Does Blue Circle cement contain lime?

Blue Circle mortar is a ready-to-use M4 (or designation iii) 1:1:6 Cement:Hydrated Lime:Sand mortar. This product is specifically created for general brick and block work and is also ideal for repointing. The lime and plasticiser additives make it highly workable and cohesive, giving you the best results every time.

What cement contains lime?

Lime mortar today is primarily used in the conservation of buildings originally built using lime mortar, but may be used as an alternative to ordinary portland cement. It is made principally of lime (hydraulic, or non hydraulic), water and an aggregate such as sand.

Does all cement have lime?

Lime has been used as a binder in mortars for over 2000 years. Today, lime is still used as the primary binder in many mixes, usually in the form of lime putty or Hydraulic lime. Hydrated lime is used in modern cement based mortars mainly for its properties as a plasticiser.

Is Blue Circle Cement Portland cement?

Blue Circle Industries was a British public company manufacturing cement. It was founded in 1900 as the Associated Portland Cement Manufacturers Ltd through the fusion of 24 cement works, mostly around on the Thames and Medway estuaries, together having around a 70% market share of the British cement market.

What is Blue Circle mortar?

Blue Circle Quality Assured Mortar comprises of cement, specially graded sand, lime and admixtures. It is quality assured for a consistent finish. Just add water. Premixed mortar, simply add water. The Mortar is quality assured for a consistent finish, and comes in a unique waste saving waterproof pack.

Hand Mixed Concrete - 2 Min tips

Is Blue Circle mortar waterproof?

Blue Circle Quality Assured Mortar is available in waterproof and tear-resistant 20 kg plastic packaging.

Do you add water to Blue Circle cement?

Bring the dry material to the water and keep mixing, adding water as necessary until uniform in consistency and colour. For both machine and hand mixing, use only sufficient water in the mix to ensure workability and allow thorough compaction.

Is Blue Circle owned by Tarmac?

Iconic contruction brands Tarmac and Blue Circle have been combined to create a UK leader in the building materials sector. Irish-based group CRH has completed its acquisition of the business formerly known as Lafarge Tarmac, of which the two brands were both part, from previous joint owners Lafarge and Anglo American.

What strength is Blue Circle cement?

Blue Circle High Strength Concrete (40N) is a premixed strong and hardwearing concrete manufactured from cement, specially selected and graded sand, and 10 mm coarse aggregate. When used correctly it will typically achieve a 28-day compressive strength of 40 N/mm2.

How can I tell if I have lime mortar?

The first thing to look for is the color of the mortar – is it closer to a shade of gray or a shade of white? A whiter mortar typically indicates a lime mortar. If mortar is grayer in color, it is likely Portland cement modern mortar.

How do I know if I have lime plaster?

Lime plaster is usually an off-white colour (as opposed to pinkish as with gypsum-based mixes.) When trying to identify your plaster type, check for the presence of sand and hair — both tend to be good indicators of lime plaster, as is the finish being soft to the touch and obviously old.

How can I tell if my render is lime or cement?

Although a range of finishes exists with each, the latter has a more uniform appearance, and corners and details are sharper and more defined. Weathering characteristics also differ. Cement renders often fail in patches and detach from the wall, whereas lime renders erode back gradually in a more even manner.

What is the difference between cement and lime?

Lime hardens much more slowly than cement-containing mortars, making it much more workable. Lime is also less brittle and less prone to cracking, and any cracked areas can absorb carbon dioxide and mend over time. Cement hardens very quickly, but may be too strong for some applications, e.g., working with old bricks.

What color is lime mortar?

Lime mortar made with local sands to produce pale yellow or off-white coloured mortars using Morstead, Wareham or Extra Fine White sand. A wet product supplied in tubs. Lime putty mortar is slower to set than NHL mortar.

Why is cement called Portland?

The inventor Joseph Aspdin, of England, patented the basic process in 1824, naming it for the resemblance of the cement when set to portland stone, a limestone from the Isle of Portland.

How long does Blue Circle cement take to dry?

Blue Circle Multi Purpose Concrete is a superior, ready to use concrete in a unique waste saving waterproof pack. The concrete simply mixes with clean water, and sets in 30 minutes.

Where is Rugby cement made?

Rugby Cement was the common name for a company based principally in Rugby, Warwickshire, which produced portland cement.

Do you add sand to Blue Circle cement?

Each bag contains the exact quantity for a standard 4 to 1 mix. Just add 2 bags of sand and you'll save time and money because there's no more wasteful leftover cement.

What is the difference between Mastercrete and general purpose cement?

Mastercrete cement

An enhanced Portland-limestone cement, for general purpose work, with improved resistance to freeze/ thaw attack. This cement has a lower water demand than ordinary Portland cement and offers a more cohesive mix. Mastercrete is suitable for use in concretes, mortars, renders and screeds.

What is Snowcrete used for?

Snowcrete is a bright white Portland Cement ideal for architectural uses, providing attractive, eye-catching and durable concrete, rendering and mortar. With the addition of different coloured aggregates or pigments a wide variety of colours and finishes can be achieved.

How do you use blue circle hydrated lime?

The maximum benefit of Blue Circle Hydralime can be obtained by its use in a lime putty. This is produced by adding an excess of Blue Circle Hydralime to water in a clean container with constant stirring to form a paste, which is allowed to condition by standing for 24 hours before use.

What is Blue Circle slab layer?

Slablayer is a cement based bedding material containing specially selected sand and cement for use under patio paving slabs to provide a sound and level bed. Read more.