sâmbătă, 30 septembrie 2017

Formwork accesories

Synthetic material spacers are, beside concrete spacers, the most popular group of reinforcement bar spacers. Such spacers are made of an impact-resistant material, they are also completely water-repellent. The structure of the spacers allows their full coverage with concrete, which increases the fire resistance level of the entire structure. In many European countries (i. e. Germany), fire resistance of spacers is neglected and treated as corresponding to the concrete class in a structure. Synthetic material spacers can be divided into a few groups:

for horizontal reinforcement bars – among them are linear or point spacers, they are characterised by great resistance to loads,

for vertical reinforcement bars – spacers, the structure of which allows them to be attached to vertical reinforcement bars by means of diverse clamps or fasteners,

for horizontal and vertical reinforcement bars – spacers having a small footprint, i. e. types DV, DST, are used in precasting plants.

TRICK linear plastic spacer

TRICK linear plastic spacer pad
Symbol	Concrete cover [mm]	Package bunch/pallet [mb]	Sales unit	Weight [kg/100 mb]	Art. no.
TRICK 15	15	100/5400	bunch	13,0	PA-PD-TS-0-01331
TRICK 20	20	100/6000	bunch	15,0	PA-PD-TS-0-01332
TRICK 25	25	100/5600	bunch	16,0	PA-PD-TS-0-01333
TRICK 30	30	100/3600	bunch	17,0	PA-PD-TS-0-01334
TRICK 35	35	60/2880	bunch	22,0	PA-PD-TS-0-01335
TRICK 40	40	60/2400	bunch	28,4	PA-PD-TS-0-01336
TRICK 50	50	60/1800	bunch	37,0	PA-PD-TS-0-01337

A modern, stable and universal use spacer made of synthetic material, with a length of 2000 mm. Allows achieving cover thickness values between 15 mm and 50 mm, side recesses reduce thermal expansion and allow the reinforcement bars and the spacer itself to be fully covered.

ISO-TRICK linear plastic spacer

ISO-TRICK linear plastic spacer
Symbol	Concrete cover [mm]	Package bunch/pallet [mb]	Sales unit	Weight [kg/100 mb]	Art. no.
ISO-TRICK 15	15	100/5400	bunch	14,0	PA-PD-TS-0-01290
ISO-TRICK 20	20	100/4800	bunch	17,0	PA-PD-TS-0-01291
ISO-TRICK 25	25	100/4200	bunch	18,0	PA-PD-TS-0-01292
ISO-TRICK 30	30	50/3600	bunch	21,0	PA-PD-TS-0-01293
ISO-TRICK 35	35	50/2880	bunch	29,0	PA-PD-TS-0-01294
ISO-TRICK 40	40	50/2400	bunch	34,9	PA-PD-TS-0-01295
ISO-TRICK 50	50	50/1440	bunch	49,5	PA-PD-TS-0-01296

Its advantage is the option of arranging it on a soft surface, i. e. styrofoam, mineral wool, bentonite or a binding layer. Spacer length: 2000 mm.

SUPER TRICK linear plastic spacer

SUPER-TRICK linear plastic spacer
Symbol	Concrete cover [mm]	Package bunch/pallet [mb]	Sales unit	Weight [kg/100 mb]	Art. no.
SUPER TRICK 15	15	100/5000	bunch	5,4	PA-PD-TS-0-01321
SUPER TRICK 20	20	100/5000	bunch	8,4	PA-PD-TS-0-01323
SUPER TRICK 25	25	100/5000	bunch	9,3	PA-PD-TS-0-01324
SUPER TRICK 30	30	100/5000	bunch	11,5	PA-PD-TS-0-01325
SUPER TRICK 35	35	80/3200	bunch	15,0	PA-PD-TS-0-01326
SUPER TRICK 40	40	80/3200	bunch	16,7	PA-PD-TS-0-01327
SUPER TRICK 45	45	80/3200	bunch	19,2	PA-PD-TS-0-01328
SUPER TRICK 50	50	80/3840	bunch	21,7	PA-PD-TS-0-01329
SUPER TRICK 60	60	82/3280	bunch	26,7	PA-PD-TS-0-01330

Stable linear spacing component for lower reinforcement layer, with a length of 2000 mm. Numerous openings allow proper coverage by concrete both of the rebar as well as the spacer. Thanks to this, such flaws as linear cracks where the reinforcement concrete component deflects.

DST linear plastic spacer

Podkładka plastikowa liniowa DST
Symbol	Concrete cover [mm]	Package bunch/pallet [mb]	Sales unit	Weight [kg/100 mb]	Art. no.
DST 15	15	100/5000	bunch	8,6	PR-PD-00-0-01724
DST 20	20	100/5000	bunch	9,0	PR-PD-00-0-01725
DST 25	25	100/4000	bunch	9,2	PR-PD-00-0-01726
DST 30	30	100/3000	bunch	9,6	PR-PD-00-0-01727
DST 35	35	100/1000	bunch	10,0	PR-PD-00-0-01728
DST 40	40	100/1000	bunch	10,6	PR-PD-00-0-01729
DST 45	45	100/1000	bunch	10,8	PR-PD-00-0-01730
DST 50	50	100/1000	bunch	11,2	PR-PD-00-0-01732

Synthetic material linear spacer for the lower horizontal reinforcement bar layer, utilised mainly in pre-casting plants. It is characterised by a small footprint, thanks to which it has limited visibility in the concrete on the non-processed surface. Specially shaped endings allow joining of the spacers in order to increase their joint length. Usable length per segment is 485 mm.

DVS linear plastic spacer with clamp

DVS linear plastic spacer with clamp
Symbol	Concrete cover [mm]	Package bag/pallet [pcs.]	Sales unit	Weight [kg/100 pcs.]	Art. no.
DVS 15	15	380/12160	bag	2,35	PR-PD-00-0-01717
DVS 20	20	350/11200	bag	2,45	PR-PD-00-0-01718
DVS 25	25	320/10240	bag	2,55	PR-PD-00-0-01719
DVS 30	30	280/8960	bag	2,65	PR-PD-00-0-01720
DVS 35	35	260/8320	bag	2,75	PR-PD-00-0-01721
DVS 40	40	200/6400	bag	2,85	PR-PD-00-0-01722
DVS 45	45	200/6400	bag	2,95	PR-PD-00-0-01723

Synthetic material spacer for lower layers of horizontal or vertical reinforcement bars, utilised mainly in pre-casting plants. It has limited visibility on non-processed surfaces. It has clamps helping to maintain the rebar at its designated spot. Spacing between clamps is 150 mm, total length 283 mm, width 48 mm.

DV linear plastic spacer

DV linear plastic spacer
Symbol	Concrete cover [mm]	Package bag/pallet [pcs.]	Sales unit	Weight [kg/100 pcs.]	Art. no.
DV 15	15	400/11200	bag	2,400	PR-PD-00-0-01709
DV 20	20	350/9800	bag	2,600	PR-PD-00-0-01710
DV 25	25	300/8400	bag	2,900	PR-PD-00-0-01711
DV 30	30	250/7000	bag	3,200	PR-PD-00-0-01712
DV 35	35	230/6440	bag	3,500	PR-PD-00-0-01713
DV 40	40	200/5600	bag	3,800	PR-PD-00-0-01714
DV 45	45	200/5600	bag	4,400	PR-PD-00-0-01715
DV 50	50	200/5600	bag	5,000	PR-PD-00-0-01716

Synthetic material linear spacer for the lower horizontal reinforcement bar layer, utilised mainly in pre-casting plants. It is characterised by a small footprint, it has limited visibility in structural concrete on non-processed surfaces. Specially shaped endings allow joining of the spacers in order to increase their joint length. Usable length per segment is 95 mm, lenght 215 mm.

RAS linear plastic spacer

RAS linear plastic spacer
Symbol	Concrete cover [mm]	Package bag/pallet [pcs.]	Sales unit	Weight [kg/100 pcs.]	Art. no.
RAS 15	15	300/12000	bag	0,196	PR-PD-00-0-05770
RAS 20	20	300/12000	bag	0,199	PR-PD-00-0-01055
RAS 25	25	300/12000	bag	0,202	PR-PD-00-0-05771
RAS 30	30	300/12000	bag	0,205	PR-PD-00-0-05772
RAS 35	35	300/9000	bag	0,208	PR-PD-00-0-05773

Spacer for horizontal rebar, mainly used at precasting plants. It is characterised by a small footprint, which causes it to be invisible in unprocessed external concrete components. Circle diameters between 180 mm and 315 mm.

PADIX point plastic spacer

PADIX point plastic spacer
Symbol	Rebar diameter Φ [mm]	Concrete cover [mm]	Package bag [pcs.]	Sales unit	Weight [kg/100 pcs.]	Art. no.
PADIX 15/4-12	4-12	15	1000	bag	0,24	PA-PD-TS-0-01250
PADIX 20/4-12	4-12	20	1000	bag	0,43	PA-PD-TS-0-01251
PADIX 20/6-20	6-20	20	250	bag	0,75	PA-PD-TS-0-01256
PADIX 25/4-12	4-12	25	1000	bag	0,62	PA-PD-TS-0-01257
PADIX 25/6-20	6-20	25	250	bag	0,85	PA-PD-TS-0-01262
PADIX 30/6-20	6-20	30	125	bag	1,40	PA-PD-TS-0-01268
PADIX 35/4-12	4-12	35	200	bag	1,04	PA-PD-TS-0-01271
PADIX 35/6-20	6-20	35	125	bag	1,808	PA-PD-TS-0-01274
PADIX 40/6-20	6-20	40	125	bag	1,870	PA-PD-TS-0-01282
PADIX 40/4-12	4-12	40	125	bag	1,670	PA-PD-TS-0-01279
PADIX 50/4-12	4-12	50	100	bag	2,280	PA-PD-TS-0-01283
PADIX 50/6-20	6-20	50	50	bag	2,360	PA-PD-TS-0-01286

PADIX – injection spacer characterised by enhanced resistance. Recommended for use for vertical rebar.

STYROFIX point plastic spacer

STYROFIX point plastic spacer
Symbol	Rebar diameter Φ [mm]	Concrete cover [mm]	Package bag [pcs.]	Sales unit	Weight [kg/100 pcs.]	Art. no.
STYROFIX 15	8-16	15/20	500	bag	1,10	PA-PD-TS-0-01315
STYROFIX 25	8-16	25/30	400	bag	1,30	PA-PD-TS-0-01316
STYROFIX 40	6-16	40/50	200	bag	2,20	PA-PD-TS-0-01317
STYROFIX 50	6-16	50/60	200	bag	2,50	PA-PD-TS-0-01318
STYROFIX 70	8-16	70/80	200	bag	3,50	PA-PD-TS-0-01319
STYROFIX 90	8-16	90/100	100	bag	4,70	PA-PD-TS-0-01320

Spacer foreseen for reinforcement bars laid out on a soft layer, i. e. styrofoam, mineral wool, bentonite matt or directly on the soil. Depending on the layout of the rebar on the spacer, two cover thickness values may be attained.

FIX point plastic spacer

FIX point plastic spacer
Symbol	Rebar diameter Φ [mm]	Concrete cover [mm]	Package bag [pcs.]	Sales unit	Weight [kg/1000 pcs.]	Art. no.
FIX 15	4-16	15	1000	bag	4,00	PA-PD-TS-0-01297
FIX 20	4-16	20	500	bag	5,00	PA-PD-TS-0-01299
FIX 25	4-16	25	500	bag	5,70	PA-PD-TS-0-01300
FIX 30	4-16	30	250	bag	6,60	PA-PD-TS-0-01302
FIX 35	4-16	35	250	bag	7,30	PA-PD-TS-0-01303
FIX 40	4-16	40	250	bag	8,20	PA-PD-TS-0-01304
FIX 45	4-16	45	125	bag	9,20	PA-PD-TS-0-01305
FIX 50	4-16	50	125	bag	10,40	PA-PD-TS-0-01306

Spacer with a special clamp. Maintains stability and binds well with concrete.

BARYŁKA point plastic spacer

BARYŁKA point plastic spacer
Symbol	Rebar diameter Φ [mm]	Concrete cover [mm]	Package bag [pcs.]	Sales unit	Weight [kg/100 pcs.]	Art. no.
BARYŁKA 15	6-14	15	500	bag	4,20	PA-PD-TS-0-01310
BARYŁKA 20	6-14	20	500	bag	4,30	PA-PD-TS-0-01311
BARYŁKA 25	6-14	25	500	bag	4,40	PA-PD-TS-0-01313
BARYŁKA 30	6-14	30	500	bag	4,90	PA-PD-TS-0-01314

Spacer used for horizontal reinforcement systems. Equipped with clamps protecting the spacer against shifting.

KOŚĆ point plastic spacer

KOŚĆ point plastic spacer
Symbol	Rebar diameter Φ [mm]	Concrete cover [mm]	Package bag [pcs.]	Sales unit	Weight [kg/500 pcs.]	Art. no.
KOŚĆ 15/20/25	6-14	15/20/25	500	bag	2,72	PA-PD-TS-0-01309
KOŚĆ 20/25/30/35	6-14	20/25/30/35	500	bag	6,76	PA-PD-TS-0-01312
KOŚĆ 20/25/30	6-14	20/25/30/	500	bag	4,08	PA-PD-TS-0-16970

Spacer for horizontal reinforcement bars. Allows for five different concrete cover thickness values of 15 mm, 20 mm, 25 mm, 30 mm and 35 mm depending on the spacer type, its mode of layout on the surface and the specific layout of reinforcement bars.

Formwork accesories

Banda etansare pvc interna pentru rosturi de dilatatie

Banda etansare pvc interna pentru rosturi dilatatie

Banda etansare pvc interne pentru rosturi dilatatie :

Rosturile de dilatare sau de deplasare sunt rosturile cu un spatiu intermediar si cu o latime anume pe intreaga grosime a elementelor de constructie, care permit deplasarea elementelor de constructie ca urmare a modificarilor de temperatura.

Pentru etansarea rosturilor de dilatare sunt necesare elemente de etansare care, prin geometria si compozitia lor sunt capabile sa preia fara pierderi deformarile. De regula, se folosesc benzi de rosturi de dilatare interioare si exterioare din elastomer sau termoplast. In cazuri speciale se monteaza benzi de inchidere a rosturilor, montaje cu clema sau etansari prin adeziune. Figura 2.9 reda o scurta prezentare.

banda etansare pvc

Profile etansare interne pentru rosturi de dilatatie Seria D fabricate din Besaflex PVC-P

[table id=25 /]

Profile etansare interne pentru rosturi de dilatatie Seria D fabricate din Nitrfilex cf.DIN 18541

[table id=26 /]

Profile etansare interne pentru rosturi de dilatatie Seria FM fabricate din Elastoflex cf. DIN 7865

[table id=27 /]

Profile etansare interne pentru rosturi de dilatatie Seria DP fabricate din Polyflex

[table id=28 /]

Profile etansare interne pentru rosturi de dilatatie Seria CE fabricate din Besaflex cf. Standard Britanic

[table id=29 /]

Profile etansare interne pentru rosturi de dilatatie Seria D-BS fabricate din Nitriflex cf. DIN 18541

[table id=30 /]

Profile etansare interne pentru rosturi de dilatatie Seria FMS fabricate din Elastoflex cf. DIN 7865

[table id=31 /]

Profile etansare interne pentru rosturi de dilatatie Seria FMS-DS fabricate din Elastoflex cf. DIN 7865

[table id=32 /]

Profile etansare interne pentru rosturi de dilatatie Seria FM-DS fabricate din Elastoflex cf. DIN 7865

[table id=33 /]

Va rugam sa verificati Proprietatile Materialelor inainte de a comanda facand click aici:

Conexiuni/suduri

Pe santier se pot executa doar suduri de baza , cele complexe se vor face la furnizor

Sudurile profilelor hidroizolante se face doar de catre o persoana calificata, instruita in prealabil de furnizor

Temperatura mediului de lucru sa nu fie sub 0 grade

Materiale termofuzibile:

Besaflex

Nitriflex

PolyflexTPE

Materiale nonfuzibile ( se vulcanizeaza )

Elastoflex

Lungimea capetelor ce trebuie pastrate:

Lungimea in vederea sudurii 50 cm

Lungimea formatelor din fabrica 50 cm

Lungimea capetelor profilelor in cazul sectiunilor de beton diferite 100cm

Piese de intersectare

banda etansare pvc , banda etansare pvc , banda etansare pvc , banda etansare pvc , banda etansare pvc

[hcolumns]

[columnhelper col-md-6]

[columnhelper col-md-6]
[/hcolumns]

[hcolumns]

[columnhelper col-md-6]

[/hcolumns]

Banda etansare pvc interna pentru rosturi de dilatatie

Protectie conducte

Protectie anticoroziva a tevilor

Bandajele produse de Hidroplasto sunt realizate din HIDROBIT de calitate superioara. Materialul imbina caracteristicile pozitive ale materialelor sintetice ( polietilena ) cu cele oferite de bitum. HIDROBIT se caracterizeaza printr-o capacitate de intindere biaxiala ridicata si prin flexibilitate,precum si printr-o rezistenta ridicata la fisurile produse de tensiune si prin tenacitatea si la temperaturi scazute. Nu prezinta doar o rezistenta deosebita la imbatranire si la incalzire, ci se remarca de asemenea prin stabilitate termica si compatibilitate cu mediul inconjurator.

Posibilitati de utilizare

Bandajele HIDROBIT sunt utilizate pentru o varietate deosebita de constructii, fiind respectate concomitent urmatoarele cerinte :

– Stratificare elastica

– Protectie anticoroziva

– Amortizare a oscilatiilor, respectiv amortizare a vibratiilor

– Izolatie la caldura / la frig.

EXEMPLU DE UTILIZARE : Pre-garnituri la nivelul zidariei expuse la solicitarea la forfecare, rezemarea de conducte

Pentru conducte ingropate ( titei; conducte de alimentare cu apa; apa turbinata; magistrale de gaz,etc.), din considerente specifice tehnicii de exploatare se impune realizarea de constructii de beton ( camine de vizitare pentru efectuarea operatiunilor de golire, pentru aerisire, pentru verificare etc. ).

In sectiunile in care conducta patrunde prin peretele putului este evitata o solicitare foarte ridicata la forfecare ca urmare a variatiilor de temperatura prin utilizarea de presetupe de zidarie. Aceste presetupe de zidarie realizate din bandaje HIDROBIT preiau in cazul puturilor aflate in stratul de apa din panza freatica si o functie de etansare ( Bandaje de tipul RL 500 ). Alternativ la rezemarea in forma d nsa a conductei cu bandaje compacte este posibila si utilizarea de bandaje profilate de tip SL 500, care sunt pozate in patul de mortar cu latura profilata orientata in jos. Tipuri de bandaj sunt: GL 400 si 500, RL 500, SL 500 si sunt exemplificat in ordine in imaginea de mai jos.

Aplicarea de bandaje HIDROBIT pe suprafete

Pentru lipirea la rece a bandajelor pe suprafetele de otel pe care este aplicat un grund din rasina epoxidica poate fi utilizat un adeziv de contact pe baza de cauciuc.

Suprafetele neprelucrate ale otelului vor fi sablate cu nisip si prevazute cu un grund realizat ca strat dublu de bitum aplicat la rece pentru o aderenta superioara. In mod suplimentar se poate aplica un strat cu bitum cald, inainte de aplicarea bandajelor topite pe zona inferioara. Bandajele HIDROBIT pot fi aplicate cu aparat de sudura cu aer cald sau cu pana de sudura, respectiv cu lama de sudura.

Rosturile de imbinare intre desfasurarile individuale de bandaje vor fi inchise prin topire cu flaca de gaze si cu vopsirea ulterioara a masei plastifiate de HIDROBIT.

bandaje-lucobit-pentru-conducte-si-rezervoare-1-638

Protectie conducte

KAB SEALING BAND

Sealing band

The type Kab sealing band with swell profile is a fusion of advantages of two different sealing materials for day joints. It utilises the advantages of sealing bands and swell materials. The structure of the type Kab band is reminiscent of a single arm of day joint seal tape with a round swell profile embedded in the lower part of the band.

A decisive advantage of the type Kab seal bands with swell profile is the option of installing them on the top reinforcement lattice of foundation slabs and footing without interference in the course and shape of the bars.Such a structure of the Kab bands prevents free flow of water in the swelling part by causing a pressure of the swell profile, and ensures at the same time a seal of the wall in the area of the ribbed arm.

GENERAL INFORMATION

Product description

The type Kab sealing band with swell profile is a fusion of advantages of two different sealing materials for day joints. It utilises the advantages of sealing bands and swell materials. The structure of the type Kab band is reminiscent of a single arm of day joint seal tape with a round swell profile embedded in the lower part of the band.

Such a structure of the Kab bands prevents free flow of water in the swelling part by causing a pressure of the swell profile, and ensures at the same time a seal of the wall in the area of the ribbed arm.

Property	Unit	Requirements	Tested per
External form	–	No cracks, rifts	Visual evaluation
Shore hardness	˚Sh	83±5	PN-EN ISO 868:2005
Stretch resistance	MPa	≥ 8	PN-EN ISO 527-2:1998
Relative elongation at break	%	≥ 200	PN-EN ISO 527-2:1998
Shear resistance	N/mm	≥ 12	PN- ISO 34-1:2007
Low temperature behaviour, -20 ˚C, relative elongation at break	%	≥100	PN-EN ISO 527-2:1998

Usage

Seal bands with swell profiles, of type Kab 125 and type Kab 150 are used to protect concreting day joints at the intersection of bottom slabs and walls. These bands may be concreted already during the first phase of concreting work at a depth of 30-50 mm. This allows the cover of the top slab reinforcement as housing for the band, and does not require intervention in the shape and course, in a protected structure, of the reinforcement bars. This also eliminates the necessity of having to make an interlock in the slab for the purpose of embedding the band.

Limiting subsequent actions related to embedding the band at the intersection between slab and wall are a clear time-saving measure that allows one to reduce the cost of work related to the usage of additional installation materials. In order to maintain proper embedding in the concrete at the first stage of concreting of type Kab bands, a chalk band is useful, in the form of a flat band running along its axis.

Such bands have been for years successfully used in sewage treatment plants, swimming pools, liquid tanks and in residential housing. Kab bands should be used when these structures are under load by liquids with maximum hydrostatic pressure not exceeding 0,2 MPa.

Storage

The band must be stored in cardboard boxes as delivered by the manufacturer. They should be placed on a pallet, on a stable surface, protecting them from tipping over. Due to the characteristics of the utilised material, including swelling in humid conditions, they have to be stored in a cool and dry place.

Kab sealing band
Symbol	h [mm]	a [mm]	Package box/pallete [mb/pcs.]	Sales unit

Weight
[kg/mb]
Art. no.
Type Kab 125 seal band with swell profile1255÷625/8box1,05SU-TU-KB-0-02354Type Kab 150 seal band with swell profile1505÷625/8box1,20SU-TU-KB-0-02356Type KS 125 assembly rail125—0,16SU-TU-KB-0-02351Type KS 150 assembly rail150—0,23SU-TU-KB-0-02352Type VSB installation clamp150—0,10SU-TU-KB-0-02349

INSTALLATION

Before concreting of the foundation slab, the type Kab seal band with the swell profile is affixed directly to the upper reinforcement lattice. The attachment is executed using type VSB installation clamps in the form of a bent bar having the shape of the Greek letter Ω (omega), using at least 2 pcs/r. m. of band. Their special shape prevents later water penetration at the mounting spots.

The mounting shackles must be joined permanently with mounting wire to the slab rebar. After concreting of the bottom slab, the type Kab seal band with swell profile is embedded within concrete at a depth of approx. 30-50 mm. The concrete mix that may at that time cause unevenness or flaws, needs to be evened out. The part of the band protruding outside of the slab surface outline needs to be concreted within the wall in the second phase of concreting work.

A decisive advantage of using type Kab seal bands with swell profile is their size and weight. They take up little space during storage, and their low weight facilitates quick and easy installation. The flexible material, of which they are made, allows one to protect designed structures having circular form or various wall arrangements. At corners of buildings where Kab bands were used, the person unfurling the band must provide it with the shape that the wall takes, through appropriate bending.


Step 1. Layout of the band on the reinforcement lattice.

Step 2. Attachment of assembly clamps.	Step 3. Band joining.

Step 4. Foundation slab concreting.	Step 5. Wall concreting.

Joining bands

In work conditions of installation of Kab bands at the construction site, it often becomes necessary to join subsequent band segments. This can be done in two ways:

by using type KS system assembly rails,

by welding, using a small welder’s axe or a hot air blower.

Joining bands using type KS assembly rails can be done at any construction site and in any atmospheric conditions allowing normal work. The rail, specially designed for assembly work, is a set of components joined together by screws. The component is made up of two flat compression profiles and three bands of swell material joined by screws with wing nuts.

Before a joint is made, one has to make openings in the ends of the band rolls to be joined, either by a centre punch or by drilling. One can use, during this, a metal flat profile as a matrix to position the holes appropriately. The ready joint is a layered component made of the type Kab band and bands of swell materials between them, and flat profiles on the outside (see figure below).

More experienced installation specialists may join bands by welding using electric welders. Before the type Kab seal band ends are gently melted a bit, the swell profile needs to be extended a bit out of the lower band end. After the ends of the rolls to be joined are heated, until the flexible material flows out at the axe’s edge, they must be pressed on one another.

After making such a joint, the swell component must be put in its place. A different method of welding seal bands with swell profiles is executing overlay joints with at least 5 cm in length. During this operation, one has to take care to precisely melt and join together the ribbed band sections.

Joining bands using an assembly rail

Joining bands by welding an overlay section

KAB SEALING BAND

CONTROLLED CRACK INDUCER PIPES

CRACK INDUCER PIPES

Singular continued concreting of reinforced concrete walls and walls of water tanks at long sections, however, requires certain knowledge of the properties of concrete and later rheologic influence on the behaviour of the entire structure.

In terms of structure tightness, however, very important are additional concrete deformations that take place during the use of the structure, occurring due to concrete contraction and creep. In order to limit the emergence of uncontrolled fractures and the costly and time-consuming repair work occurring because of this, controlled crack inducer pipes should be used. Their two-stage behaviour weakens, in a controlled manner, the wall cross-section, causing vertical cracks along the weakening profile, and ensures tightness by virtue of sealing anchors.

GENERAL INFORMATION

General information

Singular continued concreting of reinforced concrete walls and walls of water tanks at long sections, however, requires certain knowledge of the properties of concrete and later rheologic influence on the behaviour of the entire structure. In terms of structure tightness, however, very important are additional concrete deformations that take place during the use of the structure, occurring due to concrete contraction and creep.

By virtue of complexity of rheologic effects and complicated mathematical procedures, as well as numerous assumptions of the threshold state to be made during the calculation of these parameters, they are often neglected in terms of strength calculations for structures. In such cases, the designer’s role is often limited to including maximum expansion joint spacings in the design, indicating the minimum reinforcement field and the guidelines to be fulfilled with respect to concrete layout and care.

Engineering practice shows, however, that such means are not always sufficient. The result is wearing of shields. The difficulty of achieving good seals, and sometimes of indicating of the proper leak spots, the emerged cracks, may reduce the usability of a structure and greatly increase its usage costs. From the practical standpoint, the following is worth quoting:

‘Prevention is better than cure’ with respect to repair of cracked shields. Seeking to limit uncontrolled reinforced concrete wall fractures, one available solution is weakening of the wall cross-section through creation of precisely positioned vertical cracks. The use of Besaflex type S induced crack piping additionally protects the created crack from penetration by pressing water using the labyrinth effect.

Properties	Unit	Requirements	Tested per
External form	–	No cracks, rifts	Visual evaluation
Shore hardness	˚Sh	83±5	PN-EN ISO 868:2005
Stretch resistance	MPa	≥ 9	PN-EN ISO 527-2:1998
Relative elongation at break	%	≥ 200	PN-EN ISO 527-2:1998
Shear resistance	N/mm	≥ 8	PN- ISO 34-1:2007
Low temperature behaviour, -20 ˚C, relative elongation at break	%	≥100	PN-EN ISO 527-2:1998

Controlled crack inducer pipe
Symbol	a [mm]	d [mm]	f [mm]	Wall width [mm]	Package [pcs./pallete]	Sales unit	Weight [kg/mb]	Art. no.
Type H1 L=3 m	128	88	25	240÷350	100	pcs. = 3m	2,80	SU-TU-RR-0-02357
Type H1 L=4 m						pcs. = 4m		SU-TU-RR-0-02358
Type H1 L=5 m						pcs. = 5m		SU-TU-RR-0-02359
Type H2 L=3 m	235	175	25	350÷500	50	pcs. = 3m	5,50	SU-TU-RR-0-02360
Type H2 L=4 m						pcs. = 4m		SU-TU-RR-0-02361
Type H2 L=5 m						pcs. = 5m		SU-TU-RR-0-02362
Type H2 L=7 m						pcs. = 7m		SU-TU-RR-0-02363
Type H3 L=3 m	110	60	25	170÷240	120	pcs. = 3m	2,00	SU-TU-RR-0-02364
Type H3 L=4 m						pcs. = 4m		SU-TU-RR-0-02365
Type H3 L=5 m						pcs. = 5m		SU-TU-RR-0-02366

Usage

Hidroplasto controlled induced crack pipes should be used at sites under threat of influence of liquids under hydrostatic pressure or of groundwater, for which the formwork or concreting technology requires the works to be carried out along large wall sections. The induced crack pipe selection depends on the thickness and height of the component to be weakened. No joined pipes should be used, and no piping composed of short sections should be used either. The axial separation of the selected controlled induced crack pipes depends on the following formula:

where:

R – axial pipe spacing,

h – height of component to be weakened,

g – component thickness.

INSTALLATION

Hidroplasto induced crack pipes should be installed using a maximum axial separation calculated using the formula (R). Before installation, between the wall reinforcement bars, the pipes need to be cut a bit on the underside, to allow overlay onto the sealing tape embedded at the joint of the slab with the wall.

The cut should be executed perpendicular to the smooth weakening profile niches, with a length allowing embedding of the pipe on a band at a height of 5 cm above the slab face. The induced crack pipe and the external reinforcement arrangement are best trimmed to size directly at the construction site. All works related to the placement of the pipe at the target location are best done before execution of the horizontal wall reinforcement bars and arrangement of the formwork hindering access and the installation specialist’s range of motion.

The controlled induced crack pipe should be embedded in a stable manner on the internal day joint band or the sealing sheet steel. At the same time, sealing anchors should be tied to the wall beginning bars using installation grips and tie wire, utilising at least 8 pcs./running metre.

During concreting works, make sure that the height of the laid out concrete mix is equal on both sides of the pipe. After the pipes are concreted up to the desired height, the interiors of the induced crack pipes must also be filled. The pipe placed for rigidity must not be removed.


Step 1. Concreting of the sealing band at the slab-wall intersection	Step 2. Cutting of the pipe underside and trimming to size.

Step 3. Embedding pipes on the sealing band and mounting to reinforcement bars.

Step 4. Embedding edge beams and arranging the formwork.	Step 5. Wall concreting.

Concreting phases


Step 1. Wall formwork set-up.	Step 2. Concreting of the lower part of the entire wall.

Step 3. Concreting the wall to its designated height.	Step 4. Concreting of the controlled induced crack pipe interior.