Polytechnic and design, Vol. 7 No. 4, 2019.
Professional paper
https://doi.org/10.19279/TVZ.PD.2019-7-4-05
APPLICATION OF BENTONITE IN WATERPROOFING OF UNDERGROUND STRUCTURES
Ivana Pavlić
; Zagreb, University of Applied Sciences, Zagreb, Croatia
Željko Lebo
; Zagreb, University of Applied Sciences, Zagreb, Croatia
Anja Mandić
; Zagreb University of Applied Sciences, Zagreb, Croatia,student
Abstract
Bentonite is an industrial material that has a significant role in solving engineering problems. It's dominant component is montmorillonite which makes at least 80% of it's composition. Among the various types, sodium is the most commonly used as an essential part of the composition of bentonite granules. It's characteristics, such as high swelling ability, the properties of thixotropy (in a mixture with water it transfer into the gel), and high water absorption capacity (it can absorb 12 to 15 times the mass of water from the dry substance itself) give it a great advantage in geotechnical works as waterproofing material. This paper presents an application of bentonite carpets as an isolation agent in the reconstruction of the wine basement and the construction of the Roxanich Heritage Wine Hotel in Motovun, with a more extensive description of the bentonite membrane characteristics, in general. Bentonite carpet consist of bentonite membrane in between two layers of geotextile, all bonded by thick stitching. Waterproofing system, used for Roxanich Heritage Wine Hotel, completes with tapes Waterstops RX 101, bentonite granules, bentonite Bentoseal paste and polymeric waterproofing. This system was used throughout the basement extending to five underground floors. It was proved to be an effective waterproofing solution, appropriately engineered for it's operation in difficult ground conditions. This paper presents the results of additional laboratory testing of materials - granulometry and permeability. They fully confirmed the waterproofing applied.
Keywords
bentonite membrane; montmorillonite; waterproofing system
Hrčak ID:
236125
URI
Publication date:
18.12.2019.
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