An Experimental Investigation on Concrete by Partial Replacement of Cement by Fly Ash and Fine Aggregate by Quarry Dust

This study involves the experimental investigation of effect of fly ash and dry sludge on the properties of fly ash bricks. On seeing the present day demand for bricks, an attempt is made to study the behavior of bricks manufactured using, different waste materials like dry sludge and fly ash. The main aim of this work was to compare the compressive strength of the bricks. The disposal of sludge has always been by dumping in the soil, this has hazardous effect on the air and environment at large. They can be recycled for use in construction industry without producing any harm to human and environment. Research has shown that they can be used in manufacturing of cement. Sludge and fly ash mixed with Quarry dust and cement in various percentage keeping the Quarry dust and cement with constant percentage of 30% and 20% respectively, while fly ash is replaced with sludge from 0% to 100% consequently with 20% replacement. The result shows that fly ash and sludge together can be used in the alternative bricks, the compressive strength and water absorption is good and weight of the brick is reduced up to10% from the nominal bricks.

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EXPERIMENTAL INVESTIGATION ON FOAM CONCRETE WITH PARTIAL REPLACEMENT OF FINE AGGREATE BY FLY ASH AND CEMENT BY ALCCOFINE

E3S Web of Conferences ◽

10.1051/e3sconf/202018401089 ◽

2020 ◽

Vol 184 ◽

pp. 01089

Author(s):

Dr.G.V.V. SATYANARAYANA ◽

G. PRAVEEN KUMAR

Keyword(s):

Experimental Investigation ◽

Fly Ash ◽

Raw Materials ◽

Partial Replacement ◽

Fine Aggregate ◽

Foam Concrete ◽

Continuous Mining ◽

Materials Used ◽

Additive Materials

As we know that Foam concrete has been successfully used and it has gained popularity due to its lower density than normal concrete. Globally the construction activities are rapid and using huge amount of fine aggregate and cement. Due to continuous usage of large amount of sand and cement we are creating natural imbalance by CONTINUOUS mining of sand, lime etc., from natural resources, which causes many natural hazards and become threat to humans. As a responsible citizen of world everyone think to stop the usage of sand and cement in huge quantity for infrastructural activities. Fly ash is one alternative solution as a partial replacement of sand and cement with Alccofine. In this investigation we are replacing fine aggregate with fly ash and cement with Alccofine by usage of Using additive materials in foam concrete which provides not only workability, strength but also reduce overall cost. As reducing the quantity of sand and cement in foam concrete we conserve Green House effect and also other raw materials used for cement. Foam concrete produced with uniform distribution of air bubbles thoughout the mass of concrete. The density of foam concrete is a function of the volume of foam added to the slurry and the strength decreases as decrease in densities. This experimental investigation was designed for density of 800 kg/m3. This study was compiled in determination of workability, plastic density, water absorption and compressive strength of foam concrete. The test specimens has been casted and tested at the age of 7,14 and 28 days.

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Effect of Fly Ash on Mortar Mixes with Quarry Dust as Fine Aggregate

Advances in Materials Science and Engineering ◽

10.1155/2014/626425 ◽

2014 ◽

Vol 2014 ◽

pp. 1-7 ◽

Cited By ~ 14

Author(s):

Baboo Rai ◽

Sanjay Kumar ◽

Kumar Satish

Keyword(s):

Experimental Investigation ◽

Compressive Strength ◽

Fly Ash ◽

Fine Aggregate ◽

Test Results ◽

Excellent Performance ◽

Natural Sand ◽

Transverse Strength ◽

Combined Use ◽

Quarry Dust

This paper presents the results of an experimental investigation carried out to evaluate the compressive strength and transverse strength of 1 : 3 mortar mixes in which natural sand was replaced with 20%, 50%, and 100% quarry dust by weight which were further modified by partially replacing cement with four percentages (15%, 20%, 25%, and 30%) of low calcium fly ash. The compressive strength was determined at 3, 7, 28, and 50 days of age while transverse strength was determined at 28 and 50 days age. Test results revealed that the combined use of quarry rock dust and fly ash exhibited excellent performance due to efficient microfilling ability and pozzolanic activity.

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Significant effects of cementitious materials on strength gain properties of concrete with partial replacement of fine aggregate by quarry dust

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.16064 ◽

2018 ◽

Vol 7 (4) ◽

pp. 2051

Author(s):

S Suganya ◽

V Rajkumar

Keyword(s):

Fly Ash ◽

Greenhouse Gas Emission ◽

Cementitious Materials ◽

Mineral Admixtures ◽

Partial Replacement ◽

Fine Aggregate ◽

Strength Gain ◽

River Sand ◽

Micro Silica ◽

Quarry Dust

Concrete incorporates large amount of natural resource as aggregates with cement and water. Cement production consumes huge energy and causes about 7% of total greenhouse gas emission in the world. It has been strived to provide better quality in concrete using waste by-products from industries so that natural resources are used in an efficient manner and thereby the environment is protected from waste deposits. Hence, mineral admixtures like fly ash and micro silica can be used to overcome these issues. The demand for river sand is getting increased day by day, which affects its constant supply. Under these circumstances use of quarry dust becomes inevitable. The usage of fly ash in the concrete leads to strength gain only at later stages. In order to obtain strength during the early stage, micro silica is added as a partial replacement of cement. The properties of fly ash, micro silica and quarry dust were studied. Fly ash (0-40%) and micro silica (0-15%) are used as a partial replacement for cement and quarry dust (50%) as that for river sand by mass. Mechanical properties of the concrete containing hybrid mineral admixtures and quarry dust are studied systematically.

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Partial Replacement of Cement by Neem Leaves Ash and Fly Ash

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.a1545.059120 ◽

2020 ◽

Vol 9 (1) ◽

pp. 506-508

Keyword(s):

Experimental Investigation ◽

Fly Ash ◽

Ordinary Portland Cement ◽

Construction Materials ◽

Strength Properties ◽

Vital Role ◽

Partial Replacement ◽

Cement Ratio ◽

Neem Leaves ◽

The World

Concrete is the most essential construction materials in all over the world. It is necessary to search the cheaply obtainable material as admixture which might be partially replaced cement in the production of concrete. This project is an experimental investigation of the neem leaves ash as partial replacement for cement also fly ash is used for partial replacement of cement. The neem leaves were dried, burnt and heated in the furnace to produce Neem leaves Ash, which was discovered to posses Pozzolanic properties.the ordinary Portland cement was replaced by neem ash by 5%,10%,15%,20% and 25% by weight also flash replaced by 15%,20%,25% and 30% the cubes were crushed to know the comparative strength of the concrete at different curing days. The last result showed that workability and strength properties of the concrete was depended on water cement ratio, total days of curing, the percentage of replacement of Neem leaves ash for OPC . I. This project it was noticed that the result of 5% NLA and 15% fly ash and 10% NLA and 20% of fly ash were gradually increasing the strength at 28 days. Neem leaves play a vital role and behaviour of Neem leaves ash and flash used concrete will be studied

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