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Heat-expanded lightweight pebbles. Lightweight expanded clay aggregate (LECA) or expanded clay (exclay) is a lightweight aggregate made by heating clay to around 1,200 °C (2,190 °F) in a rotary kiln.
A silt fence on a construction site.. Geotextiles and related products have many applications and currently support many civil engineering applications including roads, airfields, railroads, embankments, retaining structures, reservoirs, canals, dams, bank protection, coastal engineering and construction site silt fences or to form a geotextile tube.
Before setting up the tropical peat research institute, the Sarawak government was concerned with international non-governmental organisations (NGO) lobbying in Europe that calls for an import ban of palm oil coming from tropical peatlands because of the claims that cultivation of oil palms on peatland contributes to global greenhouse gases emissions. [9]
A geomembrane is very low permeability synthetic membrane liner or barrier used with any geotechnical engineering related material so as to control fluid (liquid or gas) migration in a human-made project, structure, or system.
Peat in Lewis, Scotland. Peat forms when plant material does not fully decay in acidic and anaerobic conditions. It is composed mainly of wetland vegetation: principally bog plants including mosses, sedges and shrubs.
"Cob stitch" repair on old traditional cob cottage in Devon, England Maison de Jeanne, Sévérac-le-Château.Timber and cob construction. Cob is an English term attested to around the year 1600 [3] for an ancient building material that has been used for building since prehistoric times.
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 February 2025. Water located beneath the ground surface An illustration showing groundwater in aquifers (in blue) (1, 5 and 6) below the water table (4), and three different wells (7, 8 and 9) dug to reach it. Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in ...
Berbak National Park occupies part of the vast alluvial plain of East Sumatra, which comprises approximately one quarter of the island. The region is predominantly flat, being dissected by a number of meandering rivers that drain in a northeasterly direction toward the coast.