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A platform for research: civil engineering, architecture and urbanism
High performance lightweight aggregate concrete under biaxial loading
This paper presents first research results of short-term biaxial compression tests on high performance lightweight aggregate concrete. The tests were performed by a multiaxial testing machine. The loads were transferred by steel brushes to the specimen to minimize the lateral restraint on the surface. Ultimate strength, fracture behaviour and stress-strain-relationships were studied on two different concrete types. The all lightweight aggregate concrete (ALWAC) had a cylindrical strength of fc,cyl = 78,5 MPa and a dry density of 1,62 kg/dm3, the lightweight aggregate concrete with natural sand instead lightweight sand (LWAC) had a cylindrical strength of fc,cyl = 86,2 MPa and a dry density of 1,92 kg/dm3. The application of transverse compression caused a strength increase dependent on the stress combination. The maximum strength increase compared to uniaxial compression was approximately 30 % for both concrete, the biaxial strength fcc was 12 % (ALWAC) and 20 % (LWAC) higher than the uniaxial compressive strength, respectively.
High performance lightweight aggregate concrete under biaxial loading
This paper presents first research results of short-term biaxial compression tests on high performance lightweight aggregate concrete. The tests were performed by a multiaxial testing machine. The loads were transferred by steel brushes to the specimen to minimize the lateral restraint on the surface. Ultimate strength, fracture behaviour and stress-strain-relationships were studied on two different concrete types. The all lightweight aggregate concrete (ALWAC) had a cylindrical strength of fc,cyl = 78,5 MPa and a dry density of 1,62 kg/dm3, the lightweight aggregate concrete with natural sand instead lightweight sand (LWAC) had a cylindrical strength of fc,cyl = 86,2 MPa and a dry density of 1,92 kg/dm3. The application of transverse compression caused a strength increase dependent on the stress combination. The maximum strength increase compared to uniaxial compression was approximately 30 % for both concrete, the biaxial strength fcc was 12 % (ALWAC) and 20 % (LWAC) higher than the uniaxial compressive strength, respectively.
High performance lightweight aggregate concrete under biaxial loading
Scheerer, S. (author) / Curbach, M. (author)
2002
11 Seiten, 6 Bilder, 3 Tabellen, 9 Quellen
Conference paper
English
High Performance Lightweight Aggregate Concrete under Biaxial Loading
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