TY - GEN
T1 - Size effect in concrete structures and influence of loading rate
AU - Bazant, Zdenek P
AU - Gettu, Ravindra
PY - 1990/1/1
Y1 - 1990/1/1
N2 - The size effect law models the influence of the dimensions of the structure or specimen on the failure stress. This model can be used to quantify the brittleness of failure, and determine material fracture parameters. Recent applications of the method are reviewed. Furthermore, results from an experimental investigation of the influence of loading rate on size effect and fracture behavior, in the static regime, are presented and discussed. The size effect on the fracture of concrete increases significantly with increasing time to failure. It also appears that as the loading rate decreases, the effective process zone length decreases, implying increase in the brittleness. The fracture toughness also decreases with increasing time to failure, explaining the usually observed decrease in strength.
AB - The size effect law models the influence of the dimensions of the structure or specimen on the failure stress. This model can be used to quantify the brittleness of failure, and determine material fracture parameters. Recent applications of the method are reviewed. Furthermore, results from an experimental investigation of the influence of loading rate on size effect and fracture behavior, in the static regime, are presented and discussed. The size effect on the fracture of concrete increases significantly with increasing time to failure. It also appears that as the loading rate decreases, the effective process zone length decreases, implying increase in the brittleness. The fracture toughness also decreases with increasing time to failure, explaining the usually observed decrease in strength.
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M3 - Conference contribution
AN - SCOPUS:0025028608
SN - 0872627772
T3 - Serv Durability Constr Mater Proc First Mater Eng Congr
SP - 1113
EP - 1123
BT - Serv Durability Constr Mater Proc First Mater Eng Congr
PB - Publ by ASCE
T2 - Serviceability and Durability of Construction Materials - Proceedings of the First Materials Engineering Congress Part 1 (of 2)
Y2 - 13 August 1990 through 15 August 1990
ER -