Evaluation of freeze-thaw durability of pervious concrete by use of operational modal analysis

Lund, Mia Schou Møller; Hansen, Kathleen A.; Brincker, Rune; Jensen, Annemette Hindhede; Amador, Sandro

doi:10.1016/j.cemconres.2018.01.021

Cited by 34 publications

(9 citation statements)

References 3 publications

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“…For pervious concrete, the fresh unit weight ( UW f ) is a more suitable measurement of workability than conventional slump cone test . In this research, a compaction energy was applied to a specific volume of fresh pervious concrete, and the density of the compacted volume was measured.…”

Section: Experimental Designmentioning

confidence: 99%

“…Considering the high permeability of pervious concrete, freeze–thaw methods like ASTM C666 or any other rapid freeze–thaw methods are not appropriate because they are based on the saturation state of effective voids. In practical application, these voids are almost never water-filled and could always release the pressure caused by freezing water . Hence, a slow freeze–thaw cycling method in accordance with Chinese Standard GB/T 50082–2009 was adopted.…”

Section: Experimental Designmentioning

confidence: 99%

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Use of Carbonation Curing to Improve Mechanical Strength and Durability of Pervious Concrete

Chen

Gao

2020

ACS Sustainable Chem. Eng.

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Carbonation curing is a promising method for CO 2 sequestration and strength improvement of cement-based materials. For normal cement concretes, the carbonation dominantly occurs in the outer layer zone of the specimen, and the overall strength improvement for a real structure is limited. Because of the high interconnected void content, pervious concrete is regarded as a better recipient for CO 2 curing. This paper aims to investigate the influence of carbonation curing on mechanical and durability performance of pervious concrete. Experimental results show that appropriate carbonation curing can effectively improve compressive strength, especially at early ages. Compared with conventional concrete, carbonation of pervious concrete is deeper and more homogeneous. However, pervious concrete becomes more sensitive to excessive carbonation so the carbonation duration needs to be strictly controlled. In addition, carbonation curing could significantly improve freeze−thaw and leaching resistance of pervious concrete. Mercury intrusion porosimetry results show that carbonation curing can reduce the influence of leaching on critical pore diameter but can hardly prevent the increase of macropores content caused by freeze−thaw. Analysis of BSE images shows that carbonation curing can improve the interfaces between aggregates and cement paste in pervious concrete and decrease the porosity of the interfacial transition zone. Therefore, carbonation curing is applicable for manufacturing long-term durable pervious concrete products.

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Section: Experimental Designmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Use of Carbonation Curing to Improve Mechanical Strength and Durability of Pervious Concrete

Chen

Gao

2020

ACS Sustainable Chem. Eng.

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“…Glass yam is the greatest well-known invigorator that is applied in compound manufacturing and there are dissimilar profitable types of it that some of them are as follows: AR, ECR, C, S, E (Lund et al, 2018).…”

Section: Glass Yammentioning

confidence: 99%

Concretes Resistance of Yam a Great Persistence

Gholami¹,

Haeri-Hamedani²,

Ghane³

et al. 2019

American Journal of Engineering and Applied Sciences

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Today all distinguish the position of earthquake withstanding of constructions in seismic-vulnerable zones. With respect to this opinion that current concrete constructions are usually considered and constructed depend on earliest rules lacking examining the result of seismic powers and the novel rules don't guess any shake, so, these structures must be persistence capability. Investigation on standards of HPFRCC substantial as one of the most appropriate limited persistence approaches of concrete constructions member has a distinct ineffectiveness. we can apply dissimilar approaches to maintenance destroyed concrete structures by the seismic or to complete shake persistance of current concrete structures. There are two procedures of applying steel sheets and FRP sheets for concrete memberships reinforcement or renovation. Each of these two approaches is comprehension of these resources with concrete and absence of organization in their way and features. First scholars have exposed that the recent HPFRCC substantial that mostly is a concrete with a high persistance with steel, glass, aramid and carbon yam has a appropriate interactive organization with concrete and can rise concrete persistance frame the opinion of assessment of bending and portional as these two other constituents. In this paper, we attempt to compare concretes which one consist of above yam frame the point of opinion of pressure and tonsorial persistance to make concrete sheets with high persistance entirely, that at last easy's receptacle of steel sheets had improved consequences of pressure and tonsorial persistance to generate these sheets into other models.

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“…The current research works are mainly concerned about the compressive test. Models have been established to simulate the compressive stress-strain curves of various concretes after the FTC [7][8][9][10][11][12][13]. Compared with the compressive mechanical properties, the irreversible tensile deformation probably has greater impacts on mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on cyclic tensile behaviour of air-entrained concrete after frost damage

2019

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To investigate fatigue tensile behaviour of air-entrained concrete after the freeze-thaw damage, fatigue tensile tests with four different loading paths were conducted on air-entrained concrete after 0, 100, 200 and 400 freeze-thaw cycles. The four different loading paths contained the monotonic (M) test where the envelope stress-strain curve was obtained, the cycles with constant strain increment (CSI) test where the variation of elastic modulus on the whole stress-strain curve was studied, the cycles to variable maximum strain amplitude (VMS) test where the low-cycle fatigue behaviour at different strain levels was analysed and the cycles with CMS' test, which was designed to analyse the post-peak behaviour of the specimens. Experimental results indicated that the properties of the air-entrained concrete basically remained unchanged under 200 freeze-thaw cycles, including the mass loss rate, tensile strength, elastic modulus and the dissipated energy per unit volume. While the freeze-thaw cycles increased over the critical value, the energy resulted from the cyclic load was not released from the materials and accumulated inside the materials fast. Energy accumulation directly led to the deterioration of the air-entrained concrete. To observe the pore structure of the air-entrained concrete, the scanning electron microscope test (SEM) was also adopted in this paper. Keywords. Low-cycle fatigue; air-entrained concrete; freeze-thaw cycles; post-peak behaviour; scanning electron microscope (SEM).

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Evaluation of freeze-thaw durability of pervious concrete by use of operational modal analysis

Cited by 34 publications

References 3 publications

Use of Carbonation Curing to Improve Mechanical Strength and Durability of Pervious Concrete

Use of Carbonation Curing to Improve Mechanical Strength and Durability of Pervious Concrete

Concretes Resistance of Yam a Great Persistence

Experimental study on cyclic tensile behaviour of air-entrained concrete after frost damage

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