Experimental investigation on freeze–thaw durability of Portland cement pervious concrete (PCPC)

Wu, Hao; Liu, Zhuo; Sun, Beibei; Yin, Jian

doi:10.1016/j.conbuildmat.2016.04.130

Cited by 109 publications

(27 citation statements)

References 21 publications

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“…The values of these properties are important to correct the water absorption of each aggregate without changing the water-to-cement ratio (w/c) of mix proportion and therefore affecting the mechanical properties of the mixtures [32]. The aggregate that presented higher absorption was CW, what is related to its heterogeneous nature [13,15,20], as expected the density of the sustainable aggregates is lower than the reference due to its production process and nature.…”

Section: Methodsmentioning

confidence: 99%

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Correlation between Permeability and Porosity for Pervious Concrete (PC)

Sandoval

Galobardes

Cezario

et al. 2019

DYNA

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The aim of this study was to propose a correlation for the hydraulic parameters of pervious concrete (PC). Thus, three aggregates from civil construction waste and one basalt aggregate (reference) were used to produce PC. The ratio c/a (cement: aggregate) 1:3.26 and a w/c ratio of 0.34 were used in all mixtures. Compressive and flexure tensile strength tests were performed to mechanically characterize the mixtures produced, whereas porosity and constant head permeability tests were also carried out to assess the material hydraulic properties.Firstly, the experimental results were compared with the requirements established in international guidelines (ACI 522R-10, NBR 16416(2015) and VTT-R-080225-13). The results complied with the guidelines indicating it is feasible to produce pervious concretes with the sustainable aggregates used in the study in low structural applications such as walkways. On the other hand, a correlation between permeability and porosity was proposed based on Darcy’s and Bernoulli’s laws. The proposed equation, obtained by means of a non-linear regression, is an exponential equation that characterizes the hydraulic efficiency of the internal channels of the material considering the pores interconnection. The correlation between porosity and permeability was finally validated using results from the literature showing the same trend found in laboratory, and therefore it was demonstrated that the proposed correlation in an efficient tool to predict the hydraulic efficiency of pervious concrete.

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Section: Methodsmentioning

confidence: 99%

“…According to the literature, two types of tests are applied: Falling or Constant [9][10][11][12]. Values of permeability coefficient from 1.5 to 30 mm/s were found [10,14,15].…”

Section: Introductionmentioning

confidence: 99%

Correlation between Permeability and Porosity for Pervious Concrete (PC)

Sandoval

Galobardes

Cezario

et al. 2019

DYNA

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“…on the freeze-thaw resistance should be explored, and the degradation characteristics of concrete should be studied. [4][5][6][7][8] Compared with permeable concrete, eco-porous concrete has a higher porosity and a larger pore size. There were few researches on the freeze-thaw resistance of eco-porous concrete.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the freeze-thaw resistance of eco-porous concrete containing fly ash

Zhang¹,

Yin²,

Li³

et al. 2018

Mater. Tehnol.

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Laboratory tests were conducted to evaluate the freeze-thaw resistance of eco-porous concrete containing fly ash. In order to address the freeze-thaw resistance of eco-porous concrete, the mass loss, compressive strength and relative dynamic modulus of elasticity (RDME) were obtained. Furthermore, based on the RDME, the freeze-thaw damage index (FTI) was provided to evaluate the internal damage. The results showed that the higher the amount of fly ash, the poorer is the frost resistance of porous concrete. The mass, compressive strength and RDME of specimens decreased with the increasing freeze-thaw cycles. The compressive strength decreased with an increase in fly ash, but the initial compressive strength is sufficient for requirements. Therefore, the content of fly ash should be controlled when producing eco-porous concrete and predicting its performance under freeze-thaw attacks with the explored method. Keywords: eco-porous concrete, fly ash, freeze-thaw resistance, mass loss, relative dynamic modulus of elasticity (RDME), freeze-thaw damage index (FTI) Avtorji prispevka so z laboratorijskimi preizkusi ugotavljali odpornost na zamrzovanje in odtaljevanje (FTR, angl.: Freeze-Thaw Resistance), s pepelom polnjenih ekoporoznih betonov. Da bi dobili podatke o odpornosti betona so dolo~evali izgubo mase, tla~no trdnost in relativni dinami~ni modul elasti~nosti (RDME). Na podlagi RDME so dolo~ili indeks po{kodb med preizkusom zamrzovanja in odtaljevanja (FTI, angl.: Freeze-Thaw Damage index), ki je merilo notranjih po{kodb betona po izvedenem preizkusu. Rezultati so pokazali, da ve~ja kot je polnitev poroznega betona z elektrofiltrskim pepelom, slab{a je njegova odpornost na zamrzovanje. Masa, tla~na trdnost in RDME preizku{ancev so se zmanj{evali z nara{~ajo~im {tevilom ciklov zamrzovanja in odtaljevanja. Tla~na trdnost poroznega betona se je precej zmanj{ala s pove~evanjem dele`a elektrofiltrskega pepela, kljub temu, da so bile vrednosti za~etne tla~ne trdnosti betona znotraj predpisov. Zato je potrebno deleè lektrofiltrskega pepela nadzorovati, ko se oblikuje nove, s pepelom polnjene, ekolo{ke porozne betone in jih testirati oz. ovrednotiti z, v tem~lanku opisano, metodo zamrzovanja in odtaljevanja. Klju~ne besede: ekoporozni beton, elektrofiltrski pepel, odpornost na zamrzovanje in odtaljevanje, izguba mase, relativni dina-mi~ni modul elasti~nosti (RDME), indeks po{kodb betona nastalih med preizkusom zamrzovanja in odtaljevanja (FTI)

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“…Because of the structural characteristics, many benefits can be achieved by using pervious concrete, including quick water drainage, tire-pavement interaction noise abatement and reduction in urban heat island effect [2][3][4][5][6][7]. Because of these benefits, pervious concrete is widely used nowadays and it is attracting extensive concerns.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Hydraulic Behaviors of Eco-Friendly Pervious Concrete Incorporating Fly Ash and Blast Furnace Slag

2018

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Eco-friendly pervious concretes containing fly ash (FA) and blast furnace slag (BFS) were prepared in this study. The compressive strength and hydraulic behaviors were investigated to explore the effect of replacement content of FA and BFS. Rheological tests of cementitious pastes were first conducted and the results showed that FA could increase the apparent viscosity and BFS did not change the rheology performance. Compared to traditional concretes, FA and BFS both decreased the compressive strength of pervious concrete at 28 d, while pervious concrete incorporated with FA and/or BFS presented comparable strength at 60 d. Compared to the control concrete mix, at the same replacement rate, FA changed the compressive strength more obviously than BFS. FA and BFS both decreased the effective porosity and permeability coefficient of pervious concrete. However, when the replacement rate (30%) was the same, concretes with ternary blends presented obviously larger porosity than binary blends. The relationships between porosity and permeability, and strength were also established.

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Experimental investigation on freeze–thaw durability of Portland cement pervious concrete (PCPC)

Cited by 109 publications

References 21 publications

Correlation between Permeability and Porosity for Pervious Concrete (PC)

Correlation between Permeability and Porosity for Pervious Concrete (PC)

Investigation of the freeze-thaw resistance of eco-porous concrete containing fly ash

Mechanical and Hydraulic Behaviors of Eco-Friendly Pervious Concrete Incorporating Fly Ash and Blast Furnace Slag

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