Rate of Spread HRA and PCC

Low Rate of Spread

High Rate of Spread



Low Texture Depth



High Texture Depth

Above are two different different types of rate of spread of pre-coated chippings achieved and the resulting variation in Macro texture depth.The texture depth achieved from different rates of spread can be afected by several elements of the laying process.Temperature of the HRA,if too hot PCC can disapear into the mat resulting in low texture depth,too cold and the PCC will not be sufficiently embedded into the mat which may result in chip loss.Depth of material may also affect the rate of spread,too thin PCC will not be sufficiently embedded which may result in chip loss,to thick and PCC will disapear into HRA resulting in Low texture depth.The Roller drivers should also be aware of the diference in temperatures and the difference in thicknesses as they will have to either stay back or get on the mat quicker.

CBR Plate Bearing Test

DGL Testing carry out CBR Testing in accordance with standard guidlines.For further information contact us at DGL Testing Services Ltd.

Concrete Testing

Contact us should you require concrete surveys carried out on existing structures.

Coring and Visual Descriptions

DGL Testing Services Ltd are a UKAS Accredited Company who can carry out Coring and Visual descriptions to accertain thicknes of road surface and condition.We supply a full report with photographic evidence of our findings.

DGL Testing Services Ltd
have been trading since February 2006 and has obtained UKAS accreditation for its services.http://www.ukas.org/testing/lab_detail.asp?lab_id=2467&location_id=&vMenuOption=3
Our fully trained experienced staff include :-
Mr David Lloyd – Managing Director 20+ years experience
7 x Site technicians
1 x Laboratory technician (situated permanently at Sittingbourne Laboratory)
Clients Our clients include borough and city councils, county borough authorities as well as private companies.
Completed Contracts:Various contracts have been completed, ranging from one day to several weeks in length and 　carried out for various clients including Eurovia Ltd, Bardon Contracting and Tarmac Contracting Ltd .