CN218179781U

CN218179781U - Concrete limited expansion rate measuring device

Info

Publication number: CN218179781U
Application number: CN202221575516.5U
Authority: CN
Inventors: 陈威; 张红星; 姚毅阳; 覃冠标; 许成
Original assignee: Maoming Weilian Building Materials Co ltd
Current assignee: Maoming Weilian Building Materials Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-12-30
Anticipated expiration: 2032-06-22

Abstract

The utility model provides a concrete limited expansion rate measuring device, including base, measuring frame and amesdial, measuring frame comprises bottom plate and preceding baffle and backplate, forms U type frame construction, and the bottom plate center is equipped with the logical groove of leaking the sediment, and measuring frame front end articulates with the base mutually, and measuring frame bottom is equipped with the bracing, and the bracing is inconsistent with the base, and the amesdial is fixed in backplate center, and backplate center is equipped with the through-hole, and the measuring head of amesdial passes the through-hole and is connected with the amesdial, the utility model discloses saved measuring time, also reduced testing personnel's intensity of labour, improved experimental efficiency; meanwhile, the accuracy of the experiment is improved.

Description

Concrete limited expansion rate measuring device

Technical Field

The application relates to the technical field of concrete test equipment, in particular to a concrete limited expansion rate measuring device.

Background

The concrete expanding agent is used for preparing the expansive concrete. The concrete comprises compensation shrinkage concrete and self-stress concrete, wherein the compensation shrinkage concrete has the effects of compensating concrete drying and compacting concrete and improving the concrete impermeability, is mainly used for two aspects of water resistance and crack resistance in civil engineering, and is prepared in occasions of properly prolonging the expansion joint or post-cast strip interval in more use. The limited expansion ratio is a strain value of the introduced reinforcing steel bar when the expansion of the concrete is limited by a constraining body such as a reinforcing steel bar, and is expressed by an elongation per unit length of the reinforcing steel bar. The limited expansion rate of the expanding agent is the key quality and technical index of the expanding agent product, and is determined according to the method specified in the current national standard of concrete expanding agent GB 23439-2017. The expansion rate limiting process can be realized, the wall of a test piece for fixing and measuring the horizontal concrete contraction instrument is seriously abraded, a measuring groove is difficult to clean, a concrete measuring piece is unstable in fixation, and data is difficult to stabilize. The measuring instrument increases the labor intensity of testers, and has low experimental efficiency; meanwhile, experimental data are difficult to stabilize.

Disclosure of Invention

The utility model aims to solve the technical problem that lies in to the above-mentioned problem that exists, a concrete restriction expansion ratio measuring device is provided.

The embodiment of the application is realized as follows:

the embodiment of the application provides a concrete restriction expansion ratio measuring device, a serial communication port, including base, measurement frame and amesdial, the measurement frame comprises bottom plate and preceding baffle and backplate, forms U type frame construction, the bottom plate center is equipped with the sediment that leaks and leads to the groove, the measurement frame front end with the base is articulated mutually, and the measurement frame bottom is equipped with the bracing, bracing and base looks butt, the amesdial is fixed in the backplate center, the backplate center is equipped with the through-hole, and the measuring head of amesdial passes the through-hole is connected with the amesdial.

In some optional embodiments, the cross section of the slag leakage through groove is in a T-shaped structure with a wide upper part and a narrow lower part.

In some optional embodiments, the two sides of the slag leakage through groove are coated with wear-resistant layers, and the wear-resistant layers are in contact with the concrete test block.

In some alternative embodiments, the wear layer is a nanocoating.

In some alternative embodiments, the measuring head is of a square block structure, and the length dimension of the measuring head is the same as the width of the slag leakage through groove.

In some optional embodiments, a screw rod is arranged in the center of the rear end face of the measuring head and is in threaded connection with the dial indicator.

The beneficial effect of this application is: according to the device for measuring the limited expansion rate of the concrete, the slag leakage through groove is arranged to facilitate the cleaning of the fragments of the concrete test block, and meanwhile, the concrete test block is fixed more stably; the nano coating prevents the fragments of the concrete sample from being bonded, prevents the concrete sample from wearing the measuring groove, and prolongs the service life of the equipment; the measuring head with the large-diameter plane is adopted, so that the contact area between the measuring head and the concrete test block is increased, and the data stability is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a side view of an embodiment of the present application.

Fig. 2 is a top view of an embodiment of the present application.

FIG. 3 is a schematic view of a measuring head according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The features and properties of the present application are described in further detail below with reference to examples.

As shown in fig. 1 and 2, a concrete restriction expansion ratio measuring device, including base 1, measurement frame and amesdial 2, the measurement frame comprises bottom plate 3 and preceding baffle 4 and backplate 5, form U type frame construction, the bottom plate center is equipped with and leaks sediment logical groove 6, the measurement frame front end is articulated mutually with the base, the measurement frame bottom is equipped with bracing 7, bracing and base looks butt, the amesdial is fixed in the backplate center, the backplate center is equipped with the through-hole, the measuring head 8 of amesdial passes the through-hole and is connected with the amesdial.

The cross section that leaks the sediment and lead to the groove is narrow T type structure about wide, and the concrete test block is prismatic structure, and the edge card advances to leak the sediment and leads to the inslot, and the cell type of T type structure can the chucking concrete test block, can spill the piece of concrete test block again, is convenient for clear up the measuring stand.

And two side surfaces of the slag leakage through groove are coated with wear-resistant layers 9, and the wear-resistant layers are in contact with the concrete test block. The wearing layer is the nanometer coating, prevents that the concrete test block piece from bonding, prevents that the wearing and tearing of concrete test block from leaking the sediment and leading to the groove.

As shown in FIG. 3, the measuring head is a square structure, and the length size is the same as the width of the slag leakage through groove. The size of the measuring head is increased, and the contact area of the measuring head and the concrete test block is increased.

The center of the rear end face of the measuring head is provided with a screw 10 which is in threaded connection with the dial indicator.

When the device is used, the concrete limited expansion rate measuring device is placed in a dry curing chamber, the slag leakage through groove is cleaned, whether the nano coating is complete or not is checked, the dial indicator is fixed on the rear baffle of the measuring frame, and the large-diameter plane measuring head is fixed at the end of the dial indicator. And calibrating by using a standard rod, cleaning a piece to be tested, fixing the piece to be tested on the slag leakage through groove, reading data, retesting and recording the data.

The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims

1. The utility model provides a concrete restriction expansion ratio measuring device, its characterized in that includes base, measurement frame and amesdial, the measurement frame comprises bottom plate and preceding baffle and backplate, forms U type frame construction, the bottom plate center is equipped with leaks the sediment and leads to the groove, the measurement frame front end with the base is articulated mutually, and the measurement frame bottom is equipped with the bracing, bracing and base looks butt, the amesdial is fixed in the backplate center, the backplate center is equipped with the through-hole, and the measuring head of amesdial passes the through-hole is connected with the amesdial.

2. The device for measuring the limited expansion rate of concrete according to claim 1, wherein the cross section of the slag leakage through groove is of a T-shaped structure with a wide top and a narrow bottom.

3. The apparatus as claimed in claim 2, wherein the two sides of the slag leakage through groove are coated with wear-resistant layers, and the wear-resistant layers are in contact with the concrete test block.

4. A concrete limited expansion ratio measuring device according to claim 3, wherein the wear resistant layer is a nano coating.

5. A concrete limited expansion rate measuring device according to claim 1 or 4, wherein the measuring head is of a square block structure, and the length dimension of the measuring head is the same as the width of the slag leakage through groove.

6. The concrete limited expansion rate measuring device of claim 5, wherein a screw rod is arranged in the center of the rear end face of the measuring head and is in threaded connection with the dial indicator.