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A Comparative Analysis of Modulus of Rupture and Splitting Tensile Strength of Recycled Aggregate Concrete Akinkurolere Olufunke Olanike Department of Civil Engineering, Ekiti State University, Ado-Ekiti, Nigeria. Abstract: - In this experimental investigation, an attempt is made to report the comparative analysis of the

compressive strength of recycled aggregate concrete with various percentage of recycled aggregate, as coarse aggregate in, >>Chat Online Now Concrete Compression Analysis - Santa Rosa, 【More】 The Effect of Test Cylinder Size on Concrete Strength

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.

Compressive Strength Analysis On Recycled Aggregate Concrete. Compressive strength and resistance to chloride ion penetration and Jul 23, 2011 Compressive strength and resistance to chloride ion penetration and carbonation of . Inquiry; High-Strength Structural Concrete with Recycled,

With the increase in the use of recycled aggregate concrete (RAC), it is necessary to clearly understand its behavior and characteristics. In this paper, experimental study on compressive strength of RAC with same water/cement ratio is conducted.

Modelling Compressive Strength of Recycled Aggregate Concrete Using Neural Networks and Regression ... 28 day compressive strength of recycled concrete aggregate. The maximum and minimum values of input and output parameters are shown in Table 1. A total of

High-Strength Structural Concrete with Recycled Aggregates A Dissertation Submitted By Nelson, Shing Chai NGO ... decreasing in compressive strength, tensile strength and modulus of elasticity as the ... 5.3 Compacting Factor Test Result and Analysis 5-3 5.4 Compression Test Result and Analysis 5-5 5.5 Indirect Tensile Test Result and Analysis ...

aggregate and also "recycle aggregate." Decision analysis found that the characteristics of aggregates used are different than normal aggregate. Control mixture showed better results compared with the mixture of using recycled aggregate. Research shows that more recycled aggregate is used, the compressive. strength of concrete decreases.

It was found that the statistical characteristics of the compressive strength of recycled aggregate concrete do not differ very much from those of normal concrete (NC) with similar strength ...

Abstract. This research was conducted with the use of recycled aggregate as modification. In terms of the use of recycled aggregate, the percentage of recycled aggregate should be determined because the strength of concrete would not be obtained by the high percentage of recycled aggregate.The scope of study is about comparison between recycle coarse aggregate and natural aggregate in …

aggregates were used in the production of the concrete tested, the same compressive strength being obtained in all four mixes. The microstructure of recycled aggregate concrete was analysed using ...

the compressive strength of hardened concrete made with recycled concrete aggregates was lower as compare to the compressive strength of fresh concrete made with natural aggregates which is based on experimental work. The tests were conducted by replacing the recycled concrete aggregates by 0,25,50,75 and 100 % replacement of natural aggregates.

Prediction of Compressive Strength of Recycled Aggregate Concrete using LASSO Arif Cekic1* and Jale Tezcan2 1Intertek-PSI, ... was ranked. Analysis results indicate that the water-to-cement ratio is the strongest predictor of the compressive strength, followed by temperature, replacement ... strength of recycled aggregate concrete, the method ...

In order to study the basic mechanical properties of basalt fiber reinforced recycled aggregate concrete, the concrete mix ratio, the length and the volume mixing ratio of chopped basalt fiber yarn are designed for changing factors. A total of 324 specimens have been completed for this investigation.

the rate of concrete compressive strength or stiffness gain, but it did have a small effect on the strand bond strength. ... Effect of recycled concrete aggregates on strength and stiffness gain of concrete and on bond strength of steel prestressing strand Michael R. Brandes and Yahya C. Kurama.

compressive strength formula of recycled concrete block masonry also requires a lot of valid test data, which should be paid attention to in practical application. 3.3 Analysis of stress - …

than that of corresponding recycled aggregate concrete. The results of the study showed that recycled concrete aggregate can potentially replace completely natural aggregate in the production of both non-structural and structural concrete. Keywords: compressive strength, coarse aggregate, concrete, natural aggregate, recycled concrete aggregate.

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 ...

Recycled Aggregates - The Portland Cement Association. The states that do use recycled concrete aggregate (RCA) in new concrete report that ... It involves breaking, removing, and crushing existing concrete into a material with a ... grade concrete soil-cement pavement bases lean-concrete or econo-crete ... workability, compressive strength, and shrinkage as zenith aggregates.

When recycled aggregates are used in a concrete mix the concrete is termed as recycled aggregate concrete (RAC). Several researches have studied the influence of RA on concrete properties such as compressive strength, tensile strength, etc. ( Ajdukiewiez and Kliszczewicz, 2002, Hansen and Narud, 1983, Tsung et al., 2006, Ryu, 2002 ).

The inﬂuence of the use of recycled aggregates on the compressive strength of concrete: a review R.V. Silvaa, ... relating to the effect on concrete compressive strength of the various aspects related to the use of recycled aggregates ... to a statistical analysis, the results of which allowed producing a model for predict-

May 14, 2015· 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 .

caused by concrete waste, Recycled Aggregate Concrete (RAC) technology is considered as one of the main candidates for ecolog-ical concrete development [2]. However, the variability in the characteristics of RA and RAC preventsthe use of RA further.For example,the use of RCAcan lead to reduction of up to 40% in compressive strength [1,3]. Low

Artificial neural network (ANN) has good potential to be used as a tool for predicting the compressive strength of recycled aggregate concrete [12] . Analysis was conducted to study the practicability of using the ANN theoretical model as prediction tool.

Modulus of elasticity of the recycled aggregates concrete. E cRC. Modulus of elasticity of the reference concrete. FA. Percentage of fine aggregates in the mix. f c7RAC. 7-day compressive strength of the recycled aggregates concrete. f c7RC. 7-day compressive strength of the reference concrete. f cRAC. 28-day compressive strength of the ...

Recycled aggregate concrete (RAC) methodology for estimating its ... absorption), primary and recycled, coarse and fine, and alternatively the 7-day compressive strength of concrete made with those aggregates. The methodology is validated, based on a graphical analysis of the most important properties of hardened ... recycled aggregate concrete ...

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.

Primary concrete of pebble coarse aggregate were used as the source of recycled aggregate concrete for pebble recycled coarse aggregate. Replacement rate of recycled aggregate for change parameter, 99 specimens were designed. The prism compressive strength, cube compressive strength and flexural strength were tested and achieved. The test results show that damage process and form of …

the size effect on compressive strength for recycled concrete (RC) at meso-level. The recycled concrete is taken as five-phase composites consisting of natural coarse aggregate, new mortar, new interfacial transition zone (ITZ), old mortar and old ITZ on meso-level. The random aggregate model is used to simulate the meso-structure of recycled ...

Jun 30, 2018· The compressive strength of recycled concrete is closely related to these factors such as sand rate, water-cement ratio, aggregate grade, aggregate type and substitution rate, mineral fine admixture variety and dosage, .

Compressive Performance of Recycled Aggregate Mortar Thomas Nicholas II ... A second study using recycled concrete aggregate from a demolished airport also found that as the percentage of recycled aggregates is increased, the ... compressive strength of the mortar, although in some cases an adequate bond is made ...

Evaluation of Recycled Concrete . WA-RD 826.1 . EVALUATION OF RECYCLED CONCRETE AS . AGGREGATE IN NEW CONCRETE PAVEMENTS . By . Haifang Wen David I. McLean . Assistant Professor Professor . Spencer R. Boyle, Timothy C. Spry and Danny G. Mjelde . Former Graduate Students . Washington State Transportation Center (TRAC) Washington State University

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