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The Pavilion MANAL: A Living Laboratory for Sustainable Construction

Implementation Date

March 6, 2024

By

Pavilion MANAL

City

Horw

story image

Description

The Pavilion MANAL in Horw, Switzerland, is more than an exhibition space, it is a proof of concept and an experimental prototype that unites sustainability with circularity. Built almost entirely from reused construction waste and excavation material, it challenges conventional practices in the construction industry.
At its core, the structure features the world’s first application of 35 m³ of Oxacrete Oulesse® concrete, a cement-free, low-CO₂ material produced from demolition waste. Complementing this are 10 m³ of stabilised poured-earth Oxacrete® Nossim and Oxabloc compressed-earth blocks, created with 15 m³ of Oxabrick® Loko, which together form the pavilion’s arches and walls. Reclaimed tunnel slabs define the layout and serve as flooring, while a wooden ring beam and steel cables enhance stability, distribute loads efficiently, and reduce overall material use.

Impact & Result

Cement-free concrete. Up to 60% CO2 reduction compared to convential cement used in concrete. Enables reuse of demolition waste, creating additional value from resources that would otherwise be discarded

Solution Spotlight

Oxara's vision is to enable sustainable construction and affordable housing. To do so, we provide an alternative to the emission intensive cement by transforming locally available mineral construction waste into a low carbon, cement-free, and circular binder – Oxacrete Oulesse®. The binder is price competitive price to cement when produced at scale. The building industry accounts for 38% of global CO2 emissions, with cement and concrete contributing 8%. In Switzerland, cement represents 5% of CO2 emissions. Additionally, 2.2 billion tons of construction waste are landfilled in western countries, including 45 million tons in Switzerland. Decarbonizing the construction industry and reducing primary material consumption are crucial to achieve the climate goals and Net Zero targets. An immediate solution is then needed. At Oxara, we develop, produce and sell to industrial building material producers an low CO2 and circular binder to replace cement.

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