KR910006139B1 - Method for executing water proofing work - Google Patents

Abstract

A method for transmitting a control signal from a programmable remote controller having a subscription key comprises the steps of periodically checking an internal interrupt generation of the remote controller on initial izing of the system; releasing a standby mode and counting real clocks as a low speed clock; checking a state of subscription flag to determine whether the transmission of remote control signal is subscribed or not; and outputting a subscribed remoconcode when the subscription time equals to a present time.

Description

Liquid Penetration Waterproof Construction Method

The figure is a cross-sectional schematic of the concrete surface part constructed by the construction method of this invention.

* Explanation of symbols for main parts of the drawings

1-3: epoxy resin coating layer 4: acrylic resin coating layer

5: rubber cement compound reinforcing layer 6: waterproof cement mortar layer

7: acrylic resin coating layer 8: rubber cement compound coating layer

9: surface pretreatment layer

The present invention relates to a waterproof construction method that can exhibit excellent water resistance, corrosion resistance, impact resistance, chemical resistance. More specifically, the present invention relates to a waterproof construction method in which a mixture of natural rubber, acrylic resin, epoxy resin, and cement mortar is laminated on a concrete curing surface layer to exhibit the above characteristics.

In general, the waterproofing of underground walls of buildings is waterproofed with cement mortar, and then used by lamination of asalt oil or lamination of vinyl resins. It can not withstand the corrosion caused by chemical components, and many defects that require reconstruction have been exposed because of the occurrence of cracks due to impact. In particular, the waterproofing of the inner wall of the sewage purification tank or factory waste treatment tank has almost a disadvantage that can not be used.

In the present invention, after the pretreatment of the concrete surface with a natural rubber elastomer and cement mortar compound, the surface layer coating of the resin layer containing the acrylic resin and the curing agent, the waterproof cement layer, the cement mortar compound laminate of natural rubber elastomer, acrylic water It is an object of the present invention to improve the above problems by providing a continuous layered waterproof coating layer of a layered coating and epoxy resin coating.

Natural rubber used in the blend of cement mortar and natural rubber elastomer in the present invention is a natural rubber that can be cured at room temperature, 1 part of rosin, 30 parts of hexane, 30 parts of toluene, 7 parts of natural rubber having isoprene structure, A mixture of 30 parts of petroleum benzine is blended at a rate of 700-3000g to 1kg of cement so that sanding work can be smoothly performed on cement. The surface portion reinforcement treatment is carried out to the extent that the portion becomes planar with other portions for each portion.

60-98 parts by weight of the copolymer obtained from at least 98-85% by weight of the alkyl ester monomer of acrylic acid or methacrylic acid and 2-15% by weight of the carboxyl group-containing copolymerizable monomer when the surface reinforcement is completed. An acrylic coating of 40-2 parts by weight was applied 1-2 times with a published roller. As this coating is cured with the acrylic resin coating material, despite the presence of the alkali component, it crosslinks to form a three-dimensional, dense coating film, thereby eliminating the effect of fluo-resonance, softening, and swelling due to leakage of cement components.

When the above secondary resin coating is completed, cement mortar containing a known waterproofing agent, for example, an ML waterproofing agent commercially available may be used as a ML waterproofing agent: cement ratio of 2: 1 to cement. Roller or brush together to form a tertiary coating film. After hardening for more than 1 day and completely cured, cement mortar containing rubber is plastered by a known method for 10 mm or more. The cement mortar used at this time is easy to plaster cement, sand, ML waterproofing agent to the rubber mixture used in the primary coating film. For example, 30-100 parts by weight of sand, 100-150 parts by weight of rubber mixture , By mixing in a proportion of 100-150 parts by weight of ML waterproofing agent and plastered about 10mm thickness to form a fourth waterproofing mortar layer. When left for 1 day or more, the fourth waterproof mortar layer was cured, and the acrylic resin-based mixture used in the third coating film was completely applied 1-2 times with a roller to form a final waterproof coating film.

When the above six coating layer formation is completed, the thing of the highest viscosity 1000cps (25 degreeC) is selected from a well-known epoxy resin material, and it coats three times by a well-known method, and the formation of the target waterproof layer is completed.

The waterproof layer according to the waterproofing layer forming method of the present invention is a high-polymeric acrylic acid copolymer of amino resin and amino resin having a strong three-dimensional network structure without any modification by alkali after sealing treatment containing a highly adhesive rubber material in cracks, depressions, etc. It adheres to the concrete surface, eliminating eruptions, ruptures and blocking. In addition, there is no softening or swelling due to moisture, which increases the physical and chemical stability of the cement containing the waterproofing agent deposited thereon. In addition, the intermediate adhesion between the acrylic resin and the cement waterproof mortar layer can be a strong adhesion of the waterproof mortar layer, there is no disadvantage that the waterproofness is weakened even after a long time use.

EXAMPLE

The inner wall of the concrete tank of the sewage purification tank was polished by a known sand blast to prepare the surface. The cracks and cavities were filled with a 1: 2 mixed solution of cement and isoprene rubber for each part to make the surface smooth. A copolymer obtained by copolymerizing 64% methyl methacrylate, 32% 2-ethylhexyl acrylate and 4% methacrylic acid and a melamine resin (water-soluble) in a ratio of 9: 1 was cured by applying a roller twice. Hot air may be added to promote hardening.

After hardening, apply water-resistant cement blended with M-L waterproofing agent and cement 2: 1 with a roller. After curing for 1 day, cement mortar with cement: isoprene rubber mixture solution: M-L waterproofing agent: sand 1: 1: 1: 1.5 was plastered to a thickness of 10 mm and cured again for 2-3 days.

The acrylic resin coating material was applied twice again to cure, and then the entire surface was coated with epoxy resin three times to form a waterproof layer.

After six months after the wastewater was filled into the purification tank obtained in the above-described example, no leakage was found, and when the surface was inspected after the wastewater was removed, cracks, softening, and discoloration were not found at all.

Claims (1)

In the surface treatment of concrete structures, surface cracks, depressions, and the like are filled with a mixture of rubber and cement, and a waterproof cement is applied after coating the entire surface of an acrylic resin material comprising a copolymer of acrylic acid and a carboxyl monomer and a water-soluble amino resin. After curing and waterproofing with cement and mortar made of rubber cement and sand and curing for several days, the entire surface of the acrylic resin paint is applied and then the epoxy resin paint is applied three times or more. Construction method.

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