Compression-Shear Behavior and Water Impermeability of Rubber Seal in Precast Concrete Structures
Keywords:immersed precast concrete structure, compression-shear behavior of joint, water impermeability, elastomeric bearings
This paper attempts to apply the precast construction system on concrete swimming pools. Elastomeric bearings are chosen to be used as rubber seals in order to provide both shear resistance between segments and leakage prevention to the structures. The study methods involve 2 main experiments, accordingly. To simulate the conditions of immersed structures, the prototype of precast swimming pool and the joint between segments are designed. The compression-shear tests of such joints are conducted subject to direct shear and confinement to investigate the shear resistance of the rubber seals. The test results show that the final shear stress under confinements of 1 and 2 MPa and rubber hardness levels of 60 and 70 are considerably higher than the required shear stress while the rubbers prevent the slippery. The water impermeability test is conducted on the specimen made with full depth and thickness of the prototype. Three-dimensional finite element models are also created using ANSYS to determine the stresses caused by the post-tensioned BBR bars. Results from numerical models exhibit non-uniformly distributed stresses in the rubber seal. Two other important factors are found to have influence on impermeability performance: the creep effect of rubber and the surface finishing of contacted precasts.
How to Cite
Authors who publish with Engineering Journal agree to transfer all copyright rights in and to the above work to the Engineering Journal (EJ)'s Editorial Board so that EJ's Editorial Board shall have the right to publish the work for nonprofit use in any media or form. In return, authors retain: (1) all proprietary rights other than copyright; (2) re-use of all or part of the above paper in their other work; (3) right to reproduce or authorize others to reproduce the above paper for authors' personal use or for company use if the source and EJ's copyright notice is indicated, and if the reproduction is not made for the purpose of sale.