Browsing by Author "Kurtis, KE"

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    Creep and shrinkage of high-performance lightweight concrete
    (AMER CONCRETE INST, 2004) Lopez, M; Kahn, LF; Kurtis, KE
    Two high-performance lightweight concrete (HPLC) mixtures with average compressive strengths of 68.5 and 75.4 MPa (9950 and 10,950 psi) were developed. Their air-dry unit weights were 1875 and 1905 kg/m(3) (117 and 119 lb/ft(3)), respectively. Twenty-six creep specimens were loaded at 16 or 24 h to 40 or 60% of their initial strength. This preliminary investigation showed that expanded slate HPLC experienced less creep, but slightly more shrinkage than normalweight high-performance concrete of similar paste content, mixture proportions, and strength.