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tuffbed 2-Pack, Type B/Type 35, Free Draining, Low Carbon Bedding Mortar

tuffbed 2-Pack, Type B/Type 35, Free Draining, Low Carbon Bedding Mortar

Steintec

High performance bedding mortar to BS 7533-7: 2010 Type A and Type B and BS 7533-101:2021 Type 25 and Type 35, free draining with a low-carbon manufacturing profile.

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Application

Laying course (bedding) for bound construction (rigid) pavements.

Description

A high performance bedding mortar, formulated for use as the laying course (bedding) for bound construction (rigid) pavements constructed in natural stone or concrete paving units subject to pedestrian through to heavy categories of trafficking.


Features and benefits:

  • Performance exceeds BS 7533 Type A and Type B and BS 7533-101:2021 Type 25 and Type 35 bedding mortar requirements and in particular the requirement to be permeable and frost resistant when cured.
  • The permeability of the bedding mortar helps to prevent moisture related issues, including frost damage, structural failure, efflorescence, picture framing and organic staining.
  • tuffbed 2-pack has a capillarity maximum rise of 20 mm in accordance with BS 7533-101:2021. 5.4.1 when tested to Annex C.
  • Low carbon footprint: This two-part product requires no pre-drying or pre-blending of the aggregate component, and because the binder is supplied separately, the need for energy intensive central processing is avoided. This reduces overall energy use and haulage. Mixing is carried out on site which also makes it economical and suitable to commercial and public realm projects.
  • Bedding depths of between 25–70 mm can be placed in a single layer. Greater depths are achieved by placing successive layers. Consult manufacturer for details.

General information

Color

Grey

Material

Cementitious hydraulically bonding mortar containing crushed igneous rock.

Size

Bedding depth - 25—70 mm.

WarrantyDescription

tuffbau Ltd warrants that the bagged product components will meet the specified performance criteria at production.

Uniclass 2015

Pr_20_31_53_61 Paving laying course mortarsPrimary

CAWS

M10/120 Fine concrete levelling screeds

M10/130 Proprietary quick drying levelling screeds

M10/180 Concrete wearing screeds (granolithic)

M10/195 Proprietary screeds to BS EN 13813

M10/7 Proprietary quick drying levelling screeds

Q24/10 Conventional concrete block paving

Q24/112 Conventional concrete block paving with bound base

Q24/122 Conventional clay paver paving with bound base

Q24/130 Natural stone sett paving

Q24/132 Natural stone sett paving with bound base

Q24/133 Natural stone sett paving overlay

Q24/30 Mortar bedded

Q24/385 Mortar bedded

Q25/110 Natural stone slab paving system

Q25/115 Natural stone slab paving overlay system

Q25/120 Concrete flag paving system

Q25/125 Concrete flag paving overlay system

Q25/130 Rigid brick paving system

Q25/135 Rigid brick paving overlay system

Q25/140 Natural stone sett paving system

Q25/145 Natural stone sett overlay paving system

Q25/150 Concrete sett paving system

Q25/155 Concrete sett paving overlay system

Q25/160 Natural stone cobble paving system

Q25/165 Natural stone cobble overlay paving system

Q25/26 Natural stone slab paving system

Q25/31 Concrete flag paving system

Specification data - Paving laying course mortars Enhanced data

Standard

To BS7533:101-2021, BS 7533-4:2006, BS 7533-7:2010, BS 7533-10: 2010, BS 7533-12:2006, EN 13813:2002.

Mortar designation

To BS 7533-101:2021, Type 25 and Type 35 compliant.

  • Classification - BS 7533-7: 2010 C.2.1 and table C4 Type B compliant.
  • Classification - BS 7533-7: 2010 C.2.1 and table C4 Type A and Type B compliant.

Characteristics

Two part product, binder and aggregate.

Moisture content

Wet mix, 150 mm slump.

Product Reference

tuffbed 2-Pack Type B, Free Draining, Low Carbon Bedding Mortar

Working temperature

2—30°C.

Typical compressive strength

14 days at 20°C: ~25 N/mm²; 28 days at 20°C: ~35 N/mm².

Adhesion strength

~1 N/mm² (without tuffbond): ~2 N/mm² (with tuffbond).

Flexural strength

7 N/mm².

F4 (4.5–7.0 N/mm²).

Modulus of elasticity

14 000—18 000 N/mm² .

Application-dependent.

Permeability (to EN 12697-19)

8.5 x 10^-4 m/s.

CompressiveStrength

C35.

Reaction to fire

A1-fl.

Adhesive strength designation

2 N/mm² with tuffbond brush applied to underside of paving elements.

2 N/mm² with tuffbond brush applied to underside of paving elements and to surface of concrete base or structural slab.

Permeability designation

Horizontal permeability = 8.5 x 10^-4 m/s (to EN 12697-19).

Required where base is impermeable concrete or bituminous base.

Vertical permeability = 18.8 x 10^-4 m/s (to EN 12697-19).

Required where the base is permeable.

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