scholarly journals Strength and Durability Studies on Light Weight Self-Compacting Concrete with LECA as Partial Replacement of Coarse Aggregate

2018 ◽  
Vol 15 (1) ◽  
pp. 1-9 ◽  
Author(s):  
N Ramanjaneyulu ◽  
◽  
Kakustham Srigiri ◽  
N.V Seshagiri Rao ◽  
Keyword(s):  
Coarse Aggregate ◽  
Partial Replacement ◽  
Light Weight ◽  
Self Compacting Concrete ◽  
Strength And Durability

scholarly journals Performance of Recycled Concrete Aggregate in Self Compacting Concrete

2018 ◽  
Vol 7 (3.35) ◽  
pp. 1
Author(s):  
T. V. Arul Prakash ◽  
Dr. M. Natarajan ◽  
Dr. T. Senthil Vadivel ◽  
K. Vivek
Keyword(s):  
Fly Ash ◽  
Coarse Aggregate ◽  
Recycled Concrete ◽  
Concrete Aggregate ◽  
Recycled Concrete Aggregate ◽  
Self Compacting Concrete ◽  
Fly Ash Concrete ◽  
Local Construction ◽  
Class F Fly Ash ◽  
Strength And Durability

This article presents the influence of the Recycled Concrete Aggregate (RCA) on the mechanical properties of self-compacting fly ash concrete (M30 Grade). The RCA from local construction demolition site were employed as a replacement for natural coarse aggregate (0% - 30%) in self-compacting concrete (SCC). The Viscosity modifying material used in this study was Class F fly ash. The results indicate that recycled concrete aggregate can be replaced by an optimal 25% replacement percentage in the manufacture of SCC without significantly affecting strength and durability.  

Suitability of Quarry Dust as a Partial Replacement of Fine Aggregate in Self Compacting Concrete

2018 ◽  
Vol 877 ◽  
pp. 248-253
Author(s):  
Thete Swapnil Tanajirao ◽  
D. Arpitha ◽  
Suman Saha ◽  
C. Rajasekaran
Keyword(s):  
Coarse Aggregate ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Self Compacting Concrete ◽  
Slump Flow ◽  
Fine Aggregates ◽  
Material Gain ◽  
Optimum Utilization ◽  
Hardened Properties ◽  
Quarry Dust

Large quantity of the quarry dust gets produced annually in the quarries during the extraction of the crushed coarse aggregate. As a result, disposal problems of this material gain significant momentum as these disturb environmental systems also. Now-a-days many of the countries like India is facing problems of ban on the extraction of sand and lacunae in procuring of fine aggregate, which is important constituent of the concrete. To overcome this problem, present study is focused on the suitability to utilize the quarry dust in Self Compacting Concrete (SCC) partially as fine aggregate with the natural fine aggregates. In this work, quarry dust is used as replacement of sand in a different level (0%, 15%, 30%, 45% and 60%) for producing the SCC. Fresh properties such as slump flow and V-funnel time have been measured for all mixes and hardened properties as compressive strength, splitting tensile strength and flexural strength of the concrete have been checked for all the mixes and it has been found that optimum utilization of quarry dust up to 30% can been done to produce SCC without compromising with its properties.

BEHAVIOR OF M 50 GRADE SELF-COMPACTING CONCRETE DEVELOPED USING PORTLAND SLAG CEMENT AND METAKAOLIN

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Sravya Nalla ◽  
Janardhana Maganti ◽  
Dinakar Pasla
Keyword(s):  
Compressive Strength ◽  
Mineral Admixtures ◽  
Partial Replacement ◽  
Test Results ◽  
Slag Cement ◽  
Self Compacting Concrete ◽  
Destructive Testing ◽  
Compressive Strength Test ◽  
Portland Slag Cement ◽  
Strength And Durability

Self-compacting concrete (SCC) is a revolutionary development in concrete construction. The addition of mineral admixtures like metakaolin, which is a highly reactive pozzolana to the SCC mixes, gives it superior strength and durability. The present work is an effort to study the behavior of M50 grade SCC by partial replacement of Portland Slag Cement (PSC) with metakaolin. Its strength and durability aspects are comparable with a controlled concrete (without replacement of cement). In the present work, a new mix design methodology based on the efficiency of metakaolin is adopted. The optimum percentage replacement of cement with metakaolin is obtained based on compressive strength test results. The influence of metakaolin on the workability, compressive strength, splitting tensile strength and flexural strength of SCC and its behavior when subjected to elevated temperature was investigated through evaluation against controlled concrete and non-destructive testing. From the test results, it was observed that incorporation of metakaolin at an optimum dosage satisfied all the fresh properties of SCC and improved both the strength and durability performance of SCC compared to controlled concrete.

scholarly journals Study of Light Weight Fibre Reinforced Concrete by Partial Replacement of Coarse Aggregate with Pumice Stone

2021 ◽  
Vol 9 (9) ◽  
pp. 933-940
Author(s):  
Mohammed Sohel Ahmed
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Light Weight ◽  
Structural Members ◽  
Conventional Concrete ◽  
Shrinkage Cracking ◽  
Pumice Stone ◽  
Average Compressive Strength

Abstract: As the demand for the structural members application in the concrete industry is continuously increasing simultaneously many a times it is required to lower the density of concrete enabling light weight which helps in easy handling of the concrete and its members. In this research an experimental endeavour has been made to equate conventional concrete with light weight by partially substituting the coarse aggregate with the pumice stone aggregate in M30 grade mix design. Simultaneously small fibres of Recron3's Polypropylene have been applied to the concrete as a reinforcing medium to minimize shrinkage cracking and improve tensile properties. The coarse aggregate was substituted by the pumice aggregate in 10, 20, 30, 40, and 50 percent and fibres respectively in 0.5, 1, 1.5, 2 and 2.5 percent. The experiment is focused on strength parameters to determine the most favourable optimum percent with respect to conventional concrete. Keywords: OPC (Ordinary Portland Cement)1, FA (Fine Aggregate)2, CA (Coarse Aggregate) 3, fck (Characteristic Compressive Strength at 28days)4, Sp. Gr (Specific Gravity)5, WC (Water Content)6, W/C (Water Cement Ratio)7, S (Standard Deviation)8, Fck (Target Average Compressive Strength at 28days)9.

scholarly journals A Sustainable Study on Permeable Concrete using Bagasse Ash and Rice Husk Ash as a Partial Replacement of Cement

2020 ◽  
Vol 184 ◽  
pp. 01083
Author(s):  
Dr. Vanathi ◽  
Dr.K Radhika ◽  
Ms. G. Swetha
Keyword(s):  
Rice Husk ◽  
Surface Runoff ◽  
Water Surface ◽  
Void Ratio ◽  
Coarse Aggregate ◽  
Rice Husk Ash ◽  
Partial Replacement ◽  
Conventional Concrete ◽  
Strength And Durability ◽  
Day By Day

Permeable concrete is a special concrete which consists of cement, coarse aggregate and water. Due to rapid growth of globalization and urbanization, the construction of concrete roads increasing day by day which leads to decrease in percolation of storm water, surface runoff occurring to the decrease in ground water table. In previous concrete, single sized aggregate is used to maintain the void ratio in the concrete. The cement paste is bonded with aggregate with a void ratio of 20%. In this investigation, concrete of M20 grade with water cement ratio of 0.38 is used. The properties of concrete were increased by using Rice husk ash and Bagasse ash in changed percentages (10%, 20%, 30%) by weight of cement and with the combination of rice husk ash and bagasse ash 10% (5%RA + 5%BA), 20%(10%RA+10%BA), 30%(15%RA+15%BA) are used. The compressive strength of cubes, split tensile of cylinders are casted, tested after 7 days and 28 days. After testing, the optimum percentages of replacement of admixtures are found in the Permeable concrete. Therefore the strength and durability properties of permeable concrete with the addition of bagasse ash and rice husk ash with partial replacement of cement are compared with conventional concrete.

scholarly journals Strength Properties of Rice Husk Ash Concrete with Shredded Pet Bottles as Coarse Aggregate Replacement

2019 ◽  
Vol 3 (Issue 1) ◽  
Author(s):  
M.T Akinleye ◽  
Q.A Uthman ◽  
A.A Abdulwahab
Keyword(s):  
Rice Husk ◽  
Coarse Aggregate ◽  
Rice Husk Ash ◽  
Strength Properties ◽  
Partial Replacement ◽  
Light Weight ◽  
Pet Bottles ◽  
Concrete Mix ◽  
Compressive And Flexural Strengths ◽  
Light Weight Aggregate

This study investigated the strength properties of Rice Husk Ash (RHA) concrete with shredded Polyethylene Terephthalate (PET) bottles as coarse aggregate partial replacement. Concrete mix, 1:2:4 was designed for all specimens with w/c of 0.5. Samples were prepared and examined at deferent replacement levels of cement with RHA (5, 10 and 15%) using shredded PET bottles (5, 10 and 15%) as coarse aggregate replacement. Concrete without RHA and shredded PET bottles served as control. A total number of 90 concrete cubes and 20 flexural beams were used to examine the strength properties of produced concrete specimens at 28 days. Results revealed that both compressive and flexural strengths of RHA-concrete decreased as the amount of shredded PET bottles increased. The compressive strengths obtained were 20.65, 17.44, 16.53 and 15.87 N/mm2 while the flexural strengths were 10.49, 6.63, 6.59 and 5.72 N/mm2 for 0, 5, 10 and 15% replacement levels respectively. This class of concrete could be used to produce both plain and reinforced concrete of light weight aggregate.

Influence of Blast Furnace Slag as Coarse Aggregate on Various Grades of Self Compacting Concrete

2013 ◽  
Vol 831 ◽  
pp. 18-22
Author(s):  
R. Krishnasami ◽  
R. Malathy
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Coarse Aggregate ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Self Compacting Concrete ◽  
Waste Products ◽  
Complex Structural ◽  
Effective Use ◽  
Furnace Slag

Self-compacting concrete (SCC) is a highly workable concrete that can flow through densely reinforced complex structural elements under its own weight and adequately fill all voids without vibration or mechanical consolidation. Effective use of industrial waste products in concrete gains many economic, environmental, and social benefits rather than disposing of it as waste. The objective of this study is to investigate the effect of blast furnace slag as a partial replacement for coarse aggregate in M20, M30 and M40 grades of fly ash blended self-compacting concrete. The coarse aggregate was replaced at a range of 30% by blast furnace slag aggregate and the various fresh and hardened concrete properties were determined and compared. From the results, it is recommended that 30% of slag aggregate can be effectively utilized for various self-compacting concrete applications.

scholarly journals Affect of Waste Tyre Rubber Recycle Properties of Concrete by Partial Replacement of Coarse Aggregate with Rubber

2019 ◽  
Vol 8 (12) ◽  
pp. 1984-1988
Keyword(s):  
Coarse Aggregate ◽  
Partial Replacement ◽  
Light Weight ◽  
Low Weight ◽  
Different Types ◽  
Long Time ◽  
Rubber Concrete ◽  
Rubber Aggregates ◽  
Split Tensile Test ◽  
Better Than

Rubber tires are produced excessively worldwide every year. It is not easy to remove rubber waste from environment because it causes environmental pollution and its decomposing takes long -time. The reuse of rubber is better than disposal. The waste rubber can be reuse as a coarse aggregate in concrete. This rubber concrete has elastic properties and strong gravity they can also be used has light weight bricks because rubber is in light weight hence it can be replaced coarse aggregate in percentages the weight of concrete reduced. The rubber replaced concrete can be study by conducting experiments on rubber replaced concrete cubes the experimental testes want to conduct on concrete are compressing test, split tensile test and flexible test. The number of unused tires from different types of vehicles increasing rapidly his one of the main environmental problems today. About 1 billion garbage tires thrown away every year, and it is estimated that about 1.2 billion will pass each year. In this study mechanical properties of rubber we came to know that the rubber aggregate using in concrete have an equal strength of ordinary concrete by adding rubber aggregates the weight of the concrete decreases and it can also use as low weight bricks.

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