Thermal induced stress and associated cracking in cement-based composite at elevated temperatures––Part II: thermal cracking around multiple inclusions

Fu, Yu; Wong, Yi Lin; Tang, Chun An; Poon, Chi Sun

doi:10.1016/s0958-9465(03)00087-8

Cited by 69 publications

(35 citation statements)

References 6 publications

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“…It can be seen that thermal tensile stress around limestone aggregate exists in RT ∼ 170 • C and a peak value is about +10.0 MPa at 110 • C. According to the 2D mesoscopic thermoelastic damage model [12], this kind of thermal stress is contributive to the initiation of tangential mesocracks. Based on the experimental results shown into Figure 2, the tangential mesocrack occurs and propagates around limestone aggregate.…”

Section: Relationship Between Cracking Morphology and Thermal Stressmentioning

confidence: 98%

“…According to numerical simulations by Fu et al the radical mesocrack initiates at 430 • C and propagates with the further heating [19]. The simulated and experimental results also indicated that the main regions with radical mesocracks concentrate on some shape edges of aggregates and in-between of aggregates [12,18].…”

Section: Mesocracking Manifestationmentioning

confidence: 99%

“…Analytical modeling and numerical simulation have been used to analyze thermal induced stress and associated cracking in cement-based composite at elevated temperature [12]. It has been indicated that if the matrix's CTE is greater than that of the inclusion, the inclusion is subjected to a tensile stress field.…”

Section: Introductionmentioning

confidence: 99%

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Temperature dependence of thermal induced mesocracks around limestone aggregate in normal concrete

Xuan

Shui

2009

Fire and Materials

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SUMMARYThis paper presents the results of thermal expansion measurements of mortar and limestone aggregate and thermal induced mesocracks around limestone aggregate in normal concrete exposed to high temperature, up to 800 • C. The former was measured by a fused silica Workhorse Dilatometer. The later was observed by the viewfinder of Polarizing Optical Microscope. The results showed that the difference in coefficient of thermal expansion between mortar and limestone exhibited the temperature dependence. Thermal induced tensile stress around limestone aggregate first took place, following the hydrostatic compression under higher temperature. During the whole heating process, the tangential, radical and linkage mesocracks in concrete gradually initiated and propagated for the response of thermal induced stress around limestone aggregate.

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Section: Relationship Between Cracking Morphology and Thermal Stressmentioning

confidence: 98%

Section: Mesocracking Manifestationmentioning

confidence: 99%

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Temperature dependence of thermal induced mesocracks around limestone aggregate in normal concrete

Xuan

Shui

2009

Fire and Materials

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“…[25]. The plastic-damage model assumes a non-associative plastic flow potential in the form of (13) where e is eccentricity; σ t0 = σ t0 (θ) is the uniaxial tensile stress at failure as a function of temperature; ψ is the dilation angle; q = √  3 2 S:S is the Mises equivalent stress, and p=-1 3 tr(σ) is the hydrostatic pressure.…”

Section: Matrixmentioning

confidence: 99%

“…Thermally-induced damage in cement-based composites was first thermo-mechanically modeled at the mesoscale by Fu et al to capture cracking around a single heterogeneity [12] or multiple heterogeneities [13]. The authors studied the influence of the heterogeneous constituents' coefficients of thermal expansion, size scale, and spatial distribution on stresses and cracking.…”

Section: Introductionmentioning

confidence: 99%

Multi-Physics Modeling of Fire-Induced Damage in High-Performance Concrete

Lammi¹,

Zhou²

2014

The International Journal of Multiphysics

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Characteristics of polyester polymer concrete using spherical aggregates from industrial by‐products

Hwang¹,

Kim²,

Yeon³

2013

J of Applied Polymer Sci

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Despite its excellent physical and mechanical properties, polymer concrete has not been widely used owing to its much higher unit price than conventional portland cement concrete. To ensure the economic efficiency of polymer concrete, it is utmost important to reduce the use of polymer binder, which occupies most of the production cost of polymer concrete. Based on the experimental investigations, replacing filler (calcium carbonate) and fine aggregate (river sand) with fly ash and rapid-cooled steel slag (RCSS), which are spherical materials obtainable from industrial by-products, was found to be effective for improving the strength characteristics and durability as well as the cost efficiency of polymer concrete. The product developed in this study successfully reduced the demand for polymer binder by 21.3% compared to the conventional product, which in turn saved the total material costs by 18.5%. Although the use of RCSS showed performance degradation at an elevated temperature condition, considering typical temperature ranges that actual concrete infrastructures experience, it is expected that the polymer concrete using fly ash and RCSS will provide high-level performances as construction and repair materials.

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Thermal induced stress and associated cracking in cement-based composite at elevated temperatures––Part II: thermal cracking around multiple inclusions

Cited by 69 publications

References 6 publications

Temperature dependence of thermal induced mesocracks around limestone aggregate in normal concrete

Temperature dependence of thermal induced mesocracks around limestone aggregate in normal concrete

Multi-Physics Modeling of Fire-Induced Damage in High-Performance Concrete

Characteristics of polyester polymer concrete using spherical aggregates from industrial by‐products

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