技术领域technical field
本发明涉及一种水泥硬化速率测定装置，尤其涉及一种连续测定水泥凝结硬化速率的装置及测定方法。The invention relates to a cement hardening rate measuring device, in particular to a device and a measuring method for continuously measuring the cement setting and hardening rate.
背景技术Background technique
水泥是应用最为广泛的建筑材料之一，凝结硬化速率是考察水泥浆体早期水化反应程度的重要指标，目前常用凝结时间测定仪来测水泥的凝结时间。然而用此方法仅能测试水泥浆体在某一瞬间是否达到初凝、终凝，对于一些早强水泥，其凝结硬化速率很快，难以通过单一的初凝、终凝时间来评价此过程。例如在研究水泥基修补材料时，往往选用早强水泥、快硬水泥等作为原料，水泥基材料需要泵送至修补位置。此时若不可以连续测定水泥凝结硬化速率便不能知道其早期水化反应情况，也就无法控制泵送时间，水泥基材料很有可能硬化在泵送管道中或达到修补位置后长时间不成为硬化体。Cement is one of the most widely used building materials, and the rate of setting and hardening is an important indicator for examining the degree of early hydration reaction of cement paste. At present, setting time measuring instruments are commonly used to measure the setting time of cement. However, this method can only test whether the cement paste reaches the initial setting and final setting at a certain moment. For some early-strength cements, the setting and hardening rate is very fast, and it is difficult to evaluate this process through a single initial setting and final setting time. For example, when studying cement-based repair materials, early-strength cement, fast-hardening cement, etc. are often used as raw materials, and the cement-based materials need to be pumped to the repair location. At this time, if the cement setting and hardening rate cannot be continuously measured, the early hydration reaction cannot be known, and the pumping time cannot be controlled. hardened body.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种连续测定水泥凝结硬化速率的装置，该装置不仅可连续测定水泥硬化状况，而且避免了探头位置不固定导致的误差。The purpose of the present invention is to provide a device for continuously measuring the cement setting and hardening rate, which can not only continuously measure the cement hardening condition, but also avoid the error caused by the unfixed position of the probe.
本发明所采取的技术方案为：一种连续测定水泥凝结硬化速率的装置，包括The technical scheme adopted in the present invention is: a device for continuously measuring the setting and hardening rate of cement, comprising:
用于容置水泥浆体的容纳腔；An accommodating cavity for accommodating cement slurry;
用于固定超声探头的固定块；A fixing block for fixing the ultrasonic probe;
所述容纳腔包括底座和围板，所述底座上设置有槽口，所述围板插设于所述底座的槽口内，所述底座与所述围板形成上端开口的腔体结构；The accommodating cavity includes a base and an enclosure, a slot is provided on the base, the enclosure is inserted into the slot of the base, and the base and the enclosure form a cavity structure with an open upper end;
所述超声探头包括发射探头和接收探头，所述固定块设有两个，分别对应固定所述发射探头和所述接收探头，两固定块相对设置于所述围板外侧，所述固定块上设有用于所述发射探头或所述接收探头穿过的通孔，所述通孔内径与所述发射探头或所述接收探头外径相当，所述发射探头和所述接收探头穿过所述通孔后抵至所述围板并与所述围板接触。The ultrasonic probe includes a transmitting probe and a receiving probe, and there are two fixed blocks, which are respectively fixed to the transmitting probe and the receiving probe. There is a through hole for the transmitting probe or the receiving probe to pass through, the inner diameter of the through hole is equivalent to the outer diameter of the transmitting probe or the receiving probe, and the transmitting probe and the receiving probe pass through the The through hole abuts against the enclosure plate and contacts with the enclosure plate.
进一步的，所述围板包括相对设置的第一横围板和第二横围板，还包括相对设置的第一纵围板和第二纵围板，所第一横围板、第二横围板、第一纵围板和第二纵围板与所述底座形成上端开口的方体腔体结构。Further, the enclosure panel includes a first transverse enclosure panel and a second transverse enclosure panel arranged oppositely, and also includes a first longitudinal enclosure panel and a second longitudinal enclosure panel arranged oppositely. The enclosure plate, the first longitudinal enclosure panel and the second longitudinal enclosure panel and the base form a cubic cavity structure with an open upper end.
进一步的，所述固定块与所述围板固定连接，所述固定块由背对围板的一侧开设通孔通向所述围板，所述发射探头和所述接收探头均包括探头本体和固定座，所述探头本体与所述固定座固定连接，所述固定座置于探头本体远离发射端或接收端的一侧，所述探头本体插入所述通孔后，所述固定座装配安装于所述固定块上。Further, the fixing block is fixedly connected to the enclosure plate, the fixing block opens a through hole on the side facing away from the enclosure plate and leads to the enclosure plate, and both the transmitting probe and the receiving probe include a probe body. and a fixing seat, the probe body is fixedly connected with the fixing seat, the fixing seat is placed on the side of the probe body away from the transmitting end or the receiving end, after the probe body is inserted into the through hole, the fixing seat is assembled and installed on the fixed block.
进一步的，所述围板朝向通孔的一侧开设有与凹槽，所述凹槽内置有凡士林，所述超声探头穿过所述通孔后通过所述凡士林与所述凹槽接触。Further, the side of the enclosure plate facing the through hole is provided with a groove, the groove has a built-in vaseline, and the ultrasonic probe passes through the through hole and contacts the groove through the vaseline.
进一步的，所述底座包括底板和限位机构，所述限位机构包括限位板和限位块，所述限位板和限位块于所述固定块周侧限位所述固定块，所述底板上设有用于插设所述围板和所述限位板的槽口，所述限位板插设于所述槽口内，所述限位块固定于所述底板上。Further, the base includes a bottom plate and a limit mechanism, the limit mechanism includes a limit plate and a limit block, and the limit plate and the limit block limit the fixed block on the peripheral side of the fixed block, The bottom plate is provided with a slot for inserting the enclosure plate and the limiting plate, the limiting plate is inserted in the slot, and the limiting block is fixed on the bottom plate.
进一步的，所述围板与所述槽口之间设有涂覆有凡士林。Further, a vaseline coating is provided between the enclosure plate and the slot.
进一步的，所述底座、第一纵向围板、第二纵向围板的材质均为高阻尼合金阻尼材料。Further, the material of the base, the first longitudinal enclosure plate and the second longitudinal enclosure plate are all high damping alloy damping materials.
本发明还公开了一种采用上述装置测定水泥凝结硬化速率的方法，包括以下步骤The invention also discloses a method for measuring the setting and hardening rate of cement by using the above device, comprising the following steps
S01 将围板安装于底座上，围成所述容纳腔；S01 Install the enclosure on the base to enclose the accommodating cavity;
S02 将所述固定块置于所述围板两侧，并将所述发射探头和所述接收探头分别置于两侧的固定块的通孔内，是探头端部与所述围板接触；S02 placing the fixing blocks on both sides of the enclosure plate, and placing the transmitting probe and the receiving probe in the through holes of the fixing blocks on both sides respectively, so that the probe ends are in contact with the enclosure plate;
S03 在所述容纳腔内浇注混凝土浆体，开启超声波探测仪，实时记录传播时间，直至水泥成为硬化体；S03 pouring concrete slurry in the accommodating cavity, turning on the ultrasonic detector, recording the propagation time in real time, until the cement becomes a hardened body;
S04根据与所述发射探头和与所述接收探头接触的围板之间的间距以及超声波传输时间得出波速，绘制波速-时间曲线并计算水泥凝结硬化速率。S04 obtains the wave speed according to the distance between the transmitting probe and the enclosure plate in contact with the receiving probe and the ultrasonic transmission time, draws the wave speed-time curve and calculates the cement setting and hardening rate.
本发明所产生的有益效果包括：本发明中装置采用超声波透射法连续测定水泥凝结硬化速率，提高检测精度，是一种连续、高效、便捷、可重复性高的水泥凝结硬化速率检测装置。The beneficial effects of the present invention include: the device of the present invention adopts the ultrasonic transmission method to continuously measure the cement setting and hardening rate, improves the detection accuracy, and is a continuous, efficient, convenient and repeatable cement setting and hardening rate detection device.
附图说明Description of drawings
图1为本发明专利的结构示意图；Fig. 1 is the structural representation of the patent of the present invention;
图2 采用连续测定水泥凝结硬化速率的装置检测快硬型硫铝酸盐水泥硬化速率结果图；Fig. 2 The result of detecting the hardening rate of fast-hardening sulfoaluminate cement by using the device for continuously measuring the setting and hardening rate of cement;
图中，1、超声波探测仪，1-1、发射探头，1-2、接收探头；2、固定块，2-1、螺栓孔，2-2、通孔；3、围板，3-1、纵向围板，3-2、横向围板，3-2-1、凹槽，4、底座，4-1、槽口，4-2、限位块，4-3、限位槽口。In the figure, 1, ultrasonic detector, 1-1, transmitting probe, 1-2, receiving probe; 2, fixing block, 2-1, bolt hole, 2-2, through hole; 3, enclosure plate, 3-1 , Longitudinal enclosure, 3-2, Transverse enclosure, 3-2-1, groove, 4, base, 4-1, notch, 4-2, limit block, 4-3, limit notch.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明做进一步详细的解释说明，但应当理解为本发明的保护范围并不受具体实施方式的限制。The present invention will be further explained in detail below with reference to the accompanying drawings and specific embodiments, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
如图1，本发明涉及一种连续测定水泥凝结硬化速率的装置，包括用于容置水泥浆体的容纳腔和用于固定超声探头的固定块2；容纳腔包括底座4和围板3，底座4上设置有槽口4-1，围板3插设于底座4的槽口4-1内，底座4与围板3形成上端开口的腔体结构，该腔体结构保证了水泥浆体在其中成型和硬化过程中与空气接触。As shown in Fig. 1, the present invention relates to a device for continuously measuring the rate of cement setting and hardening, including a accommodating cavity for accommodating cement slurry and a fixing block 2 for fixing an ultrasonic probe; the accommodating cavity includes a base 4 and an enclosure 3, The base 4 is provided with a slot 4-1, the enclosure plate 3 is inserted into the slot 4-1 of the base 4, the base 4 and the enclosure plate 3 form a cavity structure with an open upper end, and the cavity structure ensures the cement slurry In contact with air during forming and hardening.
本发明中检测水泥硬化速率的仪器为超声检测仪，其超声探头包括发射探头1-1和接收探头1-2，固定块2设有两个，分别对应固定发射探头1-1和接收探头1-2，两固定块2相对设置于围板3外侧，本发明中围板3包括相对设置的第一横围板3和第二横围板3，还包括相对设置的第一纵围板3和第二纵围板3，第一横围板3、第二横围板3、第一纵围板3和第二纵围板3与底座4形成上端开口的方体腔体结构。两固定块2分别置于第一横围板3与第二横围板3背对腔体的一侧，为了防止超声探头与混凝土之间产生相对位置的变化，或者超声探测位置的变化，在固定块2上设置贯通的通孔2-2，通孔2-2由固定块2一侧向另一侧贯通，且通向围板3，通孔2-2内径与发射探头1-1或接收探头1-2外径相当，发射探头1-1和接收探头1-2穿过通孔2-2后抵至围板3并与围板3接触，本发明中通过发射探头1-1发射超声波，超声波穿过混凝土浆体后由接收探头1-2接收，通过检测波速得知混凝土硬化程度，该设置既固定了探头与混凝土的相对位置，防止探头微小移动，保证结果精度并且保证了探头的易拆卸性和混凝土块的易清理性。本发明中通孔2-2内径与探头直径均为30mm，保证了探头可以紧密插入探头洞室内部。探头长度和通孔2-2长度均为52mm，且两个探头均用螺栓打入螺栓孔2-1中，使得探头可以放置在固定块2中不发生位置变动。The instrument for detecting the cement hardening rate in the present invention is an ultrasonic detector. The ultrasonic probe includes a transmitting probe 1-1 and a receiving probe 1-2. There are two fixed blocks 2, corresponding to the fixed transmitting probe 1-1 and the receiving probe 1 respectively. -2, the two fixing blocks 2 are arranged opposite to the outer side of the enclosure plate 3. In the present invention, the enclosure plate 3 includes a first transverse enclosure plate 3 and a second transverse enclosure plate 3 arranged oppositely, and also includes a first longitudinal enclosure plate 3 arranged oppositely. and the second longitudinal enclosing plate 3 , the first lateral enclosing plate 3 , the second lateral enclosing plate 3 , the first longitudinal enclosing plate 3 and the second longitudinal enclosing plate 3 and the base 4 form a cuboid cavity structure with an open upper end. The two fixing blocks 2 are respectively placed on the side of the first transverse enclosure plate 3 and the second transverse enclosure plate 3 facing away from the cavity. In order to prevent the relative position change between the ultrasonic probe and the concrete, or the change in the ultrasonic detection position The fixing block 2 is provided with a through hole 2-2. The through hole 2-2 penetrates from one side of the fixing block 2 to the other side, and leads to the enclosure plate 3. The inner diameter of the through hole 2-2 is the same as that of the transmitting probe 1-1 or The outer diameter of the receiving probe 1-2 is the same. The transmitting probe 1-1 and the receiving probe 1-2 pass through the through hole 2-2 and then reach the enclosure plate 3 and contact the enclosure plate 3. In the present invention, the transmitting probe 1-1 transmits Ultrasonic, ultrasonic waves are received by the receiving probes 1-2 after passing through the concrete slurry, and the degree of concrete hardening can be known by detecting the wave speed. This setting not only fixes the relative position of the probe and the concrete, prevents the probe from moving slightly, ensures the accuracy of the results and ensures the probe The ease of dismantling and cleaning of concrete blocks. In the present invention, the inner diameter of the through hole 2-2 and the diameter of the probe are both 30mm, which ensures that the probe can be tightly inserted into the probe cavity. The length of the probe and the length of the through hole 2-2 are both 52mm, and the two probes are driven into the bolt hole 2-1 with bolts, so that the probe can be placed in the fixed block 2 without changing its position.
本发明中固定块2与围板3固定连接，可采用装配安装，也可以采用限位机构将固定块2限位，固定块2由背对围板3的一侧开设通孔2-2通向围板3，发射探头1-1和接收探头1-2均包括探头本体和固定座，探头本体与固定座固定连接，固定座置于探头本体远离发射端或接收端的一侧，探头本体插入通孔2-2后，固定座装配安装于固定块2上，该设置防止探头沿通孔2-2做一维方向的移动，改变两个探头之间的距离，影响测量精度。In the present invention, the fixing block 2 is fixedly connected with the enclosure plate 3, which can be assembled and installed, or the fixing block 2 can be limited by a limiting mechanism. To the enclosure plate 3, both the transmitting probe 1-1 and the receiving probe 1-2 include a probe body and a fixed seat, the probe body is fixedly connected with the fixed seat, and the fixed seat is placed on the side of the probe body away from the transmitting end or the receiving end, and the probe body is inserted into After the through hole 2-2, the fixing seat is assembled and installed on the fixing block 2. This setting prevents the probe from moving one-dimensionally along the through hole 2-2, changing the distance between the two probes and affecting the measurement accuracy.
现有技术中，凡士林涂覆厚度不易控制，大大影响超声检测精度，为了精准控制凡士林的涂覆厚度，在围板3（即第一横围板3和第二横围板3）朝向通孔2-2的一侧开设有与凹槽3-2-1，凹槽3-2-1直径为3mm、深10mm的圆形凹槽3-2-1，围板3厚度为3mm，凹槽3-2-1内涂满医用凡士林作为耦合剂，使得探头可以紧紧贴合在医用凡士林上并发射、接收超声波，且医用凡士林涂抹厚度均为1mm，超声波传输更为清晰准确。In the prior art, the coating thickness of vaseline is not easy to control, which greatly affects the accuracy of ultrasonic detection. One side of 2-2 is provided with a groove 3-2-1, the groove 3-2-1 is a circular groove 3-2-1 with a diameter of 3mm and a depth of 10mm, the thickness of the enclosure plate 3 is 3mm, and the groove 3-2-1 is filled with medical vaseline as a coupling agent, so that the probe can be tightly attached to the medical vaseline and transmit and receive ultrasonic waves, and the thickness of the medical vaseline is 1mm, and the ultrasonic transmission is clearer and more accurate.
本发明中底座4包括底板和限位机构，固定块2通过限位机构保证其与容纳腔体的相对位置，限位机构包括限位板和限位块4-2，限位板和限位块4-2于固定块2周侧限位固定块2，底板上设有用于插设围板3的槽口4-1和用于插设限位板的限位槽口4-3，限位板插设于限位槽口4-3内，限位块4-2固定于底板上，限位块4-2设有两个，分别设置于两固定块2远离容纳腔体的一侧，固定块2与围板3相对对固定块2形成第一方向的限位，每个固定块2对应两个限位板，两限位板相对设置对固定块2形成第二方向的限位。In the present invention, the base 4 includes a bottom plate and a limit mechanism. The fixed block 2 ensures its relative position with the accommodating cavity through the limit mechanism. The limit mechanism includes a limit plate and a limit block 4-2. The limit plate and the limit The block 4-2 limits the fixed block 2 on the peripheral side of the fixed block 2. The bottom plate is provided with a slot 4-1 for inserting the enclosure plate 3 and a limit slot 4-3 for inserting the limit plate. The position plate is inserted into the limit slot 4-3, the limit block 4-2 is fixed on the bottom plate, and there are two limit blocks 4-2, which are respectively arranged on the side of the two fixing blocks 2 away from the accommodating cavity. , the fixed block 2 and the enclosure plate 3 are opposite to the fixed block 2 to form a limit in the first direction, each fixed block 2 corresponds to two limit plates, and the two limit plates are arranged opposite to the fixed block 2 to form a limit in the second direction .
围板3与槽口4-1之间涂覆有凡士林，固定块2采用高阻尼合金等阻尼材料，防止超声波绕过水泥/混凝土传播至接收探头1-2处；纵向围板3-1由有机玻璃等特性阻抗与水泥浆液相近的材料制成，而横向围板3-2可采用其他材料；底座4材质为高阻尼合金等阻尼材料，防止超声波绕过水泥传播至接收探头1-2处。Vaseline is coated between the enclosure plate 3 and the slot 4-1, and the fixing block 2 is made of damping materials such as high-damping alloys to prevent ultrasonic waves from bypassing the cement/concrete and propagating to the receiving probes 1-2; the longitudinal enclosure plate 3-1 consists of Plexiglass and other materials whose characteristic impedance is similar to that of cement slurry are made of materials, and the lateral shrouds 3-2 can be made of other materials; the base 4 is made of damping materials such as high-damping alloys to prevent ultrasonic waves from bypassing the cement and propagating to the receiving probes 1-2. .
一种采用上述装置测定水泥凝结硬化速率的方法，包括以下步骤A method for measuring cement setting and hardening rate using the above-mentioned device, comprising the following steps
S01 将围板3安装于底座4上，围成容纳腔；S01 Install the enclosure plate 3 on the base 4 to enclose an accommodating cavity;
S02 将固定块2置于围板3两侧，并将发射探头1-1和接收探头1-2分别置于两侧的固定块2的通孔2-2内，是探头端部与围板3接触；S02 Place the fixing block 2 on both sides of the enclosure plate 3, and place the transmitting probe 1-1 and the receiving probe 1-2 in the through holes 2-2 of the fixing block 2 on both sides respectively, which are the probe ends and the enclosure plate. 3 contact;
S03 在容纳腔内浇注混凝土浆体，开启超声波探测仪1，实时记录传播时间，直至水泥成为硬化体；S03 Pour concrete slurry in the accommodating cavity, turn on the ultrasonic detector 1, and record the propagation time in real time until the cement becomes a hardened body;
S04根据与发射探头1-1和与接收探头1-2接触的围板3之间的间距以及超声波传输时间得出波速，绘制波速-时间曲线并计算水泥凝结硬化速率。S04 obtains the wave speed according to the distance between the transmitting probe 1-1 and the coaming plate 3 in contact with the receiving probe 1-2 and the ultrasonic transmission time, draws the wave speed-time curve and calculates the cement setting and hardening rate.
检测完成后卸下围板3以及水泥硬化体，清理装置。After the inspection is completed, remove the enclosure plate 3 and the cement hardened body, and clean the device.
下面结合图2所示的实测结果对本发明专利作具体阐述。The patent of the present invention will be described in detail below in conjunction with the actual measurement results shown in FIG. 2 .
测试材料为快硬型硫铝酸盐水泥，将结果曲线分为3个区域：平稳区Ⅰ、快速增长区Ⅱ和近似平稳区Ⅲ。可以明显看出，Ⅰ区波速几乎没有变化，水泥/混凝土在此阶段逐渐凝结但并未形成致密的硬化体，故而超声波在浆体-半固体中传播速度较慢；而到达和Ⅱ区的某个临界点时波速迅速急剧增长，代表水泥以非常快的硬化速度发展成为硬化体，此临界点对应横坐标值即为终凝时间（初凝时间可按传统方法测得）；Ⅲ区曲线逐渐平稳但然稍有增长，这说明水泥在快速硬化后仍然进行非常缓慢的反应，且反应速度越来越慢，即代表此阶段水泥在缓慢硬化，形成强度。The test material is fast-hardening sulfoaluminate cement, and the result curve is divided into 3 regions: stable region I, rapid growth region II and approximate stable region III. It can be clearly seen that the wave velocity in zone I has almost no change, and the cement/concrete gradually solidifies but does not form a dense hardened body at this stage, so the propagation speed of ultrasonic waves in the slurry-semi-solid is slow; At a critical point, the wave speed increases rapidly and sharply, which means that the cement develops into a hardened body at a very fast hardening speed. The abscissa value corresponding to this critical point is the final setting time (the initial setting time can be measured by traditional methods); Stable but slightly increased, which means that the cement still reacts very slowly after rapid hardening, and the reaction speed is getting slower and slower, which means that the cement is slowly hardening at this stage to form strength.
以上所述仅是本发明专利的优选实施方式，应当指出：对于本技术领域的普通技术人员来说，在不脱离本发明专利原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明专利的保护范围。The above is only the preferred embodiment of the patent of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the patent of the present invention, several improvements and modifications can also be made. These improvements and Retouching should also be regarded as the protection scope of the patent of the present invention.
上述仅为本发明的优选实施例，本发明并不仅限于实施例的内容。对于本领域中的技术人员来说，在本发明的技术方案范围内可以有各种变化和更改，所作的任何变化和更改，均在本发明保护范围之内。The above are only preferred embodiments of the present invention, and the present invention is not limited to the contents of the embodiments. For those skilled in the art, various changes and modifications can be made within the scope of the technical solution of the present invention, and any changes and modifications made are within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489818.7ACN110146594A (en) | 2019-06-06 | 2019-06-06 | A kind of device and measuring method for continuously measuring cement setting and hardening rate |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489818.7ACN110146594A (en) | 2019-06-06 | 2019-06-06 | A kind of device and measuring method for continuously measuring cement setting and hardening rate |
| Publication Number | Publication Date |
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| CN110146594Atrue CN110146594A (en) | 2019-08-20 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910489818.7APendingCN110146594A (en) | 2019-06-06 | 2019-06-06 | A kind of device and measuring method for continuously measuring cement setting and hardening rate |
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| RJ01 | Rejection of invention patent application after publication | Application publication date:20190820 | |
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