Summary
A concrete acoustic masonry block, engineered to provide acoustic absorption.
A concrete acoustic masonry block, engineered to provide acoustic absorption.
A concrete acoustic masonry block, engineered to provide acoustic absorption.
Application
Suitable for use in the construction of external and internal loadbearing and non-loadbearing walls, including the inner and outer leaves of cavity walls, party walls, partition walls and boundary walls. Can also be used as reinforced masonry walls through incorporation of bed joint reinforcement. Other applications include:
- Plant rooms.
- Classrooms.
- Lecture theatres.
- Gymnasiums.
- Swimming pools.
- Arenas.
- Factories.
Suitable for use in the construction of external and internal loadbearing and non-loadbearing walls, including the inner and outer leaves of cavity walls, party walls, partition walls and boundary walls. Can also be used as reinforced masonry walls through incorporation of bed joint reinforcement. Other applications include:
- Plant rooms.
- Classrooms.
- Lecture theatres.
- Gymnasiums.
- Swimming pools.
- Arenas.
- Factories.
Suitable for use in the construction of external and internal loadbearing and non-loadbearing walls, including the inner and outer leaves of cavity walls, party walls, partition walls and boundary walls. Can also be used as reinforced masonry walls through incorporation of bed joint reinforcement. Other applications include:
- Plant rooms.
- Classrooms.
- Lecture theatres.
- Gymnasiums.
- Swimming pools.
- Arenas.
- Factories.
Description
Slotted face acoustic masonry blocks with enhanced acoustic properties, that are achieved through the use of Helmholtz resonating chambers. They have been developed to reduce sound reverberation in both internal and external applications, promoting clarity to speech or music and reducing overall noise levels.
Manufactured from cement, porous aggregates (65% recycled secondary aggregate content), an integral waterproofing and colour pigment.
Features and benefits:
- Cost effective solution to controlling sound reverberation.
- Creates a quieter space.
- Satisfies the requirements of Building Bulletin 93 (BB93).
- Delivers a noise reduction coefficient (NRC) of: EC100: 0.55 αw; EC140: 0.75 αw; EC215: 0.65 αw.
- Reduces reverberation time.
- Designed to deal with difficult to control, low frequency sounds.
- Robust and can withstand frequent impact.
- Available in a variety of colours.
- Can be roller painted – consult manufacturer for details.
- Minimal maintenance required.
- Fire-resistant and will not contribute to the spread of flame.
- Loadbearing capacity.
- Waterproof, and will retain a fresh, clean appearance.
- Efflorescence-free.
- When used to construct the internal leaf of the cavity wall of a building, this product adds to the overall airtightness, improving the thermal efficiency and contributing to the minimization of energy use.
- A 1:1:6 cement:lime:sand mortar is suitable for use with this product.
- CE-marked and manufactured in accordance with BS EN 771-3, BS 5628-1, ISO 9001 and ISO 14001.
- Can be used in conjunction with other Colinwell products, including Acousta Tex.
Slotted face acoustic masonry blocks with enhanced acoustic properties, that are achieved through the use of Helmholtz resonating chambers. They have been developed to reduce sound reverberation in both internal and external applications, promoting clarity to speech or music and reducing overall noise levels.
Manufactured from cement, porous aggregates (65% recycled secondary aggregate content), an integral waterproofing and colour pigment.
Features and benefits:
- Cost effective solution to controlling sound reverberation.
- Creates a quieter space.
- Satisfies the requirements of Building Bulletin 93 (BB93).
- Delivers a noise reduction coefficient (NRC) of: EC100: 0.55 αw; EC140: 0.75 αw; EC215: 0.65 αw.
- Reduces reverberation time.
- Designed to deal with difficult to control, low frequency sounds.
- Robust and can withstand frequent impact.
- Available in a variety of colours.
- Can be roller painted – consult manufacturer for details.
- Minimal maintenance required.
- Fire-resistant and will not contribute to the spread of flame.
- Loadbearing capacity.
- Waterproof, and will retain a fresh, clean appearance.
- Efflorescence-free.
- When used to construct the internal leaf of the cavity wall of a building, this product adds to the overall airtightness, improving the thermal efficiency and contributing to the minimization of energy use.
- A 1:1:6 cement:lime:sand mortar is suitable for use with this product.
- CE-marked and manufactured in accordance with BS EN 771-3, BS 5628-1, ISO 9001 and ISO 14001.
- Can be used in conjunction with other Colinwell products, including Acousta Tex.
Slotted face acoustic masonry blocks with enhanced acoustic properties, that are achieved through the use of Helmholtz resonating chambers. They have been developed to reduce sound reverberation in both internal and external applications, promoting clarity to speech or music and reducing overall noise levels.
Manufactured from cement, porous aggregates (65% recycled secondary aggregate content), an integral waterproofing and colour pigment.
Features and benefits:
- Cost effective solution to controlling sound reverberation.
- Creates a quieter space.
- Satisfies the requirements of Building Bulletin 93 (BB93).
- Delivers a noise reduction coefficient (NRC) of: EC100: 0.55 αw; EC140: 0.75 αw; EC215: 0.65 αw.
- Reduces reverberation time.
- Designed to deal with difficult to control, low frequency sounds.
- Robust and can withstand frequent impact.
- Available in a variety of colours.
- Can be roller painted – consult manufacturer for details.
- Minimal maintenance required.
- Fire-resistant and will not contribute to the spread of flame.
- Loadbearing capacity.
- Waterproof, and will retain a fresh, clean appearance.
- Efflorescence-free.
- When used to construct the internal leaf of the cavity wall of a building, this product adds to the overall airtightness, improving the thermal efficiency and contributing to the minimization of energy use.
- A 1:1:6 cement:lime:sand mortar is suitable for use with this product.
- CE-marked and manufactured in accordance with BS EN 771-3, BS 5628-1, ISO 9001 and ISO 14001.
- Can be used in conjunction with other Colinwell products, including Acousta Tex.
Product certifications
Digital objects
Color
Grey, Red, Cream, Green, Gold, Yellow, White
Grey, Red, Cream, Green, Gold, Yellow, White
Grey, Red, Cream, Green, Gold, Yellow, White
Finish
Smooth
Smooth
Smooth
Material
Concrete
Concrete
Concrete
Shape
Rectangle
Rectangle
Rectangle
Length
440 mm
440 mm
440 mm
Width
100 mm, 140 mm, 215 mm
100 mm, 140 mm, 215 mm
100 mm, 140 mm, 215 mm
Height
215 mm
215 mm
215 mm
Specification
Standard
To BS EN 771-3 and BS 5628-1.
To BS EN 771-3 and BS 5628-1.
To BS EN 771-3 and BS 5628-1.
Block description
Slotted face, porous aggregate, precast acoustic masonry blocks.
Slotted face, porous aggregate, precast acoustic masonry blocks.
Slotted face, porous aggregate, precast acoustic masonry blocks.
Compressive strength
-
-
-
Mean value
15 N/mm².
15 N/mm².
15 N/mm².
Thermal conductivity
1.28 W/m·K.
1.28 W/m·K.
1.28 W/m·K.
Recycled content
65%.
65%.
65%.
Work sizes (length x width x height)
440 x 100 x 215 mm.
440 x 140 x 215 mm.
440 x 215 x 215 mm.
Accessory and special shape types
Not required., Bond-beam blocks., Cavity closers., Cills., Half blocks., Lintels., Quoins., Squints.
Not required., Bond-beam blocks., Cavity closers., Cills., Half blocks., Lintels., Quoins., Squints.
Not required., Bond-beam blocks., Cavity closers., Cills., Half blocks., Lintels., Quoins., Squints.
Tolerance category
D2.
D2.
D2.
Additional properties
Colour
Bracken., Buff., Cream., Green., Honey., Natural., Red., Sandstone., Straw., Whinstone., White.
Bracken., Buff., Cream., Green., Honey., Natural., Red., Sandstone., Straw., Whinstone., White.
Bracken., Buff., Cream., Green., Honey., Natural., Red., Sandstone., Straw., Whinstone., White.
Mortar type
Manufacturer standard., Maroon U53., Beige E74., Cream G89., Green N70., Tan C30., White J88., Orange T36., Yellow D10., Black L62.
Manufacturer standard., Maroon U53., Beige E74., Cream G89., Green N70., Tan C30., White J88., Orange T36., Yellow D10., Black L62.
Manufacturer standard., Maroon U53., Beige E74., Cream G89., Green N70., Tan C30., White J88., Orange T36., Yellow D10., Black L62.
Mortar mix
-
-
-
Joint
-
-
-
Spacing
6–10 m.
6–10 m.
6–10 m.
Material/ Finish
Concrete, smooth.
Concrete, smooth.
Concrete, smooth.
Efflorescence
None.
None.
None.
Average density
2100 kg/m³.
2100 kg/m³.
2100 kg/m³.
Noise reduction coefficient (NRC)
0.55 αw.
0.75 αw.
0.65 αw.
Sound absorption coefficient
-
125 Hz: 0.55, 250 Hz: 0.95, 500 Hz: 0.80, 1000 Hz: 0.65, 2000 Hz: 0.55, 4000 Hz: 0.55.
125 Hz: 0.75, 250 Hz: 0.75, 500 Hz: 0.80, 1000 Hz: 0.60, 2000 Hz: 0.55, 4000 Hz: 0.50.
Shrinkage
<0.04% (drying).
<0.04% (drying).
<0.04% (drying).
Water absorption
<5%.
<5%.
<5%.
MoistureContent
3% (internally).
3% (internally).
3% (internally).
Bond strength
0.15 N/mm² (in shear).
0.15 N/mm² (in shear).
0.15 N/mm² (in shear).
Moisture movement
0.15 mm/m (maximum).
0.15 mm/m (maximum).
0.15 mm/m (maximum).
Weight
-
19.5 kg.
24.5 kg.
Sustainability data
Country of material origin
United Kingdom
United Kingdom
United Kingdom
Country of product manufacture
United Kingdom
United Kingdom
United Kingdom
Recycled content
65 %
65 %
65 %