Effect of metakaolin on the properties of conventional and self compacting concrete

Lenka, S.; Panda, K. C.

doi:10.12989/acc.2017.5.1.31

Cited by 47 publications

(21 citation statements)

References 20 publications

(27 reference statements)

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“…no blocking or segregation phenomenon were found in the mixes at the time of the test execution. these results are similar to the results study [25]. From the previous works on fresh test of blended SCHPC, it can be observed that the replacement of CKC or NL, from the cement, rises in water demand because of their fineness and reactivity with cement [24,28].…”

Section: Fresh Examination Resultssupporting

confidence: 90%

“…Besides, the large surface area of calcined kaolin clay leads to an increase in a reaction as well. these results are in agreement with the previous work [22,25].…”

Section: Compressive Strengthsupporting

confidence: 94%

“…thus, CC plays an important role in improving the bonds between cement paste and aggregate particles due to the formation of a dense microstructure in the ITZ, and it also increases the paste matrix, which could be attributed to both the physical and chemical advantages offered by CC. these results are in agreement with the previous study [8,11,25,30].…”

Section: Compressive Strengthsupporting

confidence: 94%

“…Because the influence of the proportion and fineness of calcined kaolin clay (CC) and nano lime (nano CaCO3), which reduces the ability of passing in the same way to reduce the filling ability. similar results were reported by [22,25,26]. But it does not agree with the study [27].…”

Section: Fresh Examination Resultscontrasting

confidence: 66%

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Experimental Investigation of Self-compacting High Performance Concrete Containing Calcined Kaolin Clay and Nano Lime

Kadhum

Owaid

2020

Civ Eng J

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The aim of this research is to investigate the effect of pozzolanic materials and nano particles on improve the strength characteristic by the properties of a self-compacting high-performance concrete that includes calcined clay with nano lime. In this study, two blends systems are worked on, they are the binary and the ternary systems. For binary mixtures, test samples were prepared from 5% CC, 10% CC, 15% CC and 3% NL by partial replacement of the cement weight. While ternary mixtures, samples were prepared from 5% CC 3% NL, 10% CC 3% NL and 15% CC 3% NL by partial substitution of cement weight. The tests conducted on mixes are fresh tests like slump flow diameter, V-funnel, L-box, and segregation resistance. The compressive strength test was determined at 7, 28 and 56 days. While splitting tensile strength tests at 7 and 28 days from the SCHPC produced in the study. It was concluded that the replacement of CC and NL in SCHPC binary mixes reduced the fresh results enough for SCHPC production and gave a general improvement in the compressive strength and splitting tensile strength properties of the SCHPC mixture. SCHPC with 10% CC partial replacement of cement showed higher values of compressive and splitting tensile strength, compared to the reference mixture of SCHPC for all days, thus it was considered the best. Whereas, the strength of the concrete mixtures in the ternary cement mixtures was better than the strength of the mixing and control mortar systems for the same replacement levels in 7 , 28 and 56 days.

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Section: Fresh Examination Resultssupporting

confidence: 90%

“…Besides, the large surface area of calcined kaolin clay leads to an increase in a reaction as well. these results are in agreement with the previous work [22,25].…”

Section: Compressive Strengthsupporting

confidence: 94%

Section: Compressive Strengthsupporting

confidence: 94%

Section: Fresh Examination Resultscontrasting

confidence: 66%

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Experimental Investigation of Self-compacting High Performance Concrete Containing Calcined Kaolin Clay and Nano Lime

Kadhum

Owaid

2020

Civ Eng J

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“…Lastly, the replacement of OPC by the binary admixtures (FA+MK) was varied as given in Table 2 [17]. With inclusion of MK in SCC water absorption values decreases with higher percentage of replacement [18].…”

Section: Water Absorption Testmentioning

confidence: 99%

Optimum Dose of Binary Admixtures in Self Compacting Concrete

Tripathi*,

Kumar,

Mehta

et al. 2019

IJITEE

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Self Compacting Concrete (SCC) is a high performance concrete and is becoming popular day by day in the field of construction. Generally, the quantity of binder is more in SCC than the normal concrete. The application of pozzolanic material is found successful in such type of concrete. Generally, Ordinary Portland Cement (OPC) is replaced with Fly Ash (FA). In this paper, the results of an experimental programme to evaluate the performance of SCC are presented and optimum dose of binary admixture was found. For the determination of the optimum dose, concrete cubes of 100mm sizes were cast. The replacement level of OPC by FA was varied as- 5, 10, 15 and 20%, by mass. The OPC was also replaced separately by Metakaolin (MK) - 5, 10, 15 and 20%, by mass. Further, the OPC was replaced by the binary admixture (FA+MK). The workability and strength of SCC of grade M25 (Referral concrete- RC) and the concrete using the binary admixtures were studied. All SCC mixes were tested for workability as recommended by EFNARC i.e. Slump flow, T50 time flow, V-funnel, L-box, U-box and J-ring. The workability of SCC mix increases with FA and decreases gradually as MK content is increased. The optimum replacement level of OPC by binary admixture is 25% (FA-15% + MK-10%) with respect to compressive strength. The water absorption of cubes was also examined. It is concluded that a high strength and economical SCC could be developed by incorporation of FA and MK.

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