Deys Betontechniek Nederland BV
Gelreweg 5, 3843 AN Harderwijk
Postbus 330, 3840 AH Harderwijk
http://www.deys.nl

Telephone +31 (0)341 41 51 48
(24 hr / day)
Fax (0341) 42 54 90
info@deys.nl

BETEC AM

Description

BETEC AM is a so-called non-(wet) shrinking joint-anchor filler based on Portland cement which can be used, for horizontal and vertical (overhead) applications because of its rigidly mouldable consistence. BETEC AM has a thixotrope consistence which renders the application of forms unnecessary.

TypeGrain structure 
AM/ K700-0.5 
   
Quality control

During manufacturing only high-quality aggregates are used, which meet the strictest requirements. During the production process as well as during the final stages these materials are extensively tested for quality, not only in our own laboratory, but also in independent acknowledged institutes.

Application areas Advantages
  • BETEC AM is used as joint filler for recesses between prefab concrete parts and can be applied manually as well as mechanically.
  • Injecting mortar for concrete -, and tie – anchors and anchors for stone and bricks, specifically for horizontal and vertical overhead applications.
  • Product ready for use, which is easy to process and environment-friendly
  • Chromate reduced
  • Checked volume increase
  • No plastic shrinkage
  • Very high early and final strengths, therefore loading is possible soon after application
  • Resistant to frost and gritting materials, like salt
  • Free of chlorides and other corrosive aggregates
  • Contains no aluminous cement
  • Complies with the requirements drawn up for prestressed concrete
  • Very good adhesion to concrete and steel
  • Highly resistant to oil and grease
  • Can be pumped, vibrated or poured without any danger of de-mixing
Packaging and storage
25 kg bags. Dry and frostproof, storage life 12 months in the ori
Precautions
Refer to safety sheets.
Article CodeAM / K70
Kind of mortarJoint filler (trowel mortar)
Type of mortar [mm]0.5
Joint width [mm]35 (maximum)
Class of strengthK70
Environmental degreexo t/m xa3
Volume increase [%]>0.1 and < 0.2
Desiccation shrinkage after 7 days [mm/m]0.62
(measurement of shrinkage on experimental patches that received no curing) 
Water segregation (bleeding)none
Min. processing temperature ** [°C]5
Max. processing temperature [°C]35
Rel. humidity foundation soilmoderately damp
Bond strength to concrete [N/mm²]>2
Water dosagerefer to front of package
Calculation of amount of dry mortar [kg/m³]1860
Density of mixed mortar (kg/dm³)2.15
Compressive strength [N/mm²](20°C) 
 • 1 day42.0
 • 3 days58.0
 • 7 days73.0
 • 28 days76.0
 • 90 days81.0
Flexural-tensile strength [N/mm²] (20°C) 
 • 1 day6.0
 • 7 days7.5
 • 28 days8.2
 • 90 days9.3

Complies with CUR recommendation 24 ** At temperatures below 5ºC measures for winter conditions must be taken (material applicable till - 5ºC)

Processing advice

General Processing Advice Trowel and wet guniting grouts (cement-bound) [B]

Preliminary treatment of the ground
Before applying BETEC repair mortar, the mineral ground should be freed of cement skin, dirt, grease, oil, dust, curing compound, paint residues, loose parts and other contaminants.
The ground should be roughened to such a degree that good adhesion is obtained.
Roughening and removing the cement skin from the mineral ground can be carried out by means of mechanical actions such as spraying water under high pressure, grit blasting, dabbing, grinding or hacking (pneumatically, electrically, manually).
The mineral ground should be frost-free!

Pre-moistening of the ground
Highly absorbing grounds must be moistened with clean tap water until no more water is absorbed in ample time before the repair material is applied. When applying the reparation mortar the ground should not be water-repellent (glistening wet); this will reduce adhesion. If the ground still shows too much water absorption, the adhesive surface will burn because of the low water-cement ratio.
There are various options for additional adhesive layers, dependent on the surface and field of application; refer to our technical staff concerning this.

Mixing
BETEC repair mortars can be mixed in a free-fall concrete mixer, forced mixer, Deys 200 groutautomatic or in case of smaller amounts with a plaster mixer for electric drilling machines.
For the correct water dosage we refer to the front of the packaging; the minimum and maximum water dosage are mentioned there. The water dosage should not be below the minimum need for water, the maximum dosage must not be exceeded.
Fill the mixer with 2/3 of the water dosage indicated, then add the BETEC repair mortar.First mix thoroughly, so that a mixture free of lumps is produced. Then gradually add the remaining 1/3 of the mixing water until the correct consistence is realised; do not add any more water than strictly necessary.

  • Do not add water afterwards
  • Always use clean tap water, or suited mixing fluids delivered by us
  • The total mixing time amounts to a minimum of 3 minutes (approximately 3-5 minutes)
  • The processing time amounts to approximately 50-70 minutes (high-early-strength mortars approximately 10 minutes) (20ºC)

Note: in order to obtain a polymer modified repair mortar (PCC), polymer dispersion BETEC 410 should be added to the mixing water; the ratio depends on the application: 5 to 3 parts water for 1 part BETEC 410. It is also possible to use PCC mortars which are ready for use - refer to our technical staff concerning this.

Processing
Dependent on the type of mortar, BETEC repair mortars can be applied manually or mechanically (wet-guniting system).
In manual applications, often an adhesive layer BETEC 031 or from BETEC 410 mixed 1:4 parts with tapped water should be applied; this layer must be brushed with force into the ground with a broom or a steel brush. The repair mortar should be applied within the processing time of the adhesive layer (WET-IN-WET). Dry adhesive layers must be removed.Another option is the application of an adhesive layer of the same material.

  • Minimum processing temperature of BETEC repair mortars is 5ºC; for the application in temperatures of +5ºC to -5ºC you should consult our technical staff concerning measures that should be taken in winter.

Curing
Because BETEC repair mortars are cement-bound, it is of the greatest importance that the mortar is cured. Because of the low water-cement ratio the mortar must be cured for 5 days at the minimum in order to prevent premature desiccation and ensuing shrinkage. This can be done by wetting with clean tap water. Another option is to cover the mortar with moist burlap covered with synthetic foil. Less time-consuming is the use of BETEC BETOFILM curing compound which must be applied in two layers.

Packaging and storage
BETEC mortars are delivered in packages of 20/25 kg; packaging consists of several layers of paper, with layers of perforated synthetic material in between. The packaging material is not water-tight and must be stored in a dry and frost-free place. In the original closed packaging the storage life of the mortar is 12 months.

Health & Safety
BETEC® are products based on cement and can therefore cause burns to skin and eyes, which should be protected during use. Wear gloves and protective eye shields. Wearing a dust mask is advised. Treat splashes to eyes and skin immediately with clean drinking water. Consult a doctor when irritation continues. If accidentally ingested, drink water and consult a doctor. Users must comply with all risk and safety phrases. Safety data sheets can be obtained from Deys Betontechniek or from our website. GISCODE ZP1.

Liability

The technical instructions and recommendations we provide on the basis of our experience and to the best of our knowledge, are entirely without obligation and merely provide an indication. Not all facts, problems and queries that occur during practical application can be included in a general documentation sheet. Our recommendations and instructions do not commit us to any legal obligations as a result of the purchase and application of our products. Any deviating agreements made by our employees that are not included in our datasheets will only be lawful providing they have been confirmed in writing by the management. Our raw materials, semi-finished products and products comply with the most stringent quality standards. This does not relieve the user of their responsibility to test our products prior to their application. Our general trading and delivery conditions, which we are happy to forward to you on demand, are and remain applicable at all times.
This specification sheet supersedes any previous versions.