Nano Silica and Metakaolin Effects on the Behavior of Concrete Containing Rubber Crumbs

Chalangaran, Navid; Farzampour, Alireza; Paslar, Nima

doi:10.3390/civileng1030017

Cited by 59 publications

(44 citation statements)

References 14 publications

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“…It is composed of binder and aggregates with a suitable quantity of water [1,2]. The use of concrete is measured as the 2nd most consumed component after water, and today, construction of any structure is deemed impossible without the use of concrete [3][4][5][6][7][8][9][10]. Such a wide acceptance of concrete as a construction material is due to its durability, availability, and strength properties [1,11].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Engineering Properties of Cement Concrete Reinforced with Nylon and Jute Fibers

et al. 2021

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The use of synthetic fiber and natural fiber for concrete production has been continuously investigated. Most of the materials have become popular for their higher flexibility, durability, and strength. However, the current study explores the engineering properties of cement concrete reinforced with nylon and jute fibers together. Varying proportions and lengths of nylon and jute fibers were utilized in the concrete mixture. Hence, the combined effects of nylon and jute fibers on workability, density, water absorption, compressive, tensile, flexural strength, and drying shrinkage of concrete were investigated. Results showed that concrete with 1% of nylon and jute fibers together by the volume fraction showed a maximum enhancement of the compressive strength, split tensile strength, and flexural strength by 11.71%, 14.10%, and 11.04%, respectively, compared to the control mix of concrete at 90 days. However, the water absorption of concrete increased with increasing nylon and jute fiber contents. The drying shrinkage of concrete decreased with the addition of nylon and jute fibers together after 90 days. Thus, the sparing application of both nylon and jute fiber as discussed in this study can be adopted for concrete production.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Engineering Properties of Cement Concrete Reinforced with Nylon and Jute Fibers

et al. 2021

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“…Fifteen percentages of fine- and coarse-grained crumbs substitutions improved sound transmission losses by 190% and 228%, respectively. They also reported [ 7 ] that the ultimate compressive strength, the tensile strength, and the modulus of elasticity of the concrete with rubber crumbs are reduced. The negative impact of the rubber crumbs was reduced by using an optimum percentage of nanosilica and metakaolin additives.…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, researchers are motivated to reduce the impact of construction materials on the environment and enhance the mechanical properties of construction materials. This has led to the use of waste materials (recycled aggregate and rubber) and cement kiln dust (CKD) in the manufacture of concrete and studies on how these materials affect its behavior [ 2 , 3 , 4 , 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Performance of Plain Concrete and Cement Blocks with Cement Partially Replaced by Cement Kiln Dust

2021

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The growth of the construction industry has led to the greater consumption of natural resources, which has a direct or indirect negative impact on the environment. To mitigate this, recycled or waste materials are being used as a partial substitute in the manufacture of concrete. Among these waste materials is cement kiln dust (CKD), which is produced during cement production. This study investigated the potential benefits of replacing part of the cement with CKD in two construction applications, i.e., plain concrete and cement blocks. This reflects positively on cost, energy, and the environment, since putting CKD in a landfill damages agricultural soil and plant respiration. In this study, an experimental program was carried out to study how replacing various percentages of ordinary portland cement (OPC) with CKD affected the compressive strengths, the tensile strengths, and the air contents of concrete and cement blocks. Although the results showed that the compressive and tensile strengths decreased as the amount of CKD increased, the air content of the concrete increased, which showed that 5% CKD was suitable for such applications. The results were used to propose two equations that approximate the concrete and cement block compressive strengths according to the CKD replacement percentage.

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“…During the hardening stage for cement forming, cracks and voids are easily left in the structure [3]; these characteristics reduce the bearing capacity of the cement and accelerate the erosion effect of corrosive media, thus reducing the service life of the cement structure. Nowadays, the performance of cement has been improved by many efforts such as adjusting the cement mortars ratio, optimizing the aggregate gradation, and adding reinforcements [4][5][6][7]. However, these do not change the structure of cement hydration products, and the problems of high brittleness and cracking of the cement mortars still exist.…”

Section: Introductionmentioning

confidence: 99%

Effect of High-Dispersible Graphene on the Strength and Durability of Cement Mortars

Zhang

Wang

et al. 2021

Materials

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Graphene’s outstanding properties make it a potential material for reinforced cementitious composites. However, its shortcomings, such as easy agglomeration and poor dispersion, severely restrict its application in cementitious materials. In this paper, a highly dispersible graphene (TiO2-RGO) with better dispersibility compared with graphene oxide (GO) is obtained through improvement of the graphene preparation method. In this study, both GO and TiO2-RGO can improve the pore size distribution of cement mortars. According to the results of the mercury intrusion porosity (MIP) test, the porosity of cement mortar mixed with GO and TiO2-RGO was reduced by 26% and 40%, respectively, relative to ordinary cement mortar specimens. However, the TiO2-RGO cement mortars showed better pore size distribution and porosity than GO cement mortars. Comparative tests on the strength and durability of ordinary cement mortars, GO cement mortars, and TiO2-RGO cement mortars were conducted, and it was found that with the same amount of TiO2-RGO and GO, the TiO2-RGO cement mortars have nearly twice the strength of GO cement mortars. In addition, it has far higher durability, such as impermeability and chloride ion penetration resistance, than GO cement mortars. These results indicate that TiO2-RGO prepared by titanium dioxide (TiO2) intercalation can better improve the strength and durability performance of cement mortars compared to GO.

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Nano Silica and Metakaolin Effects on the Behavior of Concrete Containing Rubber Crumbs

Cited by 59 publications

References 14 publications

Experimental Study on Engineering Properties of Cement Concrete Reinforced with Nylon and Jute Fibers

Experimental Study on Engineering Properties of Cement Concrete Reinforced with Nylon and Jute Fibers

Performance of Plain Concrete and Cement Blocks with Cement Partially Replaced by Cement Kiln Dust

Effect of High-Dispersible Graphene on the Strength and Durability of Cement Mortars

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