方法如下：用一块白铁皮做成一个锥形筒，上口直径100mm，底口直径200mm，高300mm，将筒放在铁板上，把拌和好的混凝土分三次浇灌进去，每次放入筒高三分之一(即100mm)每次放入后都用铁棒(直径15mm，长500mm)捣固25下，将混凝土与筒口相平，提起坍落筒后，立即量测筒高与坍落后混凝土试体最高点之间的高度差，即为该拌和物的坍落度。The standard method of slump test is as follows: use a white iron sheet to make a cone-shaped cylinder with a diameter of 100mm at the top, a diameter of 200mm at the bottom, and a height of 300mm. Put the cylinder on the iron plate and pour the mixed concrete into it three times. 1/3 of the height of the cylinder (ie 100mm) each time it is put in, use an iron rod (diameter 15mm, length 500mm) to tamp 25 times after each insertion, and the concrete is level with the mouth of the cylinder. After lifting the slump cylinder, immediately The height difference between the height of the measuring cylinder and the highest point of the concrete specimen after slumping is the slump of the mixture.
在混凝土制备现场，采用标准方法测定坍落度，存在如下弊病：(1)该种方法测定坍落度，需要两人协助完成；(2)该种方法测试过程复杂，测试周期长；(3)该方法测试过程中，需要诸多辅助工具。一般的混凝土搅拌站，往往只设置一个混凝土拌料工，同时混凝土搅拌站的频繁采用标准方法测定坍落度来控制混凝土料浆的和易性也是极不现实的。生产过程中，水量、水灰比、砂率、水泥品种、骨料条件、时间和温度、外加剂等各个因素都是变化的，这些因素都会影响混凝土的和易性，因此，在制备混凝土料浆的过程中，都是在定期测定混凝土坍落度的基础上，凭借操作工的经验来制备混凝土料浆，不同操作工由于不同的个体差异，制备的混凝土料浆坍落度差别是非常大的。At the concrete preparation site, adopting the standard method to measure the slump has the following disadvantages: (1) this method needs two people to assist in the determination of the slump; (2) the test process of this method is complicated and the test period is long; (3) ) During the testing process of this method, many auxiliary tools are needed. In general concrete mixing plants, there is often only one concrete mixer. At the same time, it is extremely unrealistic for concrete mixing plants to frequently use standard methods to measure slump to control the workability of concrete slurry. In the production process, various factors such as water volume, water-cement ratio, sand rate, cement type, aggregate condition, time and temperature, admixtures, etc. are all changed, and these factors will affect the workability of concrete. Therefore, in the preparation of concrete materials In the process of slurrying, the concrete slurry is prepared on the basis of the regular measurement of the concrete slump, and the experience of the operator is used to prepare the concrete slurry. Due to the individual differences of different operators, the slump of the prepared concrete slurry is very different. of.
发明内容Contents of the invention
本发明是针对混凝土料浆制备过程中，设计的一种简易测定混凝土料浆坍落度的装置，该装置可实现快速测定坍落度的目的。The invention aims at a device for simply measuring the slump of concrete slurry designed during the preparation process of concrete slurry, and the device can realize the purpose of quickly measuring the slump.
一种混凝土坍落度快速测定装置，由圆形固定底座、导向杆、导向环、固定座手柄、定位桩、移动筒、移动筒拉杆、移动筒手柄、坍落度上限标志点、坍落度下限标志点、移动筒拉杆标志点组成，其中圆形固定底座两侧各焊接一个定位桩，圆形固定底座侧边垂直座焊接一导向杆，其末端焊接一手柄，移动筒为一无底筒状构造，移动筒一侧上下两端各焊接一个导向环，以及一个移动筒拉杆，移动筒拉杆末端焊接一移动筒手柄。A rapid measuring device for concrete slump, which consists of a circular fixed base, a guide rod, a guide ring, a handle for a fixed seat, a positioning pile, a moving cylinder, a moving cylinder pull rod, a moving cylinder handle, a slump upper limit mark point, a slump The lower limit mark point and the moving cylinder pull rod mark point are composed of a positioning pile welded on both sides of the circular fixed base, a guide rod welded on the vertical seat on the side of the circular fixed base, and a handle welded at its end, and the moving cylinder is a bottomless cylinder Shaped structure, a guide ring is welded at the upper and lower ends of one side of the moving cylinder, and a moving cylinder pull rod is welded at the end of the moving cylinder pull rod. A moving cylinder handle is welded.
在坍落度快速测定装置固定座的导向杆上标定出所期望混凝土料浆坍落度的上下限标志点(即坍落度上标志点和坍落度下标志点)，同时在移动筒拉杆上做一标志点，根据移动筒拉杆标志点与固定座导向杆上所标定坍落度上、下标志点之间的对应关系，作为该坍落度快速测定装置的计量依据；Mark the upper and lower limit mark points of the expected concrete slurry slump on the guide rod of the fixed seat of the slump rapid determination device (ie, the upper mark point of the slump and the lower mark point of the slump), and at the same time, mark the points on the moving cylinder rod. Make a mark point, according to the corresponding relationship between the mark point of the pull rod of the moving cylinder and the upper and lower mark points of the slump marked on the guide rod of the fixed seat, as the measurement basis for the rapid slump measurement device;
混凝土料浆坍落度快速测定装置的使用方法如下：The method of using the rapid measuring device for concrete slurry slump is as follows:
(1)将移动筒放置于圆形固定底座上，之后一手握固定筒手柄，另一手握移动筒手柄，将移动筒插入混凝土料浆中，装满移动筒后，提起该测定装置，并用刮刀将移动筒口的混凝土料浆刮平；(1) Place the moving cylinder on the circular fixed base, then hold the handle of the fixed cylinder with one hand and the handle of the moving cylinder with the other hand, insert the moving cylinder into the concrete slurry, after filling the moving cylinder, lift the measuring device, and use a scraper Scrape the concrete slurry at the mouth of the moving barrel;
(2)一手握住圆形固定底座的手柄，另一手提起移动筒手柄，则移动筒内的混凝土坍落，将移动筒下缘与圆形固定底座上的混凝土最高点对齐；(2) Hold the handle of the circular fixed base with one hand, and lift the handle of the moving tube with the other hand, the concrete in the moving tube will collapse, and align the lower edge of the moving tube with the highest point of the concrete on the circular fixed base;
(3)观察移动筒拉杆标志点所在的位置，如果移动筒拉杆标志点在固定座导向杆上所标定坍落度下标志点的下方，则说明所制备混凝土料浆坍落度过大；如果移动筒拉杆标志点在固定座导向杆上所标定坍落度上、下标志点之间，则说明所制备混凝土料浆坍落度适当；如果移动筒拉杆标志点在固定座导向杆上所标定坍落度上标志点的上方，则说明所制备混凝土料浆坍落度过小；(3) Observe the position of the mark point of the pull rod of the moving cylinder. If the mark point of the pull rod of the moving cylinder is below the mark point of the slump marked on the guide rod of the fixed seat, it means that the slump of the prepared concrete slurry is too large; if If the mark point of the pull rod of the moving cylinder is between the upper and lower mark points of the slump marked on the guide rod of the fixed seat, it means that the slump of the prepared concrete slurry is appropriate; Above the marked point on the slump, it indicates that the slump of the prepared concrete slurry is too small;
(4)同时根据移动筒拉杆标志点与固定座导向杆上标志点所对应的位置，可以读出所制备混凝土料浆的坍落度值。(4) At the same time, the slump value of the prepared concrete slurry can be read out according to the positions corresponding to the marked points on the moving cylinder pull rod and the marked points on the guide rod of the fixed seat.
该混凝土料浆坍落度快速测定装置与标准坍落度测定试验装置的不同表现在下述几个方面：The difference between the concrete slurry slump rapid test device and the standard slump test device is in the following aspects:
(1)混凝土料浆坍落度快速测定装置只需一个人就能轻松完成，标准的坍落度测定装置必须要两人协助完成；(1) The concrete slurry slump rapid measurement device can be easily completed by only one person, and the standard slump measurement device must be completed by two people;
(2)混凝土料浆坍落度快速测定装置测量坍落度周期短，在20-30秒之内就能完成坍落度的测定，标准的坍落度测定装置自准备工作开始至测定全部结束(包括清洗工作)，一般需要5-10以上分钟；(2) The slump measurement period of the concrete slurry slump rapid measurement device is short, and the slump measurement can be completed within 20-30 seconds. The standard slump measurement device starts from the preparation work to the end of the measurement. (including cleaning work), generally takes more than 5-10 minutes;
(3)混凝土料浆坍落度快速测定装置在测定过程中仅需要一个刮刀做辅助工具，标准的坍落度测定装置在测定过程中，除坍落桶以外，还需要一块平面板、一个盛混凝土料浆的工具、一根棍子、一个刮刀，以及一把尺子等；(3) The rapid measuring device for slump of concrete slurry only needs a scraper as an auxiliary tool in the measuring process, while the standard slump measuring device needs a flat plate, a container and a bucket in addition to the slump bucket. Tools for concrete grout, a stick, a scraper, a ruler, etc.;
(4)混凝土料浆坍落度快速测定装置不能精确测定混凝土料浆的坍落度，但可测定出混凝土料浆坍落度的大致范围，该精度完全能够满足生产过程中对混凝土坍落度的一般要求，标准的混凝土坍落度测定装置能够准确测定混凝土的坍落度。(4) The rapid measuring device for slump of concrete slurry cannot accurately measure the slump of concrete slurry, but it can measure the approximate range of slump of concrete slurry. The standard concrete slump measuring device can accurately measure the slump of concrete.
本发明的优点在于：The advantages of the present invention are:
(1)只需一个人就可以完成混凝土料浆坍落度的测定；(1) Only one person can complete the determination of the slump of concrete slurry;
(2)该装置体积小，测定方法简单；(2) The device is small in size and simple in measuring method;
(3)该装置能在30秒之内快速测定混凝土料浆的坍落度，测量周期短；(3) The device can quickly measure the slump of concrete slurry within 30 seconds, and the measurement period is short;
(4)该装置可以通过对混凝土料浆坍落度的快速测定，以调节混凝土料浆各物料掺量，使所制备的混凝土料浆坍落度控制在设计的范围之内，避免了仅凭借操作工个人经验来判断混凝土料浆坍落度所造成的误差，又克服了采用标准坍落度装置在生产过程中使用所存在的缺点；(4) The device can adjust the amount of each material in the concrete slurry by quickly measuring the slump of the concrete slurry, so that the slump of the prepared concrete slurry can be controlled within the design range, avoiding the need to rely only on The error caused by the operator's personal experience to judge the slump of concrete slurry overcomes the shortcomings of using standard slump devices in the production process;
该装置适合在不需要严格控制混凝土料浆坍落度的前提下，快速测定混凝土料浆坍落度，完全可以满足地下矿山巷道、公路铁路交通隧道、水利水电隧道的湿喷混凝土料浆制备过程中对坍落度控制的精度要求，也能够满足一般条件下混凝土搅拌站的混凝土料浆坍落度控制的精度要求。The device is suitable for quickly measuring the slump of concrete slurry without strictly controlling the slump of concrete slurry. The accuracy requirements for slump control in the system can also meet the accuracy requirements for concrete slurry slump control of concrete mixing plants under general conditions.
附图说明Description of drawings
图1为坍落度快速测定装置正视图(A-A剖面)Figure 1 is the front view of the rapid slump measurement device (A-A section)
图2为坍落度快速测定装置侧视图(C-C剖面)Figure 2 is a side view of the rapid slump measurement device (C-C section)
图3为坍落度快速测定装置俯视图Figure 3 is a top view of the rapid slump measurement device
图中：1——移动筒手柄；2——固定座手柄；3——移动筒拉杆；4——坍落度上限标志点；5——坍落度下限标志点；6——移动筒拉杆标志点；7——导向杆；8——移动筒；9——定位桩；10——圆形固定底座；11——导向环。In the figure: 1—handle of moving cylinder; 2—handle of fixed seat; 3—tie rod of moving cylinder; 4—mark point of upper limit of slump; 5—mark point of lower limit of slump; 6—pull rod of moving cylinder Marking point; 7—guiding rod; 8—moving cylinder; 9—positioning pile; 10—circular fixed base; 11—guiding ring.
具体实施方式Detailed ways
混凝土料浆坍落度快速测定装置的加工要求如下：The processing requirements of the rapid measuring device for concrete slurry slump are as follows:
(1)混凝土料浆坍落度快速测定装置包括圆形固定底座、移动筒等相关构件，圆形固定底座直径与移动筒外径一致，为110mm，圆形固定底座两侧各焊接一个高40mm的定位桩，以确保移动筒准确放在圆形固定底座上，在测量过程中不侧滑、偏移，见图1、图2；(1) The rapid measurement device for concrete slurry slump includes a circular fixed base, a moving cylinder and other related components. The diameter of the circular fixed base is the same as the outer diameter of the moving cylinder, which is 110mm, and each side of the circular fixed base is welded with a height of 40mm. The positioning pile is used to ensure that the moving cylinder is accurately placed on the circular fixed base, and does not slip or shift during the measurement process, see Figure 1 and Figure 2;
(2)圆形固定底座侧边垂直座焊接一φ10mm的导向杆，导向杆长392mm，其末端焊接一L型手柄，见图1、图2、图3；(2) A φ10mm guide rod is welded to the vertical seat on the side of the circular fixed base, the length of the guide rod is 392mm, and an L-shaped handle is welded at the end, see Figure 1, Figure 2, and Figure 3;
(3)加工一内径φ100mm，外径110mm，高150mm的圆筒(称为移动筒)，移动筒一侧上下两端各焊接一个导向环，通过这两个导向环，将移动筒与圆形固定底座导向杆连接在一起，同时在移动筒侧帮焊接一φ10mm的拉杆，拉杆长385mm，拉杆末端焊接一L型手柄，见图1、图2、图3；(3) Process a cylinder with an inner diameter of φ100mm, an outer diameter of 110mm, and a height of 150mm (called a moving cylinder). A guide ring is welded on one side of the moving cylinder at the upper and lower ends. Through these two guiding rings, the moving cylinder and the circular The guide rods of the fixed base are connected together, and at the same time, a φ10mm pull rod is welded on the side of the moving cylinder, the pull rod is 385mm long, and an L-shaped handle is welded at the end of the pull rod, see Figure 1, Figure 2, and Figure 3;
(4)分别用标准的坍落度筒和该坍落度快速测定装置同时测定不同配合比混凝土料浆的坍落度值，以对坍落度快速测定装置进行标定，在移动筒的拉杆上做一标记点，同时在坍落度快速测定装置的导向杆上标定出坍落度上、下限标志点，上、下限标志点所对应的坍落度值，由配制混凝土料浆所要求的坍落度上、下限值要求相对应(如矿山使用的普通湿喷机，一般要求的坍落度为120-200mm)，并通过标准坍落度筒标定出快速测量坍落度筒中上、下限标志点的实际位置。并标注出混凝土坍落度分别为20mm、40mm、60mm，直至300mm时在导向杆上所对应的标志点。(4) Use the standard slump cylinder and the rapid slump measuring device to simultaneously measure the slump values of concrete slurry with different mix ratios, so as to calibrate the rapid slump measuring device. Make a mark point, and at the same time calibrate the upper and lower limit mark points of the slump on the guide rod of the rapid slump measurement device, and the slump value corresponding to the upper limit mark point and the lower limit mark point are determined by the slump value required for the preparation of concrete slurry. The upper and lower limits of the slump are required to correspond (for example, the common wet spraying machine used in mines generally requires a slump of 120-200mm), and the upper and lower limits of the rapid measurement slump tube are calibrated through the standard slump tube The actual position of the marker point. And mark the corresponding mark points on the guide rod when the concrete slump is 20mm, 40mm, 60mm, up to 300mm.
混凝土料浆坍落度快速测定装置的使用方法如下：The method of using the rapid measuring device for concrete slurry slump is as follows:
(1)将移动筒放置于圆形固定底座上，之后一手握固定筒手柄，另一手握移动筒手柄，将移动筒插入混凝土料浆中，装满移动筒后，提起该测定装置，并用刮刀将移动筒口的混凝土料浆刮平；(1) Place the moving cylinder on the circular fixed base, then hold the handle of the fixed cylinder with one hand and the handle of the moving cylinder with the other hand, insert the moving cylinder into the concrete slurry, after filling the moving cylinder, lift the measuring device, and use a scraper Scrape the concrete slurry at the mouth of the moving barrel;
(2)一手握住圆形固定底座的手柄，另一手提起移动筒手柄，则移动筒内的混凝土坍落，将移动筒下缘与圆形固定底座上的混凝土最高点对齐；(2) Hold the handle of the circular fixed base with one hand, and lift the handle of the moving tube with the other hand, the concrete in the moving tube will collapse, and align the lower edge of the moving tube with the highest point of the concrete on the circular fixed base;
(3)观察移动筒拉杆标志点所在的位置，如果移动筒拉杆标志点在坍落度下限标志点的下方，则说明所制备混凝土料浆坍落度过大；如果移动筒拉杆标志点在坍落度上、下限标志点之间，则说明所制备混凝土料浆坍落度适当；如果移动筒拉杆标志点在坍落度上限标志点的上方，则说明所制备混凝土料浆坍落度过小；(3) Observe the position of the mark point of the tie rod of the moving cylinder. If the mark point of the tie rod of the moving cylinder is below the mark point of the lower limit of slump, it means that the prepared concrete slurry has too much slump; If the slump is between the upper and lower limit mark points, it means that the slump of the prepared concrete slurry is appropriate; if the mark point of the moving cylinder rod is above the upper limit mark point of the slump, it means that the slump of the prepared concrete slurry is too small ;
(4)同时根据移动筒拉杆标志点与导向杆上标志点所对应的位置，可以读出所制备混凝土料浆的坍落度值。(4) At the same time, the slump value of the prepared concrete slurry can be read out according to the positions corresponding to the marked points on the moving cylinder pull rod and the marked points on the guide rod.
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