recycled coarse aggregates, strength properties of concrete are decreased to some extent. The basic aim of this research was to investigate the effect of using recycled concrete pieces as coarse aggregate on flexural and tensile strength of concrete. The investigation was carried out by carrying
The important factor for minimizing fatigue property of hot mix asphalt (HMA) mixture are, the fractured face count for coarse aggregate. The objective of the study is to evaluate the effect of particle index value on aggregate properties. Asphalt mix with crushed particles produces higher stability values with the increase in particle index value.
Influence of Recycled Coarse Aggregate on some Properties of Fresh and Hardened Concrete . Legae M. Ngwenya. 1, Shodolapo Oluyemi Franklin. 2. 1 . Department of Civil Engineering, University of Botswana, Gaborone, Botswana . 2 Department of Civil Engineering, University of .
This research investigated the influence of the RCA base layers on the HMA pavement performance as compared with CA base layers using laboratory tests on collected base layer materials and field tests on corresponding pavement sections. Field and laboratory testing programs were conducted to investigate RCA and CA base layer materials in which identified test sections at the selected pavement ...
properties such as specific gravity, bulk density, water absorption and fineness modulus were investigated. Coarse Aggregates In this study, natural coarse aggregates obtained from a local supplier were used. The recycled aggregates were obtained from demolished constructional sites were used for present study. The maximum size of aggregate was
The quality and fine aggregate density strongly influence the hardened properties of the concrete. The concrete or mortar mixture can be made more durable, stronger and cheaper if you made the selection of fine aggregate on basis of grading zone, particle shape and surface texture, abrasion and skid resistance and absorption and surface moisture.
AN EXPERIMENTAL STUDY ON UTILIZATION RECYCLED AGGREGATE IN CONCRETE –RECYCLED CONCRETE A N KARTHIK1, B HEMANTH KUMAR2 1M. Tech (Structural Engineering), Department of Civil Engineering, Chadalawada Venkata Subbaiah College of Engineering, Chadalawada Nagar, Renigunta Road, Tirupathi, Chittoor District,, India 517506.
The aim of this research is to control rheological properties of fresh recycled aggregates concrete with fine and coarse recycled aggregates to limit the negative influence of aggregates on mechanical properties of concrete. Key words: Superplasticizer, recycled aggregate, concrete, workability, viscosity, mechanical strength, grading. 1.
influence of recycled aggregate content on variability of compressive strength was also determined. 2. Materials and experimental details Materials The recycled aggregates employed to produce the concrete were taken from a waste recycling area. They were obtained by crushing unknown waste concrete by use of an impact crusher.
on the properties of fresh concrete prepared with recycled aggregates. Concrete mixes with a target compressive strength of 35 MPa are prepared with the use of recycled aggregates at the levels from 0 to of the total coarse aggregate. Keywords: Recycled aggregate. Fresh Properties.
The influence of the following factors on the properties of the recycled concrete was studied: the quality of recycled aggregates, the target quality of the elaborated concrete (compressive strength and workability), the percentage of replacement and the replacement criteria.
This paper reports the durability properties of Self Compacting Concrete (SCC) made with Recycled Concrete Aggregates (RCA) as partial/full replacement of Natural Coarse Aggregates (NCA). The effect of RCA on fresh properties of SCCs was measured using slump flow test, Vfunnel test, L .
The objective of this work was to investigate the effect of commercially produced recycled fine aggregate (RFA) on the compressive, tensile and microstructural behaviour of recycled aggregate concrete (RAC).
Mar 10, 2018· Bhutta et al. have studied the effect of recycled concrete aggregate on the permeability and strength of pervious concrete; Ćosić et al. have revealed the influence of aggregate type (dolomite or steel slag) and size (proportions of 4–8 mm to 8–16 mm aggregate fractions) on the properties of pervious concrete.
Test results of nine recycled aggregate concretes and a control concrete using only natural aggregates are reported. The recycled aggregates used were classified into three different types according to their measured specific gravity and water absorption, namely, RG I for recycled coarse aggregate having a specific gravity of and water absorption of %; RG III for recycled coarse aggregate having a .
Jan 16, 2017· Strength properties of recycled aggregate concrete were enhanced with addition of ceramic powder and ceramic coarse fraction, more than the strength developed in the control concrete. The increased strength was an indication that the interfacial transition zone between the aggregate and blended cement paste enhanced the properties of recycled ...
Jun 06, 2014· In many countries, the incorporation of recycled coarse aggregate (RCA) is a common practice because the maximum contents of RCA are usually limited to approximately 25% of the total coarse aggregate content. The incorporation of higher volumes of RCA is a field of discussion, primarily regarding the durable behavior of concrete.