TY - JOUR
JF - IJCE
JO - IJCE
VL - 3
IS - 3
PY - 2005
Y1 - 2005/9/01
TI - BEHAVIOR OF LOW TO HIGH-STRENGTH LIGHTWEIGHT CONCRETE UNDER TORSION
TT - BEHAVIOR OF LOW TO HIGH-STRENGTH LIGHTWEIGHT CONCRETE UNDER TORSION
N2 - Results of an experimental investigation performed to evaluate the effect of various concrete strength levels on behavior of lightweight concrete (LWC) under pure torsion are reported.The principle variable of the testing program was compressive strength of concrete (�'c) which ranged between 6.9 and 81.4 MPa. Ten mixture proportions were utilized for LWC of 1500 to 2050 kg/m3 unit weight. In total, sixty four (thirty two pairs) rectangular specimens with 100x 200 mm cross-section were tested. Ultimate torsion strength of LWC increases as uniaxial compressive strength increases however the increase rate reduces for high levels of concrete strengths. The test results are compared with predictions of elastic and plastic theories for torsion and the ACI Code. The Code underestimates the cracking torque of LWC under pure torsion. A regression equation incorporating test results is higher than the ACI equation prediction by a factor of 1.12.
SP - 182
EP - 191
AU - KHALOO R.,
AU - SHARIFIAN M.,
AD -
KW - HIGH
KW - STRENGTH CONCRETE
KW - TORSION STRENGTH
KW - LIGHTWEIGHT AGGREGATE CONCRETE
KW - TEST
UR - http://ijce.iust.ac.ir/article-1-56-en.html
ER -