A Guide to maxit Leca lightweight expanded clay aggregate

1. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING

2. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING What is maxit Leca?

3. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING maxit Leca was developed in Norway in 1958 to provide insulation to roads and railways across Scandinavia. It is a lightweight expanded clay formed by heating & firing natural marine clay in a rotary kiln at temperatures up to 1150 degrees centigrade.

4. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING What are suitable applications for maxit Leca?

5. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Drainage Protecting and insulating service pipework Reducing the loads against retaining walls Stabilising slopes Biofilters Void Filling

6. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Lightening the loads on bridge abutments Minimising earth settlement Lightweight insulating material in any number of Civil Engineering Applications

7. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Why Specify maxit Leca? Low density and high strength combined with easy handling make expanded clay a highly competitive product.

8. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Eliminates costly settlement periods Reduces weight on underground voids Eliminates or reduces expensive load transfer techniques

9. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING A free draining material Installed using the same machinery as conventional fills Also can be installed pneumatically into areas of reduced or awkward access maxit Leca can be compacted in 1m layers, rather than 225mm as with traditional fill materials

10. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Any surplus product is easily reclaimed and re-utilised maxit Leca is not susceptible to oil or diesel spills Has superb insulating properties, protecting against frost It contains no harmful substances or gases & is absolutely neutral & chemically inert.

11. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Application Scenarios Quay Walls Tunnels Insulating Pipelines

12. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING When used against RETAINING WALLS maxit Leca will reduce the weight acting on the rear of the structure by at least 75%, in comparison to traditional fill materials. This weight reduction avoids potential failures & enables savings by increasing spacing between buttress walls & reducing structural dimensions.

13. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING maxit Leca's ability to reduce settlement can offer massive benefits, reducing timescales from years to a few months By installing maxit LWA, subsoil strengthening & lengthy settlement can be reduced or even avoided altogether.

14. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Use of maxit Leca on green areas such as SPORTS FIELDS ensures optimum drainage whilst improving thermal protection thus assisting with the creation of a sympathetic habitat for plant life.

15. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Using maxit Leca (loose or mixed with cement) to fill underground CAVITIES reduces structural forces & eliminates subsidence issues. By pumping high quantities of maxit LWA per day, it is possible to obtain a complete filling of the cavity with high drainage capacity, good resistance and a stiffness similar to that of the original ground.

16. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING SKANSKA UK CIVIL ENGINEERING Unexpected voids were discovered behind the abutments of a Victorian Bridge during a major £8 million project at Harthope Viaduct nr. Moffat, Scotland. By using maxit’s 55m³ blowing vehicle, Skanska were able to deliver maxit Leca from ground level, filling 5 voids up to 10m in depth & up to 1.5m wide in just a single day.

17. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING How Lightweight is maxit Leca?

18. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Typical Comparison Concrete Gravel = 2403kg.cu.m maxit Leca = 280kg.cu.m maxit Leca = 15% of the weight of traditional backfill material

20. You now have the answer to a design issue?

21. You have an application idea?

22. You require a lunchtime CPD?YES?

23. L I G H T W E I G H T F I L LFOR CIVIL ENGINEERING Then Contact Me – Leon Woods maxit Leca UK Ltd Regus House, Herons Way, Chester Business Park Chester, Cheshire CH4 9RQ United Kingdom Tel: 07525 672894 Email: leon.woods@maxitleca.co.uk