Strength and Durability Properties of Quaternary Cement Concrete Made with Fly Ash, Rice Husk Ash and Limestone Powder

India focuses on attention towards ''greener and cleaner'' environment surrounding us. For that, the engineers and scientists have joined hands together to accept the challenges for recycling wastes from industries. The generation of Bottom Ash (BA) from thermal power plants which are being increased day by day and facing disposal and environmental problems. In spite of that, it is being used as landfills which has no commercial value, but now needs to think on its utilization as useable supplementary materials. But from the literature survey, it was found that a little amount of research have been carried out on BA in the area based on its adsorption capability of dyes; pelletization efficiency of cold bonded aggregate; compressive strength, durability, water absorption characteristics and density variation in concrete and mortar; in order to ensure its usage as adsorption as well as construction material. The present paper deals with a critical review on BA as an adsorbent, light weight aggregate as well as partial replacement of fine aggregate in concrete. In addition, physical and chemical properties, transportation and disposal mechanism and environmental effects are also discussed.

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“…A large no. of bodies has been worked on the effective utilization of FA [22][23][24][25][26][27][28][29][30][31].…”

Section: Initiative From Govt Of India For Ash Utilizationmentioning

confidence: 99%

Review on Current Research Status on Bottom Ash: An Indian Prospective

Mandal

Sinha

2014

J. Inst. Eng. India Ser. A

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“…The strength and durability of concrete is affected by the presence of Ca(OH) 2 , which is water soluble. GGBS binds available Ca(OH) 2 and produces more of the stable gel C-S-H and that is responsible for the strength development. Therefore, replacing cement with increasing amounts of GGBS forms more C-S-H until a replacement ratio where the supply of Ca(OH) 2 becomes too small to be bound by the available GGBS.…”

Section: Development Of Compressive Strength In Sustainable Scc Mixesmentioning

confidence: 99%

“…Studies have shown that replacing cement with 20% fly ash in binary mixes increases the 28-day compressive strength compared to a control mix [2,3]. Both studies indicate that chloride penetration resistance is enhanced by replacing cement with 20% fly ash.…”

Section: Introductionmentioning

confidence: 97%

Durability and Compressive Strength of High Cement Replacement Ratio Self-Consolidating Concrete

Mohamed

2018

Buildings

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This study examines durability and mechanical properties of sustainable self-consolidating concrete (SCC) in which 80% of the cement is replaced with combinations of recycled industrial by-products including fly ash, silica fume, and ground granulated blast furnace slag (GGBS). The water to binder (w/b) ratio of SCC mixes studies was maintained at 0.36. The study proposes empirical relationships to predict 28-day compressive strengths based on the results of three-day and seven-day compressive strengths. In addition, the chloride penetration resistance of the various sustainable SCC mixes was determined after three days, seven days, and 28 days of moist curing of concrete standards. It was concluded that fly ash, silica fume, and GGBS contribute favorably to enhancing strength development, fresh properties, and durability of SCC in comparison to ordinary Portland cement (OPC). The compressive strength of the sustainable SCC mixes falls within ranges suitable for structural engineering applications. Replacing cement with 15% silica fume produced a 28-day average compressive strength of 95.3 MPa, which is 44.2% higher than the control mix. Replacing cement with 15% or 20% silica fume reduced the chloride ion permeability to very low amounts compared to high permeability in a control mix. replacement of cement in SCC mixes results in loss of concrete compressive strength during the early stages, but, in many cases, a significant increase in compressive strength develops during later stages.Adding 3.8% silica fume improves compressive strength, splitting, tensile strength, and durability of SCC mixes Quercia [5]. It was found that replacing 15% of cement by silica fume resulted in a 28-day compressive strength of 95.3 MPa, which was 44% higher than the control SCC mix examined in the study by Mohamed and Najm [6]. Due to their spherical morphology, which reduces inter-particle friction, both silica fume and fly ash enhance workability and is essential for producing high strength concrete.Partial replacement of cement in SCC with various industrial byproduct wastes such as limestone power, cement kiln dust, and pulverized steel slag improves resistance to chloride penetration [7]. Other studies, however, contend that, under laboratory conditions, the durability of SCC and traditional vibrated concrete may be comparable [8] and that using Rapid Chloride Penetration Test (RCPT) to assess durability of SCC does not produce reliable results. However, the same study acknowledges that the quality of compacting vibrated concrete onsite is unlikely to reach the quality of SCC. As a result, concrete structures built with SCC may still be more durable.Partial replacement of cement with GGBS in SCC enhances compressive strength and durability. In one study, it was shown that replacing 70% of cement in a particular SCC mix resulted in strength as high as the control SCC mix [9].Alkali-silica reaction (ASR) may lead to significant long-term damage and degradation of concrete properties [10]. GGBS is known to improve concrete resis...

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“…The utilization of supplementary cementitious materials (SCMs) to reduce CO 2 emission associated with the production of portland cement, which accounts for approximately 6-8% of the global anthropogenic CO 2 emissions, 1,2 is an ongoing endeavor. [3][4][5][6][7][8][9][10][11][12][13][14][15][16] Key challenges involve minimization of CO 2 emissions from both the calcination of raw materials and the fuel consumption in the development of new types of SCMs and blended cement formulas, while retaining the physical properties of the resulting concrete at the same level as for conventional ordinary portland cement (OPC). 4,7,[10][11][12]15,16 Commonly used SCMs in the cement industry include limestone, fly ashes, granulated blast-furnace slags, and natural pozzolans.…”

Section: Introductionmentioning

confidence: 99%

Physical performances of alkali‐activated portland cement‐glass‐limestone blends

et al. 2017

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The potential of calcium aluminosilicate (CAS) glasses as supplementary cementitious materials is studied in terms of the development of compressive strength for mortars containing a mixture of portland cement, CAS glass, and limestone. In addition, the impact of internal and external alkali activation of the cementitious systems on the mortar performances is investigated. Internal alkali activation is obtained by adding alkali oxides to the CAS glass system, whereas external alkali activation is realized by hydration of the blended cements containing alkali‐free CAS glasses using alkaline solutions. For the internally alkali‐activated systems and the alkali‐free mortars, higher strengths are achieved in comparison to the reference mortar prepared from plain ordinary portland cement. In contrast, the externally alkali‐activated mortars exhibit lower compressive strengths, implying the importance of both the immediate availability of alkali ions in the cementitious system and the increased dissolution rate of the glass particles caused by the network depolymerization. The glasses are also studied by thermal analysis and the results are used to calculate the theoretical CO2 emissions. The lowest embodied CO2 emission is estimated for the blends containing alkali‐activated CAS glasses.

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Strength and Durability Properties of Quaternary Cement Concrete Made with Fly Ash, Rice Husk Ash and Limestone Powder

Cited by 53 publications

References 14 publications

Review on Current Research Status on Bottom Ash: An Indian Prospective

Review on Current Research Status on Bottom Ash: An Indian Prospective

Durability and Compressive Strength of High Cement Replacement Ratio Self-Consolidating Concrete

Physical performances of alkali‐activated portland cement‐glass‐limestone blends

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