Abstract Two vegetal aggregate types are studied for their performance regarding immersion and outdoor weathering. The most widely researched bio-aggregate to date is hemp shiv; which is used in this study as well as chopped rapeseed straw which is an alternative bio-aggregate widely available in the UK. In this study the binder used is Vicat prompt natural cement as well as a viscosity modifying agent (VMA) admixture. It was found that the hemp aggregate produced the most durable concrete when compared to rapeseed, and the addition of a VMA resulted in a much more durable material for both aggregate types. Organic and inorganic leaching was also investigated, and it was found that the binder and soluble organics were leaching from all of the concrete types.

中文翻译：

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长期风化对麻油菜籽混凝土的影响

摘要 研究了两种植物集料类型在浸泡和户外风化方面的性能。迄今为止研究最广泛的生物聚集体是大麻 shiv；本研究中使用的还有切碎的油菜籽秸秆，这是一种在英国广泛使用的替代生物聚集体。在这项研究中，使用的粘合剂是维卡瞬变天然水泥以及粘度调节剂 (VMA) 外加剂。发现与油菜籽相比，大麻骨料生产的混凝土最耐用，添加 VMA 导致两种骨料类型的材料都更耐用。还研究了有机和无机浸出，发现粘合剂和可溶性有机物从所有混凝土类型中浸出。