Fracture parameters of alkali-activated aluminosilicate composites with ceramic precursor: durability aspects
نویسندگان
چکیده
Four sets of alkali-activated aluminosilicate (AAAS) composites based on ceramic precursors were studied in terms their characterization by mechanical fracture parameters as a basis for considerations durability. AAAS made brick powder precursor and alkaline activator with various silicate moduli (Ms = 0.8, 1.0, 1.2, 1.4, 1.6) investigated. The differed the used filler: quartz sand or rubble. Two different particle size ranges 0–1 mm 0–0.3 both types filler. test specimens had nominal dimensions 40 × 160 provided notch at midspan after 28 days hardening. notches cut up to 1/3 height specimens. subjected three-point bending tests during which force vs. deflection (F–d) crack mouth opening displacement (F–CMOD) diagrams recorded. Tensile strength ft,ID specific energy GF,ID values identified using inverse method neural network ensemble. obtained F–CMOD subsequently evaluated double-K model supported values. allows quantification two levels propagation: initiation, corresponds beginning stable growth, unstable propagation.
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ژورنال
عنوان ژورنال: Procedia structural integrity
سال: 2021
ISSN: ['2452-3216']
DOI: https://doi.org/10.1016/j.prostr.2021.10.025