Biokorroziya: protection bases

Question: Why there are biodamages of structures?
The answer: the Circle of biodamaging agents is wide enough, beginning from bacteria, mushrooms, lichens, mosses and finishing fishes, birds and mammals.
Objects of biodamages to building are wood, a brick, concrete, metal, hardware, materials on the basis of polymers, etc.
For protection of building designs against biocorrosion special preparations which name biotsidnyimi additives are created. It gives the chance to struggle with biodamages at differentstages of defeat of designs: they can be applied as at the building beginning, and while in service buildings.

Question: How biodamages are formed?
The answer: by Researches it is established, that physical, chemical and biological factors of corrosion of building solutions and concrete are in close interrelation. As concrete is a capillary-porous body, it gives the chance to microorganisms to settle easily on a surface and then to extend deep into, causing products of the ability to live corrosion processes. The basic processes of destruction are caused by action of the acids allocated in the course of ability to live of microorganisms.

Question: What itself concrete corrosion represents?
The answer: concrete Corrosion is an aggravation of characteristics and properties of concrete as a result of washing away or vyischelachivaniya from it:
  • Soluble components (corrosion of the first kind);
  • Formations of products of the corrosion which does not have knitting properties (corrosion of the second kind);
  • Accumulation malorastvorimyih the crystallising salts increasing volume of its firm phase (corrosion of the third kind).

Question: How designs with the help biotsidnyih additives are restored?
The answer: At realisation of repair-regenerative works with use biotsidnyih additives execute following actions:
  • The restored surface infected with microorganisms, carefully clear mechanically (shpatelem, a metal brush or the similar tool), and on a dense surface open an outside layer with thickness not less than 5 mm. It is necessarily conducted obespyilivanie.
  • After mechanical clearing a surface disinfect dezinfektantom. For example, a water solution chloric to exhaust (100-200 g/l), copper kuporosa (20-30 g/l), kremneftoristogo sodium or fluoric kaliya (10-15 g/l). Dezinfektant put on a surface a brush or in the mechanised method for once.
  • After disinfection the surface of building designs should be dried within days at temperature 15-20°S and relative humidity to 70 %.
  • Put biotsidnyie additives.

Question: What biotsidnyie are desirable for using additives at a structure of cellars and pools?
The answer: the cement-sandy mix with special additives with hydroisolating and biotsidnyimi properties Gidro-S 11 Will approach. It is applied without any additional waterproofing, maintains pressure of water not less than 12 atm/sm І, has the high durability raised by frost resistance and bezusadochnostyu. And also does not allow microorganisms to "lodge" on a design.

Question: How to work with material Gidro-S 11?
The answer: Usually this mix of 8-9 l on a sack shut water from account of 50 kg. A solution carefully mix not less than 7 minutes. The received mix can be put manually, rastvoronasosami or torkretirovaniem. Work can be considered finished only after the surface will be carefully jammed. The basis on which the solution is put, should be obligatory pure, rigid, without stratifications and painted plots, and also without fat stains. At oshtukaturivanii apply reinforcing grid which should be on otnose from a bearing design not less than on 5 mm. In case of occurrence of shrinkable cracks for the second or third day after their closing-up it is necessary to jam carefully initial structure. The plastered surfaces and concrete designs are necessary for supporting in a damp condition and to preserve against drying within the first 10-14 days after manufacturing. Complete water resistance attacks 28 days tverdeniya in natural conditions.

Question: What itself represents biotsidnyiy material Gidroteks-P?
The answer: It is a hydroisolating material of getting action and an effective remedy destroying and suppressing fungoid formations on concrete and stone designs. The action principle consists in penetration under the influence of osmotic pressure of chemically active substances in capillary-porous structure of concrete where, interacting with components of a cement stone, they form the insoluble threadlike crystals which are filling in microcracks, a time and concrete capillaries. Filling in a time, crystals of a hydraulic engineering mix condense concrete structure, thereby blocking access for water, but not for air.
Material have prepared L.RUDNITSKY, E. ABISHEV, A.ZHUKOV, And. SAHIBZADINOV Source: the Newspaper "Building" #18 (2006) heading «Stroyinform»

It is introduced: on May, 23rd, 2006

Biokorroziya: protection bases

Question: Why there are biodamages of structures?
The answer: the Circle of biodamaging agents is wide enough, beginning from bacteria, mushrooms, lichens, mosses and finishing fishes, birds and mammals.
Objects of biodamages to building are wood, a brick, concrete, metal, hardware, materials on the basis of polymers, etc.
For protection of building designs against biocorrosion special preparations which name biotsidnyimi additives are created. It gives the chance to struggle with biodamages at differentstages of defeat of designs: they can be applied as at the building beginning, and while in service buildings.

Question: How biodamages are formed?
The answer: by Researches it is established, that physical, chemical and biological factors of corrosion of building solutions and concrete are in close interrelation. As concrete is a capillary-porous body, it gives the chance to microorganisms to settle easily on a surface and then to extend deep into, causing products of the ability to live corrosion processes. The basic processes of destruction are caused by action of the acids allocated in the course of ability to live of microorganisms.

Question: What itself concrete corrosion represents?
The answer: concrete Corrosion is an aggravation of characteristics and properties of concrete as a result of washing away or vyischelachivaniya from it:
  • Soluble components (corrosion of the first kind);
  • Formations of products of the corrosion which does not have knitting properties (corrosion of the second kind);
  • Accumulation malorastvorimyih the crystallising salts increasing volume of its firm phase (corrosion of the third kind).

Question: How designs with the help biotsidnyih additives are restored?
The answer: At realisation of repair-regenerative works with use biotsidnyih additives execute following actions:
  • The restored surface infected with microorganisms, carefully clear mechanically (shpatelem, a metal brush or the similar tool), and on a dense surface open an outside layer with thickness not less than 5 mm. It is necessarily conducted obespyilivanie.
  • After mechanical clearing a surface disinfect dezinfektantom. For example, a water solution chloric to exhaust (100-200 g/l), copper kuporosa (20-30 g/l), kremneftoristogo sodium or fluoric kaliya (10-15 g/l). Dezinfektant put on a surface a brush or in the mechanised method for once.
  • After disinfection the surface of building designs should be dried within days at temperature 15-20°S and relative humidity to 70 %.
  • Put biotsidnyie additives.

Question: What biotsidnyie are desirable for using additives at a structure of cellars and pools?
The answer: the cement-sandy mix with special additives with hydroisolating and biotsidnyimi properties Gidro-S 11 Will approach. It is applied without any additional waterproofing, maintains pressure of water not less than 12 atm/sm І, has the high durability raised by frost resistance and bezusadochnostyu. And also does not allow microorganisms to "lodge" on a design.

Question: How to work with material Gidro-S 11?
The answer: Usually this mix of 8-9 l on a sack shut water from account of 50 kg. A solution carefully mix not less than 7 minutes. The received mix can be put manually, rastvoronasosami or torkretirovaniem. Work can be considered finished only after the surface will be carefully jammed. The basis on which the solution is put, should be obligatory pure, rigid, without stratifications and painted plots, and also without fat stains. At oshtukaturivanii apply reinforcing grid which should be on otnose from a bearing design not less than on 5 mm. In case of occurrence of shrinkable cracks for the second or third day after their closing-up it is necessary to jam carefully initial structure. The plastered surfaces and concrete designs are necessary for supporting in a damp condition and to preserve against drying within the first 10-14 days after manufacturing. Complete water resistance attacks 28 days tverdeniya in natural conditions.

Question: What itself represents biotsidnyiy material Gidroteks-P?
The answer: It is a hydroisolating material of getting action and an effective remedy destroying and suppressing fungoid formations on concrete and stone designs. The action principle consists in penetration under the influence of osmotic pressure of chemically active substances in capillary-porous structure of concrete where, interacting with components of a cement stone, they form the insoluble threadlike crystals which are filling in microcracks, a time and concrete capillaries. Filling in a time, crystals of a hydraulic engineering mix condense concrete structure, thereby blocking access for water, but not for air.
Material have prepared L.RUDNITSKY, E. ABISHEV, A.ZHUKOV, And. SAHIBZADINOV Source: the Newspaper "Building" #18 (2006) heading «Stroyinform»

It is introduced: on May, 23rd, 2006

Biokorroziya: protection bases
Question: Why there are biodamages of structures?The answer: the Circle of biodamaging agents is wide enough, beginning from bacteria, mushrooms, lichens, mosses and finishing fishes, birds and mammals.Objects of biodamages to building are wood, a brick, concrete, metal, hardware, materials on the basis of polymers, etc.For protection of building designs against biocorrosion special preparations which name biotsidnyimi additives are created....
Uteplenie at home: the severe frost is powerless before penoizolom
Question: What represents teploizoliruyuschiy a material «penoizol»?The answer: Penoizol — ecologically pure, fireproof material applied to thermal isolation as centre of building designs, for warming of floors, walls, ceilings, roofs both inhabited, and industrial buildings. Warming penoizolom of 10 sm reduces in the thickness expenses for heating several times, paying expenses on warming in a cold season.Question: What technical characteristics...
Terminyi lakokrasochnika
Paint Homogeneous suspensions of pigments in film-forming substances. Consists from:· the binding;· pigments;· napolniteli· solvents;· target additives Adhesion Coupling of surfaces of diverse bodies. It Is reached at drawing of galvanic and paint and varnish covers, pasting, weldings, etc., and also at formation of superficial films (for example, okisnyih, sulphidic)  Acryle  Type of the binding TD>Alkidno-uretanovaja...
Materials for monolithic building
Question: How to define requirement for the basic materials at building of a monolithic building?The answer: On the average the cost of concrete for 1 m І a total area of floors makes from 0,4 to 0,7 cubic m, steels — from 25 to 70 kg.Question: What cements use at manufacturing of concrete in monolithic building?The answer: For vyisokoarmirovannyih and...
Zaschita a tree from fire, or Self-attenuation is guaranteed
Question: How to define fire resistance of the impregnated wood?The answer: the Basic indicator of firmness of the impregnated wood is its group of combustibility defined in the course of certified tests. If the wooden design is impregnated qualitatively at contact to a burning match or an ignition paper will not occur. At long contact to fire it can start...
Zaschita from equipment corrosion in pools
Question: to What types of corrosion it is subject basseynovoe the equipment?The answer: Skilled experts in operation of pools speak about following types of corrosion:Corrosion in cracks. It is difficult to avoid cracks in ladders, for example there where the step is screwed on a bar. In such cracks adjournment with the big contents of chlorides can accumulate. The passivation...
Zaschita from equipment corrosion in pools
Question: to What types of corrosion it is subject basseynovoe the equipment?The answer: Skilled experts in operation of pools speak about following types of corrosion:Corrosion in cracks. It is difficult to avoid cracks in ladders, for example there where the step is screwed on a bar. In such cracks adjournment with the big contents of chlorides can accumulate. The passivation...
Gidroizolyatsionnyie materials
Question: What materials are applied at fulfilment of a painting waterproofing?The answer: Apply a painting waterproofing basically to protection against a capillary moisture, and sometimes and from filtering water.The typical design of cover consists of a first coat a varnish similar to the basic painting material, put in one layer, and painting cover from three-four layers. At a choice of...
Samoe important in pool is a strong bowl
Question: What technologies of concreting of a bowl of pool?The answer: the Most reliable technology — the continuous casting guaranteeing against occurrence of bowls, cracks and, as consequence, — large leakings. She requires application avtobetonosmesiteley, avtobetononasosov, that rather zatratno. Furthermore to perform this work it is necessary simultaneously with «a zero cycle», and at the building initial stage seldom who...
Kak to make armature durable?
In ferro-concrete designs of industrial buildings, structures of bridges, berthes and other objects destruction of a protective layer of concrete and armature corrosion can be found out in 5-20 years. In what the reason?To the factors initiating and strengthening this negative process, it is necessary to carry, first of all, water penetration of concrete, penetration into it of aggressive gases...
Kak to make armature durable?
In ferro-concrete designs of industrial buildings, structures of bridges, berthes and other objects destruction of a protective layer of concrete and armature corrosion can be found out in 5-20 years. In what the reason?To the factors initiating and strengthening this negative process, it is necessary to carry, first of all, water penetration of concrete, penetration into it of aggressive gases...
Kak to make armature durable?
In ferro-concrete designs of industrial buildings, structures of bridges, berthes and other objects destruction of a protective layer of concrete and armature corrosion can be found out in 5-20 years. In what the reason?To the factors initiating and strengthening this negative process, it is necessary to carry, first of all, water penetration of concrete, penetration into it of aggressive gases...
Kak to make armature durable?
In ferro-concrete designs of industrial buildings, structures of bridges, berthes and other objects destruction of a protective layer of concrete and armature corrosion can be found out in 5-20 years. In what the reason?To the factors initiating and strengthening this negative process, it is necessary to carry, first of all, water penetration of concrete, penetration into it of aggressive gases...