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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.
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]
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.
Soil formation, also known as pedogenesis, is the process of soil genesis as regulated by the effects of place, environment, and history. Biogeochemical processes act to both create and destroy order within soils.
"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.
ECMWF soil moisture forecast for the East Asia region, showing the key moisture levels and intermediate measurements Field capacity A flooded field will drain the gravitational water under the influence of gravity until water's adhesive and cohesive forces resist further drainage at which point it is said to have reached field capacity. [20]
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.
Corning Glass Works has reproduced a blank of a material of similar chemical composition and internal structure, which displays under reflected and transmitted light the same "Lycurgus effect" of green to red colour change as the Lycurgus cup material does. [21]