Steel formwork cleaning method and steel formwork cleaning cement mortar

A cleaning method and cement mortar technology, which is applied in the field of construction engineering, can solve the problems of difficult cleaning of pollutants on the surface of steel formwork, hidden dangers to human health and safety, and large environmental pollution, etc., to achieve increased mechanical occlusal force, increased bonding area, and clean high efficiency effect

Active Publication Date: 2021-09-21
SHANGHAI CONSTRUCTION GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a steel formwork cleaning method and a steel formwork cleaning cement mortar to solve the problem of difficulty in cleaning up pollutants on the surface of the steel formwork, low cleaning efficiency, high cost, large environmental pollution, and safety to human health. Hidden problems

Method used

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  • Steel formwork cleaning method and steel formwork cleaning cement mortar
  • Steel formwork cleaning method and steel formwork cleaning cement mortar
  • Steel formwork cleaning method and steel formwork cleaning cement mortar

Examples

Experimental program
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Effect test

Embodiment 1

[0123] Please refer to Figure 1 to Figure 3 , Embodiment 1 of the present invention provides a kind of T-beam steel template cleaning method, comprises the following steps:

[0124] Step 501, please refer to figure 2 Place the T-beam steel formwork 10 to be cleaned at an oblique angle of 10° to the horizontal plane, with the surface 11 of the T-beam steel formwork facing upward. That is, the inclination angle X between the T-beam steel formwork 10 and the horizontal plane is 10 degrees.

[0125] Step 502, wet the surface 11 of the T-beam steel formwork with tap water with a pressure of 1.2Mpa.

[0126] Step 503, prepare cement mortar, and mix the following ingredients evenly according to the mass ratio: water 390, ordinary Portland cement 375 with a strength grade of 42.5, fly ash 80, sand with a fineness modulus of 2.0 1140, clay 70, and Water agent 3.0, expansion agent 90. The consistency of the prepared cement mortar is 140mm.

[0127] Step 504, please refer to fig...

Embodiment 2

[0131] Please refer to Figure 1 to Figure 3 , Embodiment 2 of the present invention provides a method for cleaning T-beam steel formwork 10, comprising the following steps:

[0132] Step 601, please refer to figure 2 Place the T-beam steel formwork 10 to be cleaned at an oblique angle of 30° to the horizontal plane, with the surface 11 of the T-beam steel formwork facing upward. That is, the inclination angle X between the T-beam steel formwork 10 and the horizontal plane is 30 degrees.

[0133] Step 602, wet the surface 11 of the T-beam steel formwork with tap water with a pressure of 0.1Mpa.

[0134] Step 603, prepare cement mortar, and mix the following ingredients evenly according to the mass ratio: water 400, ordinary portland cement 360 with a strength grade of 52.5, fly ash 105, sand with a fineness modulus of 1.6 1010, and silty soil 70 , Water reducing agent 3.2, expansion agent 130. The consistency of the prepared cement mortar is 170mm.

[0135] Step 604, ple...

Embodiment 3

[0139] Please refer to Figure 1 to Figure 3 , Embodiment 3 of the present invention provides a method for cleaning T-beam steel formwork 10, comprising the following steps:

[0140] Step 701, please refer to figure 2 Place the T-beam steel formwork 10 to be cleaned at an oblique angle of 20° to the horizontal plane, with the surface 11 of the T-beam steel formwork facing upward. That is, the inclination angle X between the T-beam steel formwork 10 and the horizontal plane is 20 degrees.

[0141] Step 702, wet the surface 11 of the T-beam steel formwork with tap water with a pressure of 0.7Mpa.

[0142] Step 703, prepare cement mortar, and mix the following ingredients evenly according to the mass ratio: water 420, ordinary portland cement 345 with a strength grade of 42.5, fly ash 80, sand with a fineness modulus of 1.6 1110, dust 90, Water reducer 4.0, expansion agent 90. The consistency of the prepared cement mortar is 120mm.

[0143] Step 704, please refer to figur...

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Abstract

The invention discloses a steel formwork cleaning method and steel formwork cleaning cement mortar. The steel formwork cleaning method comprises the steps that a steel formwork is obliquely arranged relative to the horizontal plane, and the surface of the steel formwork faces upwards; the surface of the steel formwork is wetted by water; prepared cement mortar is paved on the surface of the steel formwork to form a cement mortar layer with a certain thickness; the cement mortar is prepared by uniformly mixing and stirring the following components in parts by mass: 390-420 parts of water; 345-375 parts of cement; 80-120 parts of fly ash; 960-1140 parts of sand; 70-100 parts of soil; 3.0-4.0 parts of a water reducing agent; and 90-130 parts of an expanding agent; after the cement mortar layer is hardened to a certain strength and cracked, peeling occurs, the cement mortar layer on the steel formwork is removed; and the surface of the steel formwork is washed with water. According to the method, pollutants on the surface of the steel formwork can be cleaned in a one-time adhesion mode, the cleaning difficulty is small, the cleaning efficiency is high, the cost is low, no pollution is caused to the environment, and no harm is caused to human health.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a steel formwork cleaning method and steel formwork cleaning cement mortar. Background technique [0002] Steel formwork is a steel formwork used for concrete paving and forming, and prefabricated components or cast-in-place structures can be constructed through steel formwork. Steel formwork is widely used in construction projects due to its multiple uses and high quality of concrete paving and forming. The disadvantage is that after the steel formwork is used, it is easy to form stains, oil stains, floating rust and other pollutants on its surface, so the steel formwork needs to be cleaned before the next use. For example: in bridge construction, prestressed T-beams are widely used due to their large spans, and their prefabrication work is often carried out in a spacious open space. The steel formwork used for turnover is prone to floating rust when placed in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B7/38C04B28/04
CPCB28B7/386C04B28/04C04B18/08C04B14/06C04B14/04C04B2103/302Y02W30/91
Inventor 田磊田洪强
Owner SHANGHAI CONSTRUCTION GROUP
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