Reinforced UHPC brick masonry and forming method thereof
Through the design of UHPC components and reinforcement, the problem of difficult balance of concrete self-weight and adhesion in the prior art is solved, and reinforced UHPC brick masonry with high compression and flexural strength is achieved, which is suitable for a variety of wall shapes.
Patent Information
- Application Number
- CN202510280165.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2025-07-08
AI Technical Summary
The existing reinforcement methods are difficult to improve the flexural strength and compressive strength while ensuring the adhesion of concrete. Especially when the surface of the brickwork is perpendicular to the ground, the self-weight and adhesion of concrete are difficult to balance.
UHPC components include silicate cement, fully encrypted fume, fly ash, heavy calcium carbonate, quartz sand, admixtures and POM fibers. Combined with reinforcement components such as positioning rods and reinforcement mesh, the compactness and connection strength of the concrete are improved through the design of staggered masonry and reinforcement layers.
It improves the compressive and flexural strength of brick masonry, reduces the loss rate of concrete, and enhances the grip of concrete to the sides of bricks, and is suitable for flat or curved reinforcement.
Smart Images
Figure CN120271291A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of brick masonry, and particularly to a reinforced UHPC brick masonry and a forming method thereof. Background Art
[0002] A brick masonry is a traditional building structure form, which is composed of bricks and mortar combined by a certain masonry method. A reinforced brick masonry refers to a masonry structure form that, on the basis of a traditional brick masonry structure, improves its overall strength, stability and seismic performance by adding reinforcement materials or adopting reinforcement techniques. Most of the existing reinforcement methods adopt laying a steel mesh on the surface of the brick masonry or pouring reinforced concrete. Since most of the surfaces of the brick masonry are perpendicular to the ground, it is required that the concrete used has a lower self-weight and higher adhesiveness. However, the existing high-adhesiveness concrete often has weak flexural strength and compressive strength and is difficult to balance the requirements of both. Summary of the Invention
[0003] The purpose of the present invention is to overcome the above deficiencies and provide a reinforced UHPC brick masonry and a forming method thereof, which have the advantages of high compressive and flexural strengths and lower concrete loss rate on the premise of ensuring its connection strength.
[0004] In a first aspect, the present invention provides a reinforced UHPC brick masonry, including bricks and UHPC, and the bricks are stacked and connected by UHPC. The UHPC components include, by components: 12 - 8 parts of portland cement, 0.6 - 0.4 parts of fully encrypted silica fume, 2.2 - 2.0 parts of fly ash, 12 - 10 parts of heavy calcium carbonate, 25 - 23 parts of quartz sand, 0.46 - 0.44 parts of admixture, 4.8 - 4.6 parts of water, and 0.6 - 0.4 parts of POM fiber.
[0005] Further, the UHPC components include, by components: 10 parts of portland cement, 0.5 parts of fully encrypted silica fume, 2.1 parts of fly ash, 11 parts of heavy calcium carbonate, 2.4 parts of quartz sand, 0.45 parts of admixture, 4.7 parts of water, and 0.5 parts of POM fiber.
[0006] Further, the particle diameter specifications of the quartz sand include 70 mesh and 140 mesh, and the proportion of the two different particle diameter specifications is 3∶1.
[0007] Further, the brick masonry further includes a reinforcement member, and the reinforcement member includes a positioning rod and a reinforcement mesh connected to one end of the positioning rod. The other end of the positioning rod is inserted into the gap between adjacent bricks, and at this time, the reinforcement mesh contacts the side surface of the brick.
[0008] Further, the reinforcement mesh is rotatably connected to the positioning rod.
[0009] Further, a UHPC is laid on the side of the stacked brickwork to form a reinforcement layer, and the reinforcement layer covers the reinforcement mesh with a thickness ratio of 3:1 between the two.
[0010] In a second aspect, the present invention provides a method for forming a reinforced UHPC brickwork. Based on the above-described reinforced UHPC brickwork, the specific steps are as follows: S1: Pretreat the bricks by soaking them in water for 1 - 2 hours, and at the same time select raw materials according to the target components and mix them to obtain UHPC; S2: Set up the reference line for bricklaying and make bricklaying marks; S3: Lay the first UHPC layer on the marks, then lay the first layer of bricks in a staggered joint along the reference line, ensuring horizontal and vertical, and then fill the gaps with UHPC to ensure its interior is full; S4: During the bricklaying process, place the positioning rods in the gaps between adjacent bricks at a density of 1 reinforcement per 4 square meters, and adjust their protruding lengths so that the reinforcement mesh contacts the sides of the bricks; S5: After the entire brickwork is completed, lay UHPC on its side as a reinforcement layer.
[0011] By adopting the above technical solutions, the beneficial effects of the present invention are as follows: The present invention increases the overall density of the mixed UHPC by setting quartz sands with different particle diameters, thereby improving the utilization rate and connection strength of the concrete; at the same time, POM fibers are used to increase the connection between the various components in the UHPC, greatly improving the flexural strength of the brickwork; reinforcement members are placed in the gaps of the brickwork to increase the grip of the concrete on the sides of the bricks. At the same time, the positioning rods and the reinforcement mesh are rotatably connected, increasing the adjustment space of the reinforcement mesh, which is suitable for reinforcement of flat or curved surfaces.
[0012] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.
[0013] Undoubtedly, such objects of the present invention and other objects will become more apparent after the detailed description of the preferred embodiments described below with multiple drawings and illustrations.
[0014] To make the above and other objects, features, and advantages of the present invention more obvious and understandable, one or several preferred embodiments are specifically described below in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.
[0016] In the accompanying drawings, like parts are designated by like reference numerals, and the drawings are schematic and not necessarily drawn to scale.
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only one or several embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on such drawings.
[0018] Figure 1 It is a side view of the brickwork in the present invention; Figure 2 It is a schematic structural diagram of the reinforcement in the present invention; Main reference numeral descriptions: 1. Brick; 2. UHPC; 3. Reinforcement; 31. Positioning rod; 32. Reinforcement mesh. Specific embodiments
[0019] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following further elaborates on the present invention in combination with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0020] In a first aspect, referring to Figure 1-2 , the present invention provides a reinforced UHPC brickwork, including bricks and UHPC, and the bricks are stacked and connected by UHPC. Among them, the full name of UHPC is ultra-high performance concrete.
[0021] The UHPC components include, by components: 12 - 8 parts of portland cement, 0.6 - 0.4 parts of fully encrypted silica fume, 2.2 - 2.0 parts of fly ash, 12 - 10 parts of heavy calcium carbonate, 25 - 23 parts of quartz sand, 0.46 - 0.44 parts of admixture, 4.8 - 4.6 parts of water, and 0.6 - 0.4 parts of POM fiber.
[0022] In this embodiment, the UHPC components specifically include, by components: 10 parts of portland cement, 0.5 parts of fully encrypted silica fume, 2.1 parts of fly ash, 11 parts of heavy calcium carbonate, 2.4 parts of quartz sand, 0.45 parts of admixture, 4.7 parts of water, and 0.5 parts of POM fiber.
[0023] The portland cement is P.II525 cement.
[0024] The fully encrypted silica fume is 92 fully encrypted silica fume with a silica dioxide content greater than 92%.
[0025] The particle diameter specifications of quartz sand include 70 mesh and 140 mesh, and the proportion of the two different particle diameter specifications is 3∶1.
[0026] POM fiber is a synthetic fiber made of polyoxymethylene.
[0027] To increase the grip of the concrete on the side of brick 1, the brickwork further includes a reinforcement member 3. The reinforcement member 3 includes a positioning rod 31 and a reinforcement mesh 32 connected to one end of the positioning rod 31. The other end of the positioning rod 31 is inserted into the gap between adjacent bricks 1. At this time, the reinforcement mesh 32 contacts the side of brick 1. To increase the applicable wall surfaces of the reinforcement member 3, the reinforcement mesh 32 and the positioning rod 31 are rotatably connected. When necessary, a triangular protrusion can be provided around the other end of the positioning rod 31. After the brickwork is built, UHPC is laid on its side to form a reinforcement layer, and the reinforcement layer covers the reinforcement mesh 32 and the thickness ratio of the two is 3∶1.
[0028] In a second aspect, the present invention provides a method for forming a reinforced UHPC brickwork. Based on the above-mentioned reinforced UHPC brickwork, the specific steps are as follows: S1: Pretreat the bricks by soaking them in water for 1 - 2 h. At the same time, select raw materials according to the target components to obtain UHPC. During the mixing process of UHPC, first select its dry materials for vibration premixing, and then add liquid materials on-site for stirring.
[0029] S2: Set up the reference line for bricklaying and make bricklaying marks.
[0030] S3: Lay the first layer of UHPC layer on the marks, and then lay the first layer of bricks in a staggered joint along the reference line, ensuring horizontal and vertical. Then fill the gaps with UHPC to ensure that its interior is full.
[0031] S4: During the bricklaying process, place a reinforcement member every 4 square meters. Place the positioning rod in the gap between adjacent bricks and adjust its protruding length so that the reinforcement mesh contacts the side of the bricks. S5: After the entire brickwork is built, lay UHPC on its side as a reinforcement layer.
[0032] Experimental test one Select 10 parts of Portland cement, 0.5 part of fully densified silica fume, 2.1 parts of fly ash, 11 parts of heavy calcium carbonate, 2.4 parts of quartz sand, 0.45 part of admixture, 4.7 parts of water, and 0.5 part of POM fiber. Make specimens and test them according to the compressive strength test method in the "Technical Requirements for Ultra-High Performance Concrete (UHPC)" T / CECS10107 - 2020. Select the ages of 7 days and 28 days respectively for compressive strength tests, and obtain Table 1 and Table 2 as follows: Table 1 UHPC Compressive Strength Test Table at 7-day Age
[0033] Table 2 UHPC Compressive Strength Test Table at 28-day Age
[0034] It can be seen from the above table that the discreteness of the UHPC compressive strength data in the present invention is low and meets the standards.
[0035] Experimental Test Two Select 10 parts of portland cement, 0.5 part of fully densified silica fume, 2.1 parts of fly ash, 11 parts of heavy calcium carbonate, 2.4 parts of quartz sand, 0.45 part of admixture, 4.7 parts of water, and 0.5 part of POM fiber. Make specimens and conduct tests according to the flexural strength test method in "Technical Requirements for Ultra-High Performance Concrete (UHPC)" T / CECS10107-2020. Select 7-day age and 28-day age respectively for flexural strength tests, and obtain Table 1 and Table 2 as follows: Table 1 UHPC Flexural Strength Test Table at 7-day Age
[0036] Table 2 UHPC Flexural Strength Test Table at 28-day Age
[0037] It can be seen from the above table that the UHPC in the present invention has a relatively high flexural strength and meets the standards.
[0038] It should be understood that the embodiments disclosed in the present invention are not limited to the specific processing steps or materials disclosed herein, but should extend to equivalent alternatives of such features understood by those of ordinary skill in the relevant art. It should also be understood that the terms used herein are only for the purpose of describing specific embodiments and do not mean to limit.
[0039] The "embodiments" mentioned in the specification mean that the specific features or characteristics described in connection with the embodiments are included in at least one embodiment of the present invention. Therefore, the phrase "embodiments" that appears throughout the specification does not necessarily refer to the same embodiment.
[0040] In addition, the described features or characteristics can be combined into one or more embodiments in any other suitable way. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the present invention. However, those skilled in the relevant art will understand that the present invention can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.
Claims
1. A reinforced UHPC brick masonry, comprising bricks and UHPC, wherein the bricks are stacked and connected by UHPC, characterized in that, The UHPC composition includes, by components: 12 - 8 parts of portland cement, 0.6 - 0.4 parts of fully densified silica fume, 2.2 - 2.0 parts of fly ash, 12 - 10 parts of heavy calcium carbonate, 25 - 23 parts of quartz sand, 0.46 - 0.44 parts of admixture, 4.8 - 4.6 parts of water, and 0.6 - 0.4 parts of POM fiber.
2. The reinforced UHPC brick masonry according to claim 1, wherein The UHPC composition includes, by components: 10 parts of portland cement, 0.5 parts of fully densified silica fume, 2.1 parts of fly ash, 11 parts of heavy calcium carbonate, 2.4 parts of quartz sand, 0.45 parts of admixture, 4.7 parts of water, and 0.5 parts of POM fiber.
3. The reinforced UHPC brick masonry according to any one of claims 2 or 1, characterized in that, The particle diameter specifications of the quartz sand include 70 mesh and 140 mesh, and the proportion of the parts of the two different particle diameter specifications is 3∶1.
4. The reinforced UHPC brick masonry according to claim 3, wherein, It further includes a reinforcement member, which includes a positioning rod and a reinforcement mesh connected to one end of the positioning rod. The other end of the positioning rod is inserted into the gap between adjacent bricks. At this time, the reinforcement mesh contacts the side surface of the bricks.
5. The reinforced UHPC brick masonry according to claim 4, wherein The reinforcement mesh is rotatably connected to the positioning rod.
6. The reinforced UHPC brick masonry according to claim 4, wherein, A UHPC is laid on the side surface of the stacked brickwork to form a reinforcement layer, and the reinforcement layer covers the reinforcement mesh and the thickness ratio of the two is 3∶1.
7. A forming method for a reinforced UHPC brick masonry, characterized in that, For the reinforced UHPC brickwork according to claim 4, the specific steps are as follows: S1: Pretreat the bricks by soaking them in water for 1 - 2 h, and at the same time select raw materials according to the target components to mix to obtain UHPC; S2: Set up the reference line for bricklaying and make bricklaying marks; S3: Lay the first UHPC layer on the marks, then lay the first layer of bricks in staggered joints along the reference line, ensure horizontal and vertical, and then fill the gaps with UHPC to ensure that the inside is full; S4: During the bricklaying process, place a reinforcement member every 4 square meters, place the positioning rod in the gap between adjacent bricks, and adjust its protruding length so that the reinforcement mesh contacts the side surface of the bricks; S5: After the entire brickwork is completed, lay UHPC on its side surface as a reinforcement layer.