Modulus and Strength of Concretes with Alternative Materials

Jacintho, Ana Elisabete Paganelli Guimarães de Avila; Cavaliere, Ivanny Soares Gomes; Pimentel, Lia Lorena; Forti, Nadia Cazarim da Silva

doi:10.3390/ma13194378

Cited by 7 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, RA decreases the elastic modulus of concrete, whereas slag increases it. According Jacintho et al [123], as the RA replacement ratio increases, the elastic modulus of RAC decreases. With an RA replacement ratio of 50%, the elastic modulus of the concrete decreased by 25.3%.…”

Section: Modulus Of Elasticitymentioning

confidence: 99%

Effect of Recycled Aggregate and Slag as Substitutes for Natural Aggregate and Cement on the Properties of Concrete: A Review

Zhang¹,

Wang²,

Zheng³

et al. 2023

Journal of Renewable Materials

View full text Add to dashboard Cite

Using recycled aggregate (RA) and slag instead of natural aggregate (NA) and cement can reduce greenhouse gas emissions (GHGE) and achieve effective waste recovery. In recent years, RA has been widely used to replace NA in concrete. Every year, several researchers conduct investigations on the mechanical performance and durability of recycled aggregate concrete (RAC). Due to the loose and porous material properties of RA, the mechanical properties and durability of RAC, such as strength, carbonation resistance, permeability resistance and chloride ion penetration resistance, are greatly reduced compared with natural aggregate concrete. In contrast, concrete containing slag instead of NA and cement generally improved the strength of concrete and reduced the internal porosity of materials. Herein, we discuss the effects of RA and slag on the workability, compressive strength, splitting tensile strength, ultrasonic pulse velocity (UPV) value, and elastic modulus of concrete. The relationships between the compressive strength and the splitting tensile strength, UPV value, and elastic modulus are discussed, and the optimal substitution method is proposed. In addition, various equations for calculating the compressive strength of concrete based on performance factors related to the compressive strength are summarized.

show abstract

Section: Modulus Of Elasticitymentioning

confidence: 99%

Effect of Recycled Aggregate and Slag as Substitutes for Natural Aggregate and Cement on the Properties of Concrete: A Review

Zhang¹,

Wang²,

Zheng³

et al. 2023

Journal of Renewable Materials

View full text Add to dashboard Cite

show abstract

“…In certain sectors of ceramics production, the amount of waste may reach up to 30% [ 2 ]. Numerous studies have examined concretes [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ] containing various types of ceramic waste (obtained from construction elements [ 11 , 12 , 13 ], sanitary products [ 14 ], ceramic electric insulators [ 15 ], porcelain pottery [ 16 ], etc.).…”

Section: Introductionmentioning

confidence: 99%

Influence of Varied Waste Ceramic Fillers on the Resistance of Concrete to Freeze–Thaw Cycles

et al. 2021

View full text Add to dashboard Cite

Our research focused on the influence of fillers obtained from crushed waste materials on the selected properties of concrete composites. The used waste materials were sourced from the production of ceramic tiles, ceramic pots, and sanitary ceramics. We evaluated concretes modified with the addition of 10% (by mass of cement) of different fillers. The properties, including the air content in the fresh concrete mix, consistency, compressive strength, and freeze-thaw resistance were examined. The evaluation of the freeze-thaw resistance was carried out by testing the concrete with the direct method for 150 cycles of freezing and thawing. The characteristics of the concrete porosity structure were assessed using automated digital image analysis. Concretes modified by coarse and fine fillers were characterized by different improvements in the mechanical properties and resistance to cycles of freezing and thawing. Composites with the addition of coarse fillers did not show any significant changes in comparison to the control concrete. An automated digital image analysis of the pore distribution in concrete proved to be an effective tool for the assessment of the freeze–thaw resistance of the concretes in question.

show abstract

“…Since the late 20th century, a growing number of studies have focused on the new environmental concrete [3,4]. Over the past two decades, many researches have studied some salient issues for the practical application of RAC: The production process and the compressive strength prediction are studied in the early stage [5][6][7]; the comprehensive mechanical properties and durability properties are studied over the past decades [8][9][10]; from the components and micro-properties of RAC to the macro-performance of RAC, the properties are studied in recent years [11][12][13][14][15][16][17]. Against the common concrete with natural aggregate, the RAC with a similar mix proportion has a weakened mechanical property and a great dispersion of properties, due to the weakened and uncertainty properties of recycled aggregate [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

The Simple Mix Design Method and Confined Behavior Analysis for Recycled Aggregate Concrete

Rong

Shi

et al. 2021

Materials

View full text Add to dashboard Cite

For the environment protection and sustainable development in building construction, waste concrete can be processed into recycled aggregate to mix the recycled aggregate concrete (RAC). However, the existing mix design methods of RAC were complex, and the mechanical properties of RAC were more weakened than ordinary concrete. This paper presents a simple mix design method for RAC, including orthogonal test and single-factor test. Then, in order to study the behavior of confined RAC, this paper presents a comprehensive experimental study on the RAC filled in steel tube (RCFST) specimens and the RAC filled in GFRP tube (RCFST) specimens. The results show that the proposed mix design method can mix different stable strength grades of RAC promptly and efficiently. In addition, the steel tube and GFRP tube can provide a well confining effect on core RAC to improve the mechanical behavior of column. Moreover, the properties of core RAC in steel tube are the same as the common passive confined concrete, and the properties of core RAC in the GFRP tube are the same as the common active confined concrete. The study results can provide reference for other kinds of RAC mixtures as well as be a foundation for theoretical studies on confined RAC.

show abstract

Modulus and Strength of Concretes with Alternative Materials

Cited by 7 publications

References 25 publications

Effect of Recycled Aggregate and Slag as Substitutes for Natural Aggregate and Cement on the Properties of Concrete: A Review

Effect of Recycled Aggregate and Slag as Substitutes for Natural Aggregate and Cement on the Properties of Concrete: A Review

Influence of Varied Waste Ceramic Fillers on the Resistance of Concrete to Freeze–Thaw Cycles

The Simple Mix Design Method and Confined Behavior Analysis for Recycled Aggregate Concrete

Contact Info

Product

Resources

About