Test piece mold of light-transmitting concrete and preparation method of test piece mold

Abstract

The invention discloses a light-transmitting concrete test piece mold and a preparation method thereof, and relates to the technical field of concrete preparation, the light-transmitting concrete test piece mold comprises a positioning fixing plate, a lower bottom mold and a side mold, the side mold comprises two side supporting plates which are symmetrically arranged and can be buckled and fixed, and supporting columns used for supporting the positioning fixing plate are arranged at the four corners of the top of the side mold; the positioning fixing plate is provided with a plurality of penetrating holes used for penetrating light-transmitting materials. Full-machine-made sand self-compacting mortar is used as a light-transmitting concrete base material, and an expanding agent is adopted for modification, so that the bonding strength of the base material and a light guide body is improved; the test piece mold is convenient to assemble and demold, so that the in-depth research on the light-transmitting concrete is further promoted.

Description

Technical Field

[0001] The invention relates to the technical field of concrete preparation, and in particular to a light-transmitting concrete specimen mould and a preparation method thereof. Background Art

[0002] Translucent concrete is a new type of concrete material that has a light-guiding function by implanting a light guide on the basis of cement-based materials. Currently, the base material is mostly cement mortar or cement paste, and the bonding of the two materials is not highly concerned. In addition, compressive strength is still an important indicator of the production quality of translucent concrete, but the existing technology has tools or templates for making translucent concrete products, but there is no mold for testing the compressive strength of translucent concrete. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a specimen mold of light-transmitting concrete and a preparation method thereof.

[0004] The light-transmitting concrete specimen mold and the preparation method thereof provided by the present invention adopt the following technical solutions:

[0005] A specimen mold for translucent concrete comprises a positioning and fixing plate, a lower bottom mold and a side mold, wherein the side mold comprises two symmetrically arranged side support plates that can be snapped and fixed, support columns for supporting the positioning and fixing plate are arranged at the four corners of the top of the side mold, and a plurality of insertion holes for inserting translucent materials are arranged on the positioning and fixing plate.

[0006] Furthermore, the lower bottom mold includes an upper bottom plate and a lower bottom plate stacked together, the peripheral side of the upper bottom plate is fixed to the inner wall of the side mold, and the lower bottom plate is fixed to the bottom of the side mold. The upper bottom plate is provided with a plurality of sockets corresponding to the through holes of the positioning and fixing plate, and the bottom ends of the support columns are inserted into the sockets.

[0007] Furthermore, an installation step for installing the upper base plate is provided on the inner side wall of the side mold close to the bottom.

[0008] Furthermore, the side support plates are two mutually symmetrical right-angle plates, and positioning holes for bolts to pass through and fix are arranged on the surfaces where the two side support plates are connected to each other.

[0009] Furthermore, a baffle is vertically arranged on the upper edge of the connection surface of one of the side support plates, and the baffle is arranged close to the inner wall of the side support plate. A slot for inserting the baffle is vertically arranged on the upper edge of the connection surface of the other side support plate.

[0010] A method for preparing light-transmitting concrete comprises the following steps:

[0011] S1. Preparation of translucent concrete: water-binder ratio 0.35-0.45, sand volume fraction 0.40-0.43, fly ash content 15-30%, polycarboxylic acid high-efficiency water reducer content 0.8-1.2%, calcium oxide-calcium sulphoaluminate composite expansion agent content 0.5%;

[0012] S2. Using the pre-planting method, light-transmitting materials made of acrylic rods are inserted into the modified light-transmitting concrete specimen mold in a certain arrangement;

[0013] S3, preparing self-compacting mortar;

[0014] S4, injecting self-compacting mortar into the mold, and after the light-transmitting concrete is completely hardened, demoulding and curing for a certain period of time, cutting and grinding the acrylic rod of the light-guiding material protruding from the surface of the light-transmitting concrete specimen to obtain a light-transmitting concrete specimen;

[0015] S5. Compressive strength performance test: The compressive strength of translucent concrete reaches up to 80.0MPa;

[0016] S6. Light transmission performance test: Place the test piece in a dark box with a through hole on one side, place the illuminance meter sensor 10 cm above the test piece, and place a dark box with a flat light source on one side of the dark box of the test piece, and make the flat light source shine on the test piece facing the through hole.

[0017] In summary, the present invention includes at least one of the following beneficial effects: using all-machine-made sand self-compacting mortar as the base material of light-transmitting concrete, and using an expansion agent for modification to improve the bonding strength between the base material and the light guide; using the specimen mold to facilitate assembly and demolding, thereby further promoting in-depth research on light-transmitting concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 It is an exploded schematic diagram of a mold according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic structural diagram of a side mold according to an embodiment of the present invention;

[0021] Figure 4 It is a schematic structural diagram of a positioning and fixing plate according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Positioning and fixing plate; 11. Insertion hole; 2. Lower bottom mold; 21. Upper bottom plate; 211. Insertion hole; 22. Lower bottom plate; 3. Side mold; 31. Side support plate; 311. Positioning hole; 312. Baffle; 313. Slot; 314. Installation step; 32. Support column. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0025] The following is combined with Figure 1-4 The present invention is described in further detail.

[0026] The embodiment of the present invention discloses a specimen mold of light-transmitting concrete. Figure 1-4 The test piece mold of the light-transmitting concrete includes a positioning and fixing plate 1, a lower bottom mold 2 and a side mold 3. The side mold 3 includes two symmetrically arranged side support plates 31 that can be fastened and fixed. The four corners of the top of the side mold 3 are provided with support columns 32 for supporting the positioning and fixing plate 1. The positioning and fixing plate 1 is provided with a plurality of insertion holes 11 for inserting light-transmitting materials. The insertion holes 11 are evenly arranged on the positioning and fixing plate 1. The light-transmitting material is an acrylic rod. When in use, the lower bottom mold 2 is installed on the side mold 3, and Fix the two side support plates 31 of the side form 3 together, install the support column 32 on the side form 3, the support column 32 is a nylon hexagonal stud, install the positioning and fixing plate 1 on the support column 32, insert the acrylic rod into the mold through the through hole 11 on the positioning and fixing plate 1, inject the self-compacting mortar into the mold, and after the translucent concrete is completely hardened, demolded and cured for a certain age, cut the acrylic rod of the light-guiding material protruding from the surface of the translucent concrete specimen and grind it to obtain a translucent concrete specimen.

[0027] In this embodiment, the lower bottom mold 2 includes an upper bottom plate 21 and a lower bottom plate 22 stacked together, both of which are made of high-density EVA foam material. The peripheral side of the upper bottom plate 21 is fixed to the inner wall of the side mold 3, and the lower bottom plate 22 is fixed to the bottom of the side mold 3. The upper bottom plate 21 is provided with a plurality of sockets 211 corresponding to the through holes of the positioning and fixing plate 1, and the bottom end of the support column 32 is inserted into the socket 211.

[0028] In this embodiment, a mounting step 314 for mounting the upper base plate 21 is provided on the inner wall of the side mold 3 close to the bottom. The upper base plate 21 is placed on the mounting step 314 , and the lower base plate 22 is located at the lower side of the mounting step 314 and is squeezed and fixed to the bottom of the side mold 3 .

[0029] In this embodiment, the side support plates 31 are two symmetrical right-angle plates, and positioning holes 311 for bolts to pass through and fix are provided on the surfaces where the two side support plates 31 are connected to each other.

[0030] In this embodiment, a baffle 312 is vertically arranged on the upper edge of the connection surface of one of the side support plates 31, and the baffle 312 is arranged close to the inner wall of the side support plate 31. A slot 313 for inserting the baffle 312 is vertically arranged on the upper edge of the connection surface of the other side support plate 31. After the two side support plates 31 are fixed, the baffle 312 is inserted into the slot 313. The baffle 312 can prevent leakage at the connection of the side support plates 31, thereby preventing mortar from leaking from the connection.

[0031] A method for preparing light-transmitting concrete comprises the following steps:

[0032] Step 1: Preparation of translucent concrete: water-cement ratio 0.35-0.45, sand volume fraction 0.40-0.43, fly ash content 15-30%, polycarboxylic acid high-efficiency water-reducing agent content 0.8-1.2%, calcium oxide-calcium sulfoaluminate composite expansion agent content 0.5%;

[0033] Step 2: Using the pre-planting method, insert the light-transmitting material made of acrylic rods into the modified light-transmitting concrete specimen mold in a certain arrangement;

[0034] Step 3: preparing self-compacting mortar;

[0035] Step 4: inject the self-compacting mortar into the mold, and after the light-transmitting concrete is completely hardened, demould and cured for a certain period of time, cut and polish the acrylic rod of the light-guiding material protruding from the surface of the light-transmitting concrete specimen to obtain a light-transmitting concrete specimen;

[0036] Step 5: Compressive strength performance test: The compressive strength of translucent concrete reaches up to 80.0MPa;

[0037] Step 6. Light transmission performance test: Place the test piece in a dark box with a through hole on one side, place the illuminance meter sensor 10 cm above the test piece, and place a dark box with a flat light source on one side of the dark box of the test piece, and make the flat light source shine on the test piece facing the through hole.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A specimen mold for light-transmitting concrete, characterized in that: The invention comprises a positioning and fixing plate (1), a lower bottom mold (2) and a side mold (3), wherein the side mold (3) comprises two symmetrically arranged side support plates (31) which can be fastened and fixed, and support columns (32) for supporting the positioning and fixing plate (1) are arranged at the four corners of the top of the side mold (3), and a plurality of insertion holes (11) for inserting light-transmitting materials are arranged on the positioning and fixing plate (1).

2. The light-transmitting concrete specimen mold according to claim 1, characterized in that: The lower bottom mold (2) comprises an upper bottom plate (21) and a lower bottom plate (22) which are stacked together; the circumferential side of the upper bottom plate (21) is fixed to the inner wall of the side mold (3); the lower bottom plate (22) is fixed to the bottom of the side mold (3); the upper bottom plate (21) is provided with a plurality of insertion holes (211) corresponding to the insertion holes of the positioning and fixing plate (1); the bottom ends of the support columns (32) are inserted into the insertion holes (211).

3. The light-transmitting concrete specimen mold according to claim 2, characterized in that: An installation step (314) for installing the upper bottom plate (21) is provided on the inner side wall of the side mold (3) close to the bottom.

4. The light-transmitting concrete specimen mold according to claim 1, characterized in that: The side support plates (31) are two mutually symmetrical right-angle plates, and positioning holes (311) for bolts to pass through and fix are provided on the surfaces where the two side support plates (31) are connected to each other.

5. The light-transmitting concrete specimen mold according to claim 4, characterized in that: A baffle (312) is vertically arranged on the connection surface of one of the side support plates (31), and the baffle (312) is arranged close to the inner wall of the side support plate (31), and a slot (313) for inserting the baffle (312) is vertically arranged on the connection surface of the other side support plate (31).

6. A method for preparing light-transmitting concrete, characterized in that: The test piece mold of the light-transmitting concrete according to any one of claims 1 to 5 comprises the following steps: S1. Preparation of translucent concrete: water-binder ratio 0.35-0.45, sand volume fraction 0.40-0.43, fly ash content 15-30%, polycarboxylic acid high-efficiency water reducer content 0.8-1.2%, calcium oxide-calcium sulphoaluminate composite expansion agent content 0.5%; S2. Using the pre-planting method, light-transmitting materials made of acrylic rods are inserted into the modified light-transmitting concrete specimen mold in a certain arrangement; S3, preparing self-compacting mortar; S4, injecting self-compacting mortar into the mold, and after the light-transmitting concrete is completely hardened, demoulding and curing for a certain period of time, cutting and grinding the acrylic rod of the light-guiding material protruding from the surface of the light-transmitting concrete specimen to obtain a light-transmitting concrete specimen; S5. Compressive strength performance test: The compressive strength of translucent concrete reaches up to 80.0MPa; S6. Light transmission performance test: Place the test piece in a dark box with a through hole on one side, place the illuminance meter sensor 10 cm above the test piece, and place a dark box with a flat light source on one side of the dark box of the test piece, and make the flat light source shine on the test piece facing the through hole.

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