نتایج جستجو برای: wetting drying cycles
تعداد نتایج: 120036 فیلتر نتایج به سال:
Natural fibre-reinforced cementitious composites are commonly used as outer construction materials. They usually suffer weather a result of being expose to various types climates. In this study, series experimental tests were carried out investigate the deterioration mechanism and mechanical properties mortars incorporating coconut fibres due repeated wetting drying. The results indicated that ...
8 A controlled-release formulation (CRF) has been developed for metolachlor, which reduced its 9 leaching in a sandy soil and improved weed control in comparison with the commercial formula10 tion. The current study tested the effect of soil wetting and drying cycles (WDCs) on metolachlor 11 fate (desorption, leaching, and weed control) applied as the CRF and as the commercial formula12 tion. M...
The objectives of this study were to determine the effects of drying and wetting (DW) cycles on soil organic carbon (SOC) mineralisation and on the priming effect (PE) induced by the addition of (13)C-labelled wheat straw to long-term no-tillage (NT) and conventional-tillage (CT) soils. We observed that the SOC mineralisation rate in rewetted soils was greater than that in soils that were kept ...
Wetting and drying of a rigid substrate by a Lennard-Jones fluid in molecular dynamics simulations is reported. The size of the substrate particles, being smaller than the fluid particles in former simulations, is now taken to be equal to, respectively larger than, that of the fluid particles. Recently, for the latter type of system a first order drying transition has been reported. Like before...
ÐA numerical algorithm is presented for the solution of geometrically challenging two-dimensional river and estuary ̄ows, based on an adaptive triangular tessellation of the ̄ow domains of interest. The governing, shallow water, equations are discretised using a ®nite volume approach embodying variable step time integrators, to yield a method that is second order accurate in both space and time...
The long-term benefit brought in lime-treated soil can be altered by the nature of surrounding wetting fluid, thus, affecting its durability. However, studies regarding such impact are limited. In this study, influence different fluids on microstructural, physicochemical modifications, and Unconfined Compressive Strength (UCS) evolution is investigated. Lime-treated soils subjected to drying cy...
The role of water in hardened Portland cement paste (hpc) is germane to an understanding of the nature of nanostructure – property relationships. The irreversible dimensional changes of hpc that occur on wetting and drying are dissimilar to those observed for other silicate minerals of interest to cement science. This irreversibility is also observed for the modulus of elasticity parameter. Len...
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