A Proposed Mix Design of Concrete with Supplementary Cementitious Materials by Packing Density Method

Rath, Badrinarayan; Deo, Shirish V.; Ramtekkar, Gangadhar

doi:10.1007/s40996-020-00362-4

Cited by 12 publications

(3 citation statements)

References 15 publications

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“…The brick aggregate of the maximum size of 20 mm had used as coarse aggregate. For getting a better packing density, the ratio of fine aggregate to coarse aggregate was taken as 50:50 28 . A solution of sodium hydroxide and calcium silicate was used as an activator and their ratio was kept as 1:2.5.…”

Section: Methodsmentioning

confidence: 99%

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Effect of natural rubber latex on the shrinkage behavior and porosity of geopolymer concrete

Rath

2021

Structural Concrete

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Shrinkage‐reducing admixture has been proved as the best solution to reduce the shrinkage cracks on the surface of the concrete. Various shrinkage‐reducing admixtures available in the local market are chemical, highly hazardous, and limited use in concrete. In the present research, rubber latex was used by replacing water up to 2% in geopolymer concrete. Volumetric shrinkage for geopolymer concrete with different doses of rubber latex was determined and compared those results with traditional cement concrete of the same mix. The relation between volumetric shrinkage and porosity of concrete was studied at a deep level. It was found that a large number of micropores of concrete were reduced by using 2% of rubber latex resulting in decrease in shrinkage significantly. By using rubber latex in concrete, a hazardous expensive chemical shrinkage‐reducing admixture can be replaced by a low‐cost nonhazardous organic substance.

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Section: Methodsmentioning

confidence: 99%

“…For getting a better packing density, the ratio of fine aggregate to coarse aggregate was taken as 50:50. 28 A solution of sodium hydroxide and calcium silicate was used as an activator and their ratio was kept as 1:2.5. Also, the alkali activator (NaOH) to calcined clay ratio was fixed as 0.35.…”

Section: Methodsmentioning

confidence: 99%

Effect of natural rubber latex on the shrinkage behavior and porosity of geopolymer concrete

Rath

2021

Structural Concrete

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“…Based on the experimental investigation performed on the bagasse ash blended concrete, it was concluded that the presence of finer ash particles induced discontinuous pores in the matrix and the micro-pores were present in the concrete filled by these finer particles [12]. In view of evaluating a composed mix design, the aggregates should be accommodated denser, in which packaging density plays a vital role in the minimization of binder quantity as well as the creep and shrinkage in the concrete [13]. The above-mentioned literature gave direction to this research.…”

Section: Introductionmentioning

confidence: 99%

Comparative study on strength and durability of concrete upon partial substitution of fly ash and bagasse ash in conventional concrete

Susmitha

Rao

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The need for concrete is continuously increasing which also leads to a proportional increase in cement demand. The percentage increase of cement manufacturing is 3% per annum. Due to the augmented consumption of cement, the emission of carbon-di-oxide is increasing day by day. CO2 accounts for approximately 65% of global warming among greenhouse effect. The notorious impacts caused due to the cement utilization gave direction to this research for the partial replacement of class F fly ash and bagasse ash burnt at 1000°C in the conventional concrete. Comparative study is performed by casting mix with fly ash replaced at 0% to 40% at 5% interval and accordingly other mixes with bagasse ash replaced with 0% to 40% at 5% interval by weight of cement in the concrete and cured for 28, 56, and 90 days. Experimental investigations were carried out to determine mechanical parameters like compressive strength, split tensile strength, flexural strength, and durability aspects like resistance to chloride ion permeability, acid attack. Micro-structural investigations were carried out to determine the presence of peak, the composition of elements through X-ray Diffraction (XRD). Based on the research, it was concluded that fly ash can be replaced up to 40% and bagasse ash up to 15% in the concrete in terms of both strength and durability aspects. Fly ash replacement resulted in the maximum later strength achievement of 74 MPa at 30% replacement while the bagasse ash incorporation resulted in maximum early strength attainment of 61.9 MPa at 15% replacement.

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Evaluating the Mechanical Properties of Fibre-Reinforced Concrete Containing Coconut Palm Leaf Ash as Supplementary Cementitious Material

Yousefi

Khalili

Gharaei-Moghaddam

et al. 2022

Iran J Sci Technol Trans Civ Eng

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A Proposed Mix Design of Concrete with Supplementary Cementitious Materials by Packing Density Method

Cited by 12 publications

References 15 publications

Effect of natural rubber latex on the shrinkage behavior and porosity of geopolymer concrete

Effect of natural rubber latex on the shrinkage behavior and porosity of geopolymer concrete

Comparative study on strength and durability of concrete upon partial substitution of fly ash and bagasse ash in conventional concrete

Evaluating the Mechanical Properties of Fibre-Reinforced Concrete Containing Coconut Palm Leaf Ash as Supplementary Cementitious Material

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