CN103452332A

CN103452332A - Method for repairing construction engineering floor slab crack

Info

Publication number: CN103452332A
Application number: CN2013104105934A
Authority: CN
Inventors: 郭海; 王力尚; 余涛; 程亚楠; 朱建潮; 田三川; 彭飞; 吴鸣; 李健; 王建英; 李树江; 李方升; 李焱; 高洁
Original assignee: China State Construction Engineering Corp Middle East LLC
Current assignee: China State Construction Engineering Corp Middle East LLC
Priority date: 2013-09-11
Filing date: 2013-09-11
Publication date: 2013-12-18

Abstract

The invention discloses a method for repairing a construction engineering floor slab crack. The method comprises the following implementation steps that a through floor slab crack is chiseled into a V-shaped groove, a row of steel bar planting holes is drilled at the two sides of the V-shaped groove respectively, the polyurethane caulked joint adhesive is adopted to fill the crack at the lower part of the V-shaped groove, embedded steel bars glue is filled and Phi12 staple-shaped reinforcing steel bars are implanted, high-strength repair mortar is used for filling the V-shaped groove till the surface of a floor slab, and a grouting port is embedded, and mortar is injected at high pressure from the surface of the floor slab to block the crack of the V-shaped groove as well as other tiny cracks. By adopting the method, the crack inside the structure is prevented from further extending after repair, and an obvious crack mark does not exist on the surface of the structure. The crack and the floor slab at the two sides are combined into a whole by repairing the surface with the high-strength repair mortar, reinforcement is realized on the crack. Construction quality acceptance is passed, and normal use of the floor slab is not influenced.

Description

A kind of construction work cracks on floor slab method for repairing and mending

Technical field

The invention belongs to construction engineering technical field, be particularly related to a kind of construction work cracks on floor slab method for repairing and mending, specifically, the crack produced due to a variety of causes in Building Construction externally under loading environment (construction heaped load or prestressed stretch-draw) draw logical broadening, exceed the crack repairing that designs allowed band.

Background technology

Under the scorching environment of high temperature or other severe environment for use, in concreting process, because the raw material of agitator feed or match ratio, site operation tissue or all kinds of factors such as improper operation, concrete shrinkage and creep cause that concrete produces crack.Under the impact of the local loading such as construction heaped load or prestressed stretch-draw, irregular local cracks may will progressively be drawn logical broadening, and exceeds the scope that the design crack allows, so that can't pass through delivery receiving acceptance, even affects structure and uses.

Summary of the invention

The present invention is to provide a kind of construction work cracks on floor slab method for repairing and mending, it is characterized in that, adopts the Bar Anchorage method to be repaired producing cracks on floor slab in Building Construction; The implementation step of this method for repairing and mending is as follows:

1) pick the forming V-shape groove along the structural cracks cutter;

2) respectively bore row's bar planting hole along the V-shaped groove both sides, and use polyurethane caulking glue to fill the crack, bottom;

3) fill anchoring adhesive and implant φ 12 " staple " shape reinforcing bar;

4) use conventional high-strength mending mortar to fill up V-shaped groove to slab surfaces, and while preparing structure surface detail gap, and imbed grouting nozzle.

5) high-pressure slip-casting, separately used slurry filling machine to carry out pressure and annotate high-strength mending mortar and repaired, and packed configuration interior detail gap, carry out repairing treatment to the grouting nozzle place after slip casting completes.

Described bar planting pitch-row is from each 50mm of V-shaped groove both sides, and pitch of holes is 100mm.

The invention has the beneficial effects as follows this method for repairing and mending of application guarantee to repair rear inside configuration crack no longer further expands and body structure surface without obvious crack vestige.Through high-strength mending mortar floor top layer, fill up, making Chu Yu both sides, crack floor melt is a place, as the reinforcement at place, crack; Check and accept by construction quality, do not affect floor slab structure and normally use.

The accompanying drawing explanation

Fig. 1 is the implementation step schematic diagram of Bar Anchorage method in cracks on floor slab is repaired.

1. structure floors in figure, 2. through crack and cutter pick the forming V-shape groove, 3. the filled polyurethane filleting, 4. bore double bar planting hole, 5. implant staple shape reinforcing bar, 6. high-strength mending mortar is filled up through crack, 7. high-pressure slip-casting packed configuration interior detail gap, 8. body structure surface fine cracks.

The specific embodiment

The present invention is to provide a kind of construction work cracks on floor slab method for repairing and mending, adopts the Bar Anchorage method to be repaired producing cracks on floor slab in Building Construction; Below in conjunction with accompanying drawing, be explained.

Figure 1 shows that implementation step a, b, c, the d schematic diagram of Bar Anchorage method in cracks on floor slab is repaired.The implementation step of reinforcement bolt anchoring method is as follows:

1) the through crack cutter along structure floor 1 picks forming V-shape groove 2(as shown in Figure 1a);

2) along the V-shaped groove both sides, a row bar planting hole 4 is bored at each 50mm place, and pitch of holes is 100mm; And use polyurethane caulking glue 3 to fill crack, bottom (as shown in Figure 1 b);

3) fill anchoring adhesive and implant φ 12 " staple " shape reinforcing bar (as shown in Fig. 1 c);

4) use conventional high-strength mending mortar 6 to fill up the through crack cutter and pick forming V-shape groove 2 to slab surfaces, and while preparing structure surface detail gap, and imbed grouting nozzle (as shown in Fig. 1 c);

5) high-pressure slip-casting, need separately to use slurry filling machine to carry out pressure to inject high-strength mending mortar and repaired, and packed configuration interior detail gap, carry out repairing treatment (as shown in Fig. 1 d) to the grouting nozzle place after slip casting completes.

In slab surfaces, use high-strength mending mortar filling run through large fracture 2 and repair surface detail gap 8, re-use high-pressure slip-casting blockage structure interior detail gap, make its slab surfaces without obvious crack vestige (as shown in Fig. 1 d), reach the construction quality acceptance criteria.

Claims

1. a construction work cracks on floor slab method for repairing and mending, is characterized in that, adopts the Bar Anchorage method to be repaired producing cracks on floor slab in Building Construction; The implementation step of reinforcement bolt anchoring method is as follows:

1) pick the forming V-shape groove along the structural cracks cutter;

3) fill anchoring adhesive and implant φ 12 " staple " shape reinforcing bar;

4) use conventional high-strength mending mortar to fill up V-shaped groove to slab surfaces, and while preparing structure surface detail gap, and imbed grouting nozzle;

5) high-pressure slip-casting packed configuration interior detail gap, carry out repairing treatment to the grouting nozzle place after slip casting completes.

2. a kind of construction work cracks on floor slab method for repairing and mending according to claim 1, is characterized in that, described bar planting pitch-row is from each 50mm of V-shaped groove both sides, and pitch of holes is 100mm.

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