摘要:
Composition de liant hydraulique destinée à être utilisée pour former un remblai autocompactant et réexcavable, ladite composition de liant hydraulique comprenant des cendres volantes, du ciment alumineux, et de la chaux hydratée, ladite composition de liant hydraulique étant destinée à être mélangée à une composition de granulat et à de l'eau pour former ledit remblai autocompactant et réexcavable.
摘要:
The present invention provides semi-solid and reinforced soil mixtures formed from aqueous soil mixtures such as dredge material, discrete reinforcing fibers such as glass fibers. The reinforced mixtures can include additives for partially solidifying the aqueous soil mixture, such as calcium-containing materials, cementitious materials, silicon-containing materials, aluminum-containing materials and mixtures thereof. The pH of the reinforced soil mixture can be adjusted to control deterioration of the reinforcing fibers, as desired.
摘要:
The invention relates to a composite fabric web for reinforcing soil layers, consisting of a textile lattice (1) and a water-permeable, flat textile structure (2) which is joined to the lattice (1). The aim of the invention is to provide a geotextile composite fabric web whose positioning not only achieves good reinforcement but also allows for the rapid and reliable consolidation of the subsoil situated beneath the textile composite fabric web. To this end the lattice (1) consists of strips (3) which are at least 4 cm wide, extend at distances (A) of at least 30 cm in the longitudinal direction of the composite fabric web and have high tensile strength, as well as of second strips (4) which are at least 4 cm wide, extend at distances (A) of at least 30 cm at right angles to the first strips (1) and have high tensile strength. At the points of intersection (5) the second strips are joined to the first strips (3) in a non-slip manner. The flat textile structure (2) consists of a tear-resistant material which can be stretched by at least 25 % and is positioned above the lattice (1).
摘要:
A clay soil is reinforced by intimately mixing it with randomly oriented polymer (e.g. polypropylene or polyester) fibres having an average length in the range of 6 to 18 mm; and compacting the resultant mixture. The fibres are preferably monofilaments rather than fibrillated and may be straight or crimped fibres and most preferably have a diameter of about 15 to 60 mu m. The fibres are preferably coated with a dispersing agent to prevent them from aggregating whilst being mixed into the soil.
摘要:
Material for forming soils, layers or subbases used in the preparation of roadways and grounds. The material includes an ungraded granulated material such as sand or industrially derived powder materials to which are added glass filament bundles in a proportion of 0.01 to 0.1 %. The invention also concerns a method and device for the preparation of the material.
摘要:
Described herein is a novel soil stabilization mixture comprising a mixture of soil to be stabilized, fibers and binder. The soil and the fibers are mixed together. The binder, which acts as a chemical stabilizer, is then added and mixing continues. The mixture is then applied to the soil to be stabilized and the stabilized soil is then compacted. The fibers can be recycled carpet fibers, fiber reinforced polymer, biofibers or a mixture thereof. The binder comprises Portland cement and at least one of crushed glass, metakaolin and ground blast furnace slag.
摘要:
Described herein is woven geotextile formed of a plain six-pick weave fabric having an apparent opening size (AOS) of at least 40 as measured in accordance with ASTM International Standard D4751, a water flow rate of at least 35 gpm/ft2 as measured in accordance with ASTM International Standard D4491, a 12% strain at a tensile load of at least 300 lb/in as measured in accordance with ASTM International Standard D4595 in the warp direction, and a 12% strain at a tensile load of at least 270 lb/in in accordance with ASTM International D4595 at 270 lb/in in the fill direction. Also described herein is a reinforced civil structure having a subgrade formed at least partially of soil; a base course; and a woven geotextile disposed between the subgrade and the base course.
摘要:
Methods for reducing or preventing topsoil erosion with hydrogels are described. Upon treatment, a plot of soil may exhibit improved water retention capacity, reduced topsoil erosion and improved aeration properties for plant growth.
摘要:
The disclosure concerns methods and compositions for prevention of soil erosion, soil contamination and increased seed germination for agricultural products. Certain methods relate to coating seeds to withstand drought conditions. Other methods relate to soil compositions containing a biopolymer to withstand drought conditions or to prevent erosion, to control dust or to prevent contaminated soil erosion.