Target, device and method for testing early shrinkage of magnesium phosphate cement using the target
A magnesium phosphate cement and early shrinkage technology, applied in the direction of material inspection products, etc., can solve the problems of difficult to detect the measurement accuracy of magnesium silicate cement, imperfect shrinkage measurement, large measurement error, etc. Accurate effect
Inactive Publication Date: 2017-08-11
LOGISTICAL ENGINEERING UNIVERSITY OF PLA +1
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem that the existing magnesium silicate cement shrinkage measurement is not perfect, it is difficult to detect the early measurement accuracy of magnesium silicate cement is not high, and the measurement error is large. A target is provided, and the target is used to test the early stage of magnesium phosphate cement. Apparatus and method for shrinking
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[0033] A target provided in this embodiment, such as figure 1 As shown, it includes a target body. The target body 1 includes a main board 11 and an L-shaped mounting base 12 connected under the main board 11 and integrally formed with it. The end of the mounting base 12 is bent upward to form a A connecting plate 121; a through hole 122 is provided in the middle of the connecting plate 121; the main board 11 of the target body is circular, and the transverse bending part of the mounting base 12 is isosceles trapezoidal.
[0034] The diameter of the main board 11 of the target body 1 is 50-60mm, and the lateral width of the mounting base 12 is 20-23mm.
[0035] In this embodiment, the target is obtained according to the following steps:
[0036] Step 1. Use an iron plate with a thickness of 1.5 mm to 3 mm for processing, and derust the surface. In this embodiment, an iron plate with a thickness of 2 mm is used for processing.
[0037] Step 2. The target is cut to make an L-s...
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Abstract
The invention discloses a target. The target comprises a mainboard and an L-shaped mounting base which is connected under the mainboard and integrally formed with the mainboard; the tail end of the mounting base is bent upwards to form a connecting plate; a device for testing the early-age shrinkage of the magnesium phosphate cement comprises a steel mold and a displacement measuring system, and also the target bodies which are arranged in the steel mold; an adsorption type target is arranged on the mainboard of each target; the displacement measuring system comprises displacement sensors and a signal processor; the displacement sensors are used for transmitting the displacement data of the targets to the signal processor for analytical processing; two displacement sensors are arranged above the steel mold and between the adsorption type targets. The invention also discloses a method for testing the early-age shrinkage of the magnesium phosphate cement. The invention also discloses a method for testing the early-age shrinkage of the magnesium phosphate cement. The method is capable of measuring the early-age shrinkage of the magnesium phosphate cement quickly and accurately; meanwhile, the adopted targets can be reused at the later stage.
Description
technical field [0001] The invention relates to the field of performance testing of cement materials, in particular to a target, a device and a method for testing the early shrinkage of magnesium phosphate cement by using the target. Background technique [0002] Magnesium phosphate cement is a new type of cementitious material that quickly sets and hardens based on acid-base reactions. It has the advantages of fast setting and hardening, high early strength, good bonding performance, and wide environmental adaptability. It is widely used in airport runways, municipal roads, bridges and docks , Military engineering and other fields are widely used, and it also has broad application prospects in medicine, oil well solidification, and waste solidification. At present, magnesium phosphate cement is widely used mainly as a repair material. In order to improve the quality of repair, the shrinkage deformation of magnesium phosphate cement is a key problem that must be solved, and...
Claims
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IPC IPC(8): G01N33/38
Inventor 汪宏涛齐召庆贾兴文张时豪丁建华侯玄
Owner LOGISTICAL ENGINEERING UNIVERSITY OF PLA