The successful utilization in prevailing environment will offer multiple benefits including cost effective solution to construction industry and reduced environmental and health issues and would have positive impact on the. The trial mixes with and without fly ash are shown in table 9 and 10 were prepared to fulfill the. Development of self compacting concrete scc by using high volume of calcareous fly ash. It additionally examines about the impact of different waste material on new and solidified properties of self compacting concrete. Utilization of fly ash and pond ash in self compacting concrete. Coal bottom ash as sustainable material and bottom ash. Following are the steps adopted in ash class f and other way is fly ash blended with rice husk self compacting concrete.
Selfcompacting concretes using fly ash and fine limestone. Phenolphthalein indicator, which is used conventionally to determine the depth of carbonation in concrete, has a ph of approximately 9. Self compacting concrete, fly ash, silica fume and lime sludge. This project deals with the self compacting concrete where the cement is partially replaced. Also, compactibility is affected by the characteristics of materials and the mix. Self compacting concrete, fly ash, silica fumes, flowability, compressive strength, split tensile. Abstract traditionally, strength of concrete in construction work is evaluated in terms of its 28 days compressive strength of cubes cylinders. Fly ash the burning of coal and is collected by electrostatic to extend technical advantage to the properties of concrete but also contribute to the environmental pollution control. In the hardened state, fly ash contributes in a number of ways, including strength and durability 1, 2. Apr 01, 20 the influence of including fly ash fa on the properties of self compacting concrete scc is investigated. The experimental tests for fresh and hardened properties of self compacting concrete for three mixes of m 20 grade are studied and the results are compared with normal vibrated concrete. Use of fly ash in self compacting concrete scc vgb. Self compacting concrete an analysis of properties using fly ash. Tests were carried out on all mechanical properties of hardened.
The effect of fly ash on self compactability of fresh concrete for increasing fine aggregate content sm in self compacting concrete scc was investigated. Workability and strength characteristics of self compacting. Selfconsolidating concrete incorporating high volume of fly ash. To achieve the desired objective 5 cube samples and 90 cylinders of self compacting concrete with different weight percentages of fly ash and silica fume were cast to study the effect on. Pdf fly ash in selfcompacting concrete researchgate. Tech students, civil engineering department, mar athanasius. Pdf self compacting concrete using fly ash and silica fumes. The essential goal of this survey paper is to set rules to complete further research work.
The self compacting concrete flows easily at suitable speed into formwork without blocking through the reinforcement without being heavily vibrated. Introduction concrete is the most important and the most used construction material across the globe. The present project investigates the making of self compacting concrete more affordable for the construction market by replacing high volumes of portland cement by fly ash. Abrasion resistance and mechanical properties of self. Research significance the main objective of the present investigation was study the strength of self compacting concrete over a wide range of concrete strengths with varying dosages of fly ash. The influence of including fly ash fa on the properties of self compacting concrete scc is investigated. Comparison of self compacting concrete ssc containing fly. Strength and permeability properties of selfcompacting. Reducing the free water can decrease viscosity enhancing admixtures vea dosage. Properties of self compacting concrete containing fly ash. Self compacting concrete by partial replacement of. Scc self compacting concrete, compressive strength test, resistance.
Fresh properties of selfcompacting concrete with plastic waste as. In order to study the effect on compressive strength when fly ash and silica fume is added into self compacting concrete as cement replacement, the cube containing different proportion of fly ash were prepared and kept for curing for 7 and 28 days. However, the abrasionerosion resistances of fly ash concrete with 20%, 25% and 30% cement replacements were lower than that of the non fly ash concrete. Water used for mixing and curing was clean and free from injurious amounts of oils, acids, alkalis, salts and sugar, organic materials or other substances that may be deleterious to concrete. Self compacting concrete is considered as a breakthrough in concrete technology due to its improved performance and working environment. An investigation on effects of fly ash on strength and. The use of class f fly ash cffa as a partial replacement of cement in the concrete mixture can provide a wide variety benefits such as improving the mechanical properties, reducing the construction costs, and enhancing the environmental conditions. Pdf on mar 4, 2020, amrendra singh and others published mechanical properties of self compacting concrete incorporating fly ash and rice husk ash find, read and cite all the research you need. Evaluating the effect of fly ash on the rheological and. Properties of selfcompacting concrete containing class f fly ash. Pdf use of marble powder and fly ash in self compacting. Ifrah mushtaq and sandeep nasier, self compacting concrete design and performance using fly ash, international journal of civil engineering and technology, 94, 2018, pp.
The results also indicate that this incorporation could minimize the potential of environmental problems. Effect of metakaolin and fly ash on properties of self. Self compacting concrete is a flowing concrete mixture that is able to consolidate under its own weight. Some volume of powdered materials such as silica fume, fly ash, glass filler, stone. Self compacting concrete is a fluid mixture suitable for placing in structures with congested reinforcement without vibration. To reach this high performance the concrete needs to have special properties. Each batch due to the amorphous silica content in rha. Self compacting concrete scc is a fluid mixture, which is suitable for placing. The importance of scc is that it maintains all concrete s durability and uniqueness, gathering expected routine requirements. Keywords scc, slump flow test, vfunnel test, lbox test, sa sand aggregate ratio, vma viscosity. Therefore, large volumes of fly ash, partially in substitution of cement and partially as filler, can be employed in producing self compacting concrete. The canal water used in this study was free of alkalis, acids, salt. Self compacting concrete incorporating highvolumes of class.
Effect of metakaolin and fly ash on properties of self compacting concrete through accelerated curing dr. Effect of alccofine and fly ash on analytical methods of. Characterization studies of all the ingredients of scc have been carried out. Comparative assessment of selfcompacting concretes scc. Self compacting concrete scc is different to ordinary concrete, which needs to be vibrated, by is ability to fill every kind of formwork without any influence from outside. This paper compares the properties of fresh and hardened normal. Portland pozzolana cement ppc was partially replaced with 1070% fly ash. Use of brick dust and fly ash as a replacement of fine. Pdf mechanical properties of self compacting concrete.
Fly ash, ground granulated blast furnace slag, ordinary portland cement, self compacting concrete. Scc containing different proportion of fly ash have been tested for slump flow, vfunnel, ubox, lbox and jring and found that the values are within the. Self compacting concrete development must ensure a good balance between deformability and stability. Jan 15, 2015 coarse coldbonded fly ash lightweight aggregates were used in the production of the self compacting concrete. Fly ash, qdfa, quarry dust, superplast icizer, self compacting concrete, water absorption. Use of calcite and fly ash for manufacturing of self. As the four different self compacting concrete mix design for m30 and m40 grade each are prepared using 20% fly ash and 0%, 5%, 10%, 15% calcite proportions following points are. Self compacting concrete additives microsillica and fly ash. Introduction self compacting concrete scc, requiring no consolidation work at site or concrete plants, has been developed in japan to improve the durability and uniformity of concrete in 1988 okamura and ouchi, 1999. Chinnaraju3 1department of civil engineering, tamilnadu college of engineering, coimbatore 641659, india.
The fresh state properties like slump flow, t 50 time, vfunnel. Therefore the utilization of marble powder in self compacting concrete as filler material, the main objective of study is the behavior of scc with marble powder and fly ash and understand the effect on fresh property, harden property and durability and also investigate the compatibility of marble powders in scc along with chemical admixture. Self compacting concrete, compaction, fly ash, fresh properties, compressive strength. Self compacting concrete, fly ash, saturated water absorption, acid resistance, sulphate attack, mineral admixture. Self compacting concrete, fly ash, super plasticizers, silica fume.
Selfconsolidating concrete scc and highvolume fly ash. Assessment of fresh and hardened properties of self. Class f fly ash was used as partial replacement of cement 30% by weight of cement. A dry mixture of 10% cem i portland cement and 90% fly ash by weight was pelletized through wetting in a rotating and 45 angle tilted pan at ambient temperature. Self compacting concrete free download as powerpoint presentation. Comparative study of self compacting concrete mixes containing fly ash and rice husk ash b. A proper design of a self compacting concrete requires considerably more fines content as compared to the traditional concrete. Static segregation it refers to the concrete resistance against the free water flow.
There are, however, some differences between the hvfa self compacting concrete and the hvfa concrete designed by canmet. Performance of selfcompacting concrete containing fly ash. For this purpose, different self compacting concrete mixes were designed at constant. This paper presents the details self compacting concrete scc developed by using fly ash and manufactured sand. Effect of alccofine and fly ash on analytical methods of self. The slump flow test was conducted to assess the horizontal free flow of scc in the. The tiny spheres act as a form of ball bearing that aids the flow of the concrete.
Nov 01, 2019 the performance of high volume fly ash hvfa based selfcompacting concrete scc has been assessed through summarisation of existing literature. Influence of fly ash on the properties of selfcompacting. Introduction malaysia is one of the thriving economies and a welldeveloping country in the world. A study on mechanical properties of selfcompacting. Pdf self compacting concrete using fly ash and silica. Study of behaviour of self compacting concrete with partial replacement of concrete by fly ash. Study on durability characteristics of selfcompacting. Their result indicates that the high volume fly ash can be used in scc to produce high strength and low shrinkage concrete.
Comparative study of self compacting concrete mixes. Properties of self compacting concrete containing fly ash and. Both reduction in water retention and ballbearing effect of fly ash were considered as the influence of the replacement of cement with fly ash. Pdf strength characteristics of self compacting concrete. Self compacting concrete scc is a highly flowable concrete that is placed by means of its own weight. The various properties of fa, cba and rca along with their applications and health hazards have been discussed briefly. Fly ash has proved to be efficient as an scc addition, ensuring an. Effect of fly ash on elastic properties of self compacting. Use of fly ash in self compacting concrete scc project number 209. Pdf self compacting concrete using fly ash and silica fumes as.
Bouzoubaa n, lachemi m 2001 self compacting concrete incorporating high volumes of class f fly ash. Researchers confirmed that the usage of industrial by products such as fly ash, ggbs, pond ash. The self compacting mixtures had a cement replacement of 40,50 and 60% by class f fly ash. The use of mineral admixtures, such as fly ash, could increase the slump of the concrete mixture without increasing its cost. An experimental program has been developed to investigate the behavior of self compacting concrete containing fly ash. The cement the cement procured was tested for physical requirements in.
The replacement of cement with fly ash, while improves workability, it also aids in lowering the carbon footprint associated with concrete production and reduces the overall costs of construction material. Pdf a comparative study is carried out to study the effect of partial replacement of pozzolanic. Effect of fly ash blending on self compacting geopolymer concrete scgc in terms of durability and microstructure is discussed here. A study on mechanical properties of self compacting concrete by partial replacing cement with pozzolanic materials fly ash, silica. Design of selfcompacting concrete with fly ash magazine of. Ternary mixes of selfcompacting concrete with fly ash and. Mar 01, 2011 before using a new material like self compacting concrete scc, the carbonation behaviour needs to be investigated to study the effect of use of fly ash and bottom ash in scc.
Workability and strength characteristics of self compacting concrete. A study on mechanical properties of selfcompacting concrete. The last 50 years has seen the use of fly ash in concrete grow dramatically with close to 15 million tons used in concrete, concrete products and grouts in the u. Scc significantly reduces the placement time of concrete in the large section due to easy handling technique. The parameters such as compressive strength, water absorption, sorptivity, sulphate resistance are discussed and comparisons between the various mixes are represented in order to study the effect on fresh concrete properties when fly ash is added. This concrete becomes popular in civil engineering constructionthe objective of this study is to understand the. Pdf selfcompacting concrete brabha nagaratnam academia. The high cement content is usually reduced by using supplementary cementitious material like fly ash, ground blastfurnace slag and silica fume. Due to many advantages like faster construction, reduction in site for thinner concrete sections,improved durability, suitability for congested reinforcement. Abstract self compacting concrete scc has high flowability and high resistance to segregation and bleeding. Self compacting concrete incorporating highvolumes of. The free shrinkage from casting to 400 days of aging of four sccs mixtures based on cem i 52. Bouzoubaa and lachemi 2010 carried out an experimental investigation to evaluate the performance of scc made with high volumes of fly ash. Introduction 1the introduction of self compacting concrete scc to the construction industry has resulted in a major change in.
Self compacting concrete, fly ash, rice husk ash,compressive strength, flexural strength, split tensile strength. Comparison of self compacting concrete ssc containing. Introductionself compacting concrete scc 1 has been described as the most revolutionary development in concrete industry. Khurana and others published fly ash in self compacting concrete find, read and cite all the research you need on. High fineness, good reactivity, low carbon content are essence of good ash. Properties of selfcompacting concrete containing class f. The water to binder ratio was maintained constant at 0. This self compacting concrete scc, and combination of fly ash results the increase in this shows the strength development fa ash and rice husk ash based concrete. Behaviour of self compacting concrete using portland. Reviewing the behaviour of high volume fly ash based self. In addition to scc, innovative materials, such as highvolume fly ash concrete hvfac, also provide a significant.
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