A rapid self-healing treatment method for cracks in cast-in-place concrete slabs
A technology of concrete cast-in-place slabs and processing methods, which is applied in the processing of building materials, building components, building insulation materials, etc., can solve the problems of long secondary hydration time, time-consuming and laborious, and cannot be promoted, and achieve the effect of promoting self-healing , high bioavailability and wide application range
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Embodiment 1
[0032] The thickness of the cast-in-place concrete slab is 100mm, the length of the crack is 3.1m, the number of cracks is 1, the slope of the cast-in-place concrete slab is 2cm, and the water leakage at the bottom of the cast-in-place concrete slab is serious.
[0033] Under the above circumstances, the steps of the rapid self-healing treatment method for cracks in cast-in-place concrete slabs are as follows:
[0034] Step 1: Build the "cofferdam"; before stacking the "cofferdam", according to the specific situation of crack distribution on the concrete cast-in-place slab, use chalk to draw stacking lines on the surface of the concrete cast-in-place slab, and use a strength grade not lower than M2.5 cement mortar or mixed mortar, build a "cofferdam" along a small area around the crack, because the slab has a slope of 2cm, the shape of the "cofferdam" is two stepped rectangles, and the four corners of the rectangle are rounded and inverted The length of the entire "cofferdam" ...
Embodiment 2
[0043] The thickness of the cast-in-place concrete slab is 120mm, and there are 3 cracks in concentration, and the length of each crack does not exceed 1.5m. The water leakage at the bottom of the cast-in-place concrete slab is serious.
[0044] Under the above circumstances, the steps of the rapid self-healing treatment method for cracks in cast-in-place concrete slabs are as follows:
[0045] Step 1: Build the "cofferdam"; before stacking the "cofferdam", according to the specific situation of crack distribution on the concrete cast-in-place slab, use chalk to draw stacking lines on the surface of the concrete cast-in-place slab, and use a strength grade not lower than M2.5 cement mortar or mixed mortar, build a "cofferdam" in a small area around the crack. The shape of the "cofferdam" is circular. is 32mm, and the total number of "cofferdams" is 1.
[0046] Step 2: Clean the inside of the "cofferdam" for the first time; after 20 hours, the "cofferdam" will dry, and clean t...
Embodiment 3
[0054] The thickness of the cast-in-place concrete slab is 100mm, the cracks are short and concentrated, and there are 5 cracks, and the length of each crack does not exceed 1m, and the bottom of the cast-in-place concrete slab has less water leakage.
[0055] Under the above circumstances, the steps of the rapid self-healing treatment method for cracks in cast-in-place concrete slabs are as follows:
[0056] Step 1: Build the "cofferdam"; before stacking the "cofferdam", according to the specific situation of crack distribution on the concrete cast-in-place slab, use chalk to draw stacking lines on the surface of the concrete cast-in-place slab, and use a strength grade not lower than M2.5 cement mortar or mixed mortar, build a "cofferdam" in a small area around the crack. The shape of the "cofferdam" is hexagonal. The height is 27mm, and the total number of "cofferdams" is 1.
[0057] Step 2: Clean the inside of the "cofferdam" for the first time; after 12 hours, the "coffe...
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Abstract
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