Artículos de revistas
Modified Mortar Pad Behavior In The Transfer Of Compressive Stresses
Comportamento De Almofadas De Argamassa Modificada Na Transferência De Tensões De Compressão
Registro en:
Revista Ibracon De Estruturas E Materiais . Ibracon - Instituto Brasileiro Do Concreto, v. 9, n. 3, p. 414 - 434
1983-4195
S1983-41952016000300414
Autor
Ditz
J. D.; Debs
M. K. EL; Siqueira
G. H.
Institución
Resumen
This research aims to analyze the compressive stress transfer between precast concrete elements using cement mortar pads modified with polypropylene fibers, styrene-butadiene latex and heat-expanded vermiculite. The stress transfer analyses are performed interleaving a cementbearing pad between two concrete blocks, subjecting the entire specimen to different compressive load tests. The parameters analyzed in the tests are: surface roughness (using bosses on the bonded phase of different thicknesses), compressive strength with monotonic and cyclic loadings. The main results obtained in this study are: a) the presence of pad increased the strength in 24% for thicknesses of imperfections of 0.5 mm and approximately 12% for smooth faces blocks; b) gain of effectiveness of the bearing pad when the concrete strength was reduced; c) for cyclic loading, the bearing pad increased in 48% the connections strength. 9 3 414 434