PROPERTIES OF MORTAR CONTAINING CERAMIC POWDER WASTE AS CEMENT REPLACEMENT

2015 ◽  
Vol 77 (12) ◽  
Author(s):  
Mostafa Samadi ◽  
Mohd Warid Hussin ◽  
Han Seung Lee ◽  
Abdul Rahman Mohd Sam ◽  
Mohamed A. Ismail ◽  
...  
Keyword(s):  
Construction Industry ◽  
Ceramic Powder ◽  
Ceramic Materials ◽  
Strength Properties ◽  
Strength Development ◽  
X Ray Diffraction ◽  
Cement Replacement ◽  
Water Curing ◽  
Field Emission Electron Microscopy ◽  
Curing Regime

Ceramic materials are largely used in all over the world and consequently, large quantities of wastes are produced simultaneously by tile manufacturers and construction industry. Nevertheless, part of these wastes and those produced by the construction industry are dumped in landfills. This paper presents the effect of using ceramic waste in mortar as cement replacement. Four mortar mixes were prepared in this study and focuses on the effect of ceramic powder as cement replacement on the strength development and the morphology of the mortar. The microstructural characteristics of the mortar were investigated by scanning field emission electron microscopy (FESEM) and the mineralogical properties was investigated using the X-ray diffraction (XRD).  The cement was replaced by ceramic powder from 0% to 60% by weight of cement. The specimens were cast in 50 x 50 x 50 mm cube and water curing regime was used until the age of testing. The fineness of ceramic powder used is less than 45µm. The developments of compressive strength were studied for all samples. It is found that the optimum replacement that gave the highest strength was 40% replacement. It was also found that the use of ceramic powder enhanced the microstructure and strength properties of the mortar.

Effect of Ceramic Powder on Mortar Concrete

2015 ◽  
Vol 1113 ◽  
pp. 62-67 ◽  
Author(s):  
Mostafa Samadi ◽  
Mohd Warid Hussin ◽  
Abdul Rahman Mohd Sam ◽  
Hasanah Shukor Lim
Keyword(s):  
Ceramic Powder ◽  
Strength Development ◽  
Ceramic Tiles ◽  
Cement Replacement ◽  
Material Supply ◽  
The World ◽  
Water Curing ◽  
Curing Regime ◽  
Pozzolanic Properties ◽  
Growing Population

The growing population of the world resulting in the demand for shelter and infrastructure, consequently increasing the use of natural resources that can cause problem to the environment and material supply. Ceramic tiles are a waste material that has been studied and shown to have pozzolanic properties. This study focuses on the effect of finer ceramic waste as cement replacement on the compressive strength, strength development and flowability of the mortar. The cement was replaced by ceramic powder from 10% to 40% by weight of cement. The specimens were cast in 50x50x50mm cubes and water curing regime was used until the age of testing. The results of 20% replacement show that finer ceramic powder has the potential to be used as cement replacement material.

scholarly journals Pozolanicidade do resíduo cerâmico

2020 ◽  
Vol 1 (48) ◽  
pp. 139
Author(s):  
Janaína Anne Mota Melo ◽  
João Batista Duarte ◽  
Leonardo Do Nascimento Dias ◽  
Sóstenes Rodrigues do Rêgo ◽  
Vamberto Monteiro da Silva ◽  
...  
Keyword(s):  
Construction Industry ◽  
Carbon Dioxide Emissions ◽  
Ceramic Materials ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
New Materials ◽  
X Ray Diffraction ◽  
Mineralogical Analysis ◽  
X Ray ◽  
Do So

<p>The construction industry is still responsible for generating a significant volume of waste from mortars, concrete and ceramic materials. We underline in this scenario the residue of ceramic bricks that can be used in the production of new materials, such as laying and coating mortars, concrete and ecological bricks. This usage allows the reduction of the percentage of binders in these compositions and, consequently, the reduction of costs, less consumption of non-renewable natural resources and the reduction of carbon dioxide emissions from clinker manufacture. In order to do so, it is necessary to make the scientific verification of the process of pozzolanic activity through the following experiments: X-ray Diffraction (XRD) mineralogical analysis, sieving and sedimentation particle size analysis, X-ray Fluorescence (FRX) chemical analysis and the verification of Ca(OH)2 consumption by the modified Chapelle experiment. The results showed that the ceramic residue from non-structural masonry has high levels of silica (SiO2 ), aluminum oxide (Al2 O3 ) and iron oxide (Fe2 O3 ). Secondary pozzolanic additive.</p>

Pozzolanic Reactivity of Coal Bottom Ash after Chemically Pre-Treated with Sulfuric Acid

2019 ◽  
Vol 947 ◽  
pp. 212-216
Author(s):  
Andri Kusbiantoro ◽  
Amalina Hanani ◽  
Rahimah Embong
Keyword(s):  
Construction Industry ◽  
Treatment Process ◽  
Current Trend ◽  
Bottom Ash ◽  
Supplementary Cementitious Materials ◽  
Strength Development ◽  
Coal Bottom Ash ◽  
Cement Replacement ◽  
Pozzolanic Reactivity ◽  
Pre Treatment

Current trend in construction industry has highlighted the use of silica-rich supplementary cementitious materials from industrial wastes in the production of concrete. Numerous studies have validated the pozzolanic properties of these materials, yet coal bottom ash received only infamous reputation as a pozzolanic material, owing to its low reactivity and heavy metals contaminants. Therefore this study was purposed to enhance the pozzolanic reactivity of coal bottom ash through chemical pre-treatment process. Different concentrations of acids and treatment period were studied to obtain optimum parameters for pre-treatment process. Treated ash was characterized for its chemical oxide composition. Its effect on the hydration of cement was studied through the inclusion as cement replacement material in mortar mixtures. From the chemical oxide compositions, a combination of 0.5 M of H2SO4 and 1 hour soaking duration presented the highest SiO2 proportion in the ash. Its inclusion at 5% (by weight of cement) to replace cement proportion in mortar mixtures was able to enhance the compressive strength of mortar at later age, regardless of its slower strength development in the early age. Utilizing treated coal bottom ash as partial cement replacement material has unlocked new achievement for greener future in construction industry.

Lightweight Mortar Incorporating Various Percentages of Waste Materials

2014 ◽  
Vol 67 (3) ◽  
Author(s):  
Taha Mehmannavaz ◽  
Mohammad Ismail ◽  
Salihuddin Radin Sumadi ◽  
Mostafa Samadi ◽  
Seyed Mahdi Sajjadi
Keyword(s):  
Strength Development ◽  
Palm Oil Fuel Ash ◽  
Cement Replacement ◽  
Fuel Ash ◽  
Pulverized Fuel ◽  
Aerated Concrete ◽  
Pulverized Fuel Ash ◽  
Partial Cement Replacement ◽  
Oil Fuel ◽  
Curing Regime

The experimental study evaluated the performance of lightweight aerated concrete incorporating various percentages of palm oil fuel ash (POFA) and pulverized fuel ash (PFA) as partial cement replacement. Performance evaluation of the aerated concrete was investigated with respect to ultimate compressive strength, density and strength development. Twelve mixes are developed and tested at different periods, i.e. 3, 7and 28 days. In this work, two different curing regime namely air curing and water curing were used to monitor the effect of the curing regime. The results show that the mixtures produced by replacing cement with POFA and PFA were comparable to the mix without cement replacement. Furthermore, this investigation observed that the cement-POFA-PFA based lightweight aerated concrete can be produced as lightweight non-load bearing concrete units, because hazard of ashes (POFA & PFA) might be a serious issue for human health. Disposal of ashes contributes the shortage of landfill space in all the worlds, especially in Malaysia.  

The Effect of Polymer Emulsion Addition on the Setting Time, Crack Formation and Strength of Cementitious Patch Repair Mortars

2015 ◽  
Vol 1129 ◽  
pp. 86-93
Author(s):  
Deon Kruger ◽  
Neil Herbst ◽  
Jannes Bester
Keyword(s):  
Crack Formation ◽  
Setting Time ◽  
Strength Properties ◽  
Patch Repair ◽  
Strength Development ◽  
Polymer Emulsion ◽  
Repair Mortar ◽  
Setting Times ◽  
Repair Mortars ◽  
Curing Regime

With millions of square meters of ageing exposed concrete surfaces throughout the world, concrete patch repair is becoming a major component of the civil construction industry. To ensure effective and efficient repairs and rehabilitation of deteriorating concrete surfaces, patch materials with excellent workability during the repair phase and durability during its design life cycle are required. The addition of polymer emulsions to cementitious repair mortars increase the setting time, crack resistance while negatively affects the strength properties of the mortar. Polymer emulsions include natural rubber, polyacrylonitrile and polivinylacetate, to name just a few [1]. This paper focus on the effect of adding different polymer emulsions at varying dosages to cementitious repair mortars to obtain a better understanding of the influences on setting times, crack formation properties and curing regime requirements for optimal strength development. Ambient temperature and relative humidity were kept constant during the testing cycles. The results obtained indicated that the introduction of a polymer emulsion tend to reduce both the initial and final setting times of the repair mortars but that is extends the duration between initial and final set when compared to unmodified repair mortars. Compressive strength reductions were observed when adding polymer emulsions to the repair mortar but it was clear that crack formation was eliminated with the addition of the emulsions

Influence of the Residue of Casting by Lost Wax in the Modulus of Elasticity and Porosity of Concretes

2014 ◽  
Vol 805 ◽  
pp. 343-349
Author(s):  
Carine F. Machado ◽  
Weber G. Moravia
Keyword(s):  
Construction Industry ◽  
Modulus Of Elasticity ◽  
Chemical Characterization ◽  
Microstructural Characterization ◽  
Cement Matrix ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hardened State ◽  
Material Powder

This work evaluated the influence of additions of the ceramic shell residue (CSR), from the industries of Lost Wax Casting, in the modulus of elasticity and porosity of concrete. The CSR was ground and underwent a physical, chemical, and microstructural characterization. It was also analyzed, the environmental risk of the residue. In the physical characterization of the residue were analyzed, the surface area, and particle size distribution. In chemical characterization, the material powder was subjected to testing of X-ray fluorescence (XRF). Microstructural characterization was performed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The residue was utilized like addition by substitution of cement in concrete in the percentages of 10% and 15% by weight of Portland cement. It was evaluated properties of concrete in the fresh and hardened state, such as compressive strength, modulus of elasticity, absorption of water by total immersion and by capillarity. The results showed that the residue can be used in cement matrix and improve some properties of concrete. Thus, the CSR may contribute to improved sustainability and benefit the construction industry.

scholarly journals Microwave Dielectric Properties of CCTO/PVA Composites

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
M. P. F. Graça ◽  
K. D. A. Sabóia ◽  
F. Amaral ◽  
L. C. Costa
Keyword(s):  
Complex Permittivity ◽  
Effective Medium Theory ◽  
Ceramic Powder ◽  
Microwave Dielectric Properties ◽  
Weight Fraction ◽  
Dielectric Behavior ◽  
X Ray Diffraction ◽  
Medium Theory ◽  
Classical Models ◽  
High Dielectric

The CaCu3Ti4O12 (CCTO) ceramic powder was inserted in the polyvinyl alcohol (PVA) polymeric matrix, with an increasing weight fraction of the filler, to form a flexible and high dielectric constant composite at the GHz region. The structural characterization of the samples was performed using X-ray diffraction and scanning electron microscopy (SEM). The complex permittivity was calculated by the small perturbation theory using two resonant cavities (2.7 GHz and 5.0 GHz). Several classical models (Maxwell Garnett, Lichtenecker, effective medium theory (EMT), and Yamada) were used to fit the real part of the complex permittivity of the composite as a function of the weight fraction of CCTO powder inserted in the PVA matrix. The best predictions for the dielectric behavior of these samples were obtained with the EMT and Yamada models.

Zirconium Titanate: Synthesis and Processing of Fine Powders Prepared by Chemical Route

2006 ◽  
Vol 530-531 ◽  
pp. 683-688 ◽  
Author(s):  
Valter Ussui ◽  
Dolores Ribeiro Ricci Lazar ◽  
Nelson Batista de Lima ◽  
Ana Helena A. Bressiani ◽  
José Octavio A. Pascoal
Keyword(s):  
Metal Salt ◽  
Ceramic Powder ◽  
Ammonium Hydroxide ◽  
Molar Ratio ◽  
Precipitation Process ◽  
Zirconium Titanate ◽  
X Ray Diffraction ◽  
Chemical Route ◽  
Synthesis And Processing ◽  
Cylindrical Samples

A process for synthesis of fine zirconium titanate powders by chemical route is described. Zirconium/titanium molar ratio was varied from 0.67 to 1.5 and the powders produced were analyzed. The precipitation process comprises the mixture of zirconium and titanium metal salt solutions to ammonium hydroxide solution, followed by washing of the precipitate, calcination and grinding to result in zirconium titanate. The ceramic powder is then uniaxially pressed as cylindrical samples and sintered at 1400°C for 5 hours. The microstructure of fractured and thermally etched ceramic was observed by scanning electron microscopy, and crystal phase identifications were done by X-ray diffraction. At least two different zirconium titanate phases, ZrTiO4 and Zr5Ti7O24, were identified. Ceramic hardness was measured by Vickers indentation.

Study of ceramic materials in the SrSnO3–NaNbO3 system by X-ray diffraction, dielectric and Raman spectroscopy

2009 ◽  
Vol 484 (1-2) ◽  
pp. 356-359 ◽  
Author(s):  
Abdelhedi Aydi ◽  
Hamadi Khemakhem ◽  
Annie Simon ◽  
Dominique Michau ◽  
Régnault von der Mühll
Keyword(s):  
Raman Spectroscopy ◽  
Ceramic Materials ◽  
X Ray Diffraction ◽  
X Ray
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