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Orthogonal experimental design for compressive strength of
Arun et al. [21] conducted a comparative analysis between NAC and RAC, and concluded that reducing the water-to-binder ratio (W/B) could improve the compressive strength of RAC. In addition, the use of high-strength concrete waste as recycled aggregate can
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Strength and durability of concrete containing recycled concrete ...
2018.9.1 Strength and durability properties of concrete made with recycled concrete aggregates (RCA) were studied by an experimental investigation. The variables
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Comprehensive study on the most sustainable concrete design made
2021.3.1 With the intention of using most of the construction and demolition wastes (CDW) back to the construction sector, recycled products such as recycled aggregates
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New Mix Design Method for Recycled Concrete Using Mixed
2020.5.2 This study proposes a new mix design method for C30 recycled concrete using recycled aggregate crushed from different strength source concrete (SC). The
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Recycled concrete for structural applications - ScienceDirect
2023.1.1 Four resistance mechanisms commonly encountered in structural design (bond strength, bending resistance, and shear resistance of elements either without or
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A strength-based mix design method for recycled aggregate concrete
2021.4.26 This paper puts forward a strength-based mix design method for recycled aggregate concrete using a modified empirical formula. A total of 30 mixes, the amount
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Mix Design and Properties of Recycled Aggregate Concretes ...
2014.8.26 In this paper, a natural aggregates concrete, NAC, and three recycled concrete aggregates RAC30, RAC65 and RAC100 were prepared on the basis of an
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A strength-based mix design method for recycled aggregate concrete
2021.4.1 This paper puts forward a strength-based mix design method for recycled aggregate concrete using a modified empirical formula.
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Incorporating coarse and fine recycled aggregates into concrete
2023.11.6 The recycled concrete with substitution ratio up to 50% RCA by the total NA and 300 kg/m3 cement content produced concrete up to 27 MPa compressive
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Strength and durability of concrete containing recycled concrete ...
2018.9.1 Strength and durability properties of concrete made with recycled concrete aggregates (RCA) were studied by an experimental investigation. The variables
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Influence of Fine Recycled Concrete Powder on
2021.3.12 This paper aims to investigate the effect of fine recycled concrete powder (FRCP) on the strength of self-compacting concrete (SCC). For this purpose, a numerical artificial neural network (ANN) model was
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Life cycle assessment of sustainable concrete with recycled
2023.6.1 Section snippets Sustainable concrete with RA and SCMs. A review of current relevant literature reveals that concrete incorporating RA and SCMs are frequently explored in both academia and industry, with visible and cost-effective benefits to the technical, environmental, and economic behavior of the industry (Illankoon et al., 2018,
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Recycled Concrete Aggregates: A Review International
2013.3.29 This paper discusses the properties of RCA, the effects of RCA use on concrete material properties, and the large scale impact of RCA on structural members. The review study yielded the following findings in regards to concrete material properties: (1) replacing NA in concrete with RCA decreases the compressive strength, but yields
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Effect of recycled steel fibers on the mechanical strength and
2022.6.1 Similar to high-strength concrete families, CPB manufactured for heavy traffic are also brittle owing to their dense microstructure. ... Short sisal fiber reinforced recycled concrete block for one-way precast concrete slabs. Constr. Build. Mater., 187 (2018), pp. 620-634. ... Guide to Design with Fiber-Reinforced Concrete, 2016. Google
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Split Tensile Strength Prediction of Recycled Aggregate
2022.6.17 Sustainable concrete is gaining in popularity as a result of research into waste materials, such as recycled aggregate (RA). This strategy not only protects the environment, but also meets the demand for concrete materials. Using advanced artificial intelligence (AI) approaches, this study anticipates the split tensile strength (STS) of
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Research on the Performance of Recycled-Straw Insulating Concrete
2023.6.15 The compressive strength of the recycled-straw insulating concrete with the optimal ratio was found to be 30.93 MPa, and the thermal conductivity was 0.5051 W/(mK). ... Mix proportion design of recycled-straw insulating concrete in orthogonal test. Number Orthogonal Test Cement (kg/m 3) Fine Aggregate (kg/m 3) Natural Coarse
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Recycled aggregate concretes – A state-of-the-art from the ...
2020.10.10 The enhancement of the mechanical properties of recycled aggregate concrete (RAC) has long piqued the interest of researchers. Based on a brief review of the existing methods for improving the mechanical properties of RAC, this paper proposed a new composite column—steel fiber-reinforced recycled concrete-filled GFRP tube (SF
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Potential of Repurposing Recycled Concrete for Road Paving:
2023.2.17 Concrete can be recycled after certain processing technologies for use in pavement engineering but the flexural strength (FS) is difficult to predict accurately in the design process. This study proposes a novel systematic and evolved approach to estimate the FS of recycled concrete. The proposed methods are conducted based on the random
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Shear Response of Recycled Aggregates Concrete Deep
2022.1.14 Replacement of natural aggregates (NAs) with recycled concrete aggregates (RCAs) in complex reinforced concrete (RC) structural elements, such as deep beams with openings, supports environmental sustainability in the construction industry. This research investigates the shear response of RC deep beams with openings made with
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Environment-friendly recycled steel fibre reinforced concrete
2022.4.11 Sustainability of recycled fibre reinforced concrete. As the material with huge recycling potential, the waste tire has been paid attention to its potential contribution to the environment and economy. The RSF is a recycled material recovered from waste tires. In order to identify the sources of RSF, the structure of the tire is shown in Fig. 22.
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Influence of mixed recycled aggregate on the physical –
2014.4.1 This article discusses the findings of a feasibility study on the partial replacement of natural coarse aggregate with a poor quality recycled aggregate from construction and demolition waste in the manufacture of concrete of 30 MPa strength grade. The mixed recycled aggregate used had a high asphalt and floating material content.
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(PDF) Performance of composite sand cement
2018.4.1 In this way the largest reduction in the 28-day compressive strength was found to be only 7.2% and 9.6% for C25 and C50 recycled concrete when the NCA was replaced 100% by RCA, and 11% and 13%
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Optimization and Prediction of Concrete with
2022.8.19 Construction recycled material is crucial for protecting natural resources and promoting sustainable human development in a rapidly industrializing world. Many administrations worldwide accepted
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Mechanical and Durability Properties of Cement-Stabilized Recycled ...
2020.8.1 This research investigates the effect of using recycled concrete aggregate (RCA) as a partial replacement of natural aggregate (NA) on the mechanical and durability-related properties of a cement-stabilized recycled concrete aggregate (CSR) mixture. In this case, mixtures were prepared with 0%, 40%, 70%, and 100% (by weight) RCA to replace
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Using recycled coarse aggregate and ceramic waste to
Cement. Ordinary Portland Cement (OPC) Type I was used to prepare all the mixes. The utilised cement complies with the BS EN 197–1:2011(Citation 2011) standard for class 42.5 N and is produced by the UltraTech Cement Factory in the UAE.Table 1 displays the chemical composition of the cement. In addition, Table 2 shows the properties of the
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Mechanical Properties of Concrete Using Recycled Aggregates Obtained ...
2021.3.10 The M2 (50% replacement of fine natural aggregate) and M4 (50% replacement of natural coarse aggregate by recycling) mixtures were selected based on results for flexural (modulus of rupture) and compressive strengths of the concrete mixtures concerning the behavior of the reference mixture and the established design strengths.
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Orthogonal experimental design for compressive strength of recycled ...
Refer to Chinese regulations “Concrete Mix Design General Rules” (JGJ55-2011) [40], the strength class is less than C60 and the formulation strength is calculated as follows: (4) f cu, 0 ⩾ f cu, k + 1.645 ∂ where f cu, 0 and f cu,k are the normalized concrete compressive strength and cube compressive strength values of concrete, in MPa ...
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Frontiers Seismic Performance of Recycled Concrete Filled
2020.12.16 A straight seam circular steel tube and typical ordinary Portland cement (C) with a 28 days nominal compression strength of 42.5 MPa were used in addition to river sand (S), urban water (W), natural coarse aggregate (NCA), and RCA. RCA and NCA are continuous gradations of rubble with maximum diameter of 20 mm.
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Evaluation of the shear strength design equations for slender
2022.11.30 Evaluation of the shear strength design equations for slender and non-slender RC beams admixtured with recycled concrete aggregate without web reinforcement M. V. S. S. Sastri; M. V. S. S. Sastri a) 1. Dept. of Civil Engineering, Vasavi College of Engineering (A) ... Shear strength of recycled aggregate concrete beams containing
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Predictive Modeling of Recycled Aggregate Concrete Beam Shear Strength ...
2022.12.28 Construction and demolition waste (CDW) together with the pollution caused by the production of new concrete are increasingly becoming a burden on the environment. An appealing strategy from both an ecological and a financial point of view is to use construction and demolition waste in the production of recycled aggregate concrete
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