The distribution, type, popularity, size and availability of river-run gravel and crushed stone for use in land drainage systems and their suitability for mineral soils in Ireland

The performance of land drainage systems installed in mineral soils Ireland is highly variable, and dependent on, amongst other factors, the quality suitability aggregate used. In Ireland, for usually river-run gravel crushed stone. This study classified distribution, type, popularity, size availability aggregates throughout quantified their use soils. Eighty-six quarries were surveyed. Limestone (80% lithologies) are widespread country. quarry sizes (“Q sizes”), reported by as either a single size, that is, “50 mm”, or graded 20–40 mm, changed across lithology region were, most cases, larger than what currently recommended. A particle distribution analysis 74 samples from 62 showed individual Q increased variability with increasing size. some regions, sold does not meet current national regulations, which specify an ranging 10 to 40 mm. these five different textures was compared using three established design criteria. It found too large heavy soil therefore unsuitable envelope material. Guidance contractors, farmers owners will be required, investment may needed produce satisfies An based on one combination criteria, where texture conducted appropriate chosen off its 15% passing required.