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On statistical characteristics of the compressive strength ...

On statistical characteristics of the compressive strength of recycled aggregate concrete J. Xiao, J. Li and Ch. Zhang This paper presents a statistical analysis of the compressive strength of recycled aggregate concrete (RAC) with recycled coarse aggregate (RCA) coming from one single source.

Mechanical and Durability Properties of Induction-Furnace ...

For up to 50% of induction furnace slag replacement, both compressive strength and splitting tensile strength increased in recycled aggregate concrete. Further, for all ratios of induction furnace slag replacement, modulus of elasticity increased compared to recycled aggregate concrete.

Microstructure and Mechanical Properties of Recycled ...

The basic properties of recycled aggregate concrete (RAC) including the compressive strength, the elastic modulus, and chloride penetration depth were explicitly investigated. And the microstructure of recycled concrete aggregate (RCA) was revealed to find the seawater corrosion by using scanning electron microscope (SEM).

Evaluation of Concrete Strength Made with Recycled Aggregate

The construction industry consumes enormous quantities of concrete, which subsequently produces large amount of material waste during production and demolishing. As a result, the colossal quantity of concrete rubble is disposed in landfills. This paper, therefore, evaluated the feasibility of reusing waste concrete as recycled aggregate (RA) to produce concrete.

(PDF) On relationships between the mechanical properties ...

tween the splitting tensile strength and the compressive Fig. 2 Relationship between the splitting tensile strength and the compressive strength of RAC Materials and Structures (2006) 39:655–664 659 Fig. 3 Relationship between the flexural strength and the compressive strength of RAC strength of the recycled aggregate concrete It should be ...

Use of Recycled Aggregate Concrete - iosrjournals.org

aggregate as well as for the recycled aggregate. The use of recycled aggregate generally increases the drying shrinkage creep & porosity to water & decreases the compression strength of concrete compared to that of natural aggregate concrete. It is nearly 10-30% as per replacement of aggregate.

Strength and Durability Evaluation of Recycled Aggregate ...

Compressive strength and resistance to chloride ion penetration and carbonation of recycled aggregate concrete with varying amount of fly ash and fine recycled aggregate. Waste Management, 31 (11), 2352–2360. doi: 10.1016/j.wasman.2011.06.014 .

Strength and Constitutive Model of Recycled Concrete under ...

Dec 17, 2018· Abstract. The mechanical properties of recycled concrete under biaxial compression were tested in this study. Five grades of replacement ratio of recycled coarse aggregate (0%, 30%, 50%, 70%, ) and four groups of stress ratio (−0.25:−1, −0.5:−1, −0.75:−1, −1:−1) were designed to evaluate their influence on mechanical properties.The strength and deformation values of ...

Study of recycled concrete aggregate quality and its ...

Study of recycled concrete aggregate quality and its relationship with recycled concrete compressive strength using database analysis • 3. Materiales de Construcción 66 (323), July–September 2016, e089.

Effect of recycled concrete aggregates on strength and ...

This paper investigates the effect of recycled con-crete aggregate (RCA) on the rate of concrete compressive strength and stiffness gain with time and on the bond strength between seven-wire steel prestressing strand and concrete. The use of RCA did not have a significant effect on the rate of concrete compressive strength or stiffness

Experimental Study of Compressive Strength of Recycled ...

From the experimental work Experimental Study of Compressive Strength of Recycled Aggregate Concrete, the following conclusion can be made: Recycling and reuse of building wastes have been found to be an appropriate solution to the problems of dumping hundred of thousands tons of debris accompanied with shortage of natural aggregates.

Probabilistic Conversion of the Compressive Strength of ...

This study appraises compressive strength test data on natural aggregate concrete (NAC) and analogue RAC specimens, intending to: Evaluate the suitability of the cubic to cylindrical NAC conversion factors of Eurocode 2 and EN-206 for RAC with recycled aggregates (RA) sourced from concrete …

Compressive strength prediction of environmentally ...

Along the same challenge, it is also notably advisable to use RAC in non-structural items. The experimental result on the compressive strength indicated that recycled aggregate (RA) with good quality can be used as an alternative for natural aggregate (NA) to produce concrete with mechanical properties comparable to those made with NA .

ANALYSIS OF COMPRESSIVE STRENGTH BETWEEN …

analysis of compressive strength between conventional concrete and recycled coarse aggregate concrete pardeep*; dr. arvind dewangan** *ctm (civil engineering) final semester student, department of civil engineering, hctm technical campus, kaithal, haryana. **associate professor, department of …

Use of RECYCLED AGGREGATES In CONCRETE- A Paradigm Shift

Recycled aggregate posses relatively lower bulk density, crushing and impact values and higher water absorption as compared to natural aggregate. The compressive strength of recycled aggregate concrete is relatively lower up to 15% than natural aggregate concrete.

Design of Concrete Mixtures with Recycled Concrete Aggregates

This paper investigates the workability, compressive strength, and elastic modulus of normal-strength concrete with recycled concrete aggregate (RCA) as replacement for coarse natural aggregate (for example, crushed stone, gravel).

Prediction of Compressive Strength of Recycled Aggregate ...

While the focus of this study is limited to the compressive strength of recycled aggregate concrete, the method used in this study is applicable to a variety of problems in environmental and sustainability research where data-driven approaches are uti-lized. The …

AN INTRODUCTION TO RECYCLED AGGREGATE CONCRETE: …

Recycled aggregate posses relatively lower bulk density, crushing and impact values and higher water absorption as compared to natural aggregate. The compressive strength of recycled aggregate concrete is relatively lower up to 15% than natural aggregate concrete. 1.

Predicting Compressive Strength of Recycled Concrete for ...

recycled aggregate concrete and design optimal mix proportions. Artificial neur-al network (ANN) has good potential to be used as a tool for predicting the compressive strength of recycled aggregate concrete 12]. Analysis was con- [ducted to study the practicability of using the ANN theoretical model as predic-tion tool. The results showed that ...

On statistical characteristics of the compressive strength ...

This paper presents a statistical analysis of the compressive strength of recycled aggregate concrete (RAC) with recycled coarse aggregate (RCA) coming from one single source. The statistical analysis includes the mean value, the standard deviation and the coefficient of variation in addition to the probabilistic distribution. In order to obtain the compressive strength variations, 371 cube ...

Study on Early-Stage Compressive Strength of Recycled ...

Early compressive strength of recycled aggregate concrete is important for the project. Age of recycled aggregate concrete is 3d、7d、14d、21d、28d, in order to study the relation of the early compressive strength with the replacement rate of recycled aggregate, and study Linear regression of 28d compressive strength with cement-water ratio.

Study of recycled concrete aggregate quality and its ...

This work studies the physical and mechanical properties of recycled concrete aggregate (recycled aggregate from concrete waste) and their influence in structural recycled concrete compressive strength. For said purpose, a database has been developed with the experimental results of 152 works selected from over 250 international references.

Effects of Recycled Aggregate on Concrete ... - hindawi.com

Compressive strength decreased with the increase in the recycled aggregate content, and a concrete mix with 40% recycled aggregate exhibited the best strength. Concrete mix with 30% recycled aggregate had the lowest chloride penetration after 2 weeks of saturation and performed better than a concrete mix with natural aggregate.

Crushed Concrete Aggregates - Properties and Uses of ...

Strength variation of concrete produced from recycled aggregate is higher than concrete made from natural aggregate. For the recycled aggregate concrete, it would be necessary to add more cement in concrete made with of recycled aggregate in order to achieve the same workability and compression strength as conventional concrete.

Study on compressive strength of recycled aggregate ...

The researches of Jianzhuang Xiao et al, [9] show that the compressive strength of recycled aggregate concrete is closely related to the replacement rate, water-cement ratio and age, etc., and the ...

Estimation of compressive strength of high- strength ...

Estimation of compressive strength of high-strength concrete with recycled aggregate using non-destructive test and numerical analysis Y. S. Cho1, S. K. Baek1, Y. T. Lee2, S. H. Kim2 and S. U. Hong*2 The purpose of the study is to provide reliable data on high-strength recycled aggregate concrete

Residual compressive and flexural strength of a recycled ...

A recycled aggregate concrete (RAC) with different replacement percentages of recycled coarse aggregates (RCAs) (i.e. 0, 30, 50, 70, ) was investigated experimentally at elevated temperatures. The residual compressive strength as well as the residual flexural strength of the RAC following elevated temperatures was studied and evaluated.

Strength of Recycled Concrete Made From Crushed Concrete ...

Compressive strength of hardened concretes made from recycled concrete coarse aggregates was studied as a function Of the compressive strength of original concretes from which the coarse aggregates were derived Also studied were properties of fresh concretes made from recycled aggregates, gradings of crusher products, properties of recycled ...

Strength and Durability Evaluation of Recycled Aggregate ...

May 14, 2015· This paper discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete.

Compressive Strength Analysis of Concrete made ... -

Compressive Strength Analysis of Concrete made with Demolished Aggregate within acceptable strain limit of Concrete. 1.1 Introduction Concrete used …