Abstract
Modern global trends show the preferred low-rise construction, even in large cities. Lightweight concrete is the most common material for low-rise construction. Existing lightweight concrete with the wood residues addition have several disadvantages due to the properties of the aggregate. In the southern regions of Russia, walnut grows in large quantities. Only a small part of the shell is processed, the rest is buried in the ground or burned. The proposed aggregate from crushed walnut shell has several advantages compared to the traditional natural organic fillers: low water demand and decay, high strength. The nutshell in the composition has sugars, which are the cement poisons, there are no data in the literature on the crushed shell technical characteristics. Thus, it is required to determine the crushed shell technical characteristics, to choose a processing method reducing the water-soluble sugars amount in the shell, to select the lightweight concrete composition, ensuring its optimal characteristics. The new kind of lightweight concrete will have characteristics different from existing analogues.
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