In volcanic terrains and in particular island regions, the aggregates come from the mechanical crushing of lava rocks and pyroclastic deposits. This study offers an experimental database of the geomechanical characteristics of different volcanic rock lithotypes and the aggregates obtained from these rocks. For this purpose, 971 aggregate samples and 643 rock samples of 11 different common volcanic lithotypes (including basalts, trachybasalts, trachytes, phonolites, ignimbrites and pyroclasts) were tested. These represent the majority of stone materials found in volcanic islands. Furthermore, correlations between the different properties of the aggregates (volumetric, geometric and mechanical properties) have been established, as well as between certain aggregate properties and the source rock. This allows an estimation of the foreseeable characteristics of the aggregates based on their origin. The results show that the aggregates from massive lithotypes provide superior resistance, partly due to their high density. These generally comply with the standard specifications although the particle shape may present an excessive flakiness index. However, the most abundant volcanic aggregates come from very porous rocks with a vesicular or scoriaceous structure, non-cubic particles, low resistance and high absorption, though they provide good drainage capacity. The high statistic dispersion of the geomechanical properties is due to the different viscosity of the magmas, degrees of explosiveness of the volcanic eruption and random spatial distribution. Even the abundant vesicular and scoriaceous volcanic aggregates, generally considered as marginal materials, may offer adequate quality and properties for certain construction applications. In this sense, the use of these aggregates might contribute to the development of infrastructures in these regions and thus a sustainable utilization of this natural material.

在火山地形中，特别是在岛屿地区，聚集体来自熔岩和热碎屑沉积物的机械破碎。这项研究为不同火山岩岩石类型的岩石力学特征以及从这些岩石中获得的聚集体提供了实验数据库。为此，测试了11种不同的常见火山岩型（包括玄武岩，石灰岩玄武岩，石灰岩玄武岩，方沸石，火成岩和火山碎屑岩）的971个聚集体样品和643个岩石样品。这些代表了火山岛中发现的大多数石材。此外，已经建立了骨料的不同性质（体积，几何和机械性质）之间的相关性，以及某些骨料性质和源岩之间的相关性。这允许基于聚集体的来源来估计聚集体的可预见特性。结果表明，块状岩石型聚集体具有较高的抵抗力，部分原因是其密度高。尽管颗粒形状可能表现出过高的脆性指数，但它们通常符合标准规格。然而，尽管火山岩聚集体具有良好的排水能力，但它们最丰富的火山聚集体来自具有多孔结构或多孔结构，非立方颗粒，低阻力和高吸收性的非常多孔的岩石。由于岩浆的粘度不同，火山喷发的爆炸程度和空间分布的随机性，地质力学特性的统计高度分散。即使是丰富的水泡和火山口火山聚集体，通常被认为是边缘材料，可以为某些建筑应用提供足够的质量和性能。从这个意义上讲，这些骨料的使用可能有助于这些地区基础设施的发展，从而可持续利用这种天然材料。