阅读说明：本技术 一种锚固修补混凝土和砂浆动态裂缝的方法和结构 (Method and structure for anchoring and repairing concrete and mortar dynamic cracks ) 是由 缪德忠 杨雨奕 于 2020-05-28 设计创作，主要内容包括：本发明公开的一种锚固修补混凝土和砂浆动态裂缝的方法和结构,其方法包括如下步骤：步骤1：裂缝的标识；步骤2：去除混凝土或砂浆表面的裂缝,切开并加宽呈V型槽；步骤3：在V型槽内对T型锚钉安装位置进行标记；步骤4：在步骤3所标记的T型锚钉安装位置进行钻孔,钻孔的深度依据T型锚钉的钉杆长度确定；步骤5：清洁所述V型槽和钻孔；步骤6：在所述钻孔内填充高粘度化学胶；步骤7：安装T型锚钉,并使得所述T型锚钉的钉杆插入到钻孔内,直到所述T型锚钉的钉头与所述V型槽的槽壁接触；步骤八：用高粘度化学胶填充T型锚钉的钉头；步骤九：用聚合物水泥砂浆填满V型槽,然后表面清洁。本发明实现混凝土和砂浆裂缝的修复目的。(The invention discloses a method and a structure for anchoring and repairing concrete and mortar dynamic cracks, wherein the method comprises the following steps: step 1: identifying a crack; step 2: removing cracks on the surface of the concrete or mortar, and cutting and widening the concrete or mortar into V-shaped grooves; and step 3: marking the installation position of the T-shaped anchor in the V-shaped groove; and 4, step 4: drilling at the T-shaped anchor installation position marked in the step 3, wherein the depth of the drilled hole is determined according to the length of the rod of the T-shaped anchor; and 5: cleaning the V-shaped groove and the drilled hole; step 6: filling high-viscosity chemical glue in the drill hole; and 7: installing a T-shaped anchor, and enabling a nail rod of the T-shaped anchor to be inserted into the drilled hole until a nail head of the T-shaped anchor is in contact with the groove wall of the V-shaped groove; step eight: filling the nail head of the T-shaped anchor with high-viscosity chemical glue; step nine: the V-shaped groove is filled with polymer cement mortar, and then the surface is cleaned. The invention realizes the aim of repairing concrete and mortar cracks.)

1. A method for anchoring and repairing concrete and mortar dynamic cracks is characterized by comprising the following steps:

step 1: identifying a crack;

step 2: removing cracks on the surface of the concrete or mortar, and cutting and widening the concrete or mortar into V-shaped grooves;

and step 3: marking the installation position of the T-shaped anchor in the V-shaped groove;

and 4, step 4: drilling at the T-shaped anchor installation position marked in the step 3, wherein the depth of the drilled hole is determined according to the length of the rod of the T-shaped anchor;

and 5: cleaning the V-shaped groove and the drilled hole;

step 6: filling high-viscosity chemical glue in the drill hole; filling the drill hole with high-viscosity chemical glue;

and 7: installing a T-shaped anchor, and enabling a nail rod of the T-shaped anchor to be inserted into the drilled hole until a nail head of the T-shaped anchor is in contact with the groove wall of the V-shaped groove;

step eight: filling the nail head of the T-shaped anchor with high-viscosity chemical glue;

step nine: the V-shaped groove is filled with polymer cement mortar, and then the surface is cleaned.

2. The method of claim 1 wherein in step 2, if the facing material is present, the facing material is removed about 10 cm wide along the fracture.

3. The method for anchor repairing of concrete and mortar dynamic cracks according to claim 1, wherein in step 2, a disc sander equipped with a dust collector is used to remove cracks on the surface of concrete or mortar, and V-shaped grooves are cut and widened.

4. A structure for anchoring and repairing concrete and mortar dynamic cracks, comprising:

removing cracks on the surface of the concrete or mortar, and cutting and widening the formed V-shaped groove;

a hole drilled at the bottom of the V-shaped groove;

filling the high-viscosity chemical glue in the holes;

the rivet rod of the T-shaped rivet is inserted into the hole, and the rivet head of the T-shaped rivet is positioned in the V-shaped groove and is in contact with the groove wall of the V-shaped groove;

the high-viscosity chemical glue is filled in the V-shaped groove and completely covers the nail head of the T-shaped anchor;

and polymer cement mortar filled in the V-shaped groove and completely covering the high-viscosity chemical glue, wherein the V-shaped groove is filled with the polymer cement mortar.

5. The structure for anchoring and repairing concrete and mortar dynamic cracks as claimed in claim 4, wherein the outer circumference of the shank of the T-shaped anchor is in a screw shape, a concave-convex shape or a bamboo joint shape. Thus, the nail rod of the T-shaped anchoring nail can be tightly combined with the hole wall of the hole through high-viscosity chemical glue.

Technical Field

The invention relates to the technical field of buildings, in particular to a method and a structure for anchoring and repairing concrete and mortar dynamic cracks.

Background

When concrete or mortar cracks, the prior art is to perform resin sealing, resin grouting, resin filling with V-shaped grooves and other treatment methods on the concrete and mortar cracks. The methods have the disadvantages that the method cannot play a substantial restraint role in controlling and expanding the cracks, only seals and heals and fills the concrete cracks, has higher requirements on cleaning the cracks and interface cleaning and strength. The problems of surface sealing cracks, grouting filling cracks and V-shaped groove embedding cracks are that dynamic cracks continue to appear. The interface is a weak node, a crack may be changed into two cracks, and the problem of the crack cannot be thoroughly solved.

Therefore, the applicant submits an invention patent application related to a concrete crack treatment technology to the intellectual property office of China on the 12 th 9 th 2018, wherein the application number is CN201810584742.1, and the technology comprises the following steps: (1) designing, selecting and arranging a high-strength restraint band; (2) duplicating the position of the high-strength restraint band on the surface of the concrete; (3) punching and cutting the high-strength restraint belt to be embedded; (4) cleaning the holes and cutting seams; (5) preparing resin and pouring the resin; (6) installing a high-strength restraint belt; (7) sealing the high-strength restraint band and the original cracks; the high-strength restraint strap comprises two anchoring pieces and a connecting part for connecting the anchoring pieces, wherein the connecting part is made of a composite material of a carbon fiber woven strap and resin. However, in the actual use process, the repairing effect on the cracks is not ideal.

Disclosure of Invention

One of the technical problems to be solved by the present invention is to provide a method for repairing concrete and mortar dynamic cracks by anchoring, aiming at the problems existing in the existing concrete and mortar dynamic crack repairing. The crack repairing method solves the problems that cracks of an outer wall, the ground, concrete and mortar are restrained under the influence of temperature difference and the change of the humidity of an external air environment, the cracks are increased and reduced in dynamic change due to repeated expansion and contraction, and the aim of repairing the cracks of the concrete and the mortar is fulfilled.

The second technical problem to be solved by the invention is to provide a structure for anchoring and repairing concrete and mortar dynamic cracks aiming at the problems existing in the existing concrete and mortar dynamic crack repair. The crack repairing method solves the problems that cracks of an outer wall, the ground, concrete and mortar are restrained under the influence of temperature difference and the change of the humidity of an external air environment, the cracks are increased and reduced in dynamic change due to repeated expansion and contraction, and the aim of repairing the cracks of the concrete and the mortar is fulfilled.

The method for anchoring and repairing concrete and mortar dynamic cracks as the first aspect of the invention comprises the following steps:

step 1: identifying a crack;

step 2: removing cracks on the surface of the concrete or mortar, and cutting and widening the concrete or mortar into V-shaped grooves;

and step 3: marking the installation position of the T-shaped anchor in the V-shaped groove;

and 4, step 4: drilling at the T-shaped anchor installation position marked in the step 3, wherein the depth of the drilled hole is determined according to the length of the rod of the T-shaped anchor;

and 5: cleaning the V-shaped groove and the drilled hole;

step 6: filling high-viscosity chemical glue in the drill hole; filling the drill hole with high-viscosity chemical glue;

and 7: installing a T-shaped anchor, and enabling a nail rod of the T-shaped anchor to be inserted into the drilled hole until a nail head of the T-shaped anchor is in contact with the groove wall of the V-shaped groove;

step eight: filling the nail head of the T-shaped anchor with high-viscosity chemical glue;

step nine: the V-shaped groove is filled with polymer cement mortar, and then the surface is cleaned.

In a preferred embodiment of the present invention, in step 2, if the facing material is present, the facing material is removed along the crack by about 10 centimeters wide.

In a preferred embodiment of the present invention, in step 2, cracks on the surface of the concrete or mortar are removed using a disc sander equipped with a dust collector, and V-shaped grooves are cut and widened;

as a second aspect of the present invention, a structure for anchoring and repairing concrete and mortar dynamic cracks includes:

removing cracks on the surface of the concrete or mortar, and cutting and widening the formed V-shaped groove;

a hole drilled at the bottom of the V-shaped groove;

filling the high-viscosity chemical glue in the holes;

the rivet rod of the T-shaped rivet is inserted into the hole, and the rivet head of the T-shaped rivet is positioned in the V-shaped groove and is in contact with the groove wall of the V-shaped groove;

the high-viscosity chemical glue is filled in the V-shaped groove and completely covers the nail head of the T-shaped anchor;

and polymer cement mortar filled in the V-shaped groove and completely covering the high-viscosity chemical glue, wherein the V-shaped groove is filled with the polymer cement mortar.

In a preferred embodiment of the invention, the outer circumference of the shank of the T-shaped anchor is in a screw shape, a concave-convex shape or a bamboo joint shape. Thus, the nail rod of the T-shaped anchoring nail can be tightly combined with the hole wall of the hole through high-viscosity chemical glue.

Due to the adoption of the technical scheme, the method for burying the T-shaped anchor in the crack is considered from the three-dimensional angle constraint, and the dynamic crack is repaired. Is a repair method by restricting the behavior of the fracture.

According to the method, the V-shaped seam is cut along the seam, the T-shaped anchor is anchored by the chemical glue, and the polymer cement mortar is filled in the V-shaped seam, so that the problem that the cracks of the outer wall, the ground, the concrete and the mortar are increased and reduced in dynamic change due to repeated expansion and contraction under the influence of temperature difference and the change of the humidity of the external air environment is solved, and the aim of repairing the cracks of the concrete and the mortar is fulfilled.

The invention adopts a method of cutting V-shaped seams, arranging T-shaped anchors for chemical anchoring, and filling the V-shaped seams with polymer cement mortar. The method comprises the steps of forming V-shaped seams on crack weakened concrete and mortar, embedding and installing T-shaped anchor bolts at regular intervals along the cracks, anchoring the T-shaped anchor bolts into the cracks through chemical glue, restraining cracking behaviors through the embedded T-shaped anchor bolts, and filling polymer cement mortar at V-shaped cutting positions of the T-shaped anchor bolts, wherein the performance of the polymer cement mortar is similar to that of a concrete structure.

The high-viscosity chemical glue is filled in the hole, so that the nail rod of the T-shaped anchor nail in the hole is in a bar planting state, and the outer periphery of the nail rod of the T-shaped anchor nail is in a screw rod shape, a concave-convex shape or a bamboo joint shape. Thus, the nail rod of the T-shaped anchoring nail can be tightly combined with the hole wall of the hole through high-viscosity chemical glue.

Drawings

FIG. 1 is a schematic structural diagram of the anchoring repair of concrete and mortar dynamic cracks.

Detailed Description

The invention is further described below in conjunction with the appended drawings and detailed description.

Referring to fig. 1, the method for anchoring and repairing concrete and mortar dynamic cracks of the invention comprises the following steps:

step 1: identification of the crack 10;

step 2: removing cracks on the surface of the concrete or mortar by using a disc type sander provided with a dust collector, and cutting and widening a V-shaped groove 20; if a facing material, such as tile, is present, the facing material is removed along the crack 10 approximately 10 centimeters wide.

And step 3: marking the installation position of the T-shaped anchor 30 in the V-shaped groove 20;

and 4, step 4: drilling a hole 40 at the installation position of the T-shaped anchor 30 marked in the step 3, wherein the depth of the hole 40 is determined according to the length of the rod of the T-shaped anchor 30;

and 5: cleaning the V-groove 20 and the drilled hole 40;

step 6: filling high-viscosity chemical glue 50 in the drill hole 40; the high-viscosity chemical glue 50 is filled in the drill hole 40, so that the nail rod 31 of the T-shaped anchor 30 in the hole is in a bar planting state;

and 7: installing the T-shaped anchor 30 and enabling the nail rod 31 of the T-shaped anchor 30 to be inserted into the drilled hole 40 until the nail head 32 of the T-shaped anchor 30 is in contact with the groove wall of the V-shaped groove 20; the outer peripheral surface of the screw rod 31 of the T-shaped anchor 30 is in a screw rod shape, a concave-convex shape or a bamboo joint shape. So that the shank 31 of the T-shaped anchor 30 can be tightly combined with the hole wall of the drilled hole 40 by the high-viscosity chemical glue 50;

step eight: filling the head 32 of the T-tag anchor 30 with a high viscosity chemical glue 60;

step nine: the V-shaped groove 20 is filled with polymer cement mortar 70, and then the surface is cleaned, and finally a structure for anchoring and repairing concrete and mortar dynamic cracks is formed.