Comparative study on porosity and permeability of conventional concrete and concrete with variable proportions of natural zeolite additions

Márquez, Juan Carlos de la Cruz; Campo, José María Del; Colorado, David

doi:10.4067/s0718-915x2015000300009

Cited by 8 publications

(6 citation statements)

References 10 publications

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“…The porosity values could be due the aggregates size fraction of SA utilized in this study with porosities of 12 and 19%. Normal values for conventional concrete porosity range between 9 and 10% [60]. Tamayo et al [33] presented similar porosity and absorption results with 100% replacement of EAFS.…”

Section: Physical Properties Of Hardened Concretementioning

confidence: 86%

Siderurgical Aggregate Cement-Treated Bases and Concrete Using Foundry Sand

et al. 2021

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Cement-treated bases are soils, gravels or manufactured aggregates mixed with certain quantities of cement and water in order to improve the characteristics of a base or sub-base layer. Due to the exploitation of natural aggregates, it is a matter of importance to avoid shortage of natural resources, which is why the use of recycled aggregates is a practical solution. In this paper we studied the feasibility of the use of untreated electric arc furnace slags and foundry sand in the development of cement-treated bases and slag aggregate concrete with a lower quantity of cement. We analyzed the physical, mechanical and durability characteristics of the aggregates, followed by the design of mixes to fabricate test specimens. With cement-treated bases, results showed an optimal moisture content of 5% and a dry density of 2.47 g/cm3. Cement-treated bases made with untreated slag aggregate, foundry sand and 4% of cement content showed an unconfined compression strength at seven days of 3.73 MPa. For siderurgical aggregate concrete mixes, compressive strength, modulus of elasticity and flexural strength tests were made. The results showed that the mixes had good mechanical properties but durability properties could be an issue.

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Section: Physical Properties Of Hardened Concretementioning

confidence: 86%

Siderurgical Aggregate Cement-Treated Bases and Concrete Using Foundry Sand

et al. 2021

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“…It penetrates into porous media, transports harmful substances and freezes inside. When a homogeneous porous material has a constant hydraulic potential at its wet surface, liquid can reach the significant heights and depths due to the absorption-ability (Hanžič and Ilić, 2003;De La Cruz et al, 2015). The variation of the water absorption of PCIBs with fly ash ratio is presented in Figure 17 for all the different type of cure condition.…”

Section: Physical Propertiesmentioning

confidence: 99%

Comparison of properties of prefabricated interlocking pavement blocks cured at different conditions

Uygunoğlu

2016

Revista de la Construcción

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In this study, influence of curing condition and fly ash content on properties of pre-fabricated concrete interlocking blocks (PCIBs) were investigated. The blocks were produced with crushed sand stone (fine) and crushed stone (coarse) as aggregate. Also, fly ash was added to mixtures in different ratio by replacing the cement from 0 to 30%. PCIBs were cured in three different types as steam cure, water-pool cure and wet cure. Compressive strength, tensile splitting strength, density, apparent porosity, water absorption by weight and abrasion resistance of PCIBs was determined. When comparing the PCIBs, the use of wet cure results in lower physical and mechanical properties after 28 days. By contrast, waterpool and steam cure gives better result on mechanical and physical properties. Also, replacement of cement with fly ash (from 10% to 20%) has a significant effect in increasing important properties of PCIBs.Keywords: Curing; pavement blocks; prefabricated; strength; mineral admixture. ResumenEn este estudio, la influencia de la curación de la condición y el contenido de cenizas volantes sobre las propiedades del hormigón prefabricado Bloques entrelazados (PCIBs) fueron investigados. Los bloques fueron producidos con arena de piedra triturada (fina) y piedra triturada (grueso) como agregado. Además, cenizas fueron añadidas a las mezclas en diferente relación, reemplazando el cemento desde 0 a 30%. Los PCIBs fueron curados en tres tipos diferentes como: cura de vapor, piscina de agua cura y cura húmeda. Resistencia a la compresión, resistencia a la tracción indirecta, densidad, porosidad aparente, absorción de agua por el peso y la resistencia a la abrasión de PCIBs fue determinadas. Cuando se comparan los PCIBs, el uso de la cura húmeda se traduce en la reducción de propiedades físicas y mecánicas, después de 28 días. Por el contrario, la piscina de agua y vapor cura da mejor resultado en las propiedades mecánicas y físicas. Además, la sustitución de cemento con ceniza volante (del 10% al 20%) tiene un efecto significativo en el aumento de propiedades importantes de PCIBs.Palabras Claves: curado; bloques de pavimento; prefabricado; fuerza; adición mineral.

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“…Zeolite has also been used to improve the performance of concrete (e.g. Janotka & Mojumdar, 2003;de la Cruz, del Campo & Colorado, 2015;Raggiotti, Positieri, Locati, Murra & Marfil, 2015;Ramirez, Chagoyén & Martirena, 2017) and asphalt (e.g. Alonso, Tejeda, Moreno, Rubio & Medel, 2013).…”

Section: Introduction and Description Of The Problemmentioning

confidence: 99%

Experimental study of the fine particles effect on the shear strength of tuff zeolites

Villalobos

Leiva²,

Jerez

et al. 2018

rdlc

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The effect of fine particles on the zeolite shear strength is assessed for possible construction applications. A brief geological description of the zeolite is presented. Three groups of zeolite samples were prepared, namely a coarse material with no fines, a finer material with 3% of silt and a silty material with 15% of clay. Results from standard classification, compaction and compressibility tests are shown and explained. It was found that due to the low specific gravity, low values of density were obtained in compaction tests. Additionally, shear strength tests were performed, resulting in different response in terms of shear stress and horizontal and vertical displacements. The coarse zeolite followed a similar friction-dilation response as in feldspathic and quartz sands. However, addition of 3% of fines reduced significantly the zeolite shear strength. Furthermore, the finest material was tested under two different displacement rates, reflecting also marked differences in shear strength and stiffness.

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Comparative study on porosity and permeability of conventional concrete and concrete with variable proportions of natural zeolite additions

Cited by 8 publications

References 10 publications

Siderurgical Aggregate Cement-Treated Bases and Concrete Using Foundry Sand

Siderurgical Aggregate Cement-Treated Bases and Concrete Using Foundry Sand

Comparison of properties of prefabricated interlocking pavement blocks cured at different conditions

Experimental study of the fine particles effect on the shear strength of tuff zeolites

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