alternative to cement
Conventional clinker can be partially substituted for alternative materials that include volcanic ash, certain clays, finely ground limestone, ground bottle glass, and industrial waste products—namely blast furnace slag (from manufacturing iron) and fly ash (from burning coal).
Pulverised Fuel Ash (PFA), aka ‘Fly ash’ as a cement substitute. PFA is a by-product of coal-burning power stations.
Ground Granulated Blast-furnace Slag (GGBS) as a cement substitute. GGBS is a by-product of the iron and steel industry.
Silica fume. Limestone fines
Is geopolymer concrete a suitable alternative to traditional concrete
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Some binders within this generic group are not viable alternatives to traditional Portland cement based concrete. The particular geopolymer considered in this paper does appear to provide a suitable alternative and has been used in a number of applications in Australia
Are there any practical alternatives to the manufacture of Portland cement clinker
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Although the cement and concrete industry is essentially sustainable with respect to its global raw materials supply, and concrete manufacture results in relatively low CO2 emissions compared to most conceivable substitutes, the enormous volumes of concreteEnergy generation from geothermal resources is attractive since it is a clean and self- renewing resource; it is also relatively inexpensive compared to other forms of energy generation. Nonetheless, one of the most significant disadvantages is the generation of
New cements for the 21st century: The pursuit of an alternative to Portland cement
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Preparation of this article entailed authors analyzing the contents of quite a number of papers, although the main objective was never to review the state of the art of new cements. Rather authors intend to discuss why they believe alkaline activated cement can be Several alternative binders have been available for almost as long as Portland cement yet have not been extensively used, and new ones are being developed. In this paper, four promising binders available as alternatives to Portland cement are discussed, namely calcium
Alkaline activation of different aluminosilicates as an alternative to Portland cement : alkali activated cements or geopolymers
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Portland cement is considered an excellence building material. This is due mainly to its high performance, its good quality/price ratio and the raw materials from which it is made can be found almost everywhere in the world. However, the development of alternative Portland The cement industry has for some time been seeking procedures that would effectively reduce the high energy and environmental costs of cement manufacture. One such procedure is the use of alternative materials as partial replacements for fuel, raw materials or The objective of this article is to describe the current state of the cement industry, its sustainability, and how it compares to alternative cement technologies specifically Sialite technology. The process for creating the most widely used cement portland cement is an
Microstructure and Engineering Properties of Alkali Activated Fly Ash-as an environment friendly alternative to Portland cement
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Alkali activated fly ash (AAFA), also named geopolymer , has emerged as a novel engineering material in the construction industry. This material is normally formed by the reaction between fly ash and aqueous hydroxide or alkali silicate solution. With proper mixOne approach to decarbonising the cement and construction industry is to replace Portland cement systems with lower carbon alternatives that have suitable properties. We show that seven cementitious binders comprised of metakaolin, silica fume and nano-silica have
Evaluation of the physical properties of an endodontic Portland cement incorporating alternative radiopacifiers used as root‐end filling material
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Camilleri J. Evaluation of the physical properties of an endodontic Portland cement incorporating alternative radiopacifiers used as root‐end filling material. International Endodontic Journal, 4 231 240. Abstract Aim To investigate the physical and
Durability of alkali-activated binders: a clear advantage over Portland cement or an unproven issue
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polycondensation of the reaction products. Publications on the field of alkali-activated binders, state that this new material is likely to have high potential to become an alternative to Portland cement . While some authors state that
The effect of using thermally dried sewage sludge as an alternative fuel on Portland cement clinker production
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This study considers the potential of a sewage sludge previously dried using a novel drying process as an alternative fuel in the cement industry. A comprehensive characterisation study of the sewage sludge is presented. The calorific value of the sludge was around 8300 This paper aims to examine the use of fines generated out of recycled aggregates production as an alternative raw material for Portland clinker kilns with enumeration of possible limitations. Different technical set-ups were used to separate these fines from the Over the last 20 years, interest in diverting waste from landfills and recovering energy from waste materials has grown significantly. The cement industry in particular has adapted its production methods to accommodate a wide variety of waste materials as alternative fuels in
Geopolymer and Portland cement concretes in simulated fire
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spalling in fire. Geopolymer, an environmentally friendly alternative to Portland cement is purported to possess superior fire-resistant properties. However, the spalling behaviour of geopolymer concrete in fire is unreported. In this
replacement of cement by fly ash
Experimental Investigations on Partial Replacement of Cement with Fly ash in design mix concrete
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The advancement of concrete technology can reduce the consumption of natural resources and energy sources and lessen the burden of pollutants on environment. Presently large amounts of fly ash are generated in thermal industries with an important impact onFly ash is commonly used as a substitute for cement within concrete in various applications. Manufacturers of reinforced concrete products commonly limit the quantity of fly ash used to 25% or less by weight. Test cylinders with varying percentages of Class C (25 65%) and
Properties of sustainable concrete containing fly ash slag and recycled concrete aggregate
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Class F fly ash is usually added cement replacement levels of 15 25% [23] Cement and any fly ash and/or slag were then added and dry blended for a further minute were then immersed in a tank containing the artificial seawater at 23 °C. The seawater was replaced with a
Strength behaviour of mortar using fly ash as partial replacement of cement
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This paper reports the results of an experimental investigation carried out to study the effects of fly ash on strength development of mortar and the optimum use of fly ash in mortar. Cement was partially replaced with six percentages (10%, 20%, 30%, 40%, 50% and 60%)
A comparative study on egg shell concrete with partial replacement of cement by fly ash .
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see more details industries causes environmental pollution and global warming. In 1000 Kg of cement manufacturing processes approximately 900 Kg of CO 2 is emitted. In order to reduce the impact of cement production on atmosphere, waste by products is used as
Effect of Class-F fly ash as partial replacement with cement and fine aggregate in mortar
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Fly ash is investigated for its use as a replacement for cement and fine aggregate in cement mortar. This paper presents the results of the cement mortar of mix proportion 1: 1: 4.5 and 1: 6 cement mortar in which cement is partially replaced with Class-F fly ash as 0%, 10In this paper, the detailed experimental investigation was done to study the effect of partial replacement of cement by Fly Ash (FA) and Rice Husk Ash (RHA) in combine proportion started from 30% FA and 0% RHA mix together in concrete by replacement of cement withratio of 0. 0. and 0. in which the fine aggregate was replaced with fly Test results showed that rheological constants increased with higher replacement level of fly ash and that The other three concrete mixtures were made by replacing cement with 40%, 45%, and 50% ofreplacing 20% replacement of cement by GGBS (GAC1) and concrete made by replacing 40% replacement cement is increased and the strength of fly ash concrete when replaced with 40 decreased, we recommend the use of fly ash between 20- 40% replacement with cement Fly ash (FA) and copper tailings (CT) both are, anthropogenic wastes, spread all over the globe due to rapid growth in thermal power plants and progressive increase in the demand of copper. This study examines the feasibility of combined utilization of FA and CT in
Flexural responses of hybrid steel polyethylene fiber reinforced cement composites containing high volume fly ash
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Therefore, it is important to develop strain hardening FRCC incorporating cement replacing materials such as The 50% replacement of cement by fly ash is found to be an W. HansenTensile strain-hardening and multiple cracking in high performance cement based composites
Cement replacement materials
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Okpala DC. Rice husk ash (RHA) as partial replacement of cement in concrete London; 1970 Google Scholar. Ahmad SY, Shaikh Z. Portland-pozzolana cement from sugarcane bagasse ash . In: Lime and other alternative cements . London: Neville Hill Ed.; 1992 The maximum reduction due to 100% EPA replacement of PA was 43.5 13] X. Fu, DDL ChungEffect of admixtures on the thermal and thermomechanical behavior of cement paste. ACI 455-459. Google Scholar. [19] B. Postacioğlu. Bağlayıcı Maddeler [ Cementing Materials], vol
The effectiveness of using Raw Sewage Sludge (RSS) as a water replacement in cement mortar mixes containing Unprocessed Fly Ash (u-FA)
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The performance of two groups of mortar mixes containing Unprocessed Fly Ash (u-FA) with either Raw Sewage Sludge (RSS) or water was examined. Both groups included four mortar mixes containing Portland cement sand, u-FA. Group 1 used RSS as a water replacement
Optimization of fly ash in concrete: High lime fly ash as a replacement for cement and filler material
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This research paper seeks to optimize the benefits of using High Lime fly ash in concrete as a replacement for large proportions of cement . High Lime fly ash is a type of sub-bituminous fly ash that is self- cementing as well as pozzolanic in nature. High Lime fly ash would beBy replacing up to 45% class F fly ash reduced pore diameter and porosity of concrete For 30% and 40% fly ash replacement sorptivity at 28 days reduced by 6% and 20% of that of from the test results: The 28-day strength dropped when cement was partially replaced with fly
Effect of partial replacement of cement by fly ash rice husk ash with using steel fiber in concrete
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In the ancient period, construction work was mostly carried out with help of mudstone from industry. Fly ash is a by-product of burned coal from power station and rice husk ash is the by product of burned rice husk at higher temperature from paper plant artificial fibers are fly ash is commonly used as a cement replacement Siddique studied the influence of using Class F fly ash as sand replacement (ie as an additional cementitious material) on the mechanical properties concrete. The results indicated that, when sand was replaced by fly ash
Fly ash concrete: a technical analysis for compressive strength
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The cement in concrete matrix is replaced from 5% to 25% by step in steps of 5%. It is observed that replacement of cement in KEY WORDS: Fly ash Cement Compressive strength 1. INTRODUCTION Fly ash is very much similar to volcanic ashes used in production of the
replacement of cement by silica fume
Effect of partial replacement of cement by silica fume on hardened concrete
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The use of Silica Fume (SF) in short period of time had one of the most dramatic impacts on the industrys ability to routinely and commercially produce SF modified concrete of flowable in nature but yet remain cohesive, which in turn would develop both high early and high later
Review paper on partial replacement of cement with silica fume and its effects on concrete properties
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The aim of this study is to evaluate the performance of Silica Fume an industrial by product as a admixture in concrete keeping in view the increasing market demand of cement which compel production of cement at large scale resulting in environmental problem and An experimental investigation on the effect of silica fume on expansion of cement and drying shrinkage of mortars is reported. Tests were conducted on cylindrical specimens of 30 mm diameter and 30 mm height for expansion of cement pastes. The drying shrinkage of mortars
Silica fume in high-strength concrete
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The results suggest that the optimum replacement of cement by silica fume in high-strength concrete 50 to 70 MPa (7500 to 500 psi) at lb/yd3) and a water-cementitious ratio of 0.2 it was not possible to increase the strength of concrete using silica fume to replace cement
Experimental investigation on silica fume as partial replacement of cement in high performance concrete
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–ABSTRACT — With increased environmental awareness and its potential hazardous effects, utilization of industrial byproducts has become an attractive alternative to disposal. Silica fume (SF)
Effect of silica fume on strength and durability parameters of concrete
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and the global warming, hence it is inevitable either to search for another material or partly replace it by 7.75 N/mm2 and 9.38 N/mm2 at 7 and 28 days when silica fume is replaced by 15 Thus replacement of silica fume is found to have increased the durability against acid attack
Influence of silica fume replacement of cement on physical properties and resistance to sulfate attack, freezing and thawing, and alkali- silica reactivity
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Between 1983 and 1990, a series of test programs was conducted into the physical properties and durability of pastes, mortars, and concretes made with silica fume replacements for part of the portland cement . From these test programs, it was found that Concrete containing silica fume as a partial replacement for cement exhibits an increased compressive both cement paste and mortar increase when 15% of the cement is replaced by silica Some researchers feel that replacing 25% of the cement in composites with silica fume
Role of silica fume in compressive strength of cement paste, mortar, and concrete
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Gaidis (1990) who obtained no additional strength for cement paste due to the replacement of cement by silica fume to silica fume but is not pozzolanic, was used to replace silica fume (10 percent of cement by replaced up to 15 percent of the cement with silica fume
The mechanical properties of concrete incorporating silica fume as partial replacement of cement
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Concrete is the most important engineering material and the addition of some other materials change the properties of concrete. With increase in trend towards the wider use of concrete for prestressed concrete and high rise buildings there is a growing demand
The Effect of marble powder and silica fume as partial replacement for cement on mortar
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Marble powder material (MP) is a very fine powder, obtained as a by-product of marble during the sawing and the shaping, and not recycling it due to environmental problems in the world. The possibility of using it and silica fume (SF) separately as partial replacement of
Cement replacement materials
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The maximum reduction due to 100% EPA replacement of PA was 43.5 13] X. Fu, DDL ChungEffect of admixtures on the thermal and thermomechanical behavior of cement paste. ACI 455-459. Google Scholar. [19] B. Postacioğlu. Bağlayıcı Maddeler [ Cementing Materials], vol
Enhanced stabilization of highly expansive clays by mixing cement and silica fume
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The cement was replaced with 10% SF because higher percentage of replacement might have by the XRF analysis and are given in Table 2. As it can be seen, the SF has a noticeable amount of SiO 2 which can react with the alkali product of cement (Koksal et al
Performance of self-compacting concrete at room and after elevated temperature incorporating Silica fume
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(2004) studied the compressive strength of NVC by replacing 0, 10 Yield stress was found to be increased linearly when 8 and 10% of cement was replaced by silica fume because slump flow diameter Increase in T500 and V-funnel time after the replacement of cement Concrete mixes were prepared using water/ cement ratios of 0.3 0.45 and 0.55 with a partial replacement of fine aggregate (FA) by rubber fibers ranging from 0% to 25%. Concrete mixes were also cast by replacing cement with silica fume ranging from 0% to 10% in theand 0.5%. Silica fume was used as a replacement by weight of cement . Two silica fume contents were used, 5% and 10%. Results showed cement and silica fume . Silica fume was used as a partial replacement of cement by weight Concrete mixes were prepared using w/c ratios of 0.3 0.45 and 0.55 with a partial replacement of fine aggregate by rubber fibers ranging from 0% to 25%. Concrete mixes were also prepared by replacing cement with silica fume ranging from 0% to 10%, in the control coefficient D (%) is calculated from the percentage of Portland cement replacement by pozzolanic samples, pozzolanic effect overcomes the influence of lower Portland cement content confirmed rising dilution effect as portion of pozzolanic materials replacing PC increased in
Experimental study on partial replacement of cement with egg shell powder and silica fume
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During the world, concrete is presence broadly used for the structure of greatest of the buildings, bridges etc. Presently, the complete construction industry is in exploration of an appropriate and operative the unused product that would greatly minimalize the use of
replacement of cement by calcium carbide
A study on cement made by partially replacing cement raw materials with municipal solid waste ash and calcium carbide waste
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ABSTRACT The use of Municipal Solid Waste incinerator bottom ash (MSWI) and Calcium Carbide Waste (CCW) as a part of cement raw material was investigated. The purpose was not only to dispose of the wastes, but also to alleviate some environmental problems, by
Strength and microstructure development in Bangkok clay stabilized with calcium carbide residue and biomass ash
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Therefore, the BA itself does not act as a cementing agent the W/B, the lower the strength is1 1 16. This result is the same as that of the cement stabilized clay 14. Fig. 6 shows the role of the replacement ratio on the strength development at 28 days of curing
LABORATORY EVALUATION OF THE PERFORMANCE OF CALCIUM CARBIDE WASTE (HYDRATE LIME) IN CONCRETE
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of CCW cement paste increased with the addition of CCW content, as shown in Figure 7. More water is required to achieve a consistent paste as cement is partially replaced with sorghum waste Potential of calcium carbide waste as partial replacement of cement in concrete
Effect of calcium carbide wastes as admixture in mortar
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and industrial wastes in the construction industries as pozzolanas to replace cement or as Utilization of Palm Oil Clinker as Cement Replacement Material Palm oil Type of Biomass Lime Waste As an Alternative Material To Conventional Hydrated Lime of CementLime Mortars
The use of fly ash and lime sludge as partial replacement of cement in mortar
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Type I mortar is cement less mortar, where 100% cement is replaced with a combination of fly calcium oxide in lime sludge, make them compatible with each other and can replace cement also V. Sata, and T. Leekeeratikul, Use of ground coarse fly ash as a replacement of silicaIn the recent years endeavor has been to develop a green concrete by utilizing industrial waste and reducing emission of carbon di oxide pollution in environment by replacing cement . In the present work it has been explored to use the blended mix of GGBS, CCR and
Optimizing the Mechanical Properties of Pervious Concrete Containing Calcium Carbide and Rice Husk Ash using Response Surface Methodology
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Padhi et al (2018)[15], reported that RHA when used as cement replacement decreases the workability of One of such ways is to replace a percentage of Ordinary Portland Cement (OPC) in When cement is partially replaced with RHA and CW the reaction begins with the
Soil stabilization using calcium carbide resiude and coconut shell ash
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ash, rice husk ash, biomass ash etc have been widely used to completely replace cement in stabilization water ratio of 0.6 and FA replacement ratio of Chinkulkijniwat, A., Raksachon, Y., and Suddeepong, A. (2010), Analysis of Strength Development in Cement Stabilized Silty
Durability performance of pervious concrete containing rice husk ash and calcium carbide : A response surface methodology approach
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rice husk ash (RHA) was used as a supplementary cementitious material to partially replace Portland cement 2012) investigated the properties of concrete by partial replacement of cement objective of designing a concrete mix is to determine the proportions of cement rice husk
Assessment of Calcium Carbide Waste Powder and Bamboo Leaf Ash Blended Cement Concrete as Sustainable Engineering Materials for Construction
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results further showed that CCWP15%, CCWP/BLA15% and BLA15% will replace OPC in BLA) both have positive impact on the strength of concrete when partially replaced production and mass construction, because peak compressive strengths at this replacement levels are
EXPERIMENTAL PRODUCTION AND EVALUATION OF CEMENTBONDED COMPOSITE CUBES FOR CONSTRUCTION MATERIAL
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The strontium and bicarbonate in the bone mineral can replace calcium and hydroxyl ions respectively Compressive strength reduces when cement is replaced with calcium carbide waste, rice husk As percentage partial replacement increases compressive strength decreases
FINE GRAINED SOIL STABILIZATION USING BINARY BLENDING OF CALCIUM CARBIDE RESIDUE AND PALM OIL FUEL ASH
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Based on what stated above, researchers have paid attention to develop new binder materials by utilizing alternatives to replace or reduce (2015) when they replaced the cement The Utilisation of Two Types of Fly Ashes Used as Cement Replacement in Soft Soil Stabilisation
Evaluation of fly ash- calcium carbide residue stabilized expansive soil as a liner material in engineered landfill
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are, silica fume (Kalkan and Akbulut), red mud- cement (Kalkan), cement kiln dust is another solid waste produced during the production of acetylene gas from calcium carbide has high expansive soil up to 30% at an increment of 6% by replacement of expansive
Calcium ‐Based Sustainable Chemical Technologies for Total Carbon Recycling
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doped carbon clusters[60] (CaCn; n=1 8) and new types of carbides (Ca2C and Diazoaryls can be replaced with boronic acids and sodium azide.[68] In this case, aryl Various pyrrole derivatives can be obtained from available oximes and calcium carbide in satisfactory yields
Evaluation of Calcium Carbide Waste as Filler Material in Hot Mix Asphalt
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of asphalt mixture and their observation was that cement dust can totally replace limestone powder 22A Prepared with Fly Ash from Power Plant Gacko as a Filler Replacement Properties of cement made by partially replacing cement raw materials with municipal solid waste
Strength Development and Durability of Alkali-Activated Fly Ash Mortar with Calcium Carbide Residue as Additive
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precast structural members, pavement of roadworks, and repair materials for replacing the could be drawn: 1) The use of CCR to partially replace FA for making alkali-activated mortar can [21] Suwan T, Fan M. Influence of OPC replacement and manufacturing procedures on the
The effect of partial replacement of cement with bone ash and wood ash in concrete
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THE EFFECT OF PARTIAL REPLACEMENT OF CEMENT Cement was partially replaced in concrete at 1 20 and 25% with both bone and wood ashes various work has been conducted in this area, by looking for materials that will totally or partially replace cements inreplacement ie RT-2 is gives the value less than the RT-1 but its gives the slightly more value than the conventional mix RT-0. From the curve we conclude that 10% RHA can replaced 8) C.Marthong(2012) effect of rice husk ash as partial replacement of cement on concrete
A step change in calcium carbide production technology
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in Western countries for several decades as gas- and oil-based processes have mostly replaced the coal-to as well as collected dusts from calcium carbide production are recycled for cement production. Coke for calcium carbide production is ob- tained from external sources
Impact and water resistance of rattan composites produced with rice husk ash and welders carbide waste as partial replacement for portland cement
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Replacing OPC with RHA and carbide waste generally increased the WA Partial replacement of ordinary Portland cement with up to 5% of rice husk ash and 10% of carbide waste should not impact negatively on the impact strength In: Cement Concrete Composites, 2 pp