LT4143B - Method for renovating of roof covering by making use of roll bitumen material - Google Patents

Abstract

The present invention relates to the building industry and may be used for restoring and preparing roofing made from bitumen-containing roll materials. This method may be used for restoring roofing while suppressing or minimising material losses and preventing fires. This operation can be carried out in any weather condition and with reduced labour. Once the section of the roofing to be restored has been cleaned, it is coated with a plasticizer. Channels are then formed in the depth of the roofing to be restored, and the entire outer surface of the section to be restored is heated in an enclosed air volume before being compacted.

Description

The invention relates to the field of above-ground construction, and more particularly to roofing materials made of flexible material, such as rolls, and can be used for the renewal of bituminous roller roofs.

There is a known method of repairing roll roofing materials (Ko3JiOBCKniži BM KpoB / iM M3 py / ioHHbix m LUTyMHbix MaTepiianoB M MX peMOHT.JleHM3flaT, 1945r. ., pp. 50-53), whereby the removal of steam air bubbles and bulges is effected by means of cross-cuts to a well-adhered area. It opens the ends of the bale at four corners and wipes off the old mastic as well as the layer below. The exposed areas are dried. During the winter, it uses a soldering lamp or heated irons for drying, hot mastic lubricates, dries the cut ends, glues the patch on top. To facilitate cleaning of raised ends, they are softened beforehand by a soldering iron or hot irons. When sealed, rolls in roller.

The disadvantage of the described method is that the restoration of the waterproofing properties of the roof covering is too time consuming and dangerous due to fire.

There is a known method of obtaining a waterproofing coating which involves the operation of bonding a roll material to a bituminous polymeric mastic, which is pre-applied to a bituminous substrate and then glued to an insulating substrate. The substrate surface shall be cleaned of debris and dirt prior to application. Holes and cracks are filled with cement mortar. The roll of waterproofing material is unwound on a substrate and left unrolled for at least 8 hours, then wrapped in adhesive liner (USSR Certificate of Authorization No. 1664994, E04D 15/06, 27.01.1991 ONLY).

The disadvantage of this method is that restoration of the waterproofing properties of the coating requires increased material costs. The method is difficult to use in all weather conditions.

The closest technical invention to the invention is the method of gluing roll roofing materials with adhesive layer (USSR Certificate of Authorization No. 1814680, ONLY E04D 15 / 06,1993 05 07 (Prototype). According to this method, prior to gluing the roll roofing material with adhesive layer the roofing material is heated from the side facing the roof and pressed tightly from above by the roller.

The prototype and the claimed invention have the following essential essential characteristics:

- cleaning of the roof area to be renewed:

- heating of the bituminous layer of the roll material;

- pressing of said web material.

The disadvantage of the prototype is that the renewed roofing material of bituminous roll material quickly loses its waterproofing properties.

The stated disadvantage is that micro-cracks appear in the roll-over layer of the roof covering area to be repaired. As a rule, the aforementioned materials in the underlays are always moisture and even water, so that the underlays have no waterproofing properties and, in case of waterproofing of the upper, newly laid roll roofing layer (expansion of micro-cracks), the moisture penetrates unhindered into the interior.

The present invention is intended to solve the problem of rebuilding bituminous roll roofing materials without using roll material and bitumen, preventing fire from occurring, and performing all kinds of rebuilding work with minimal labor costs.

The present invention guarantees a thermochemical treatment method and an even heating, evaporation, and removal of water from the old (for repair) coating of bituminous roll materials in the coating, by jetting, sintering and bonding of all bituminous roll materials to each other and to the concrete overlay. tightening.

The claimed invention has the following essential features in order to obtain the above technical result.

The method of renewing bituminous roll roofing includes cleaning the area of the renewed roof covering, warming the bituminous layers of the roll material, compressing the roll material.

After cleaning the recoatable surface, it is dragged by a plasticizer, followed by channels in the said recoil, into the depths of the recoat, and the roll material heats the bituminous layers through a closed volume of air over the entire external surface of the reclaimed area until molten channels appear. bitumen. Renewable roofing warms up to 210-220 ° C.

The invention claimed with respect to the prototype has the following distinctive features. Once the roof area has been cleaned, it is covered with plasticizer. The proprietary bitumen within the roofing area of the bituminous roll material dissolves. All bituminous strips of roll material under the influence of temperature and plasticizer are tightly bonded together.

The molten native bitumen flows through pre-pierced vertical channels to the surface of the roofing area being renewed and, under the action of a plasticizer, forms a continuous superficial layer of bitumen which, when thinly spread over the surface, seals any existing micro-cracks.

The plasticized surface layer of bitumen increases the viscosity, the bitumen does not fall and stick during the summer and it does not crack during the winter. Vertical ducts are made to the depth of the roofing area being renewed, including at the bulging areas.

Due to this distinctive feature, the moisture between the layers of the roll material is exposed to water vapor, which passes through the vertical channels, during the heating process of the roofing area being renewed. The melted proprietary bitumen pushes out water that cannot be turned into steam through vertical channels.

Most often this occurs in areas where water, vapor and air accumulate between the bulges of web material.

The roll material heats the bituminous layers through a closed volume of air over the entire outer surface of the paved area until melted bitumen appears through vertical channels.

The above-mentioned distinguishing feature of the proposed method is to freely remove the vapor that passes through the vertical channels by heating the area to be renovated. Intensive drying and impregnation of own bituminous roll bitumen takes place. After the said roll material is compressed with a special leveling roller, the coating area is cooled and a monolithic coating is formed.

The feature is that the area to be renewed warms up to 210-220 ° C, guaranteeing a quality refurbishment of the pavement, preventing the onset of fire.

There is a cause-effect relationship between the distinctive features and the technical result: the heating of the bituminous layers of the roll material through a closed volume of air over the entire external surface of the roofing area undergoing vertical ducts and plasticisation guarantees the thermochemical process.

To the applicant's knowledge, the proposed set of essential features characterizing the essence of the invention meets the criterion of novelty.

The present invention does not follow from the state of the art in a manner obvious to one skilled in the art. The totality of features characterizing the known methods of renewal of roofing materials from bituminous roll materials does not guarantee the acquisition of new properties, and only the presence of distinctive features allows to obtain new properties, a new technical result. That is, the proposed method meets the inventive level criterion.

The present invention is capable of many applications in the field of civil engineering by rebuilding a roofing material from bituminous roll materials, resulting in a technical result consisting of a thermochemical treatment method and uniform heating of all layers of old (repaired) roofing bituminous roll material, water evaporation and removal. jetting and bonding of bitumen contained in the roof covering to all layers of bituminous roll material, as well as to each other, to the clamping of the concrete overlay.

This leads to the conclusion that the claimed invention meets the criterion of industrial applicability.

The method is implemented as follows:

Renewable roofing materials from bituminous roll materials are cleaned of dirt, dust, various objects by mechanical or air blasting. Snow cover is applied manually or with a bulldozer with a small tractor.

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In winter conditions or in rainy weather, pre-dry the area where the roofing is to be renewed. After cleaning the reclaimed surface, it was attracted by a plasticizer, a refined oil product with a high aromatic hydrocarbon content (recycled engine oil). Thereafter vertical ducts are made to its depth within the specified roofing area, including at the bulging areas. The channels are made with a special pierced metal pin.

A device for warming the coating shall be placed on the surface of the surface cleaned and pre-soaked with plasticizer with vertical ducts made therein. The heater is made of a closed bottomless enclosure on all sides. Heating elements inside the enclosure.

It is worth using an electric air heater in combination with the control panel (Lithuanian Patent Application No. 1975, June 24, 1994), which creates a closed air volume that guarantees heating and drying of different configurations (flat, sloped, arched). During warming, the roofing area is dried, the moisture evaporates and the water is removed. The proprietary bitumen contained in the renewable roofing material melts. Under the influence of temperature and plasticizer, all layers of bituminous roll material overlap and the existing bitumen melted in the roofing material comes out to the surface through pre-punched channels and, under the action of the plasticizer, forms a continuous surface layer which spreads thinly over all micro-cracks.

In this way, the treated area is compressed by a special screed with a handle and a flat putty tool. At dawn, a monolithic coating is formed in the refurbished area. The upper plasticized surface layer has an increased viscosity, the bitumen loses and practically does not stick in summer, and during winter it does not crack.

Due to the presence of a temperature regulator in the electric air heater (Lithuanian Patent Application No. 1975, June 24, 1994), the enclosed air volume is heated to the melting point of the bitumen, eliminating the possibility of fire by renewing the coating in the proposed manner.

The results of the proposed method confirm its high efficiency:

- complete absence and, in some cases, minimal use of repair materials;

- guaranteed quality of work (guarantee up to 5 years);

- high throughput (up to 400 sqm of pavement per day);

- removal of moisture and drying of the coating;

- low cost of works;

- it is possible to remove any leakage of the coating at any time of the year.

Claims (2)

DEFINITION OF INVENTION What is claimed is: 1. A method of renewing roofing materials from bituminous roll materials, comprising cleaning the area of the renewed roofing material, warming the bituminous layers of the roll material, compressing the roll material by dragging it with a plasticizer after cleaning the area of the renewed roofing material. its depth is made by vertical ducts, also at the expansions, and the bituminous rolls are heated through a closed volume of air over the entire surface area of the exterior roofing to be renewed until molten bitumen emerges from the vertical ducts. 2. A method according to claim 1, characterized in that the renewed roofing area is heated to a temperature of 210-220 ° C.