Performance evaluation of ultra-high performance concrete designed with alccofine

Reddy, G. Gautham Kishore; Ramadoss, P.

doi:10.1007/s41062-020-00375-y

Cited by 17 publications

(2 citation statements)

References 28 publications

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“…In a study conducted by Kumar et al [26], it was observed that the use of alccofine in lightweight concrete led to a substantial enhancement in its flexural strength. In their study, Reddy and Ramadoss [27] employed a proportion of 8% alccofine in the composition of high performance concrete. The findings revealed a significant improvement in the flexural strength of the material.…”

Section: Flexural Strengthmentioning

confidence: 99%

Development of a novel sustainable concrete from waste coconut shell with alccofine supplements

Prakash,

Srividhya,

Gowrishankar

et al. 2024

ACAE

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The infrastructure of a country depends significantly on cement concrete as the primary construction material. The aggregate comprises a significant proportion of the overall volume of concrete. However, the ongoing extraction of granite rock to obtain coarse aggregate contributes to the escalating need for natural resources among future generations. Due to its high carbon dioxide (CO2) footprint, the cement industry is a significant contributor to global warming. An appropriate reduction in the amount of cement in concrete without affecting its key properties can result in economical and sustainable development of the construction industry. In this investigation, agricultural waste coconut shell is considered as a substitute for conventional aggregate in concrete to produce lightweight coconut shell concrete. The alccofine-1203 contains ultrafine particles with a distinctive composition that enhances the pozzolanic and hydration process in concrete. Alccofine ranging from 5 % to 15 % were added to cement. The results demonstrated that the 10 % alccofine enhanced the fresh and mechanical properties of the lightweight coconut shell concrete. Using a combination of coconut shell and alccofine in concrete would be the most environmentally sustainable option in the construction industry.

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Section: Flexural Strengthmentioning

confidence: 99%

Development of a novel sustainable concrete from waste coconut shell with alccofine supplements

Prakash,

Srividhya,

Gowrishankar

et al. 2024

ACAE

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“…Reddy and Perumal (2020a, 2020b) put the coarse aggregate with diameters of 6 mm and 10 mm into UHPC. The results show that adding coarse aggregate slightly reduces the mechanical property of UHPC.…”

Section: Introductionmentioning

confidence: 99%

Experiment and phase-field simulation of uniaxial compression of ultra-high-performance concrete with coarse aggregate

Bing

Peng

et al. 2022

Advances in Structural Engineering

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Ultra-high-performance concrete with coarse aggregate (UHPC-CA) is a newly developed material. To explore the influence of aggregate volume fraction and maximum aggregate particle size on the compressive strength of UHPC-CA, a batch of UHPC-CA numerical samples as well as some experiments is carried out. The phase-field method is introduced to simulate the uniaxial compressive strength, and the simulation results show good agreement with experimental results. Both the simulation results and experiment results show that the compressive strength decreases with the aggregate volume fraction and increases with the maximum aggregate particle size. A size effect model of UHPC-CA is established by using its aggregate volume fraction and the maximum aggregate particle size.

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Effect of acids and freeze–thaw on the durability of modified rubberized concrete with optimum rubber crumb content

Kumar

Dev

2022

J of Applied Polymer Sci

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Investigations of the effect of acids and freeze-thaw on pozzolanic cement-based rubberized concrete after surface treatment of rubber crumbs are limited. Rubberized concrete's mechanical and durability properties (water absorption, acid attack resistance, and freeze-thaw attack resistance) are evaluated. Six rubber crumbs content (0%, 10%, 15%, 20%, 25%, and 30%) and particle size 0.6-2.36 mm are used to replace fine aggregate in concrete partially, and 15% replacement level of rubber crumb is found to be the optimum quantity in concrete. Structural analyses show that the specimens remain in the crystalline phase after being submerged in H 2 SO 4 and HCl acid. When rubberized concrete is immersed in H 2 SO 4 and HCl solution with equal concentrations and duration, specimens immersed in HCl solution have been found to have less surface erosion, less weight loss, and lower compressive strength loss. When the conventional concrete mix is immersed in H 2 SO 4 and HCl solution, the losses in compressive strength are 74.56% and 30.34%, but in rubberized concrete, the losses are 60.01% and 24.22% only. No apparent microcracks and no spalling on the surfaces of the specimens are found up to 90 freeze-thaw cycles. Rubberized concrete's ultrasonic velocity decreases slightly up to 90 freeze-thaw cycles, but it still has good concrete quality.

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Performance evaluation of ultra-high performance concrete designed with alccofine

Cited by 17 publications

References 28 publications

Development of a novel sustainable concrete from waste coconut shell with alccofine supplements

Development of a novel sustainable concrete from waste coconut shell with alccofine supplements

Experiment and phase-field simulation of uniaxial compression of ultra-high-performance concrete with coarse aggregate

Effect of acids and freeze–thaw on the durability of modified rubberized concrete with optimum rubber crumb content

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