Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Mohammed Hatem Mohammed"'
Publikováno v:
Construction and Building Materials. 104:1-8
In the very deep borehole (VDH) concept for high level radioactive waste disposal, the combined usage of clay and concrete provides an attractive way of achieving both high strength and low permeability required for sealing the various sections of th
Publikováno v:
Tunnelling and Underground Space Technology. 45:10-19
Grouting of the rock surrounding high-level waste (HLW) can serve to minimize groundwater flow around it and thereby to retard erosion of waste-embedding clay (buffer) and transport of possibly released radionuclides. Earlier attempts have shown the
Publikováno v:
Engineering. :217-229
The rheological properties of cement-based grouts containing talc or palygorskite were investi- gated for optimizing fluidity and quick strengthening at injection. The fluidity controls the ability of grout to penetrate fractures and can be determine
Publikováno v:
Engineering. :869-876
This study describes the performance of concrete in fresh state, intended for sealing deep bore-holes in the host rock of radioactive repositories. Set of different paste volumes, combinations of water-to-powder ratios and fine aggregate contents hav
Autor:
Roland Pusch, Sven Knutsson, Jan-Erik Jonasson, Mats Emborg, Alireza Pourbakhtiar, Mohammed Hatem Mohammed, Nadhir Al-Ansari
Publikováno v:
Engineering. :765-774
Fractured, very permeable rock hosting repositories for radioactive waste will require grouting. New grout types of possible use where long-term performance is needed should have a small amount of cement for minimizing the increase in porosity that w
Autor:
Sven Knutsson, Roland Pusch, Georg Grathoff, Alireza Pourbakhtiar, Mohammed Hatem Mohammed, Laurence N. Warr
Publikováno v:
Engineering. :251-267
Deep investigation boreholes in crystalline rock for site selection of repositories for high-level radioactive waste are proposed to be sealed by installing a series of dense concrete and clay plugs. These should prevent radionuclides from leaking ca
Publikováno v:
Natural Science. :906-918
Multibarrier concepts are commonly proposed for effective isolation of highly radioactive waste (HLW). Present concepts consider the host rock as a barrier by retarding migration of possibly released radionuclides to the biosphere, containers for pre
A concept for the disposal of highly radioactive waste at depth in the Earth’s crust using very deep bore-holes requires that the upper 2 km’s of the 800 mm diameter, steeply drilled holes, be effectively sealed. This can be achieved by using den
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e8880892f74fd178512ac95335bbe9e
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15405
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15405
Publikováno v:
WIT Transactions on Ecology and the Environment.
Two basically different concepts for disposal of highly radioactive waste are the often cited KBS-3 method implying isolation of such waste in copper canisters in short holes bored from tunnels at ...
Autor:
Mats Emborg, Alireza Pourbakhtiar, Sven Knutsson, Mohammed Hatem Mohammed, Martin Nilsson, Roland Pusch, Nadhir Al-Ansari
Publikováno v:
Journal of Civil Engineering and Architecture. 7
The paper describes assessment of the performance of cement-poor concreteson the basis of packing theory. The concretes are intended for sealing segments of deep boreholes and have a small amount of cement for minimizing the mutual chemical impact on