Device and method for measuring free swell ratio of slurry
A technology of expansion rate and slurry, which is applied in the field of devices for measuring the free expansion rate of slurry, can solve the problems of weak strength, unresolved circumferential restrictions, errors, etc., and achieve highly accurate representational effects
Active Publication Date: 2015-03-11
CNBM ZHONGYAN TECH
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Problems solved by technology
[0008] In some implementations, there is a method of measuring the expansion rate using the overflow method, which can alleviate the problem of the circumferential restriction to a certain extent, but the strength is very weak, which is only valuable in the small range analyzed by the inventors , did not solve the problem of circumferential limitation, but sacrificed more measurement accuracy. The reason is that the overflow will inevitably lead to the loss of part of the slurry. Even if the lost part is accurately measured, the overall expansion rate through conversion will not There will be very large errors
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[0040] Refer to the attached Figure 1-4 A schematic structural view of each main part of a device for measuring the free expansion rate of slurry that is matched with a preferred embodiment is illustrated, wherein figure 1 A schematic diagram of the structure of an outer cylinder shown in , since it is a device with a relatively large aspect ratio, a simplified drawing method is used in the figure.
[0041] figure 1 What is represented in is an outer cylinder structure, which must first be closed at the bottom when in use, which can be expressed as two options, one option is that the outer cylinder itself forms a cylinder with a closed bottom, and the other option is as follows figure 1As shown, the upper and lower ends of the outer cylinder body 1 are open, and are sealed by, for example, the bottom cover during use. The sealing needs to meet a certain sealing level, such as the sealing level matched by the measurement method in the present invention, Based on the technica...
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The invention discloses a device and a method for measuring the free swell ratio of slurry. According to the device and method for measuring the free swell ratio of the slurry, compared with a traditional measuring device (such as measuring cylinder), the device for measuring the free swell ratio of the slurry uses a flexible plastic bag to store the slurry to be measured, along with the swelling of the slurry, the plastic bag would generate deformation, and therefore, the rigid constraint caused by the measuring cylinder is avoided, the slurry suffers less circumferential constraint, the slurry swelling becomes closer to free swelling, and the free swelling of the slurry can be represented more precisely. On this condition, the device for measuring the free swell ratio of the slurry uses a double-cylinder design, wherein the outer cylinder is a rigid cylinder, and the exhaust amount generated by swelling can be obtained precisely through extracting the exhaust amount. Compared with a traditional free swell measuring scheme for the slurry, the device and method for measuring the free swell ratio of the slurry have high representation precision.
Description
technical field [0001] The invention relates to a device for measuring the free expansion rate of slurry and a method for using the device to measure the free expansion rate of slurry. Background technique [0002] The free expansion rate is one of the indicators reflecting the expansion performance of materials, and it has great reference value for judging the expansion performance of concrete paste, for example. The expansion rate of the slurry before setting is combined with the test of the bleeding rate, for example, the cement slurry is poured into the measuring cylinder, the initial volume is tested, and the bleeding slurry continues to stand for 21 hours (h means hours) and then the cement slurry is measured The height of the pulp surface after expansion. Under these conditions, the volume of the expanded cement paste divided by the initial volume of the cement paste is the expansion rate. [0003] This is the currently commonly used method for measuring the free ex...
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IPC IPC(8): G01F19/00G01N19/00
Inventor 吴明慧李晓宁李婷朱玉雪王悦邹琼慧王健赵海洋
Owner CNBM ZHONGYAN TECH