Study on the Optimum Mixing Condition for Control of Spalling in High Strength Concrete by a Orthogonal Array

Mun Hwan Lee; Young Hun Kim; Jong Chan Lee

doi:10.4028/www.scientific.net/KEM.385-387.717

Paper Titles

The Influence of the Amount of Silica Fume on the Mechanical Property of Ultra-High Performance Concrete
p.701

Creep Curve Modeling to Generate the Isochronous Stress-Strain Curve of Type 316LN Stainless Steel
p.705

Fracture Model for PT Flat Plate Connections under Seismic Loading
p.709

Study on Calculation Method of Fracture Parameters of the Tubular Based on 3D VCCT
p.713

Study on the Optimum Mixing Condition for Control of Spalling in High Strength Concrete by a Orthogonal Array
p.717

Effects of Equal Channel Angular Pressing and Heat Treatment on Low Cycle Fatigue Properties of 6005 Al Alloy
p.721

The Low Cycle Fatigue Behavior of Equal-Channel Angular Pressed Al 5052 Alloy
p.725

Application Technique of PZT Sensors to Detect Structural Damage
p.729

Fracture Analysis of an Oblique Crack Propagation in a Pre-Stressed Glass-Epoxy Composite
p.733

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Study on the Optimum Mixing Condition for Control of Spalling in High Strength Concrete by a Orthogonal Array

Abstract:

This study proceeded to find the optimum mixing rate of a high strength concrete with 80MPa of compressive strength using meta-kaolin, waste tire chips, polypropylene, and steel fiber together for improvement of fire resistance performance. To estimate of optimum mixing rate, the orthogonal array method was used to plan the factors (slump flow, air content, compressive and flexural strength, steel bar temperature and concrete spalling volume) of high strength concretes and experiment was executed. Then the functional relationship of each factor was valuated by general linear model of ANOVA and functional relation between the factors and the data was estimated using response surface analysis. The optimum mixing rate was computed as 80% replacement of silica fume volume by meta-kaolin, 3% replacement of fine aggregates volume by waste tire chips and 0.2% additive rate of polypropylene fiber without steel fiber to the total mixed volume with this modeling of the functional relationship.