Environmental Aspects of Construction with Waste Materials by Th.G. Aalbers, H.A. van der Sloot, J.J.J.M. Goumans

By Th.G. Aalbers, H.A. van der Sloot, J.J.J.M. Goumans

The idea that of Sustainable improvement, implicating the security of soil and groundwater, the hindrance of waste creation and the re-use of soild waste material remains to be the top subject of WASCON '94. even though it is obviously well-known in such a lot international locations that items derived from stable waste material should be utilized as building fabrics, learn continues to be had to check a number of environmental difficulties.

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Calcium activities in percolates from slags and soils. Calcium ahvines were calculated with ECOSAT [3]. 5) arc indicated. (+) arc pacolates from s t 4 slag and soils under steel slag and ( ) are percolates kom P-slag and soils under P-slag. ~~ 35 approximately 250 meqkg of Ca was retained in the soil column until the moment of pHbreakthrough. This appears to match well with the estimated potential binding capacity of soil organic matter in soil B (220 meqkg). After the pH breakthrough, Ca solubility quickly approached that of Ca(OH),, as governed by steel slag (Fig.

The response in percolation in January and February for BF slag and steel slag comes from occasions when the accumulated snow melted in a short time. 1993 was warmer and drier than normal during the first half of the year and wetter and colder than normal during the second half of the year (Vhder och Vatten 1993). As a consequence, very little percolate was produced during spring and early summer 1993, see Figure 1. The steel slag gave the earliest and largest response to rainfall. This is a compact slag with little porosity.

Science. in press. [6] B u m a n , P. 1985. Carbon/sesquioxide ratios in organic complexes and the transition albic-spodic horizon. J. of Soil Science, 36. 355-260. A. 1992. A unifying model of cation binding by hutnic substances. Geochirn. Cosrnochirn. Acta 56, 3627-3641. M. Goumans, H A . G. V. All rights reserved. 39 - Leaching of slags and ashes controlling factors in field experiments versus in laboratory tests A-M. Hartlen Swedish Geotechnical Institute, S-581 93 Linkoping, Sweden, Abstract Significant differences in pH and redox potential were obtained in field experiments in comparison with the values obtained in laboratory column tests.

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