Trowel Ready Mortar
Trowel Ready Mortar is a pre-mixed mortar specially formulated for concrete block and brick laying. It is produced in modern weigh batching plants and delivered to site in quantities to suit the customer's requirements. It holds its required properties of cohesiveness and workability for its designated retardation period in delivery tubs, but starts to set as it loses water into the block or brick being laid.
As normally supplied it is intended to remain usable in tubs for about 36 hours, but can be supplied with longer or shorter periods of retardation if required.
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COMMERCIAL ADVANTAGES
- is supplied ready for use and remains workable for 36 hours.
- is delivered to site according to a pre-arranged programme.
- is discharged into tubs of 0.33 m3 capacity which serve as measuring, storage and transit containers.
- is immediately ready for use without further treatment on site.
- improves bricklaying productivity for the building contractor.
- offers the contractor economic advantages over site mixed mortar, i.e. no setting up costs, no breakdown costs and no wastage.
- one delivery per day - one servicing operation for the bricklayers and leave them to get on with it!
OVERALL MORE BLOCKWORK IS PRODUCED IN A MUCH SHORTER TIME
TECHNICAL ADVANTAGES
- is weigh batched and manufactured under computerised control, thus ensuring consistency and long term durability.
- the quality of the ingredients complies with British Standards.
- streamlines and improves building progress.
- is regularly subjected to quality control testing.
- full technical and commercial back-up available.
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Guidelines for Use
- Readyuse Mortar is intended to be used directly from the tubs.
- If the Mortar should stiffen due to water evaporation within the designated retardation period, it may be re-tempered.
- No admixtures or other materials should be added to Ready Use Mortar.
- Top up of tubs should not be allowed. Tubs should always be clean and empty before refilling.
- Tubs which are to be filled should be set out in an accessible position to enable the driver to unload without hindrance. This will help him to keep to his schedule of deliveries.
- A block layer would use 0.5 m3 - 1.0 m3 per day depending on the nature of the work.
- On average 1.0 m3 would build:
900 4" Blocks on edge
450 4" Blocks on flat
1,800 Bricks
- When ordering coloured mortar please give enough notice for us to provide sample bags with which trial panels can be built. This gives a more accurate indication of the final colour than a colour photograph and is a better base for consensus between supplier, contractor and specifier.
- Readyuse Plaster spreads at approximately 80 m2 for one cubic metre of undercoat. On average a plasterer will use 1 m3 per day.
- Caution should be exercised when using Readyuse Mortar with building components of very low absorption. These would include stone, engineering quality bricks, saturated bricks and blocks, etc.
It is essential that consideration is given to ordering Mortar with a shorter working life than the standard 36 hours and to ensuring all masonry is safely propped and supported in the manner and for the duration specified in the relevant safety standard. Further information can be obtained from the Technical Department at (028) 9062 2211.
- Lime Bloom is a potential blemish inherent in all types of Mortar. It is caused by the appearance of calcium carbonate salts on the surface of the mortar joint and normally washes off with rain. It is a temporary and superficial condition which does not affect the durability of the mortar joint.
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Composition / Materials
Readyuse Mortar consists of selected sands, cement, water and admixtures. The materials used comply with the following standards:
| Cement |
BS12 |
Portland Cement |
| Sand |
BS1200 |
Specification for Building Sands |
| Water |
BS3148 |
Method of tests for Water for making Concrete |
| Admixture |
BS4887 |
Mortar Admixtures |
| Pigments |
BS1014 |
Pigments for Portland Cement Products |
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Specification
The Mortar is produced to meet the requirements set out in BS4721 and is guaranteed to meet the strength requirements below.
| Mortar Designation |
Cement: Sand with Plasticiser |
Compressive Strength at 28 days |
| I |
1 : 3 |
11.0 N/mm3 |
| II |
1 : 3 to 4 |
4.5 N/mm3 |
| III |
1 : 5 to 6 |
2.5 N/mm3 |
| IV |
1 : 7 to 8 |
1.0 N/mm3 |
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