scholarly journals Research on Durability of Big Recycled Aggregate Self-Compacting Concrete Beam

2018 ◽  
Vol 322 ◽  
pp. 032002 ◽  
Author(s):  
Shuai Gao ◽  
Xuliang Liu ◽  
Jing Li ◽  
Juan Li ◽  
Chang Wang ◽  
...  
Keyword(s):  
Concrete Beam ◽  
Recycled Aggregate ◽  
Self Compacting Concrete

A REVIEW ON PERFORMANCE OF WASTE MATERIALS IN SELF COMPACTING CONCRETE (SCC)

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Isham Ismail ◽  
Norwati Jamaluddin ◽  
Shahiron Shahidan
Keyword(s):  
Building Materials ◽  
Recycled Aggregate ◽  
Limestone Powder ◽  
Self Compacting Concrete ◽  
Granulated Blast Furnace Slag ◽  
Materials Research ◽  
Alternative Material ◽  
Hardened State ◽  
Furnace Slag ◽  
Recycled Material

Self-compacting concrete (SCC) was first developed in late 80’s inJapan. SCC is well known for its self-consolidation and able to occupy spaces in the formwork without any vibration and become new interesting topic in Construction and Building Materials Research. There were various SCC researches that have been carried out inTurkey,Malaysia,Thailand,Iran,United Kingdom,Algeria, and India.The aim of this review is to summaries the alternative material used in the mix design from 2009 to 2015 through available literature. It hascommon materials such as Limestone Powder (LP), Fly Ash (FA), Silica Fume and Granulated Blast Furnace Slag (GBFS). While there are many alternative or recycled material can be used in producing SCC. This review only focus on waste material fromMarble Powder (MP), Dolomite Powder (DP), Crump Rubber (CR), Recycled Aggregate (RA) and Rise Husk Ash (RHA).Each type of materialshassimilarity effect in fresh and hardened state of SCC. Therefore, this paper will provide significant and useful information to those new to SCC and fellow researchers for future studies on SCC. 

Experimental Research on Main Properties of New Recycled Coarse Aggregate Concrete

2011 ◽  
Vol 261-263 ◽  
pp. 19-23 ◽  
Author(s):  
Da Xing Qian ◽  
Ying Wei Yun ◽  
Ii Young Jang ◽  
Jong Hoe Kim
Keyword(s):  
Concrete Beam ◽  
Coarse Aggregate ◽  
Economic Benefits ◽  
Recycled Concrete ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Secondary Process ◽  
Aggregate Concrete ◽  
Recycled Coarse Aggregate ◽  
Waste Concrete

Recently reutilization of waste concrete becomes one of the hottest issues in civil engineering field throughout the world. However, most of the concerned research focuses on the RCA (recycled coarse aggregate) by simply crushing waste concrete. In this paper shucking technique is developed to secondary process the simply crushing waste concrete for improving the performance of RCA concrete. Test has been done to demonstrate that performances such as strength, elastic modulus et al. of shucking RCA concrete is better than those of common recycled concrete. Simultaneously, beam specimens are made to test the flexural behavior of shucking RCA concrete. Results showed that the deflection of shucking RCA concrete beam is approximately same with that of natural coarse aggregate concrete beam, which solves current problem that recycled aggregate concrete beam has bigger deflection than common concrete beam. The new shucking technique developed in this paper has many advantages to be applied in practical engineering and it has obvious economic benefits and social effect.

Research on Flexural Behavior of Coarse Recycled Aggregate-Filled Plain Concrete Beam

2011 ◽  
Vol 250-253 ◽  
pp. 379-382
Author(s):  
Jing Li ◽  
Lin Fu Wang ◽  
Juan Li ◽  
Xian Feng Qu ◽  
Lin Jang
Keyword(s):  
Concrete Beam ◽  
Concrete Beams ◽  
Plain Concrete ◽  
Recycled Aggregate ◽  
Flexural Behavior ◽  
Recycled Aggregates ◽  
Ordinary Concrete ◽  
Finite Element Software ◽  
Damage Process ◽  
Better Than

In order to study the flexural behavior of coarse recycled aggregate-filled plain concrete beams, two beams were made. The experiment of simply supported beam under concentrated loads is performed, which makes us get the ultimate flexural capacity, midspan deflection and the development of cracks of each beam, and the numerical simulation of the damage process of beams is also carried out using finite element software. The results indicated that the tension property of coarse recycled aggregate-filled plain concrete beam is better than ordinary concrete beam, and some failure forms of bending is similar; the strength of recycled aggregates greatly influences flexural behavior of coarse recycled aggregate-filled plain concrete beam.

Study on the Compression Capacity of the Wall of Recycled Aggregates Self-Compacting Rock-Filled Concrete

2013 ◽  
Vol 438-439 ◽  
pp. 719-723
Author(s):  
Hai Chao Wang ◽  
Yi Long Gao ◽  
Xue Hui An
Keyword(s):  
Bearing Capacity ◽  
Testing Machine ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Wall Material ◽  
Self Compacting Concrete ◽  
Concrete Wall ◽  
Mortar Strength ◽  
Deformation Properties

The goal of the paper is to make good use of solid wastes. The aggregates of ordinary self-compacting concrete are changed for the large size of recycled aggregate, which are randomly put into the mold before self-compacting concrete are poured into to form the new type of concrete specimens, and a freestone aggregate specimen is also made for a comparison. 500 tons of electro-hydraulic servo testing machine is used for the test, to measure the strength of this new wall material, bearing capacity, deformation properties and damage form, etc. Test results show that the average compressive strength of the wall of recycled aggregate rock-filled concrete is 6.42MPa, which is far greater than 2.03MPa specified in standard under same mortar strength. Therefore, the recycled aggregate concrete wall of self-compacting has higher bearing capacity, and can meet the requirment of the project.

scholarly journals Self-Compacting Concrete with Recycled Coarse Aggregate and Manufactured Sand

2019 ◽  
Vol 9 (1) ◽  
pp. 3868-3873
Keyword(s):  
Coarse Aggregate ◽  
Recycled Aggregate ◽  
Fine Aggregate ◽  
Fresh Properties ◽  
Self Compacting Concrete ◽  
Manufactured Sand ◽  
Recycled Coarse Aggregate ◽  
Recycle Coarse Aggregate ◽  
Binder Ratio ◽  
Water Binder Ratio

This article mainly focused on the influence of recycle coarse aggregate and manufactured sand on the properties of self compacting concrete (SCC). The main purpose of this research is reuse of recycled aggregate in SCC and also to reduce use of fine aggregate by replacing manufactured sand. The SCC mixtures were prepared with 0, 25, 50, 75 and 100% replacement of recycle coarse aggregate in natural coarse aggregate and M-Sand in fine aggregate with a Water/Binder ratio of 0.36. Different test covering fresh properties of these SCC mixtures were executed the results were compared with EFNARC guidelines and IS 10262:2019. The feasibility of utilizing recycled aggregate and M-Sand in self compacting concrete has been examined and found that it is suitable for concrete.

scholarly journals Shear Behaviour of Reinforced Self-Compacting Concrete Beams Made with Treated Recycled Aggregate

2019 ◽  
Vol 12 (3) ◽  
Author(s):  
Doaa H. Al-Jasimee ◽  
M.S. Abo Dhaheer
Keyword(s):  
High Strength ◽  
Treatment Method ◽  
Shear Capacity ◽  
Recycled Aggregate ◽  
Shear Behaviour ◽  
Structural Performance ◽  
Self Compacting Concrete ◽  
Ultimate Failure ◽  
Normal Strength ◽  
Cracking Pattern

In this paper, an experimental work was conducted to investigate the possibility of improving the structural performance of reinforced self-compacting concrete (SCC) beams cast with 100% treated and untreated recycled aggregate (RA). RA was first exposed to a simple treatment method to reduce the amount of its adhered mortar and to improve its performance by the impregnation in polyvinyl alcohol (PVA) polymer solution. After completing RA treatments, rectangular simply supported reinforced SCC beams cast with RA, treated recycled aggregate (TRA) as well as normal aggregate (NA), were prepared and tested under two-point loading up to failure. Half of the prepared beams were tested to evaluate the shear behaviour of normal strength (NS) SCC mixes, while the other half was tested for high strength (HS) SCC mixes. The results were evaluated with regards to load deflection response, ultimate failure load, first crack load, and cracking pattern. The main experimental results demonstrated that using treated RA considerably improved the shear capacity of reinforced SCC beams in comparison with that of untreated RA. Based on the ACI 318-14 and Euro codes, the shear strength values showed that the treated RA beams were considered more conservative compared to the RA beams in both strength grades.  

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