ISO 13428:2024
Geosynthetics — Determination of the protection efficiency of a geosynthetic against impact damage
Geosynthetics — Determination of the protection efficiency of a geosynthetic against impact damage
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 9
- Дата публикации:
- 3 октября 2024 г.
- Издание:
- ISO IS 13428 edition 2 version 1
- ICS:
- 59.080.70
This document describes an index test for the determination of the protection efficiency of a geosynthetic on a hard surface, exposed to the impact load of a hemispherical object. The index test measures the change in thickness of a thin lead plate lying between the geosynthetic and a rigid support. It is also used as a performance test, by using the real rigid surface to protect and the real sequence of geosynthetics. The test is applicable to all geosynthetics with apertures smaller than 15 mm (maximum size).
Abstract
Overview
ISO 13428:2024 - Geosynthetics - Determination of the protection efficiency of a geosynthetic against impact damage specifies an index test (and an optional performance test) to quantify how well a geosynthetic protects a hard surface from impact by a hemispherical object. The method measures the change in thickness of a soft metal plate (typically a lead plate) placed between the geosynthetic specimen and a rigid steel support after controlled impact. The test applies to geosynthetics with apertures smaller than 15 mm.
Key topics and technical requirements
- Test principle: A hemispherical probe strikes the geosynthetic specimen lying on a lead plate over a rigid steel support. Impact energy E = F × h (force × drop height).
- Index test parameters:
- Probe head: hemispherical, (20 ± 0.5) mm diameter; probe mass for index tests (1 000 ± 2) g; falling height (1 000 ± 10) mm.
- Lead plate: soft lead (EN 12588 grade 3) nominal thickness (2.0 ± 0.2) mm; initial and residual thickness measured in impact area.
- Specimens: five specimens per face, square, minimum 60 × 60 mm; applicable to geosynthetics with apertures
Технические детали
- Технический комитет
- ISO/TC 221 - Geosynthetics
- SKU
- ISO 13428:2024
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