Permeable concrete mixed with various admixtures

Kim, Yail J.; Gaddafi, Adel; Yoshitake, Isamu

doi:10.1016/j.matdes.2016.03.109

Cited by 46 publications

(18 citation statements)

References 23 publications

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“…Finally, some mixtures had manually cement amounts added, varying their AV. Table 1 represents the main parameters reviewed and used for designing PC mixtures and Table 2 shows the parameters found in the literature reviewed for each component in PC [5,6,[8][9][10][11]26]. Three mixtures with the DCP and the ACI 522R-10 normative were made in order to compare both methodologies, employing the same w/c ratio (0.40) and three s/c ratios (0.00, 0.50 and 1.00).…”

Section: Pavement Designmentioning

confidence: 99%

Multifunctional Porous Concrete Urban Pavements for a More Sustainable and Resilient Future

Elizondo-Martínez

Andrés‐Valeri

Juli-Gándara

et al. 2018

The 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment

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Many cities around the world are handling many problems derived from urbanization, resulting in an uncontrolled growth of cities. Moreover, Climate Change effects are affecting all countries and specially cities. In this context, urban drainage and paving strategies demand a bigger economical investment to avoid a great impact in citizens quality of life, and in the environment. The main objective of this research is to contribute, in an innovative way, with the construction of concrete urban pavements by studying, quantifying and trying to join together a series of characteristics and benefits that are analyzed nowadays, but in a separately way. Trying to achieve an integrated pavement, with resilient properties (adapted to Climate Change) and more sustainable (economically, socially and environmentally).

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Section: Pavement Designmentioning

confidence: 99%

Multifunctional Porous Concrete Urban Pavements for a More Sustainable and Resilient Future

Elizondo-Martínez

Andrés‐Valeri

Juli-Gándara

et al. 2018

The 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment

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“…Many researchers have pointed out the lack of fine aggregate or sand in the mixture as the main reason for PC’s poor mechanical capacity [9], changing the structural scheme from continuous material to discontinuous. Consequently, different kinds of additives are included in the mixture to compensate for this loss of mechanical capacity [10,11,12,13,14,15]. With the same objective, other authors have also tried to replace coarse aggregate (CA) with stronger polymers [16], including cellulose fibers as reinforcement [17,18,19,20], and complementing cement with silica fume or fly ash [10,16,21].…”

Section: Introductionmentioning

confidence: 99%

Proposal of a New Porous Concrete Dosage Methodology for Pavements

et al. 2019

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Although porous concrete pavement design methods are mainly focused on maintaining high permeability rates in order to improve their ability to manage stormwater runoff, the mixture strength is paramount for its durability and service life. This paper proposes a new mixture design method for porous concrete, named PCD (porous concrete design), derived from the ACI 522R-10 and ACI 211.3R-02 standards. The aim is to improve mechanical strength in porous concrete mixtures, while ensuring enough permeability for its use in urban roads. With PCD methodology it is possible to obtain mechanical strengths 30% higher than those produced with ACI methodologies, while maintaining permeability rates close to 2 cm/s, lower than those obtained with ACI methods but still enough to manage extreme storm events. Finally, with the analytical Hierarchy Process (AHP) multi-criteria decision-making methodology and also bearing in mind safety variables, the best porous concrete mixtures are the ones produced with PCD methodology.

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“…Some admixtures, such as pigments, pumping aids and expansive agents, are typically added manually from pre-measured containers as the amounts used are very small. [3][4][5] Chemical admixtures are classified according to the basic effects obtained with their use -listed in the European standards: 6 • reduction in the amount of mixing water,…”

Section: Introductionmentioning

confidence: 99%

“…The correlations given in the literature usually differ from one another and are valid only for limited ranges of operating parameters, e.g., an admixture addition allows us to produce a concrete mix with a relatively small amount of water, but a sufficient degree of liquidity allows us to mix it correctly into the concrete. [7][8][9] A relatively small amount of water used to produce a mixture based on a given mass of cement may contribute to the improvement of several parameters of hardened concrete, including: 4 • strength,…”

Section: Introductionmentioning

confidence: 99%

Characterization of new filler additions affecting the mechanical strength of concrete

Małek¹,

Jackowski²,

Życiński³

et al. 2019

Mater. Tehnol.

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In this work, the results of a chemical modification of concrete based on Portland cement by zeolite, metakaolinite and micrometakaolinite in amounts of (5, 10 and 15) w/%, and mass fractions of the concrete amount included in the mixture as a filler were summarized. The influence of the w/%, or mass fractions, of new commercial fillers on the concrete's mechanical strength was measured. The reference recipe of concrete contained three parts of aggregates: 0.125-0.250 mm, 0.250-0.500 mm and 0.500-1.000 mm. For the concrete production, white cement (42.5 MPa), water and a deflocculant based on polycarboxylate were used. To characterize the basic properties of the studied concrete, SEM observations, chemical compositions, slump-cone test results and time setting were widely investigated. Samples of the concrete were characterized with the compressive-strength and bending tests after (1, 7, 14 and 28) d of the curing process. The obtained results were compared with the reference samples of the concrete without chemical additions. This study proved that all the chosen modifiers had an increased effect on the final mechanical strength of the researched concrete samples and that they are very promising for applications in civil engineering and new building technologies in the future.

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Permeable concrete mixed with various admixtures

Cited by 46 publications

References 23 publications

Multifunctional Porous Concrete Urban Pavements for a More Sustainable and Resilient Future

Multifunctional Porous Concrete Urban Pavements for a More Sustainable and Resilient Future

Proposal of a New Porous Concrete Dosage Methodology for Pavements

Characterization of new filler additions affecting the mechanical strength of concrete

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