A destructive test method for a hollow floor gypsum filling box

Abstract

The invention discloses a destructive test method for a gypsum filling box of a hollow floor, which comprises the following steps: Step 1, test preparation; Step 2, preparation of the gypsum filling box; Step 3, damage detection, and the concrete layer whose strength reaches more than 50% Cut the formed hollow floor, cut out two gypsum mold boxes as test objects, observe the cut surface and weigh the weight of the gypsum mold boxes; step 4, compare and observe the test phenomena and record; step 5, test analysis; step 6 , to draw the experimental conclusion. This method can well control the horizontal displacement and floating phenomenon of the gypsum filling box when pouring concrete, and ensure that the cross-sectional size of each component and the thickness of the steel protection layer of the upper and lower plates meet the specifications, design requirements and the compactness of the concrete under the gypsum filling box. It is convenient to control the damage of the gypsum filling box during the vibrating process of concrete pouring, resulting in the increase of concrete volume, and has the advantage of simple and fast construction technology.

Description

technical field

[0001] The invention relates to a construction test, in particular to a destructive test method for a hollow floor gypsum filling box. Background technique

[0002] The hollow floor is a kind of cast-in-place reinforced concrete hollow floor; it is also called the cast-in-place beamless hollow floor, which is a hollow beamless floor that is cast-in-place after the mandrel product is installed. The hollow floor includes steel bars, concrete, and a mandrel. The mandrel is embedded in the reinforced concrete. It is characterized in that the mandrel is filled with light materials.

[0003] The hollow floor has many advantages, saving building materials, especially suitable for large-span and large-space buildings, the two-way grid cast-in-place rib force transmission system, reducing the weight of the floor, the flexibility and humanization of the space, and the real flat plate, There is no need for suspended ceilings, good building energy-saving effect, conveni...

Examples

Embodiment 1

[0045] A destructive test method for a hollow floor gypsum filled box, comprising the following steps:

[0046] Step 1, test preparation, has the following process:

[0047] S1, site selection, choose an open space with a length of 7.38m and a width of 5.4m, and level the open space with cushion;

[0048] S2, design, one-to-one reinforcement according to the layout of the construction design drawing, and calculate the amount of concrete according to the large-scale drawing;

[0049] S3, material preparation, material preparation is divided into the following four parts:

[0050] The first part, the formwork configuration, lays the waste and flat formwork on the cushion;

[0051] The second part is the configuration of steel bars. It is equipped with slab bars with a diameter of 8mm and a spacing of 200mm and rib beam ties with a diameter of 6.5mm and a spacing of 250mm. Among them, the slab bars and rib beam ties are all grade 3 steel materials;

[0052] The third part is t...

Embodiment 2

[0071] In order to make the disclosure of the technical solution of the present application more sufficient and the description of the technical means richer and more detailed, some technical solutions are further defined and supplemented on the basis of the above-mentioned embodiment 1. Specifically, some technical features of the supplementary description are as follows: , in the step four, the test phenomenon is the following three parts:

[0072] Part 1, compare the weight of two gypsum mold boxes as the test object after they are fully wetted before concrete pouring and the weight of the gypsum mold boxes filled in the hollow slab formed by the concrete layer whose strength reaches more than 50%;

[0073] Part 2, observe the smoothness of the inner surface of the hollow slab after cutting and taking out the gypsum mold box, and whether there is segregation due to dehydration and the phenomenon of honeycomb pitting;

[0074] Part 3, observe whether the combination of the g...

technical field

[0001] The invention relates to a construction test, in particular to a destructive test method for a hollow floor gypsum filling box. Background technique

[0002] The hollow floor is a kind of cast-in-place reinforced concrete hollow floor; it is also called the cast-in-place beamless hollow floor, which is a hollow beamless floor that is cast-in-place after the mandrel product is installed. The hollow floor includes steel bars, concrete, and a mandrel. The mandrel is embedded in the reinforced concrete. It is characterized in that the mandrel is filled with light materials.

[0003] The hollow floor has many advantages, saving building materials, especially suitable for large-span and large-space buildings, the two-way grid cast-in-place rib force transmission system, reducing the weight of the floor, the flexibility and humanization of the space, and the real flat plate, There is no need for suspended ceilings, good building energy-saving effect, conveni...

Examples

Embodiment 1

[0045] A destructive test method for a hollow floor gypsum filled box, comprising the following steps:

[0046] Step 1, test preparation, has the following process:

[0047] S1, site selection, choose an open space with a length of 7.38m and a width of 5.4m, and level the open space with cushion;

[0048] S2, design, one-to-one reinforcement according to the layout of the construction design drawing, and calculate the amount of concrete according to the large-scale drawing;

[0049] S3, material preparation, material preparation is divided into the following four parts:

[0050] The first part, the formwork configuration, lays the waste and flat formwork on the cushion;

[0051] The second part is the configuration of steel bars. It is equipped with slab bars with a diameter of 8mm and a spacing of 200mm and rib beam ties with a diameter of 6.5mm and a spacing of 250mm. Among them, the slab bars and rib beam ties are all grade 3 steel materials;

[0052] The third part is t...

Embodiment 2

[0071] In order to make the disclosure of the technical solution of the present application more sufficient and the description of the technical means richer and more detailed, some technical solutions are further defined and supplemented on the basis of the above-mentioned embodiment 1. Specifically, some technical features of the supplementary description are as follows: , in the step four, the test phenomenon is the following three parts:

[0072] Part 1, compare the weight of two gypsum mold boxes as the test object after they are fully wetted before concrete pouring and the weight of the gypsum mold boxes filled in the hollow slab formed by the concrete layer whose strength reaches more than 50%;

[0073] Part 2, observe the smoothness of the inner surface of the hollow slab after cutting and taking out the gypsum mold box, and whether there is segregation due to dehydration and the phenomenon of honeycomb pitting;

[0074] Part 3, observe whether the combination of the g...