Proposed mix design method for producing sustainable self compacting heat cured recycled aggregate concrete and its microstructural investigation

Rajhans, Puja; Chand, Gaurav; Kisku, Nishikant; Panda, Sarat Kumar; Nayak, Sanket

doi:10.1016/j.conbuildmat.2019.05.149

Cited by 44 publications

(11 citation statements)

References 34 publications

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“…SCC was first developed in Japan in the late 1980s as a result of efforts to develop more durable concrete [ 4 ]. SCC is highly fluid and can be spread over the desired section under its own weight, achieving fullness in the section without the need for internal or external vibration [ 5 ]. In addition to the above-mentioned characteristics, SCC is required to resist either blockage or clogging between obstacles when flowing, as well as segregation [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Rheological and Durability Properties of Self-Compacting Concrete Produced Using Marble Dust and Blast Furnace Slag

Karakurt

Dumangöz

2022

Materials

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Self-compacting concrete (SCC) is a special, highly fluid type of concrete that is produced using chemical additives. It is easier to pour and reduces defects arising from workability. Waste marble dust is generated during the production of marble using different methods, or during the cutting of marble in processing plants; however, the uncontrolled disposal of waste marble dust in nature is associated with some environmental problems. Cement and concrete technology is a field with potential for the utilization of these large amounts of waste. The present study explores the use of marble dust (MD) (an industrial waste generated in abundance around the province of Bilecik) and granulated blast furnace slag (GBFS) (another industrial waste product) in the production of SCC. In this study, MD and GBFS are used as fine materials in SCC mixtures, and the rheological and workability properties and other hardened concrete properties of the produced SCC specimens are tested. Additional tests are conducted to identify the durability of the specimens to sulfate attack, as well as their freeze–thaw and abrasion resistance, followed by microstructure tests to identify the effects of MD and GBFS on bond structure. The late-age performances of MD and GBFS were then examined based on the results of the durability tests. The presented results revealed improvements in the fresh and hardened properties of SCC produced using MD and GBFS.

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Section: Introductionmentioning

confidence: 99%

Rheological and Durability Properties of Self-Compacting Concrete Produced Using Marble Dust and Blast Furnace Slag

Karakurt

Dumangöz

2022

Materials

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“…Figure 5 shows the relationship between the residual mortar content (RMC) on RA and the density and water absorption of RA investigated in other studies. There may be differences depending on production processes and the impurities contained in aggregates, in general, as the RMC increases, the specific gravity decreases and the water absorption rate tends to increase [3,13,33,35,36,[38][39][40][41][42][43][44].…”

Section: Recycled Aggregatementioning

confidence: 99%

“…Rajhans et al [33] analysed the property difference by applying the two stage mixing approach (TSMA) [73], which divides the input materials and the order of input during the concrete mixing process. In this way, compressive strength at twenty-eight days was improved by 9.5% in comparison to the conventional aggregate-cement-water mixture.…”

Section: R Rmc V Sg Sgmentioning

confidence: 99%

The equivalent mortar volume method in the manufacturing of recycled aggregate concrete

Kim¹,

Sadowski²

2019

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many studies have observed that the mechanical properties of concrete made of recycled aggregate are worse than for concrete made of natural aggregate; this is mainly due to the mortar that is attached to the recycled aggregate. In literature, an equivalent mortar volume method in the manufacturing of recycled aggregate concrete has been proposed. This method treats the attached mortar as new mortar. The application of this method can reduce the use of natural materials while maintaining mechanical properties and eliminate the additional processes required for the production of recycled aggregates. The aim of this paper is to briefly describe the recent application of this method, present gaps in current research and anticipated directions for further research.

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“…One way to cover the voids or pores between the aggregate particles is to add a filler [4]. [5] conducted an experimental study in which the recycled aggregate contains 25 to 45 % mortar for coarse aggregate and 70 to 100 % for fine aggregate. The content of the mortar causes the specific gravity of the aggregate to be smaller, more porous or porous so that the hardness is reduced, the interface area is increased, and aggressive value, the higher the value of the compressive strength of the concrete.…”

Section: Introductionmentioning

confidence: 99%

The effect of the use of recycled coarse aggregate on the performance of self-compacting concrete (SCC) and its application

Suryadi

Qomariah

Susilo

2022

EEJET

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The demand for self-compacting concrete is very high because this concrete has high flowability and has resistance to segregation. Natural aggregates are of high value, while concrete demolition materials are abundant and of low value. So that the recycled coarse aggregate can be used as concrete material, this study analyzes the characteristics of Self Compacting Concrete (SCC) using recycled coarse aggregate from construction waste. Tests for aggregate wear, aggregate hardness, compressive strength of concrete and tensile strength of concrete were carried out. The wear test refers to the standard AASHTO T-96-74, ASTM C-131-55 and SNI 2417-2008. This test uses recycled coarse aggregate that has been washed so that the sludge content is clean; after that, it was baked with the used aggregate, the aggregate that passed the 12.5 mm sieve and was retained in the 9.5 mm sieve. The test object is pressurized 40 tons at a speed of 4 tons/minute. Concrete Compressive Strength Test refers to SNI 03-1974-2011, using a scale with an accuracy of 0.3 % of the weight of the concrete, a concrete press machine and a capping machine. While the split tensile strength test of concrete refers to SNI 03-2491-2014, carried out on days 7, 21 and 28 with a cylindrical test object. Variations of recycled aggregates start from 0 %, 25 %, 50 %, 75 %, and 100 %. The design's compressive strength is 25 MPa. The results showed that the recycled aggregates had good gradation, high absorption and low specific gravity compared to natural aggregates. The recycled coarse aggregate reduces the compressive strength of the concrete and causes a decrease in a slump, thereby reducing the split tensile strength of the concrete

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Proposed mix design method for producing sustainable self compacting heat cured recycled aggregate concrete and its microstructural investigation

Cited by 44 publications

References 34 publications

Rheological and Durability Properties of Self-Compacting Concrete Produced Using Marble Dust and Blast Furnace Slag

Rheological and Durability Properties of Self-Compacting Concrete Produced Using Marble Dust and Blast Furnace Slag

The equivalent mortar volume method in the manufacturing of recycled aggregate concrete

The effect of the use of recycled coarse aggregate on the performance of self-compacting concrete (SCC) and its application

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