Concrete technical information
Hanson Concrete technical department
Hanson Concrete operates regional technical teams across the North, Central and South of the UK. Our experienced, mobile quality control Technicians visit sites to obtain test samples for our rigorous internal quality control system and are always on hand to offer professional advice.
Fresh concrete must be protected whilst in its early life from the detrimental effects of hot sun, dry air, drying winds and frost. In order to achieve the required durability and strength of any concrete, care must be given to curing.
Cold weather placement
The European standard for concrete EN 206, and its complimentary British Standard BS 8500, requires that concrete must be supplied at a minimum temperature of 5°C at the point of discharge and this temperature must be maintained on site using insulation.
Mass concrete, usually thicker than 0.5m, may require some form of thermal management to prevent thermal cracking (thermal shock).
The basic constituents of concrete are cement, water and aggregate. Other constituents such as admixtures, pigments, fibres, polymers and reinforcement, can be incorporated to modify the properties of the plastic or hardened concrete.
Adding more water
We often get customers who insist we add more water to the concrete on site, so before we do we advise them on it and if they insist we get them to sign for more water.
What is concrete?
Concrete is an engineering material that simulates the properties of rock and is a combination of particles closely bound together. It is simply a blend of aggregates, normally natural sand and gravel or crushed rock. These are bound together by a hydraulic binder e.g. Portland Cement and activated by water to form a dense semi homogenous mass.
Special concretes & value-added engineering
Hanson Concrete has a proven history in the field of special concretes and industry award winning bespoke mix formulations to meet challenging engineering requirements that can often save valuable time and help deliver demanding deadline.
Concrete is a mixture of materials, the variability of which can influence the colour of the finished concrete. However, if the same sources of materials are maintained throughout a contract, these inherent variations should not alter the final colour significantly.
Question range from access for delivery to any risks posed with the equipment used to supply ready-mixed concrete on site. Common Farm Range and Home Range Concrete questions are also covered in this FAQ page.
Has your concrete cracked?
Chances are if you are reading this then you are one of many concrete users or purchasers who unfortunately has experienced cracking.
A fully loaded 6m3 truck will weigh approximately 26 tonnes and a fully loaded 8m3 truck will weigh approximately 33 tonnes depending on the type of concrete.
What is Regen?
Regen is Ground Granulated Blast furnace Slag, commonly known as ‘GGBS’. It is a cement substitute, manufactured from a by-product of the iron-making industry.
BS 8500 concrete
Concrete, is the complementary British Standard to BS EN 206 – 1 and was first published in March 2002. It provides substantial national provisions not covered in BS EN 206 – 1.