Preparing and Characterization of the Geopolymer Based on Desulfurization Ash and Fly Ash

2010 ◽  
Vol 150-151 ◽  
pp. 1599-1602
Author(s):  
Ji Xing Xie ◽  
Jun Jing Chen ◽  
Jian Zhong Xu
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Crystalline Phase ◽  
Strength Test ◽  
Mass Ratio ◽  
Compressive Strength Test ◽  
Main Crystalline Phase ◽  
The Matrix

The desulfurization ash, fly ash and metakaolin were uesd to prepare the geopolymer. Compressive strength test demonstrated that the optimum mass ratio of desulfurization ash, fly ash and metakaolin was 30:55:10 and the max strength reached 17.3 MPa. The XRD and SEM show that there is not new crystalline phase. The main crystalline phase of the matrix is non-reacted mullite in the fly ash. It was suggested that the emission of CO2 and SO2 were rehabited from geopolymer by analysis of those compositions volatilizing using TG/MS.

scholarly journals Characterization and compressive strength of fly ash based-geopolymer paste

2018 ◽  
Vol 195 ◽  
pp. 01023 ◽  
Author(s):  
Ari Widayanti ◽  
Ria Asih Aryani Soemitro ◽  
Hitapriya Suprayitno ◽  
Januarti Jaya Ekaputri
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Room Temperature ◽  
Chemical Resistance ◽  
Combustion Process ◽  
Mass Ratio ◽  
Alkali Activator ◽  
Compressive Strength Test ◽  
Geopolymer Paste

Fly ash is a by-product obtained from coal combustion process. Some of the utilization of fly ash is to produce geopolymer products which have high compressive strength, fire, chemical resistance. This paper proposes fly ash from unit 1-7 Suralaya Power Plant Indonesia. The aims of this study are to obtain characterization of fly ash and mechanical properties of geopolymer paste based on variations of the alkali activator ratio. The method was based on previous research and laboratory investigation. XRF and compressive strength were analysed in this study. Alkali activator was obtained from NaOH and Na2SiO3 mixture. The ratio of Na2SiO3 to NaOH was in the range of 0.5-2.5. Geopolymer paste was casted in acrylic cylinders with a diameter of 2 cm and a height of 4 cm. The curing was conducted at room temperature until the day for the compressive strength test at 28 days. The result showed that the fly ash is classified as F class. Increasing the alkali activator ratio influenced the strength. The best composition of geopolymer paste is made with NaOH 8M, and the mass ratio of Na2SiO3 to NaOH is 2.5. This composition produced compressive strength of 98.6 MPa.

scholarly journals Effect of nano CaCO3 on durability of concrete

2020 ◽  
Vol 165 ◽  
pp. 03029
Author(s):  
Jiangong Yang
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Test Data ◽  
Building Materials ◽  
Strength Test ◽  
Practical Application ◽  
Compressive Strength Test ◽  
Different Content ◽  
Durability Of Concrete

Through comparatively analyzing the impermeability and compressive strength test data of nano CaCO3 concrete with different content, this paper puts forward the method of optimizing the durability of nano CaCO3 concrete, and studies the influence of the content of fly ash on the durability of nano CaCO3 concrete on this basis, so as to provide a reference for improving the durability of concrete, so as to improve the recycling and reusing efficiency of building materials, and accelerate the practical application of nano CaCO3 concrete in engineering.

Study on the Strength Characteristics of Sludge Solidification

2015 ◽  
Vol 744-746 ◽  
pp. 628-631
Author(s):  
Yi Xiang Chen ◽  
Kai Xi An ◽  
Ke Xin Zhou ◽  
Chen Hao Xu
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Unconfined Compressive Strength ◽  
Strength Test ◽  
Experimental Results ◽  
Strength Characteristics ◽  
Curing Agent ◽  
Foundation Treatment ◽  
Compressive Strength Test ◽  
Stabilized Soil

In order to reveal the effect of type of admixture and its content on the strength of stabilized soil, this paper uses the sludge as raw soil and cement, fly ash as curing agent, and analyzes the strength characteristics of samples mixed stabilized according to certain content. Using the unconfined compressive strength test, the compressive strength of the samples is tested. The effect of curing agent type and its content on the compressive strength is investigated. From the experimental results, it can be seen that the content of cement and fly ash has much effect on the strength. The conclusions obtained can have some conference values on the foundation treatment and reuse of waste resources utilization.

The Influence of Fly Ash and Aggregates Composition on Pervious Concrete Characteristics

2018 ◽  
Vol 917 ◽  
pp. 297-302
Author(s):  
Jul Endawati ◽  
R. Utami ◽  
Rochaeti
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Research Result ◽  
Strength Test ◽  
Pervious Concrete ◽  
Fine Aggregate ◽  
Fine Aggregates ◽  
Compressive Strength Test ◽  
Binder Composition ◽  
Permeability Rate

Fly ash as a pozzolanic waste material can be utilized to substitute part of Portland cement in concrete mixture. The concrete paving industry utilizes the fly ash up to 50% (by weight) of the total binder. This study aims to obtain the characteristics of fly ash applications for pervious concrete. The composition of the binder developed based on the optimal proportion of fly ash from the previous study and the maximum of fly ash percentage used by the local paving industry in general. Other mix variations were made of the same binder composition with the addition of 6% of fine aggregates. The compressive strength of pervious concrete which binder composed of 63% portland cemet composite-25% fly ash-12% silica fume gained at 28 days, was not much different from the compressive strength of the pervious concrete without fine aggregate and with the binder composition of 50% FA-50% PCC and 0% SF. The value of the compressive strength test of the pervious concrete without fine aggregate is still within the range of compressive strength values ​​according to the ACI 522 R-10. The permeability rate of the pervious concrete is in the range of permeability research result of Chopra, 2013 (0.97 ÷ 1.90 cm/sec), but still higher compared to permeability rate gained by Dewoolkar, 2009 (0.83 ÷ 0.98 cm/sec).

scholarly journals SOLIDIFIKASI DEINKING SLUDGE DAN FLY ASH BATU BARA UNTUK PEMENUHAN PERSYARATAN PENIMBUNAN DI LANDFILL

2016 ◽  
Vol 1 (02) ◽  
Author(s):  
Krisna Adhitya Wardhana ◽  
Sri Purwati ◽  
Saepulloh , ◽  
Toni Rachmanto
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Portland Cement ◽  
Alternative Treatment ◽  
Coal Fly Ash ◽  
Hazardous Materials ◽  
Strength Test ◽  
Hazardous Wastes ◽  
Compressive Strength Test ◽  
Filter Test

Deinking sludge and coal fly ash are classified as hazardous wastes that have to be treated before disposed in landfill. Solidification is an alternative treatment to prevent hazardous materials release to the environment. The research was conducted to find solidification combination formula of deinking sludge and coal fly ash that pass compressive strength test (>10ton/m2) and paint filter test so it can be disposed to landfill. The concretes were made from cement and aggregate (50% deinking sludge and 50% fly ash) on range combination 1:11 - 1:20. In addition, based on pozzolanic characteristic of fly ash, concretes without cement was made. The results showed that solidification products with combination 1:11 - 1:20 have compressive strength that exceed the regulation and passed paint filter test. Combination of 50% deinking sludge and 50% coal fly ash without portland cement addition had compressive strength that met requirement for landfill disposal.Key words : deinking sludge, fly ash, solidification, landfill ABSTRAKDeinking sludge dan fly ash batubara termasuk kedalam kategori limbah B-3 yang harus diolah terlebih dahulu sebelum ditimbun di landfill. Proses solidifikasi adalah salah satu pengolahan untuk mencegah tersebarnya kandungan limbah B-3 ke lingkungan. Tujuan dari penelitian ini adalah menentukan formulasi solidifikasi kombinasi deinking sludge dengan fly ash batubara yang memenuhi persyaratan kuat tekan (> 10 ton/m2) dan uji paint filter sehingga dapat ditimbun di landfill. Penelitian ini dilakukan dengan variasi perbandingan semen terhadap agregat (50% fly ash dan 50% deinking sludge) mulai dari 1:11 sampai dengan 1:20 dan juga dilakukan perlakuan agregat tanpa semen. Hasil penelitian menunjukkan bahwa komposisi 1:11 s/d 1:20 memiliki nilai kuat tekan yang jauh melebihi persyaratan dan lolos uji paint filter. Sedangkan hasil dari perlakuan tanpa semen menunjukkan bahwa kombinasi 50% deinking sludge dan 50% fly ash batubara telah memiliki nilai kuat tekan yang cukup besar dan memenuhi persyaratan penimbunan di landfill.Kata kunci : deinking sludge, fly ash batubara, solidifikasi, landfill 

The Influence of Chloride Environment on Compressive Strength of Geopolymer Concrete with Fly Ash Using Taguchi Approach

2015 ◽  
Vol 754-755 ◽  
pp. 400-405 ◽  
Author(s):  
Ridho Bayuaji ◽  
Muhammad Sigit Darmawan ◽  
Boedi Wibowo ◽  
Nur Ahmad Husin ◽  
Srie Subekti ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Design Method ◽  
Construction Material ◽  
Strength Test ◽  
National Standard ◽  
Concrete Composition ◽  
Compressive Strength Test ◽  
Experimental Design Method ◽  
Chloride Environment

This study is conducted to determine the effect of four variables on compressive strength of geopolymer concretes. These four variables are binder/aggregate, Alkalinene/fly ash, effect of superplasticizer (SP) addition and curing system. The compressive strength is important mechanical properties for construction material. Taguchi experimental design method is used to compile the concrete composition of geopolymer to achieve the maximum compressive strength. Specimens concrete used is a cylinder with 100 mm diameter and 200 mm height. Compressive strength test is performed at 28 day using SNI 03-6825-2002, Indonesian National Standard. This study concludes that the chloride environment has a beneficial effect on the compressive strength of the concrete. In addition, the Alkalinene/fly ash ratio and binder/aggregate give a significant effect on the compressive strength of geopolymer concretes.

scholarly journals ANALISIS KUAT TEKAN DAN DENSITAS BETON NON-PASIR DENGAN CAMPURAN VARIAN ABU TERBANG MENGGUNAKAN MATLAB

2020 ◽  
Vol 14 (1) ◽  
pp. 18
Author(s):  
Nahari Rasif ◽  
Indri Silvia Dewi ◽  
Nisya Aviani ◽  
Widya Utama
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Strength Test ◽  
Compressive Strength Test ◽  
Average Compressive Strength ◽  
Test Objects

This study aims to determine how the properties of non-sand concrete with variations in the amount of mixing fly ash. This property was analyzed by compressive strength test. We also do calculations using the MATLAB application with interactive script methods. There are 16 numbers of test objects conducted in this study. The specimen is cylindrical with a size of 7.5 cm and a height of 15 cm. Flying ash variations used ranged from 0%, 25%, 50%, and 75%. In this research, we use 1: 6 between cement and gravel. The results of the average compressive strength obtained in the mixture of 0% fly ash are 1,172 MPa, 25% 0.871 MPa, 50% 2,367 MPa and 1,465 MPa for mixture of 75% fly ash. The best compressive strength results on the 50% fly ash mixture. The density is also affected by the mixing of this fly ash. The greater the mixing of the fly ash, the smaller the density value. Keywords: compressive strength, density, fly ash, MATLAB

scholarly journals STABILIZATION OF DRY SLUDGE OF LIQUID WASTE OF LEATHER TREATMENT BY USING FLY ASH

2010 ◽  
Vol 5 (1) ◽  
pp. 36-40
Author(s):  
Cahya Widiyati ◽  
Herry Poernomo
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Solid Waste ◽  
Liquid Waste ◽  
Toxic Waste ◽  
Leaching Test ◽  
Waste Concrete ◽  
Compressive Strength Test ◽  
American Nuclear Society

The experiment of solidification of dry sludge of liquid waste of leather treatment are containing chrome (Cr) by using fly ash has been done.  The experiment objective are immobilize Cr in the solid waste by using pozzoland cement was made of fly ash in order to stable in the repository.  The experiment were carried out by solidification of solid waste are containing total chrome of 1480.5 mg/kg sum of 2 - 10 weight % of (water + pozzoland cement) by using pozzoland cement was made from the mixture of fly ash and calcite were burned at 1000 oC temperature for 2 hours.  The characterization of the solid composite of stabilization result consist of the compressive strength test and the leaching test by American Nuclear Society (ANS-16.1) method.  The experiment result were shown that pozzoland cement  can binding solid waste sum of 10 weight % of (water + pozzoland cement) became the composite of waste concrete with the compressive strength of 577 ton/m2 and the chrome leaching test for 14 days of 0.059 mg/l.  The composite of waste concrete according to Bapedal rule for solidification of toxic waste with minimum compressive strength of 10 ton/m2 and maximum leached chrome of 5 mg/L.   Keywords: stabilization, solid waste, leather treatment, fly ash.

scholarly journals Pengaruh Penggunaan Fly Ash dari Berbagai Sumber terhadap Sifat Kimia dan Sifat Fisika pada Semen Tipe I (OPC)

2020 ◽  
Vol 11 (2) ◽  
pp. 61-71
Author(s):  
Yulizar Yusuf ◽  
Vivin Firman Savitri ◽  
Hermansyah Aziz
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Physical Properties ◽  
Main Parameter ◽  
Strength Test ◽  
Type I ◽  
Cement Type ◽  
Compressive Strength Test ◽  
Cement Mixture

The aim of this study is to utilize fly ash from various sources on chemical and physical properties of cement type I (OPC). Utilization of fly ash can improve the strengthness of the cement. It can reduce the waste of fly ash by utilization into cement process. The procedure has been carried out on cement type I (OPC) with the addition of fly ash additives from various sources with concentration variations such as 10% and 20%. Utilization of fly ash as additives substance in cement works to improve the quality of cement. The main parameter in determining the quality of cement is determined by the compressive strength. The results of the compressive strength test showed that the addition of fly ash with a concentration of 10% had a higher effect on the compressive strength than the addition of a concentration of 20%. 5 types fly ash from various sources, fly ash from PT Sinar Mas gives greater compressive strength at 28 days. the addition of fly ash additives to OPC cement mixture has chemical and physical properties which are not much different from properties of PCC cement.

scholarly journals The effect of curing on compressive strength of geo-polymer mortar made rice straw ash, fly ash, and laterite soil

2021 ◽  
Vol 921 (1) ◽  
pp. 012009
Author(s):  
P R Rangan ◽  
R Irmawaty ◽  
M W Tjaronge ◽  
A A Amiruddin ◽  
B Bakri ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Strength Test ◽  
Laterite Soil ◽  
Compressive Strength Test ◽  
Polymer Mortar ◽  
Alkaline Activator ◽  
Water Curing ◽  
Straw Ash ◽  
Percentage Ratio

Abstract This study aims to analyze the effect of curing on the compressive strength of geopolymer mortar made from straw ash, fly ash and laterite soil. This research is experimental in the laboratory. Geopolymer mortar was produced using straw ash, fly ash and laterite soil with a percentage ratio of 16.67: 41.67: 41.67. The alkaline activator used is sodium hydroxide (NaOH) with a concentration of 12 M. The compressive strength test of 5 × 10 cm cylinders is used to evaluate the geopolymer mortar mixture produced at the age of 3, 7 and 28 days with curing, namely air and water curing. The results showed that the compressive strength of the geopolymer mortar increased along with the increasing age of each curing. The compressive strength values produced in air curing 3, 7 and 28 days were respectively 1.64 N/mm2, 1.72 N/mm2 and 3.22 N/mm2. While water curing, the resulting compressive strength values for each curing are 1.03 N/mm2, 1.63 N/mm2 and 1.68 N/mm2. At the ages of 3, 7 and 28 days, there was an increase in the compressive strength values from water curing to air curing, which were 0.37%, 5.23% and 47.82%, respectively. It can be seen that the compressive strength of the geopolymer mortar made from straw ash, fly ash and laterite soil in air curing is greater than that of water curing.

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