What strength is Blue Circle cement?

Blue Circle High Strength (40N) Ready to Use Concrete 20kg | Travis Perkins.

What is Blue Circle cement used for?

Blue Circle General Purpose Cement offers consistent, quality results for a wide range of standard building applications including concrete, mortar, rendering and screeds. Suitable for use on all projects from small DIY jobs to major construction.

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.

How long does it take for Blue Circle cement to set?

Allow 5-10 minutes for the initial set. You will be able to hang a fence panel in as little as 10 minutes!

What are different strengths cement?

There are three main strength classes for cement: 35,5, 42,5 and 52,5. The strength class of most cements is measured in a standard test at ages two or seven days, and at 28 days. You'll also find the letters N or R on cement bags.

Hand Mixed Concrete - 2 Min tips

What is standard concrete strength?

Studies indicate that traditional concrete's tensile strength varies between 300 and 700 psi, i.e., around 2 to 5 MPa. This means, on average, the tension averages about 10% of the compressive strength.

What does the 42.5 N on cement mean?

where N refers to Ordinary Early Strength and R refers to High Early Strength. In addition 42.5 and 52.5 refers to minimum 28-Day Strength.

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 cement waterproof?

Mastercrete has improved resistance to the cracks caused by freeze/thaw attack when compared to traditional cement. It produces a superior smoother and more consistent mix. And its weatherproof packaging means it's no problem to leave them outside in the rain.

Is rapid set concrete strong?

Rapid Set concrete offers several characteristics that provide superior performance. It's a durable, fast-curing, and strong product that sets in as little as 15 minutes. It can also be retarded for as long as 45 minutes, if the project needs more working time.

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.

Has Blue Circle cement got lime in it?

Blue Circle mortar is a ready-to-use M4 (or designation iii) 1:1:6 Cement:Hydrated Lime:Sand mortar.

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 do you use general purpose cement for?

General Purpose Cement is a cost effective, high quality building material. The level of consistency and versatility of General Purpose cement makes it an ideal choice in virtually all construction applications.

What is the difference between Portland cement and Mastercrete?

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.

What area will 20kg concrete cover?

one 20kg bag will cover an area of 1.1m2 to a depth of approximately 10mm. or 108 x 20kg bags equates to one cubic metre of mixed concrete. Concrete Mix comes 20kg plastic lined, multi-walled paper sacks, and small handy 10kg plastic bags.

What color is blue circle mortar?

Mix is stated to be approx 6:1, which is normally just right to match the existing mortar colour, but the resulting finish was a cement grey, and not the sandy coloured mortar I was expecting.

What happens if brick mortar is too dry?

Mortar that is too wet will run out between the joints. If it is too dry, the bond will be weak. Mound the mix and form a depression in the center.

What is the difference between 32.5 N and 42.5 N cement?

Based on result of test PLC grade 42.5R is an improvement over grade 32.5 and its usage in rigid pavement construction work is recommended as it ensures higher strength and economy in concrete work.

What is the difference between 42.5 and 52.5 cement?

32.5) meets the structural requirements of small-scale consumers, while grade 43 (42.5) may be utilised for pre-cast concrete just as grade 53 (52.5) may be used by builders of heavy infrastructure such as bridges, fly-overs, large span structures and high rise structures.

What does 32.5 mean in cement?

This means that for grade 32.5 the maximum strength that it can achieve after 28 days is 32.5N/mm2, 42.5 is 42.5N/mm2, and 52.5 is 42.5N/mm2. Therefore, suppose you want to cast concrete with a strength of 25N/mm2, your cement of choice should be 32.5.