Influence of fluidity on mechanical and permeation performances of recycled aggregate mortar

Kumar, G. Santha

doi:10.1016/j.conbuildmat.2019.04.093

Cited by 49 publications

(20 citation statements)

References 17 publications

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“…As shown in Figure 2, the particle size distribution for normalized sand and that of FRCA are very similar. These results are similar to those obtained by other authors [15,16,56,58,77] and in accordance with the limits established by the standard EN 13139/AC:2004 [73]. The aggregate absorption is slightly lower than the EHE-08 limit [52].…”

Section: Fine Aggregatessupporting

confidence: 92%

“…One of the most efficient and economical alternatives without negative environmental effects is the washing and sieving of the RA, which greatly benefits the quality of the concrete and mortars [62][63][64]. But some of previous studies on the incorporation of FRCA in mortars suggest an increase in mechanical resistance and less capillarity due to better compaction and densification [16,58]. However, expected negative effects are greater shrinkage and the presence of cracks.…”

Section: Introductionmentioning

confidence: 99%

“…The material is generated in the same plant, without making alterations in its composition, particle size analysis, quality, etc., and it is used for this investigation. Earlier researchers [20,58] on RA mortar indicated that they modify the physical, chemical, and microstructure property of FRCA in order to achieve their corresponding objective of research. Hence, in this study, to improve the mechanical properties of recycled mortar, FRCA are subjected to several treatment processes to improve its properties.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Mechanical Characteristics of Cement Mortar with Fine Recycled Concrete Aggregates (FRCA)

et al. 2021

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One of the growing demands in concrete manufacture is the availability of natural fine aggregates, which account for 35% to 45% of the total concrete. An alternative method of disposal of fine recycled concrete aggregates (FRCA) generated from demolition and construction waste (C&DW) is their usage in mortar and the development of recycled mortar. The main aim of this research work is to evaluate the viability of incorporating FRCA from urban C&DW for the manufacture of cement-based mortars. Simple processing techniques like washing and sieving are adopted to improve the FRCA quality. Physical and chemical characterization of ingredients is carried out. In total four mixes of 1:3 (cement: sand) mortar with partial replacement of normalized sand with FRCA (0%, 25%, 50%, and 100%) are evaluated for mechanical properties. Water to cement ratio for all four mortar mixes are determined by fixed consistency. Mechanical and physical properties like density, compressive strength, and flexural strength are studied for various curing periods, and the result is that the optimum usage of FRCA is 25% based on a 90-day curing period.

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Section: Fine Aggregatessupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of Mechanical Characteristics of Cement Mortar with Fine Recycled Concrete Aggregates (FRCA)

et al. 2021

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“…The second component, PC2, captured 15% of the total variance, displaying a high negative loading of the fu correlated with both positive Cons and w/p ratio. This behaviour was already reported as a consequence of a more porous microstructure [108,110], due to the increased needs of kneading water that leaves voids after water evaporation [111], fragilizing the microstructure. However, it was unexpected that Cons and w/p would relate so well with the decrease in fu.…”

Section: Of 21mentioning

confidence: 61%

Nanomaterials’ Influence on the Performance of Thermal Insulating Mortars—A Statistical Analysis

et al. 2020

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This research provides a statistical analysis of the mechanical and physical properties of thermal insulating mortars developed in the laboratory and by the industry with and without the incorporation of nanomaterials. This was evaluated by carrying out a uni and bivariate analysis, principal components and factor analysis, cluster analysis, and the application of regression models. The results show that it is possible to find associations between these mortars’ properties, but also how these formulations’ development can be approached in the future to achieve better overall performance. They also show that the use of nanomaterials, namely silica aerogel, significantly improved the mortars’ thermal insulation capabilities, allowing us to obtain mortar formulations with thermal conductivities below the values presented by classic thermal insulating materials. Therefore, with this investigation, other researchers can support their product-development choices when incorporating nanomaterials to reduce mortars’ thermal conductivities, increasing their production efficiency, overall multifunctionality, and sustainability.

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“…Most of the studies use recycled coarse aggregates in the manufacture of concrete [19][20][21][22], the least use recycled fine aggregates [23][24][25][26], other studies use aggregates of different nature [27][28][29][30], although most are aggregates from concrete waste [31][32][33][34]. Other studies focus on the manufacture of mortars [35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Impact of Design Parameters on the Ratio of Compressive to Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate

Martínez‐García

Jagadesh²,

Búrdalo

et al. 2021

Materials

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Most concrete studies are concentrated on mechanical properties especially strength properties either directly or indirectly (fresh and durability properties). Hence, the ratio of split tensile strength to compressive strength plays a vital role in defining the concrete properties. In this review, the impact of design parameters on the strength ratio of various grades of Self-Compacting Concrete (SCC) with recycled aggregate is assessed. The design parameters considered for the study are Water to Cement (W/C) ratio, Water to Binder (W/B) ratio, Total Aggregates to Cement (TA/C) ratio, Fine Aggregate to Coarse Aggregate (FA/CA) ratio, Water to Solid (W/S) ratio in percentage, superplasticizer (SP) content (kg/cu.m), replacement percentage of recycled coarse aggregates (RCA), replacement percentage of recycled fine aggregates (RFA), fresh density and loading area of the specimen. It is observed that the strength ratio of SCC with recycled aggregates is affected by design parameters.

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Influence of fluidity on mechanical and permeation performances of recycled aggregate mortar

Cited by 49 publications

References 17 publications

Evaluation of Mechanical Characteristics of Cement Mortar with Fine Recycled Concrete Aggregates (FRCA)

Evaluation of Mechanical Characteristics of Cement Mortar with Fine Recycled Concrete Aggregates (FRCA)

Nanomaterials’ Influence on the Performance of Thermal Insulating Mortars—A Statistical Analysis

Impact of Design Parameters on the Ratio of Compressive to Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate

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