Applicable device and method for shrinkage and creep analysis of concrete
An analysis device and concrete technology, which is applied in the direction of measuring devices, analysis materials, instruments, etc., can solve the problems of concrete shrinkage and volume reduction, and achieve the effect of convenient detection
Active Publication Date: 2019-05-21
BEIJING NO 3 CONSTR ENG
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Problems solved by technology
[0003] However, concrete also has its own disadvantages. The volume shrinkage phenomenon that occurs in the early stage of concrete setting or during hardening, that is, concrete shrinkage.
Method used
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[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0042] The invention discloses a device for controlling the brightness of a bulb, such as figure 1 As shown, the device includes at least:
[0043] 1. An analysis device suitable for shrinkage and creep of concrete, characterized in that it comprises:
[0044] first sleeve 1;
[0045] The second sleeve 2 is sleeved on the first sleeve 1; the second sleeve 2 is provided with a mounting groove 200, and one end of the mounting groove is provided with a dial indicator 210, and the dial indicator The shrinking head of the meter 210 faces the other end of the installation groove 200, and the other end of the installation groove 200 is fixed with a support plate; multiple outlets 220 are opened on the groove wall of the installation groove;
[0046] A plurality of telescopic rods, ...
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Abstract
The invention provides an analysis device being suitable for concrete shrinkage and creep, which includes a first sleeve; a second sleeve sleeves the first sleeve and is provided with a mounting groove; a dial gauge is disposed on one end of the mounting groove, wherein the shrinkage head of the dial gauge is towards to the other end of the mounting groove; a support board is fixed to the other end of the mounting groove; a plurality of outlets are formed in the wall of the mounting groove; a temperature and humidity sensor is disposed in the mounting groove; a plurality of communicating pipes are disposed in the first sleeve and are communicated with a plurality of outlets and with a humidifying apparatus or a drying apparatus. In the device, a plurality of outlets are arranged in the second sleeve, and then the second sleeve is connected to the humidifying apparatus or the drying apparatus outside the first sleeve through the communicating pipes. The device satisfies measurement demands, wherein the temperature and humidity environments of to-be-measured concrete are changed directly by means of the humidifying apparatus or the drying apparatus, so that creep detection can be carried out quickly and accurately.
Description
technical field [0001] The invention belongs to the field of concrete shrinkage and creep, and in particular relates to a concrete shrinkage and creep analysis device and a use method thereof. Background technique [0002] Concrete is currently a very important civil engineering material. It is prepared in a certain proportion from cementitious materials, granular aggregates, water, and admixtures and admixtures added when necessary. After uniform mixing, it becomes a kind of artificial stone after hardening. Concrete shrinks and creeps. Concrete is widely used in civil engineering because of its high compressive strength, good durability, and wide range of strength grades. [0003] However, concrete also has its own disadvantages. The volume shrinkage phenomenon that occurs in the initial stage of concrete setting or during hardening, that is, concrete shrinkage. Concrete shrinkage will cause damage to components such as cracking and loss of pre-tightening force. Therefor...
Claims
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IPC IPC(8): G01N33/38
CPCG01N33/383
Inventor 王惠杰孙志国冯开玉陈德双
Owner BEIJING NO 3 CONSTR ENG