recycle concrete strength design

recycle concrete strength design

A strength-based mix design method for recycled

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 of cement varies from 300 kg/m 3 to 500 kg/m 3 and the proportion of recycled coarse aggregate ranges from 0% to 100%, were prepared for the regression analysis of relationships between multiple parameters.

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Influence of recycled concrete aggregates on strength ...

Recycled concrete compressive strength result lower the normal concrete compressive strength in the same initial strength design. The strength value of recycled concrete is

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Recycling of Concrete (Recycling Coarse Aggregate)

2019-7-1  Recycling of Concrete (Recycling Coarse Aggregate) Vinod Kumar Kumawat, Brijesh Kumar, Mayank Kumar Mehra, ... S. W. Tabsh , A. S. Abdelfatah (2006-2008) “Influence of recycled concrete aggregates on strength properties of concrete” [3] J. Xiaoa, J. Lia, Ch. Zhangb Mechanical properties of recycled aggregate ... Concrete Mix Design(CMD ...

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Mix Design and Properties of Recycled Aggregate

2014-8-26  This work is devoted to the study of fresh and hardened properties of concrete containing recycled gravel. Four formulations were studied, the concrete of reference and three concretes containing recycled gravel with 30, 65 and 100 % replacement ratios. All materials were formulated on the basis of S4 class of flowability and a target C35 class of compressive strength according to the standard ...

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Effect of recycled concrete aggregates on strength and ...

The RCA sources included rejected precast concrete, construction demolition concrete, and returned ready-mixed concrete. The use of RCA did not have a significant effect on the rate of concrete compressive strength or stiffness gain. Furthermore, RCA resulted in an effect (decrease or increase) in the strand bond strength that was consistent ...

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(PDF) “Mechanical Properties of Concrete with Recycled ...

2021-9-22  The results show that the 28-day cube and cylinder compressive strength, and the indirect shear strength of recycled aggregate concrete were on the average

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Recycling used engine oil in concrete design mix: An ...

The triple blending concrete with a 2% dosage level exhibited the maximum compressive strength. The concrete containing 5% UEO maintains a level of compressive strength comparable to that of the control sample. The alterations in the workability and compressive strength of concrete are strongly associated with the dispersed state of UEO.

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Use of Recycled Concrete Materials in Base/Subbase ...

2017-12-2  Use of Recycled Concrete Materials in Base/Subbase Applications Mark B. Snyder, Ph.D., P.E. ... design and production of cement-stabilized subbases. 6. Basic Concrete Recycling Options •Commercial recycling yard ... •Excellent strength and erosion resistance

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(PDF) Structural Concrete Prepared with Coarse Recycled ...

Overall, the compressive strength of concrete reduces with the addition of recycled aggregate [22], and the decrement in strength can reach 40 % [23][24][25][26].

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Prediction of Compressive Strength of General-Use

2021-6-7  A new model based on multiple linear regression analysis of the data from this study and other 14 studies from the literature was developed. The model can be used to predict the compressive strength of general-use concrete mixes with recycled aggregate (20–40 MPa) considering both the recycled aggregate content and the curing age of concrete.

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New Mix Design Method for Recycled Concrete Using

2020-5-2  Abstract This study proposes a new mix design method for C30 recycled concrete using recycled aggregate crushed from different strength source concrete (SC). The dosages of cement, water, sand, and coarse recycled concrete aggregate (CRCA) are the same as the corresponding components in natural concrete, but the CRCA should be pre-wetted before casting. Its weighted mean strength

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Statistical Approach for the Design of Structural Self ...

The compressive strength of recycled concrete is acknowledged to be largely conditioned by the incorporation ratio of Recycled Concrete Aggregate (RCA), although that ratio needs to be carefully assessed to optimize the design of structural applications. In this study, Self-Compacting Concrete (SCC) mixes containing 100% coarse RCA and variable amounts, between 0% and 100%, of fine RCA were ...

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Mix Design and Properties of Recycled Aggregate

2014-8-26  This work is devoted to the study of fresh and hardened properties of concrete containing recycled gravel. Four formulations were studied, the concrete of reference and three concretes containing recycled gravel with 30, 65 and 100 % replacement ratios. All materials were formulated on the basis of S4 class of flowability and a target C35 class of compressive strength according to the standard ...

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Pore structure and strength of waste fiber recycled

2017-11-28  concrete than the age, and the strength performance of the recycled concrete came from different sources will be lower than that of the single source. Therefore, the separate recov-ery of different-strength abandoned concrete can effectively improve the strength of recycled coarse aggregates and expand the application scope of recycled concrete.

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Strength and drift capacity of squat recycled concrete ...

2015-10-1  The mix proportions per m 3 of recycled concrete were 170 kg water, 290 kg cement, 392 kg natural coarse aggregate, 308 kg natural fine aggregate, 588 kg recycled coarse aggregate, 462 kg recycled fine aggregate, 91 kg flay ash, 82 kg mineral powder, and 18.5 kg pumping agent. The recycled aggregate was produced properly and supplied by a local ...

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Effect of recycled concrete aggregates on strength and ...

The RCA sources included rejected precast concrete, construction demolition concrete, and returned ready-mixed concrete. The use of RCA did not have a significant effect on the rate of concrete compressive strength or stiffness gain. Furthermore, RCA resulted in an effect (decrease or increase) in the strand bond strength that was consistent ...

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Use of recycled concrete aggregate in high-strength

Materials and Structures/Matiaux et Constructions, Vol. 33, November 2000, pp 574-580 Use of recycled concrete aggregate in high-strength concrete M. C. Limbachiya, T. Leelawat and R. K. Dhir

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Use of Recycled Concrete Materials in Base/Subbase ...

2017-12-2  Use of Recycled Concrete Materials in Base/Subbase Applications Mark B. Snyder, Ph.D., P.E. ... design and production of cement-stabilized subbases. 6. Basic Concrete Recycling Options •Commercial recycling yard ... •Excellent strength and erosion resistance

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Using Recycled Concrete Aggregate Specify Concrete

2019-2-28  Recycled concrete aggregate presents numerous benefits: Increased protection from seepage. Reduced costs, since it doesn’t need to be mined. Reduced environmental impact, more appealing to governments and customers. Preserves

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New Mix Design Method for Recycled Concrete Using

2020-5-2  Abstract This study proposes a new mix design method for C30 recycled concrete using recycled aggregate crushed from different strength source concrete (SC). The dosages of cement, water, sand, and coarse recycled concrete aggregate (CRCA) are the same as the corresponding components in natural concrete, but the CRCA should be pre-wetted before casting. Its weighted mean strength

Read More
Mix Design and Properties of Recycled Aggregate

2014-8-26  This work is devoted to the study of fresh and hardened properties of concrete containing recycled gravel. Four formulations were studied, the concrete of reference and three concretes containing recycled gravel with 30, 65 and 100 % replacement ratios. All materials were formulated on the basis of S4 class of flowability and a target C35 class of compressive strength according to the standard ...

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Pore structure and strength of waste fiber recycled

2017-11-28  concrete than the age, and the strength performance of the recycled concrete came from different sources will be lower than that of the single source. Therefore, the separate recov-ery of different-strength abandoned concrete can effectively improve the strength of recycled coarse aggregates and expand the application scope of recycled concrete.

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Strengths of recycled aggregate concrete made using field ...

1996-3-1  These factors also influence the effect of water-cement ratio, aggregate top size, and dry mixing on the strength characteristics of recycled aggregate concrete. It is also shown that the conventional relationships between splitting tensile, flexural, and compressive strengths may have to be modified for recycled aggregate concrete.

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Effect of recycled concrete aggregates on strength and ...

The RCA sources included rejected precast concrete, construction demolition concrete, and returned ready-mixed concrete. The use of RCA did not have a significant effect on the rate of concrete compressive strength or stiffness gain. Furthermore, RCA resulted in an effect (decrease or increase) in the strand bond strength that was consistent ...

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Mechanical Behavior of Recycled Fine Aggregate Concrete ...

2019-12-2  This study investigated the mechanical behavior of normal strength (NS) and high strength (HS) concrete containing recycled fine aggregates (RFAs). A high slump mixing design was employed, which may be potentially used as filled structural concrete. The compressive strength, tensile strength, and elastic modulus were measured according to the RFA replacement ratio and curing time.

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Preparation and properties of high-strength recycled ...

2014-5-7  Concrete specimens with design strengths of 50, 60 and 70 MPa were tested for abrasion resistance on an apparatus described in the literature and further to the specifications in Chinese standard DL/T 5150-2001 Hydraulic concrete experiment rules . Design strength is graphed against abrasion depth in Figure 5.

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Performance of Recycled Aggregate Concrete

2009-9-1  compressive strength of recycled aggregate concrete with 60 % recycled aggregate, is about 76 % of natural aggregate concrete. The compressive strength increases as the percent of recycle aggregate in concrete mixes decreases. As the percent of Gaza sand increases the compressive strength of recycled aggregate concrete decreases for the same

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Using Recycled Concrete Aggregate Specify Concrete

2019-2-28  Recycled concrete aggregate presents numerous benefits: Increased protection from seepage. Reduced costs, since it doesn’t need to be mined. Reduced environmental impact, more appealing to governments and customers. Preserves natural resources such as gravel, water, coal, and oil. Reduced space wastage in landfills.

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Ways to Recycle and Reuse Concrete

2019-1-7  Concrete is recycled by using industrial crushing equipment with jaws and large impactors. After the concrete is broken up, it is usually run through a secondary impactor and is then screened to remove dirt and particles and to separate the large

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