Investigation of freeze–thaw effects on mechanical properties of fiber reinforced cement mortars

Çavdar, Ahmet

doi:10.1016/j.compositesb.2013.11.013

Cited by 84 publications

(28 citation statements)

References 18 publications

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“…the performances of concrete structures by destroying the compactness of the superficial concrete in reinforced concrete, developing the propagation of internal cracks in the cement paste and accelerating the process of ice formation in the internal structure, thus causing serious and unacceptable loss [1][2][3][4][5]. Moreover, one of the foremost issues [6,7] affecting the durability of concrete structures is steel corrosion caused by the carbonation of concrete [8][9][10], which also reduces the durability of reinforced concrete structures.…”

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confidence: 99%

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Zhang

Kim

et al. 2017

Mater Struct

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The durability performance of cementitious material is traditionally based on assessing the effect of a single degradation process. However, this study investigates the coupled deterioration properties of mortar incorporating industrial solid wasteground granulated blast furnace slag (BFS) and different mineral admixtures, such as calcium sulfate (CS) and limestone powder (LSP). The combined deterioration properties caused by carbonation and frost damage in the mortar sample were experimentally investigated with respect to accelerated carbonation and freeze-thaw tests. Different degrees of deterioration, i.e. after subjected to 12, 30 and 60 freeze-thaw cycles, were induced in the freeze-thaw tests. The experimental investigation of single degradation revealed that the compressive strength, frost resistance and carbonation resistance decrease as the BFS replacement ratio increases by weight from 0 to 45%. The less amount of CH in the BFS cement leads to the carbonation progress more easily. Moreover, to achieve the same strength as ordinary Portland cement, 2 wt% CS and 4 wt% LSP in the BFS mortar are required. However, the data shows that incorporating LSP into the BFS mortar produces a lower frost resistance. The combined damage tests revealed that different deterioration degrees resulting from 12, 30 and 60 freeze-thaw cycles slightly decreased the carbonation resistance, which is related to the decrease in the inkbottle pore volume due to its water retention characteristics. Simultaneously, the pre-carbonation deterioration could effectively decrease the surface mass scaling of the freeze-thaw and the pore structure undergoes densification due to pre-carbonation.

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confidence: 99%

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Zhang

Kim

et al. 2017

Mater Struct

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“…However, adverse environmental conditions, such as: temperature variations [1], sulphates attack [2], and contact with acids [3], combined with the external loads [4], produce a reduction in their mechanical resistance and durability over time. With the aim of improving their mechanical resistance, different types of reinforcement materials can be added to the mortar [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Metallic Waste Addition on the Physical and Mechanical Properties of Cement-Based Mortars

et al. 2018

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Featured Application: The development of advance construction materials based on waste valorisation is a reality. The cement-based mortar with recycled metallic waste presented in this study could be potentially used as a building material with crack self-monitoring properties.Abstract: This paper investigates the influence of the type and amount of recycled metallic waste on the physical and mechanical properties of cement-based mortars. The physical and mechanical properties of cement mortars, containing four different amounts of metallic waste (ranged 4 to 16% by cement weight), were evaluated by measuring the bulk density, total porosity, flexural and compressive resistance, and dynamic elastic modulus by ultrasonic tests. All the properties were measured on test specimens under two curing ages: 7 and 28 days. Additionally, the morphological properties and elemental composition of the cement and metallic waste were evaluated by using Scanning Electron Microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS), and X-ray fluorescence (XRF). Main results showed that the addition of metallic waste reduced the bulk density and increased the porosity of the cement-based mortars. Furthermore, it was observed that flexural and compressive strength proportionally increased with the metallic waste addition. Likewise, it was proven that elastic modulus, obtained by compressive and ultrasonic tests, increases with the metallic waste amount. Finally, based on a probability analysis, it was confirmed that the addition of metallic waste did not present a significant effect on the mechanical performance of the cement-based mortars.

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“…Apart from conventional air-entraining agents, some kinds of additives with appropriate amount are beneficial for the enhancement of the resistance of freeze-thaw in recent researches as well. These additives include synthetic zeolite [97], organic resins [98], encapsulated siloxane [75], fiber [99,100] and nano particles [101].…”

Section: ) Guneyisi Et Al Investigated the Deterioration Of Concretmentioning

confidence: 99%

Recent durability studies on concrete structure

Tang

Yao

Andrade

2015

Cement and Concrete Research

450

121

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Investigation of freeze–thaw effects on mechanical properties of fiber reinforced cement mortars

Cited by 84 publications

References 18 publications

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Effect of Metallic Waste Addition on the Physical and Mechanical Properties of Cement-Based Mortars

Recent durability studies on concrete structure

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