INEOS Ethylene Concrete Buffer Tank

Ineos is building a 1 million tons ethylene concrete buffer tank in Belgium. The total concrete volume is 3,461 m³. To show the benefits from using Sika’s ViscoCrete® superplasticizer technology in this specific project, a Life Cycle Assessment (LCA) of two concrete systems with the same performance (W/C ratio of 0.46) was made.

Efficient Solution for all Life Cycle Stages

The INEOS concrete system contains a Sika® ViscoCrete®. superplasticizer in its recipe, while the alternative concrete system was designed to provide the same performance with a traditional superplasticizer. The LCA is from cradle-to-gate, which includes all life cycle stages from raw material extraction and logistics to manufacturing and packaging.

Results and Conclusion

To assess the gains from using the Sika® ViscoCrete® superplasticizer in terms of water and cement reduction, the Input Water, Cumulative Energy Demand (CED) and Global Warming Potential (GWP) for both concrete systems are shown below.

The Input Water shows the consumption of water for the concrete production. The GWP measures the potential contribution to Climate Change, focusing on emissions of greenhouse gases (for example CO₂, CH₄). CED is the total amount of primary energy from renewable and non-renewable resources.

yes
Input of Water

The net gain of water is 66 m³ (66,000 liters) in comparison to the concrete system with traditional superplasticizer.

 

yes
Global Warming Potential (GWP)

In terms of GWP, it 'costs' 7 tons CO₂ to produce the superplasticizer for the 3,461 m³ of concrete. The overall net gain is 50 tons CO₂ in comparison to the concrete system with traditional superplasticizer (costs vs. savings factor of 1:7).

 

 

Cumulative Energy Demand (CED): saving 9000 litres of oil with Sika solution (Costs vs. Savings factor of 1 to 2).
yes
Cumulative Energy Demand (CED)

In terms of CED, it 'costs' 200 GJ to produce the superplasticizer for the 3461 m3 of concrete. The overall net gain is 370 GJ in comparison to the concrete system with traditional superplasticizer, which is equivalent to saving 9000 litres of oil (costs vs. savings factor of 1:2).