scholarly journals The Influence of Aluminum Slag Ash for Paving Block Production

2021 ◽  
Vol 933 (1) ◽  
pp. 012014
Author(s):  
N Muzayyanah ◽  
F B Maziya ◽  
Y Yuriandala ◽  
Kasam

Abstract Aluminum slag ash commonly used as road and river embankments. It had disposed in an open site and potentially increase ammonia, sodium, potassium, chloride and total dissolved solids levels in the surrounding environment. As much as 90% of Portland cement is composed of a mixture of elements of Ca, Si, Al, and Fe which are bonded into certain complex compounds. This study aims to analyze the influence of cement substitution with aluminum slag ash on the compressive strength and water absorption capacity of the paving block, and the appropriate type of paving block quality which is following SNI 03-0691-1996. The test objects used were paving blocks with a ratio of cement and sand of 1:3, where the composition of the addition of aluminum slag ash used was 5%; 10%; 15%; and 20%. The tests in this study were on compressive strength, water absorption capacity, and Toxicity Characteristic Leaching Procedure (TCLP) tests. The optimum composition is 10% aluminum slag ash in cement substitution. The type of quality is category B paving for parking equipment. The results of the TCLP on a 10% composition paving obtained that the parameter concentration is below the TCLP quality standard.

Author(s):  
Adegbenle Bukunmi O

Laterite samples from Ede area with particle components of 19.7% clay, 32.8% silt and 47.5% sand was stabilized with combined cement, lime and bitumen and test for Compressive strength, Linear Shrinkage, Permeability and Water Absorption. The stabilizers were mixed with laterite soil in different ratios and percentage. The laterite carried 90% which is constant while the three stabilizers shared the remaining 10% in varying form. After 28 days of curing, laterite stabilizer with 90% of laterite, 8% of cement, 1% lime and 1% bitumen (LCLB1) possessed compressive strength of 2.01N/mm2. It Water Absorption Capacity was 3.05%. LCLB4 stabilizer (90% laterite, 6% cement, 2% lime and 2% bitumen) has the same compressive strength with LCLB1 stabilizer but with a high Water Absorption Capacity of 4.2%. The stabilizer of 90% laterite, 3.33% cement, 3.33% lime and 3.33% of bitumen (LCLB8) has the lowest compressive strength of 0.74N/mm2 and the highest Water Absorption Capacity of 5.39%. The results shows that LCLB1 stabilizer is a better stabilizer for strength and blocks made from laterite stabilized with it stand a good alternative to sand Crete blocks in building constructions. The combination of these stabilizers in order to determine a most economical volume combination for optimum performance is highly possible and economical.


Author(s):  
Youssef El Moussi ◽  
Laurent Clerc ◽  
Jean-Charles Benezet

The use of bio-based concretes performed with lignocellulosic aggregates constitute an interesting solution for reducing the energy consumption, greenhouse gas emissions and CO2 generated by the building sector. Indeed, bio-based materials could be used as an alternative of traditional materials such as expended polystyrene and mineral resources (e.g. glass and rock wools) for insulation. Furthermore, these bio-based concretes are known for their interesting insulation properties, indeed they allow to enhance thermal properties of buildings and enables moisture management which lead to design efficient building materials. For this purpose, bio-based concrete using rice straw as aggregate are studied in this present work. The impact of the characteristics of rice straw particle (particle size distribution, bulk density, and water absorption capacity, etc.) on both the mechanical and thermal properties of the bio-based concrete are investigated. Five formulations of rice straw concrete are examined, compared and then classified in terms of insulation properties and mechanical properties. The assessments are based on the measurement of density and thermal conductivity. The variation of compressive strength in function of the characteristics (mean particle length) of rice straw particle are assessed and discussed. The investigation covers also the porosity and density. Tests are also carried out on agricultural by-products with a view to highlight their chemical, physical and structural proprieties. The results show that the use of large particles with low water absorption capacity induce lighter concretes with the density between 339 and 505 kg/m3 and lead to a high compressive strength with a high mechanical deformability. Furthermore, it appears that an increase in the average length of rice straw particle lead to decrease of thermal conductivity of bio-based concretes. It varies from 0.062 to 0.085 W/(m.K).


Author(s):  
Jen Ling ◽  
Yong Lim ◽  
Wen Leong ◽  
How Sia

Silica fume (SF) and palm oil empty fruit bunch (EFB) are the by-products of the ferroalloy smelting industry and oil palm plantation, which require proper disposal to minimize the environmental impacts. To consume the by-products, the feasibility of utilizing SF and EFB to fabricate bricks was studied. Limited studies were adopting EFB as the natural fibres in bricks and its pro-portion barely exceeded 5%. With the enhancement of SF, EFB content in the mix could be increased. In this study, 336 specimens were produced in the cement-to-sand (c/s) ratios of 1:2.5 and 1:3, where SF replaced 10% to 15% cement in the mix by weight while EFB substituted 20% to 25% sand by volume. The specimens were tested for the compressive strength, density, and water absorption properties. SF was found to strengthen the mix, while EFB reduced the compressive strength and increased the water absorption capacity of the brick. Based on the evaluation results, the mix containing less than 10% SF and 20% EFB content was applicable for non-load-bearing brick.


2019 ◽  
Vol 6 (1) ◽  
pp. 1608687 ◽  
Author(s):  
David O. Nduka ◽  
Opeyemi Joshua ◽  
Adekunle M. Ajao ◽  
Babatunde F. Ogunbayo ◽  
Kunle E. Ogundipe ◽  
...  

Silicon ◽  
2020 ◽  
Author(s):  
Temitope Funmilayo Awolusi ◽  
Lanre Oluwaseyi Oke ◽  
Olufunke Olanike Akinkurolere ◽  
Dawodu Prince Ubani ◽  
Raphael Temitayo Bamisaye ◽  
...  

Today, the world is facing a huge threat due to solid wastes. The most dangerous material identified, among all types of waste is, Plastic. From UN report, every year the globe uses 500 billion plastic bags while, half of the plastic utilized is of single use only. In India, 70 percent of total plastic used is discarded as a waste. Around, 9.47 million tonnes per annum (TPA) of plastic waste is generated in the country, which is about 25940 tonnes per day (TPD). The 70 percent of the world’s plastic mass eventually sinks in ocean, damaging life on the seabed. Considering the present state of affairs worldwide, the recent research is focused on, how the waste material like plastic can be utilized, for making bricks and enhanced its compressive strength. Thus the ultimate goal of this study is, to create a positive social, economic and environmental impact, using molten plastic waste, while also remaining profitable and viable as business. An attempt was made to study the characteristics of bricks made of Sand, Moorum, Quarry dust and Iron chips with varying volume of Plastic as 20%, 25%, 30% and 35%. A step by step procedure is adopted to perform various Indian Standard code recommended important tests on the above stated plastic bricks (varying percentage). The compressive strength and water absorption capacity of bricks made with above stated % of plastic was determined. The study concludes and highlighting the fact that, the bricks having 30% plastic with 70% Moorum gives maximum compressive strength and for bricks 35% of plastic with 65% Sand give minimum compressive strength in 7 days. The study also indicates that, as the percentage of plastic increases, water absorption capacity of bricks decreases. The bricks made from plastic were susceptible against temperature so it used for construction in the cold region.


2011 ◽  
Vol 2 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Borhan M.M. ◽  
Mohamed Sutan N.

This study investigates the effects of polymer additives namely polyvinyl acetate (PVAc) on water absorption and compressive strength of mortar. Twelve mortar mixtures were investigated for water absorption test and compressive strength test. Results showed that water absorption were inversely proportional to the percentage of PVAc addition. Final analysis showed that addition of PVAc had significant effects on water absorption. Samples with 1%, 3% and 5% addition of PVAc showed an increase of water absorption capacity in comparison to control mortar.


Author(s):  
Raka Candra Fitrian ◽  
Agung Sumarno

Redbrick is one of the building materials which is commonly used as a basic building material. In the traditional red brick factory in the village of Singgahan Tuban, East Java, some problems are often encountered in the field, namely red bricks that are cracked and broken on the bricks at the bottom of the pile. This has an impact on results that are not on target. The purpose of this study was to determine the effect of wood sawdust and hydroton substitution on the compressive strength, density, and water absorption capacity of redbrick. Using an experimental method with a substitution ratio of wood sawdust and hydroton of 5%, 10%, and 15%. Manufacture of 50 red bricks measuring 23 x 11 x 4.5 cm. The drying process is carried out for 5 days then burned at 900° C for 2 days. From the test, it was found that the red brick without substitution had a compressive strength value of 8.95 MPa, a density value of 1.59 grams / cm³, and a water absorption capacity of 11.14%. The red brick substitution of wood sawdust waste has a compressive strength value of 6.25 MPa, a density value of 1.48 grams / cm³ and a water absorption capacity of 12.04%. In the red brick, the hydroton substitution has a compressive strength value of 9.27 MPa, a density value of 1.64 grams/cm air, and a water absorption capacity of 11.22%.


2014 ◽  
Vol 584-586 ◽  
pp. 1388-1391
Author(s):  
Fei Guo ◽  
Wen Bin Wang ◽  
Jia Ping Liu ◽  
Qian Tian ◽  
Lei Li

Using SAP is considered as an effective method to counteract autogenous shrinkage of HPC, but the research on the relationship between the water absorption capacity of SAP and the amount of entrained water in HPC is still unclear. In this paper, 6 SAPs with different water absorption capacity were made to discuss the workability and mechanical property of HPC with SAP when different amount of water were entrained. The results showed that the bigger distilled water absorption capacity of SAP is, the smaller the fluidity of cement paste mixed with SAP is, SAP used in HPC should own bigger synthetic pore fluid absorption capacity and smaller distilled water absorption capacity. When 0.03g water/g cement was entrained, the slump of concrete mixed with 4#, 5# and 6# SAP is the same as the slump of ref concrete, and the compressive strength of concrete mixed with 4#, 5# and 6# SAP is also the same as the compressive strength of ref concrete.


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