scholarly journals Studi Literatur Potensi Pemanfaatan Terak Nikel (Slag Nikel) sebagai Agregat pada Mortar dan Beton

2021 ◽  
Vol 9 (2) ◽  
pp. 93-100
Author(s):  
Ratno Wijaya ◽  
Sotya Astutiningsih
Keyword(s):  
Mechanical Properties ◽  
Coarse Aggregate ◽  
Construction Materials ◽  
Fine Aggregate ◽  
Infrastructure Development ◽  
Literature Study ◽  
Digital Publication ◽  
Alternative Material ◽  
Lateritic Nickel ◽  
Increasing Demand

The increasing of infrastructure development has an impact on increasing demand for construction materials. Generally, construction materials come from nature and still being exploited, which could lead to environmental degradation. Visually, nickel slag resembles gravel and sand which can be used as an alternative material. Therefore, this literature study aims to determine the characteristics and potential utilization of nickel slag gathered from Indonesian lateritic nickel ore and its application as an aggregate in mortar and concrete. The method used in this study is a review of several literatures from a reputable digital publication database with the keywords "terak nikel" and "nickel slag". In addition, several criteria are also used as filters in order to get the more focused literatures. Although the fluctuations in its mechanical properties was reported, it can still be overcome by using slag nickel slag as coarse and fine aggregate simultaneously. The results also show that nickel slag can be used as fine or coarse aggregate in concrete up to 100% content as well and as fine aggregate in asphalt application mortars up to 50% content.

scholarly journals Mechanical Properties of Concrete with Substitution of Fine and Coarse Aggregate by Waste Materials in Concrete

2019 ◽  
Vol 8 (4) ◽  
pp. 5817-5820
Keyword(s):  
Mechanical Properties ◽  
Coarse Aggregate ◽  
Construction Materials ◽  
Copper Slag ◽  
Waste Materials ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
River Sand ◽  
Aggregate Concrete ◽  
Concrete Mixtures

Paper Construction industry has been conducted various studies on the utilization of waste materials in concrete productions in order to decrease the usage of natural resources. This research paper exhibits the evaluation and the effective reuse of waste construction materials and industries, such as cuddapah waste aggregate as partial replacement of conventional coarse aggregate and copper slag as partial replacement of river sand (fine aggregate). Experiments were conducted to find out the mechanical properties of concrete such as compressive, splitting tensile, flexural strengths and the modulus of elasticity of concrete for waste materials aggregate concrete and to compare them with those of conventional aggregate concrete. Results appear that waste materials in concrete have the potential to produce good quality concrete mixtures.

scholarly journals Predicting the Mechanical Properties of RCA-Based Concrete Using Supervised Machine Learning Algorithms

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 647
Author(s):  
Meijun Shang ◽  
Hejun Li ◽  
Ayaz Ahmad ◽  
Waqas Ahmad ◽  
Krzysztof Adam Ostrowski ◽  
...  
Keyword(s):  
Machine Learning ◽  
Mechanical Properties ◽  
Mean Square Error ◽  
Coarse Aggregate ◽  
Machine Learning Algorithms ◽  
Supervised Machine Learning ◽  
Environmental Damage ◽  
Fine Aggregate ◽  
Mean Square ◽  
The Impact

Environment-friendly concrete is gaining popularity these days because it consumes less energy and causes less damage to the environment. Rapid increases in the population and demand for construction throughout the world lead to a significant deterioration or reduction in natural resources. Meanwhile, construction waste continues to grow at a high rate as older buildings are destroyed and demolished. As a result, the use of recycled materials may contribute to improving the quality of life and preventing environmental damage. Additionally, the application of recycled coarse aggregate (RCA) in concrete is essential for minimizing environmental issues. The compressive strength (CS) and splitting tensile strength (STS) of concrete containing RCA are predicted in this article using decision tree (DT) and AdaBoost machine learning (ML) techniques. A total of 344 data points with nine input variables (water, cement, fine aggregate, natural coarse aggregate, RCA, superplasticizers, water absorption of RCA and maximum size of RCA, density of RCA) were used to run the models. The data was validated using k-fold cross-validation and the coefficient correlation coefficient (R2), mean square error (MSE), mean absolute error (MAE), and root mean square error values (RMSE). However, the model’s performance was assessed using statistical checks. Additionally, sensitivity analysis was used to determine the impact of each variable on the forecasting of mechanical properties.

Experimental Study on Mechanical Properties of Fine Aggregate Concrete Made after Wet-Sieving Coarse Aggregate

2010 ◽  
Vol 168-170 ◽  
pp. 2200-2203 ◽  
Author(s):  
Shun Bo Zhao ◽  
Na Liang ◽  
Li Xin Liu ◽  
Li Sun ◽  
Su Yang
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Coarse Aggregate ◽  
Fine Aggregate ◽  
Concrete Wall ◽  
Aggregate Concrete ◽  
Structural Wall ◽  
Ordinary Concrete ◽  
Reinforced Composite ◽  
Wet Sieving

The validity of the wet-sieving concrete technique for building the reinforced composite concrete wall are demonstrated in the paper. The fine aggregate concrete made by ordinary concrete passing the sieve with square mash of 15 mm was cast for the surface layer, the recomposed concrete mixed by the residual concrete stayed on the sieve with the ordinary concrete was cast for the reinforced concrete structural wall. The mechanical properties such as the cubic and compressive strengths, the elastic modulus and the splitting and flexural tensile strengths of the fine aggregate concrete, the recomposed concrete and the ordinary concrete were tested and analyzed. The results show that the elastic modulus and splitting tensile strength of fine aggregate concrete reduce in some extent compared with that of ordinary concrete, the mechanical properties of recomposed concrete are almost the same as that of ordinary concrete.

Performance Evaluation of Brick Chips as Coarse Aggregate on the Properties of Bituminous Mixes

2015 ◽  
Vol 2 (2) ◽  
Author(s):  
H. M. Rasel ◽  
M. A. Sobhan ◽  
M. N. Rahman
Keyword(s):  
Coarse Aggregate ◽  
Test Procedure ◽  
Road Construction ◽  
Strength Properties ◽  
Fine Aggregate ◽  
Large Area ◽  
Alternative Materials ◽  
Alternative Material ◽  
Feasible Option ◽  
Design Characteristics

In Bangladesh there is large area where stone aggregates are not available in the vicinity of road construction. Due to excessive cost on transportation of stone aggregates, road construction becomes expensive. This leads to search of alternative materials for road construction in place of stone aggregate. The locally available over burnt brick-bats are the best alternative material against stone aggregates in bituminous mixes. The demand of natural stone aggregates can be reduced by fresh brick and waste brick from brick-kiln and demolished building respectively. But a very fewresearches have been carried out toinvestigate their suitability and limited information's isavailable about their performances. Thus, this paper describes the technical feasibility on application of the brick aggregates in road construction as an alternative against natural aggregate. An experimental investigation is carried out to evaluate the possible application of fresh brick and waste brick as coarse aggregate in bituminous concrete pavement design and to find out its design characteristics. The research program concentrated on the existing practices relating to use of bricks in road construction, use of crushed bricks in substitution of whole bricks and replacement of stone aggregate with crushed brick wherever economically feasible. The strength properties of coarse aggregate, fine aggregate and Marshall Design properties of bituminous mixes were performed according to the test procedure specified by AASHTO. Dense bituminous mixes using compacted brick aggregate with 50 blows is found a feasible option from the standpoint of stability, stiffness, deformations and voids characteristics.

scholarly journals Feasibility of Developing Sustainable Concrete Using Environmentally Friendly Coarse Aggregate

2020 ◽  
Vol 10 (15) ◽  
pp. 5207
Author(s):  
Chamila Gunasekara ◽  
Charitha Seneviratne ◽  
David W. Law ◽  
Sujeeva Setunge
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Mechanical Performance ◽  
Drying Shrinkage ◽  
Strength Development ◽  
Design Strength ◽  
Coarse Aggregates ◽  
Increasing Demand ◽  
Quality Material

Quarry aggregate reserves are depleting rapidly within Australia and the rest of the world due to an increasing demand for aggregates driven by expansion in construction. The annual production of premix concrete in Australia is approximately 30 million cubic meters, while 3–5% of concrete delivered to site remains unused and is disposed of in landfill or crushing plants. The production of coarse aggregates using this waste concrete is potentially a sustainable approach to reduce environmental and economic impact. A testing program has been conducted to investigate mechanical performance and permeation characteristics of concrete produced using a novel manufactured coarse aggregate recycled directly from fresh premix concrete. The recycled coarse aggregate (RCA) concrete satisfied the specified 28-day design strength of 25 MPa and 40 MPa at 28 days and a mean compressive strength of 60 MPa at 90 days. Aggregate grading was observed to determine strength development, while low water absorption, low drying shrinkage, and higher packing density indicate that the RCA concrete is a high-quality material with a dense pore structure. The rough fracture surface of the aggregate increased the bond between C-S-H gel matrix and RCA at the interfacial transition zone. Furthermore, a good correlation was observed between compressive strength and all other mechanical properties displayed by the quarried aggregate concrete. The application of design equations as stated in Australian standards were observed to provide a conservative design for RCA concrete structures based on the mechanical properties.

scholarly journals Potential Use of Waste Cathode Ray Tube (CRT) Glass as Fine Aggregate in Concrete for Sustainable Built Environment: A Review

2020 ◽  
pp. 278-285
Keyword(s):  
Electronic Waste ◽  
Construction Materials ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Glass Waste ◽  
Comparative Performance ◽  
Natural Sand ◽  
Plasma Display ◽  
Increasing Demand ◽  
Natural Aggregates

Electrical and electronic waste (E-waste) has become a great matter of concern all around the world. Due to the fast growth in kinescope technology, Cathode Ray Tubes (CRTs) are being replaced by lighter and thinner panels with flat displays, namely – Light Emitting Diodes (LEDs), Plasma Display Panels (PDPs) and Liquid Crystal Displays (LCDs). The environmental hazards caused by CRTs waste generation have become an extensive dilemma around the globe. Lead is contained in sufficient amounts in the waste CRTs, which causes serious hazards to human health and the environment. The increasing demand for concrete and natural resources due to swift urbanization has made it crucial to replace the natural aggregates in concrete either as a partial replacement or total replacement, without affecting the concrete performance. CRT waste glasses are abundant in silica, have low water absorption property and adequate intrinsic strength. These characteristics of CRT waste glass make it apt for usage as pozzolan or sand in construction materials. They can be partially or totally replaced for natural sand as fine aggregate in concrete. This review work extends an in-depth summary of literature detailing the reuse of CRT glass waste as a fine aggregate replacement in concrete. The properties such as water performance, thermal property, strength and durability of CRT glass waste-based concrete and their method of manufacturing have also been studied in this paper. Furthermore, a comparative performance analysis of CRT glass waste concrete with other E-waste incorporated concrete has also been included in this paper. The current work shall contribute to enhancement towards sustainability and economic development of CRT glass waste incorporated concrete in the construction industry. Thus, the issues related to CRT glass waste such as contamination of soil, environment and water bodies, health issues caused to living beings and simultaneously, the degradation of natural restricted aggregate resources could be reduced considerably by several folds.

scholarly journals Pengaruh Cangkang Kerang Laut Terhadap Kuat Tekan Beton

2021 ◽  
Vol 2 (1) ◽  
pp. 46-54
Author(s):  
Neti Rahmawati ◽  
Irwan Lakawa ◽  
Sulaiman Sulaiman
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Building Materials ◽  
Coarse Aggregate ◽  
Fine Aggregate ◽  
Fine Aggregates ◽  
Concrete Quality ◽  
Compressive Strength Of Concrete ◽  
Physical Construction

Concrete is one of the most widely used building materials today interms of physical construction. Concrete is made from a mixture offine, coarse aggregate, cement, and water with a certain ratio, aswell as materials that are usually added to the concrete mixtureduring or during mixing, to changing the properties of concrete tomake it more suitable in certain jobs and more economical, can alsobe added with certain other mixed materials as needed if deemednecessary. Seashells can be used to mix concrete. This study aims todetermine whether the addition of shells aggregate shells in aconcrete mixture can affect the mechanical properties of concrete.The specimens used are in the form of cubes with a size of 15cm x 15cm x 15 cm, consisting of additional concrete coarse and fineaggregate with shell substitution percentage of 0%, 15%, 20% with atotal sample of 45, with the planned concrete quality of K225. Theuse of sea shells in increasing the compressive strength of concrete isbetter used as fine aggregate than coarse aggregate. The use of seashells as a substitute for fine aggregates achieves maximum resultsat 20% composition.

scholarly journals STUDY ON THE PROPERTIES OF CONCRETE WITH DEMOLISHED WASTES AND SUGARCANE BAGASSE ASH

2018 ◽  
Vol 6 (3) ◽  
pp. 220-227
Author(s):  
Suriya ◽  
Sneha ◽  
Mohan Kumar
Keyword(s):  
Sugarcane Bagasse ◽  
Coarse Aggregate ◽  
Raw Materials ◽  
Construction Materials ◽  
Industrial Wastes ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Test Results ◽  
Sugarcane Bagasse Ash ◽  
Increasing Demand

The increasing demand and scarcity of construction materials like cement and aggregates make the researches all over the world nowadays to focus on finding ways of utilizing industrial wastes and demolished wastes as source of raw materials and eco-friendly alternatives for concrete ingredients. Using recycled aggregates in concrete leads to preservation of the environment and promotes sustainable development. Recycled aggregate is obtained after crushing and screening of the construction rubble from tested laboratory specimens like cubes and cylinders. Sugarcane bagasse ash, the by-product of Sugarcane is the most fibrous material and contains alumina and silica. Bagasse ash used not only to reduce consumption of cement, cost of making concrete and pollution of the environment but also consumes the excess calcium present in the cement improving the durability related properties of concrete. In this work, mix design for conventional M20 grade concrete is made. Based on the literature survey, conventional coarse aggregate is partially replaced by 30% with recycled coarse aggregate. In this 30% recycled aggregate contained concrete, cement is partially replaced by 0, 5, 10, 15 and 20% with Sugarcane bagasse ash. Experimental study was carried out to investigate the mechanical properties. Based on the test results, the optimum replacement level of cement with Sugarcane bagasse ash is observed as 15% for overall efficiency.

scholarly journals Numerical Modeling on the Structural Performance of RCC Beams Made with SCC Produced By RCA as Coarse Aggregate

2019 ◽  
Vol 8 (4) ◽  
pp. 1903-1908
Keyword(s):  
Coarse Aggregate ◽  
Simulation Software ◽  
Recycled Concrete ◽  
Structural Performance ◽  
Concrete Aggregate ◽  
Infrastructure Development ◽  
High Rise ◽  
Alternative Material ◽  
Natural Aggregates ◽  
Source Materials

Economical status of a country mainly depends on the amount of investments made on the infrastructure development. Most of the high rise buildings constructed in our country have grown old and are being demolished or strengthened. The construction of new high rise structures will require huge amount of source materials like cement and fine and coarse aggregate. Especially, 8 – 12 billion tons of natural aggregates were consumed annually by the construction industry around the world. This may result in increased demand on the source materials and leading to various socioeconomic problems. On the other hand, disposal of concrete debris from the demolished high rise concrete structures requires large land area for open disposal. In order to solve these two problems, concrete debris from the demolished structures are processed and used as an alternative material to the coarse aggregate. The main objective of this study is to determine the structural performance of recycled concrete aggregate in self-compacting concrete (SCC) as a replacement for coarse aggregates.RCA is used as substitute for coarse aggregate at percentages ranging from 0 to 100%, at an interval of 20%. To evaluate the structural performance of RCC beams prepared with fibre reinforced SCC of grade M40 was tested experimentally and numerically. Numerical investigation on RCC beams was done in the simulation software ANSYS packages

scholarly journals PENELITIAN PENAMBAHAN BAHAN SERBUK DOLOMITE DAN PASIR BRANTAS PADA CAMPURAN ASPAL BETON

2019 ◽  
Vol 2 (2) ◽  
pp. 214
Author(s):  
Faisal Abdul Yusuf ◽  
Ahmad Ridwan ◽  
Yosef Cahyo Setianto Poernomo
Keyword(s):  
High Temperature ◽  
Portland Cement ◽  
Asphalt Concrete ◽  
Coarse Aggregate ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Maximum Level ◽  
Fine Aggregate ◽  
Alternative Material ◽  
Technical Specifications

Asphalt Concrete (Hotmix) is a mixture of coarse aggregate, fine aggregate, and filler (filler) with asphalt binder in high-temperature conditions (heat) with a composition that is examined and regulated by technical specifications. In this research, concrete asphalt mixture was added with dolomite powder as a  mixture in filler to be an alternative material for portland cement filler mixture to minimize the price of portal and cement, which is increasingly expensive, and brantas sand as fine aggregate to study and determine the effect of dolomite powder and brantas sand in the mixture asphalt concrete with the addition of levels of 5%, 10%, and 15%. From the results of the study obtained the value of adding dolomite powder with levels of 5%, 10%, 15% at VIM values of 11.99%, 15.28%, 10.29 , VMA value of 26.30%, 29.05%,  24.88%,  VFB  value  of  54.49%,  48.33%,  58.81%,  stability  value  of  3402.503  kg, 3294.030 kg, 1958.946 kg, MQ value 733,8130 kg, 456,1891 kg, 471,9089 kg and from the testing chart the optimum content is at levels 5.5% to 8% and the maximum level is at 5% level.Aspal  Beton  (Hotmix)  adalah  campuran  agregat  kasar,  agregat  halus,  dan  bahan pengisi (Filler) dengan bahan pengikat aspal dalam kondisi suhu tinggi (panas) dengan komposisi yang diteliti dan diatur oleh spesifikasi teknis. Pada penelitian ini, campuran aspal beton diberi bahan tambahan serbuk dolomite sebagai campuran pada filler agar menjadi bahan alternativ campuran filler semen portaland untuk meminimalisir harga semen portaland yang  semakin  mahal  dan  pasir  brantas  sebagai  agregat  halus  untuk  mempelajari  dan mengetahui pengaruh serbuk dolomit dan pasir brantas pada campuran aspal beton dengan penambahan kadar 5%, 10%, dan 15%.dari hasil penelitian didapat nilai penambahan serbuk dolomite dengan kadar  5%, 10%, 15% pada nilai VIM sebesar 11,99%, 15,28%, 10,29, nilai VMA 26,30%, 29,05%, 24,88%, nilai VFB 54,49%, 48,33%, 58,81%, nilai stabilitas 3402,503 kg, 3294,030 kg, 1958,946 kg, nilai MQ 733,8130 kg, 456,1891 kg, 471,9089 kg dan dari grafik pengujian kadar optimum pada kadar 5,5% sampai 8% dan kadar maximum pada kadar 5%.

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