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Studies on the renewability of polymeric binders for foundry

Grabowska B., Kaczmarska K., Bobrowski A.

Archives of Foundry Engineering

2012

Vol. 12, iss. 3

37-42

In this paper the results of studies of polymeric binders on the example of the new BioCo2 binder, including the problem of its renewability, are presented. The results of structural studies (FT-IR) for the BioCo2 binder before and after crosslinking, and bending strength tests Rgu fresh and renewed cured molding sands with BioCo2 binder are discussed. The cross-linking binder and curring of moulding sand was carried out by physical agents (microwave radiation, temperature). On the basis of obtained results was shown that it is possible to restore the initial properties of the adhesive of BioCo2 binder. The initial properties of moulding sand can be achieved, after the cross-linking binders and after curing in the moulding sands with bioCo2 binder , by supplementing the moulding sand composition by the appropriate amount of water.

The quantitative evaluation of the catchment available groundwater resources – the case study

Śmietański L.

Biuletyn Państwowego Instytutu Geologicznego

2010

nr 441 Hydrogeologia z. 10

183--192

The paper presents the author’s approach to the quantitative assessment of the river catchment available groundwater resources in case of the Łeba River catchment in Poland. A strong emphasis is put on the evaluation of the groundwater flow system renewability which should always precede the resources model simulations. After assessing the catchment recharge using river flow records and a big lysimeter approximation the recharge distribution was calculated using the author’s constant volume transformation (CVT) method. The subsequent construction of the groundwater flow model and application of the CVT method coupled with the virtual wells concept led to the evaluation of the amount and distribution of the available groundwater resources in the catchment.