Deys Betontechniek B.V.

Giet- en ondersabelingsmortels,Betonreparatie producten, Injectieproducten, Kunststoffen, Mortelpompen, Voegovergang constructies

Deys Targets
  • Chemical-and petrochemical plants

  • Delta works

  • Sea Lock IJmuiden

  • Harbours

  • Industry

  • Offshore

  • Powerplants

  • Department of public works

  • Railways

  • Utility

  • Airports

  • Water treatment

  • Road and water construction

  • windmills


BETEC 343 / 343 SF


BETEC 343/343SF are non- (wet) shrinking repair mortars of the RAPID type based on Portland cement with microsilica which are applied for constructive repairs. For applications that are to undergo temperature stress within very short notice (for example asphalting), these products can also be delivered with stainless-steel fibres industrially mixed in.

Type Grain structure (mm) Particulars
343 0-4  
343 SF 0-4 stainless-steel fibres industrially mixed in with repair mortar
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
  • Repairs to prefab concrete constructions
  • Cover repairs to bridges, fly-overs, tunnels etc.
  • All the usual repairs where strength has to be developed very fast
  • Products ready for use, which are easy to process and environment-friendly
  • Chromate reduced
  • Checked volume increase
  • No plastic shrinkage
  • Very high early strengths, so loading is possible soon after application
  • Resistant to frost and gritting materials, like salt
  • Free of chlorides and other corrosive aggregates
  • Contain no aluminous cement
  • Comply 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
  • By adding microsilica a highly dense and homogenous mortar matrix is realised
Packaging and storage
25 kg bags. Dry and frostproof, storage life 12 months in the original and closed packaging
Refer to safety sheets.
Article Code 343 343 343 SF 343 SF
Kind of mortar trowel mortar   trowel mortar  
Type of mortar [mm] 4   4  
Thickness of layer [mm] 10-50   10-70  
Class of strength K70   K70  
Environmental degree xo t/m xa3   xo t/m xa3  
Application class RC3   RC3  
Volume increase [%] >0.1 en < 2.0   >0.1 en < 2.0  
Desiccation shrinkage after 90 days [mm/m] < 1.2   < 1.2  
(measurement of shrinkage on experimental patches that received no curing)        
Water penetration < 10   < 10  
Resistance to frost and gritting material (salt) (25 cycles) [mg/mm²] < 0.4   < 0.4  
Carbonatation depth (91 days) [mm] < 2   < 2  
Halogen content [%] (m/m) < 0.05   < 0.05  
Polymer content not applicable   not applicable  
Thermic expansion coefficient [°C] < 15 x 10-6   < 15 x 10-6  
Water segregation (bleeding) none   none  
Min. processing temperature ** [°C] 5   5  
Max. processing temperature [°C] 35   35  
Rel. humidity foundation soil moderately damp   moderately damp  
Bond strength to concrete [N/mm²] > 2   > 2  
Water dosage refer to front of package
Calculation of amount of dry mortar [kg/m³] 2100   2200  
Density of mixed mortar (kg/dm³) 2.30   2.40  
Compressive strength [N/mm²] 20°C 10°C 20°C 10°C
 • 2 hours 36.0 29.0 36.0 29.0
 • 4 hours 44.3 35.0 45.0 35.0
 • 8 hours 47.0   52.0  
 • 1 day 57.0   61.0  
 • 7 days 73.0   77.0  
 • 28 days 88.0   92.0  
Flexural-tensile strength [N/mm²] (20°C) 20°C 10°C 20°C 10°C
 • 2 hours 4.0   10.0  
 • 4 hours 5.0   12.0  
 • 8 hours 6.0   13.0  
 • 1 day 8.0   14.0  
 • 7 days 9.0   16.0  
 • 28 days 10.0   17.0  
Complies with CUR recommendation 54 x**At temperatures below 5ºC measures for winter conditions must be taken (material applicable till - 5ºC)
Please contact us, we will send you the information.


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.