Mar 01, 2016nbsp018332The present study aims to evaluate the effects of using recycled coarse aggregate, which is generated from construction and demolition waste, on the properties of recycled aggregate concrete. An experimental investigation on the strength characteristics of concrete made with recycled coarse aggregate is presented and discussed in this paper.
The properties of concrete containing recycled coarse aggregate and fly ash. the replacement of natural aggregate by recycled coarse aggregate was in the range of 25 to 100. in addition to this ordinary portland cement was partially replaced by fly ash. from the
Abstract. this paper presents the analysis of the mechanical and durable properties of recycled aggregate concrete rac for using in concrete. the porosity of recycled coarse aggregates is known to influence the fresh and hardened concrete properties and these properties are related to the specific mass of the recycled coarse aggregates, which directly influences the mechanical properties
Ppt on civil engineering on recycled aggregate concrete. files download recycled concrete aggregate powerpoint presentation free one of the major challenges of our present society is the protection of environment some of the important elements in this respect are the reduction of the consumption of energy and . get a quote send message
Previous article in journal. effect of bmp-2 adherent to resorbable sutures on cartilage repair a rat model of xyphoid process. previous article in special issue. properties of a three-component mineral road binder for deep-cold recycling technology. journals. information.
Mar 05, 2015nbsp018332the present research assesses first the suitability of two different mixed recycled aggregates as coarse aggregates for concrete according to the code on structural concrete ehe-08, and subsequently evaluates the effect of their use as a partial 50 replacement of natural coarse aggregate gravel on the mechanical properties compressive ...
Mechanical properties and permeability of pervious concrete made with recycled concrete aggregates shoukai chen, zhengnan zhang, jialin chen, yajing bie. the mix proportion of the pervious concrete is designed based on that the ratio of water-cement is 0.3 and the ratio of sand is 10.
Signicant to e ciently use recycled concrete in practical engineeringespecially in marineenvironment. 2. experimental descriptions.. materials and mix proportions. ordinary portland cement and river sand with neness modulus of . were used in this study. e natural coarse aggregate nca and recycled coarse aggregate rca were obtained from
Crushed recycled concrete can also be used as the dry aggregate for brand new. physico mechanical properties of multi recycled. physico mechanical properties of multi recycled concrete from precast concrete industry. . 2007the use of 100 multi-recycled coarse aggregates does not lead to a fall in the compressive strength of recycled concrete ...
Recycled plastics as coarse aggregate for structural concrete praveen mathew1, shibi varghese2, ... a. m., properties of concrete, 4th edition, addison wesley longman, london, 1997 ... journal and presented a paper on strut-and-tie model in an international conference.
The first task was focused on the evaluation of physical and mechanical properties of the recycled aggregate over 6 months to determine variability in aggregate properties. the second task was directed towards evaluation of concrete portieres produced with fine and coarse recycled aggregate.
A study on the use of construction and demolition waste as coarse aggregate in self-compacting concrete for sustainability s. girish, n. ajay, sasha azimi view abstract mechanical properties and permeability of pervious concrete made with recycled concrete aggregates shoukai chen, zhengnan zhang, jialin chen, yajing bie view abstract
The ratio of fine to coarse aggregate ... properties of concrete. utilization of recycled fibers from post-consumer and industrial waste offer some benefits such as waste reduction and resource ...
Recycled fine aggregate and recycled coarse aggregate. it also compares these properties with natural aggregates. basic changes in all aggregate properties were determined and their effects on concreting work were discussed at length. similarly the properties of recycled aggregate concrete were also determined and explained here.
Crushed tiles as recycled coarse aggregates. concrete mixes with a design compr essive strength of 30mpa are made using recycled aggregates with percentages ranging from 0 to 100 of the total coarse aggregate. their influence on concrete mechanical properties is investigated.
The mechanical properties of recycled aggregate concrete under multiaxial compression were tested by servo-controlled setup tawz-50003000. properties of strength and stressstrain relation were obtained, and the influence factors of stress ratio and recycled coarse aggregate
Nov 15, 2014nbsp018332classification amp properties of recycle aggregate concrete material composition is the basis for classification of recycled concrete aggregate in two main types- 1 crushed concrete 2 mixed material each of these types is divided in a class for bound and a class for unbound use crushin g age bulk specific gravity bulk density absorp tion ...
Preparation of concrete, natural coarse aggregate nca and recycled coarse aggregaterca. crushed hard granite chips of maximum size20mm were used in concrete mixes. the bulk density ofaggregate was 1470 kgm3 and specific gravity was found to be 2.87. recycled coarse aggregate rca was used from recycled aggregate plant at bavla near ahmedabad.
The mechanical properties of conventional concrete and of concrete containig pieces of concrete from demolition waste in the place of conventional coarse aggregate were evaluated and compared.
6. the percentage from recycled coarse aggregate that can be used in concrete is maximum 35 replacement of recycled coarse aggregate. references anonymous. 2008. use of recycled aggregate in construction. cement concrete and aggregate australia. akbari, y.v., arora, n.k., vakil, m.d. 2011. effect on recycled aggregate on concrete properties.
Properties of recycled concrete aggregate. particle size distribution sieve analysis is carried out as per is 2386 for crushed recycled concrete aggregate and natural aggregates. it is found that recycled coarse aggregate are reduced to various sizes during the process of crushing and sieving, which gives the best particle size distribution.
May 14, 2015nbsp018332this 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.
The recycling of concrete is an important means to a sustainable material flow. the limited reuse of recycled aggregates is due to the lower quality of concrete production. various methods have been attempted to minimise the negative effect. in this paper, the effect of adding fly ash as well as incorporating polyethylene terephthalate pet fibres in a concrete mix to mitigate the lower ...
Mechanical properties and itz microstructure of recycled aggregate concrete using carbonated recycled coarse aggregate. journal of wuhan university of
Oct 01, 2015nbsp018332electric arc furnace eaf slag is a by-product of steel production in electric arc furnaces. several studies have tried to demonstrate its suitability in civil engineering application, such as in bituminous mixtures and cement-based materials, due to its good physical, chemical and mineralogical properties. particularly the re-use as coarse aggregate for concrete production has been shown to ...
Complete replacement of natural aggregates with recycled concrete aggregate ran ges from 11 to 33. rca can replace na in the production of both non -structural and structural concrete. patil.et.al. 2013, this study aimed to evaluate physical properties of concrete using recycled coarse aggregate. in this research, concrete waste fr om