Effect of Kota Stone Slurry Powder in Fresh and Hardened Concrete: A Review

2021 ◽  
Vol 18 (3) ◽  
pp. 253-265
Author(s):  
Arpita Ojha ◽  
Trilok Gupta
Keyword(s):  
Review Paper ◽  
Positive Impact ◽  
Construction Material ◽  
Hardened Concrete ◽  
Research Papers ◽  
Financial Cost ◽  
Split Tensile Strength ◽  
Concrete Production ◽  
Strength And Durability

Concrete is highly used construction material with cement being its major ingredient. Also, the demand for good quality of concrete is increasing because of the fast-growing urbanization. But there are certain problems associated with the manufacturing of cement. One of the major problems being production of carbon dioxide causing pollution in environment, the manufacturing of cement is quite expensive and it also leads to the depletion of resources. In order to curtail the consumption of cement, it has become inevitable to replace cement by certain amount with substituent materials that are cheaper to produce in order to lower down the financial cost of concrete production by some extent. The review paper, elaborates many properties of concrete by the inclusion of Kota stone slurry after evaluating several research papers. The following paper discusses numerous properties of concrete including workability, compressive strength, split tensile strength, water absorption and modulus of elasticity. The paper demonstrates that when used appropriately, inclusion of Kota stone slurry in concrete had a positive impact on concrete by increasing the strength and durability.

scholarly journals A Review on the Performance of Waste Glass as Partial Replacement of Fine Aggregate

2021 ◽  
Vol 1200 (1) ◽  
pp. 012011
Author(s):  
Norfaniza Mokhtar ◽  
Nurul Atikah Jalani
Keyword(s):  
Fresh Concrete ◽  
Positive Impact ◽  
Waste Glass ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Fine Aggregate ◽  
Research Papers ◽  
Split Tensile Strength ◽  
Pozzolanic Material ◽  
Waste Production

Abstract Waste glass is one of the biggest contributors in waste production in Malaysia which can be used as partial sand replacement in concrete. Silica exists in waste glass components made it becomes a pozzolanic material and suitable to be used in a concrete mixture. The performance of the waste glass as fine aggregate was reviewed by considering the workability of fresh concrete, the strength, and the splitting tensile of hardened concrete. The range of the replacement waste are 0%, 10%, 20% and 30%. The influence of the waste glass on the microstructure of the concrete also have been evaluated. A total of seventeen previous research papers were collected and review based on the parameters selected. The results shows that replacement of waste glass in concrete give a positive impact for all selected parameters with 20% replacement represent as an optimal percentage replacement. The microstructure of the waste glass concrete resulting that more voids created after 20% replacement of waste glass which affects the compressive strength and split tensile strength of the concrete thus make the optimum replacement percentage is 20% replacement.

scholarly journals The Impact of Meteorological Conditions on the Value of Fresh and Hardened Concrete

2018 ◽  
pp. 1-11
Author(s):  
Ezeliora, Chukwuemeka Daniel ◽  
B. O. Adinna ◽  
Ezenwa, V. Anayo
Keyword(s):  
Relative Humidity ◽  
Meteorological Condition ◽  
Hardened Concrete ◽  
Concrete Production ◽  
Strength Tests ◽  
The Hours ◽  
The Impact ◽  
Effective Supervision ◽  
Construction Practice

The learning scrutinizes the influence of meteorological situations on fresh and case-hardened concrete formed in the South East, Nigeria. The variables considered in the research are temperature as well as relative humidity. The meteorological condition parameters were gained from Nigerian Metrological Agency in Lagos, Nigeria. The middling yearly temperature oscillated 26.39ºC to 32.49ºC was used as a control for the experiment. Slump and strength tests were conducted on concrete samples and results exposed that workability and compressive strength of the concrete was affected by temperature and relative humidity. It was discovered that concrete manufactured in the sunrise hours (9 am-12 noon) when the temperature and relative humidity were little have better quality than those manufactured in the late afternoon (2-4 pm) as portrayed by the results of the tests on the tables. However, the research acclaims that Professionals and other stakeholders in the construction practice should be aware that temperature and relative humidity partake to influence the quality of concrete during production on site. The research also inaugurates that the suitable time to produce high-quality concrete is between the hours of 9 am-2 pm and any other time will call for the use of admixture to produce concrete of similar quality although of a higher cost thus, affecting the budget of the project. In conclusion, professionals in practice are recommended to ensure effective supervision during concrete production.

Optimalisasi Kuat Tekan dan Kuat Lentur Beton Menggunakan Campuran Lateks

2021 ◽  
Vol 4 (2) ◽  
pp. 159
Author(s):  
Ary Prastowo ◽  
Ahmad Ridwan ◽  
Edy Gardjito ◽  
Zendy Bima Mahardana
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Construction Material ◽  
Building Construction ◽  
Adhesive Properties ◽  
Concrete Mixtures ◽  
A Value ◽  
Concrete Production ◽  
Concrete Quality

Concrete is a building construction material that has an important role. Concrete itself tends to have strong properties in resisting compressive forces, but weak in resisting tensile or flexural forces. The use of additives in concrete is an option to improve the basic properties of concrete. Latex or rubber latex is one of the natural materials that can be used in concrete mixtures. Its adhesive properties can be utilized in improving the quality of concrete. This study aims to determine the compressive strength and flexural strength of concrete with the addition of latex. The research was conducted experimentally by making concrete specimens in the laboratory. The addition of latex by 10% and 30% with a planned concrete quality of fc' 29.5 MPa. The test object used is a cylinder measuring 15x30 cm and a beam measuring 15x15x30 cm. The tests carried out were testing the compressive strength and flexural strength at the age of 28 days. The results showed that the highest compressive strength was at the addition of 10% latex with a value of 9.96 MPa. While the highest flexural strength value obtained was 3.20 Mpa at the addition of 10% Latex or. From these results it can be seen that the addition of latex has not been able to improve the quality of concrete and has not been able to increase the compressive strength or flexural strength of concrete. So that these results can be used as research development or concrete production.

scholarly journals An Experimental Study on the Effects and Properties of Concrete by Replacement of Natural Sand with Robosand as Fine Aggregate

2018 ◽  
pp. 55-62
Author(s):  
S. N. Manjunath ◽  
D. Mohammed Rafi ◽  
A. B. S. Dadapeer
Keyword(s):  
Experimental Study ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Construction Material ◽  
Fine Aggregate ◽  
River Sand ◽  
Split Tensile Strength ◽  
Natural Sand ◽  
Flexural Tensile Strength ◽  
Strength And Durability

Concrete is the most widely used composite construction material. Fine aggregate plays a very important role for imparting better properties to concrete in its fresh and hardened state. Generally, river sand was used as fine aggregate for construction. Due to the continuous mining of sand from riverbed led to the depletion of river sand and it became a scarce material. Also, sand mining from river bed caused a lot of environmental issues. As a substitute to river sand, Robo sand has been used. In this present experimental study a comparative study has been carried out to check the usability of Robo sand in place of natural sand. This study involves determination of some major properties of concrete like compressive strength, split tensile strength, flexural tensile strength and durability in acidic medium made of both the sands. Based on proposed studies, quality of Robo sand is equivalent to natural sand in many respects, such as cleanliness, grading, strength, angularity, specific gravity. Conclusion have been arrived that Robo sand produced from VSI (vertical shaft impact or) is a suitable and viable substitute to river sand and could be effectively used in making concrete which provides adequate strength and durability for the concrete. In the design of concrete structures, concrete is taken into account by taking its compressive strength value. The compressive strength of the concrete made of Robo sand is observed to be very nearer to the strength of the concrete made of natural sand in the present investigation, there by 100% replacement is reasonable.

scholarly journals EFFECT OF VOLCANIC ASH AS PARTIAL REPLACEMENT OF CEMENT IN CONCRETE SUBJECT TO AGGRESSIVE CHEMICAL ENVIRONEMNT

2021 ◽  
Vol 6 (5) ◽  
Author(s):  
Agboola Shamsudeen Abdulazeez ◽  
Amina Omolola Suleiman ◽  
Simdima Gabriel Gideon ◽  
Solomon Wutong Poki
Keyword(s):  
Compressive Strength ◽  
Volcanic Ash ◽  
Setting Time ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Target Strength ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Split Tensile Strength ◽  
Concrete Production

- Presently researches all over the world is concentrating on alternative materials as partial cement replacement in concrete production. The use of pozzolanic material in concrete is becoming increasingly important because of the need for more sustainable cementing products. Volcanic ash is a form of natural pozzolan and has a chemical composition comparable to other supplementary cementitious materials. In this paper, volcanic ash was used to partially replace cement in the ratio of 0%, 5%, 10%, 15% and 20% by volume in concrete and cured in H2SO4 and MgSO4 environment. 28-day target strength was adopted and concrete tested at 7, 14, 28 and 56 days’ hydration period. Specific gravity, bulk density and setting time test on volcanic ash were carried out. Fresh concrete tests such as slump and compacting factor test were carried out along-side hardened concrete tests like compressive strength and split tensile strength. The result shows that the maximum compressive strength at 28 days was at 0% control concrete, while at 56 days the maximum strength was observed at 10% replacement of cement with volcanic ash and it is considered as optimum percentage replacement.

scholarly journals Researches in Effluence and Environmental flow of Turag River – a review

2020 ◽  
Vol 19 (1) ◽  
pp. 25-32
Author(s):  
M. Mostafizur Rahman ◽  
Amena Ferdousi ◽  
Mohammad Abdur Rob ◽  
Muhammad Mahfuz Hasan
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
River Water ◽  
Review Paper ◽  
Environmental Flow ◽  
Research Papers ◽  
Wide Range ◽  
Domestic Effluents

Articles regarding water pollution of Turag river have been reviewed and compiled as a review paper from various published articles of international reputed journals annual/environmental reports of recognized organization and e-books. Besides, this work finds the interpretation of data and discussions published in different research papers. The water of Turag river is not fit for washing, underwater life and domestic supply because of the sever effect of the release of untreated industrial and domestic effluents. The water quality of Turag river. A wide range of contaminants are continuously introduced into the Turag river and their toxicity is a problem of increasing significance for ecological, evolutionary, and environmental reasons. The prevailing condition of the river is of serious concern, and there is an urgent need to take strict measures to ensure cleansing of the river and prevent further contamination.  This review work provides views and proposals to explain the assessment of water pollution of river water.

scholarly journals The Effect of Seawater on The Compressive Strength and Split Tensile Strength in Self Compacting Geopolymer Concrete

Jurnal CIVILA ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 197
Author(s):  
Herwina Rahayu Putri ◽  
Firman Paledung ◽  
Erniati Bachtiar ◽  
Popy Indrayani
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fly Ash ◽  
Room Temperature ◽  
Construction Material ◽  
Geopolymer Concrete ◽  
Split Tensile Strength ◽  
Coarse Aggregates ◽  
Binder Ratio

Fly ash is a kind of trash that may degrade the quality of the air. As a result, it is critical that it be used as an ecologically beneficial material. Although cement is the most often used construction material, its manufacturing generates carbon dioxide, which may degrade air quality. The aim of this research was to evaluate the compressive strength and split tensile strength of self-compacting geopolymer concrete (SCGC) cured in seawater, as well as to compare SCGC with and without saltwater. In this research, a cylindrical specimen with a diameter of 10 cm and a height of 20 cm was utilized as the specimen. Fly ash is used in proportion to fine and coarse aggregates at a ratio of 1: 0.65: 1.5. Using a 0.4 activator to binder ratio. The molarity ranges utilized were 11 M, 12 M, 13 M, 14 M, and 15 M. Compressive strength and split tensile strength tests were conducted on 28-day-old concrete. The findings indicated that when the molarity of SCGC treated with seawater increased from 11 to 15 M, the compressive and split tensile strengths increased. Compressive strength values were greatest in SCGC treated at room temperature when an activator of 13 M was used, and compressive strength values dropped in SCGC treated at room temperature when an activator greater than 13 M was used

Strategic Role of Zakat in Multidimensional Quality of Life in Sijunjung, Indonesia

2018 ◽  
Vol 15 (1) ◽  
pp. 55-72
Author(s):  
Herlin Hamimi ◽  
Abdul Ghafar Ismail ◽  
Muhammad Hasbi Zaenal
Keyword(s):  
Quality Of Life ◽  
Positive Impact ◽  
Wealth Distribution ◽  
Absolute Poverty ◽  
Before And After ◽  
The Status ◽  
Being There ◽  
The Impact

Zakat is one of the five pillars of Islam which has a function of faith, social and economic functions. Muslims who can pay zakat are required to give at least 2.5 per cent of their wealth. The problem of poverty prevalent in disadvantaged regions because of the difficulty of access to information and communication led to a gap that is so high in wealth and resources. The instrument of zakat provides a paradigm in the achievement of equitable wealth distribution and healthy circulation. Zakat potentially offers a better life and improves the quality of human being. There is a human quality improvement not only in economic terms but also in spiritual terms such as improving religiousity. This study aims to examine the role of zakat to alleviate humanitarian issues in disadvantaged regions such as Sijunjung, one of zakat beneficiaries and impoverished areas in Indonesia. The researcher attempted a Cibest method to capture the impact of zakat beneficiaries before and after becoming a member of Zakat Community Development (ZCD) Program in material and spiritual value. The overall analysis shows that zakat has a positive impact on disadvantaged regions development and enhance the quality of life of the community. There is an improvement in the average of mustahik household incomes after becoming a member of ZCD Program. Cibest model demonstrates that material, spiritual, and absolute poverty index decreased by 10, 5, and 6 per cent. Meanwhile, the welfare index is increased by 21 per cent. These findings have significant implications for developing the quality of life in disadvantaged regions in Sijunjung. Therefore, zakat is one of the instruments to change the status of disadvantaged areas to be equivalent to other areas.

Exercise Capacity in Chronic Heart Failure

2012 ◽  
Vol 9 (1) ◽  
pp. 57-60 ◽  
Author(s):  
Gina G Mentzer ◽  
Alex J Auseon
Keyword(s):  
Quality Of Life ◽  
Heart Failure ◽  
Exercise Training ◽  
Exercise Capacity ◽  
Positive Impact ◽  
Pharmacologic Therapy ◽  
The Past ◽  
Diagnosis And Prognosis ◽  
Future Therapy

Heart failure (HF) affects more than 5 million people and has an increasing incidence and cost burden. Patients note symptoms of dyspnea and fatigue that result in a decreased quality of life, which has not drastically improved over the past decades despite advances in therapies. The assessment of exercise capacity can provide information regarding patient diagnosis and prognosis, while doubling as a potential future therapy. clinically, there is acceptance that exercise is safe in hf and can have a positive impact on morbidity and quality of life, although evidence for improvement in mortality is still lacking. specific prescriptions for exercise training have not been developed because many variables and confounding factors have prevented research trials from demonstrating an ideal regimen. Physicians are becoming more aware of the indices and goals for hf patients in exercise testing and therapy to provide comprehensive cardiac care. it is further postulated that a combination of exercise training and pharmacologic therapy may eventually provide the most benefits to those suffering from hf.

Investigational Studies on Quantity of Salinity in Netravati River Estuary Sand-Coastal Karnataka

2018 ◽  
Vol 6 (6) ◽  
pp. 46
Author(s):  
Raveesha P ◽  
K. E. Prakash ◽  
B. T. Suresh Babu
Keyword(s):  
Brackish Water ◽  
Sea Water ◽  
Salt Water ◽  
Construction Material ◽  
Salt Content ◽  
River Estuary ◽  
Sand Sample ◽  
River Sand ◽  
Natural Aggregates

The salt water mixes with fresh water and forms brackish water. The brackish water contains some quantity of salt, but not equal to sea water. Salinity determines the geographic distribution of the number of marshes found in estuary. Hence salinity is a very important environmental factor in estuary system. Sand is one major natural aggregate, required in construction industry mainly for the manufacture of concrete. The availability of good river sand is reduced due to salinity. The quality of sand available from estuarine regions is adversely affected due to this reason. It is the responsibility of engineers to check the quality of sand and its strength parameters before using it for any construction purpose. Presence of salt content in natural aggregates or manufactured aggregates is the cause for corrosion in steel. In this study the amount of salinity present in estuary sand was determined. Three different methods were used to determine the salinity in different seasonal variations. The sand sample collected nearer to the sea was found to be high in salinity in all methods.  It can be concluded that care should be taken before we use estuary sand as a construction material due to the presence of salinity.

Sign in / Sign up

Export Citation Format

Share Document