Damage and damage resistance of high strength concrete under the action of load and freeze-thaw cycles

Sun, Wei; Zhang, Y.M.; Yan, Huang; Mu, Ru

doi:10.1016/s0008-8846(99)00097-6

Cited by 154 publications

(66 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This result is in agreement with finding of the Sun et al [30] in which different strength grades of concrete under the simultaneous action of load and F/T cycles were studied and concluded that at the same stress ratio, concrete of higher strength could undertake more F/T cycles, and the dynamic elastic modulus decreased more slowly with F/T cycles. With the effect of CW curing on further hydration processes for 60 days before being exposed to F/T cycles, the requirements needed for more mature paste were not achieved for FA-ECC mixtures, which caused to high chloride ion permeability results and significantly scaled composite surface.…”

Section: Effects Of Self-healingsupporting

confidence: 92%

Self-healing capability of cementitious composites incorporating different supplementary cementitious materials

Şahmaran

Yıldırım

Erdem

2013

Cement and Concrete Composites

286

View full text Add to dashboard Cite

a b s t r a c tThe presence of deleterious substances and their transport are among the most important factors controlling the durability of cementitious composites. The present paper studies the relationship among the applied mechanical deterioration in terms of splitting tensile deformation, curing conditions and chloride ion permeability of Engineered Cementitious Composites (ECCs) that contain different supplementary cementitious materials (SCMs). Three SCMs, representing a wide range of compositions, were used in the study. The splitting tensile deformations are introduced to generate microcracks in ECC specimens, where cylindrical specimens were pre-loaded to different deformation levels. After that, the mechanically pre-cracked and pristine ECC specimens were exposed to three different curing conditions (continuous wet, continuous air, and freeze-thaw cycle) for up to 2 months. Rapid chloride permeability test (RCPT), microscopic observation and microstructural analysis were used to assess the rate and extent of selfhealing. Test results indicate that the SCM type greatly affects the self-healing capability of cementitious composites as measured by chloride ion permeability. Although ECC samples with fly ash have more unhydrated cementitious materials, and therefore, expectedly, a higher capacity for self-healing, more evident self-healing product was observed from the ECC mixture incorporating slag. Therefore, in addition to the crack width distribution and curing condition, the reaction products associated with SCMs have a great impact on the self-healing capability of cementitious composites.

show abstract

Section: Effects Of Self-healingsupporting

confidence: 92%

Self-healing capability of cementitious composites incorporating different supplementary cementitious materials

Şahmaran

Yıldırım

Erdem

2013

Cement and Concrete Composites

286

View full text Add to dashboard Cite

show abstract

“…The freezed water causes high internal hydraulic pressure, which in turn damages the concrete. Sun et al (1999) concluded that the applied stress/ strength ratio and the grade of concrete are the most important parameters that affect the concrete durability when exposed to freeze and thaw cycles. Mu et al (2002) has shown that concrete deterioration was further accelerated when freeze-thaw cycles, loading, and chloride salt attacks all acted simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability of Latex Modified Mortars Containing CNTs

Abdel-Mohti

Soliman

Shen

2018

Int J Concr Struct Mater

View full text Add to dashboard Cite

Durability of concrete and cementitious materials has been of a great concern to the construction industry in the last two decades due to the deterioration of large number of concrete structures which were built in the 60 and 70 s. Among different environmental conditions, the continuous exposure to freeze-thaw and thermal fatigue cycles remains one of the most aggressive conditions to concrete structures and bridges. On the other hand, the use of nanomaterials, such as carbon nanotubes, has shown promising results in improving the properties of cementitious materials. In this paper, the role of using carbon nanotubes (CNTs) in the thermal stability and durability of latex modified mortars (LMM) is examined. CNTs contents of 0.5 wt%, 1.0%, and 1.5 wt% of latex were added prior to mixing the latex modified mortar components and the resulting LMM specimens were subjected to freeze-thaw and thermal fatigue cycles. The mechanical properties and dimensional stability of LMM specimens were then evaluated. In general, it was observed that the addition of CNTs improve the compressive strength of LMM specimens. On the contrary, CNTs have limited or no influence in the tensile strength, development of shrinkage strains, and flexural capacity of LMM specimens under same thermal conditions.

show abstract

“…Freeze-thaw damage is a persistent historic problem, receiving widespread attention from academia and engineering field. Internationally renowned concrete expert Sun proved in 1999 that the concrete damage process is accelerated and the extent of damage increased under the simultaneous action of load and freeze-thaw cycles [1]. Therefore, freezing is an important factor affecting the durability of concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Fracture Theory Under Freeze-Thaw Cycles and Freeze-Thaw Resistance of Alkali-Slag Concrete

Li¹

2016

High Performance Concrete Technology and Applications

View full text Add to dashboard Cite

Despite the widespread research on alkali-activated concrete, its fracture properties under freeze-thaws are rarely studied; the response surface methodology (RSM) theory has not been put forward; and unstable fracture toughness, K IC S , influenced by freezethaws and slag content has not been researched. The purpose of this article is to investigate the calculation method of alkali-slag concrete (ASC) fracture parameters and provide theoretical support for RSM model of ASC prepared with Na 2 SiO 3 and NaOH composite activator. The influence law of freeze-thaw and slag content on unstable . RSM principles and advantages, its optimization content and procedure, the data processing software Design-Expert and verification analysis procedure of RSM model are put forward. Since the ASC structure is compact, characterized for water and air penetration resistance, its antifreezing characteristic is desirable.

show abstract

Damage and damage resistance of high strength concrete under the action of load and freeze-thaw cycles

Cited by 154 publications

References 1 publication

Self-healing capability of cementitious composites incorporating different supplementary cementitious materials

Self-healing capability of cementitious composites incorporating different supplementary cementitious materials

Thermal Stability of Latex Modified Mortars Containing CNTs

Fracture Theory Under Freeze-Thaw Cycles and Freeze-Thaw Resistance of Alkali-Slag Concrete

Contact Info

Product

Resources

About