Properties of artificial aggregates of coal bottom ash-dredged soil system added with waste glass

The artificial aggregates (AAs) were manufactured from the parent batch powders consisting of bottom ash produced at thermal power plant and dredged soil by direct sintering method at 1050~1200°C for 10min. The bloating phenomenon could be occurred in AAs due to a gas-capturing caused by large quantity of liquid formed at the specimen surface. Increasing the amount of the Na2O added enlarged the area of black core and size of the macro pores in the aggregates. The inside black core got out of the surface of the specimens sintered at 1200°C showing the rugged and cracked surface, but this morphology did not cause a water absorption to increase.

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PERFORMANCE ON COAL BOTTOM ASH IN HOT MIX ASPHALT

International Journal of Research in Engineering and Technology ◽

10.15623/ijret.2013.0208004 ◽

2013 ◽

Vol 02 (08) ◽

pp. 24-33 ◽

Cited By ~ 4

Author(s):

Gunalaan Vasudevan .

Keyword(s):

Hot Mix Asphalt ◽

Bottom Ash ◽

Coal Bottom Ash

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Shear Friction Characteristics and Modification Factor of Concrete Prepared Using Expanded Bottom Ash and Dredged Soil Granules

International Journal of Concrete Structures and Materials ◽

10.1186/s40069-019-0364-x ◽

2019 ◽

Vol 13 (1) ◽

Author(s):

Keun-Hyeok Yang ◽

Kyung-Ho Lee

Keyword(s):

Shear Crack ◽

Bottom Ash ◽

Lightweight Aggregate Concrete ◽

Maximum Aggregate Size ◽

Crack Plane ◽

Upper Bound Theorem ◽

Friction Characteristics ◽

Dredged Soil ◽

Shear Friction ◽

Modification Factor

Abstract The objective of this study is to assess the shear friction characteristics of lightweight aggregate concrete (LWAC) prepared using artificially expanded bottom ash and dredged soil granules. A total of 37 concrete mixtures were prepared under the classification of three series. In the first and second series, the natural sand content for replacing lightweight fine aggregates and the water-to-cement ratio varied to obtain different densities and compressive strengths of concrete. The third series was designed to estimate the effect of the maximum aggregate size on the friction resistance along the shear crack plane of the monolithic interfaces. The frictional angle of the LWAC tested was formulated as a function of the ratio of the effective tensile and compressive strengths of concrete through the expansion of the integrated mathematical models proposed by Kwon et al., based on the upper-bound theorem of concrete plasticity. When predicting the shear friction strength of LWAC, the present mathematical model exhibits relatively good accuracy, yielding the mean and standard deviation of the ratios between experiments and predictions of 1.06 and 0.14, respectively, whereas the empirical equations proposed by the AASHTO provision and Mattock underestimated the results. Ultimately, an advanced modification factor for shear design of LWAC is proposed as a function of the density and compressive strength of concrete and the maximum size of aggregates.

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Performance of cement mortars and concretes containing coal bottom ash: A comprehensive review

Renewable and Sustainable Energy Reviews ◽

10.1016/j.rser.2021.111361 ◽

2021 ◽

Vol 149 ◽

pp. 111361

Author(s):

Nitin Ankur ◽

Navdeep Singh

Keyword(s):

Bottom Ash ◽

Comprehensive Review ◽

Coal Bottom Ash ◽

Cement Mortars

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Reactivity of Ground Coal Bottom Ash to Be Used in Portland Cement

J ◽

10.3390/j4030018 ◽

2021 ◽

Vol 4 (3) ◽

pp. 223-232

Author(s):

Esperanza Menéndez ◽

Cristina Argiz ◽

Miguel Ángel Sanjuán

Keyword(s):

Fly Ash ◽

Coal Fly Ash ◽

Bottom Ash ◽

Blended Cement ◽

Coal Ash ◽

Pozzolanic Reaction ◽

Natural Sand ◽

Coal Bottom Ash ◽

Novel Material ◽

Pozzolanic Properties

Ground coal bottom ash is considered a novel material when used in common cement production as a blended cement. This new application must be evaluated by means of the study of its pozzolanic properties. Coal bottom ash, in some countries, is being used as a replacement for natural sand, but in some others, it is disposed of in a landfill, leading thus to environmental problems. The pozzolanic properties of ground coal bottom ash and coal fly ash cements were investigated in order to assess their pozzolanic performance. Proportions of coal fly ash and ground coal bottom ash in the mixes were 100:0, 90:10, 80:20, 50:50, 0:100. Next, multicomponent cements were formulated using 10%, 25% or 35% of ashes. In general, the pozzolanic performance of the ground coal bottom ash is quite similar to that of the coal fly ash. As expected, the pozzolanic reaction of both of them proceeds slowly at early ages, but the reaction rate increases over time. Ground coal bottom ash is a promising novel material with pozzolanic properties which are comparable to that of coal fly ashes. Then, coal bottom ash subjected to an adequate mechanical grinding is suitable to be used to produce common coal-ash cements.

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A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

Sustainability ◽

10.3390/su13148031 ◽

2021 ◽

Vol 13 (14) ◽

pp. 8031

Author(s):

Syakirah Afiza Mohammed ◽

Suhana Koting ◽

Herda Yati Binti Katman ◽

Ali Mohammed Babalghaith ◽

Muhamad Fazly Abdul Patah ◽

...

Keyword(s):

Human Health ◽

Construction Industry ◽

Bottom Ash ◽

High Volume ◽

Coal Bottom Ash ◽

Substitute Material ◽

Physical And Chemical ◽

Vast Range

One effective method to minimize the increasing cost in the construction industry is by using coal bottom ash waste as a substitute material. The high volume of coal bottom ash waste generated each year and the improper disposal methods have raised a grave pollution concern because of the harmful impact of the waste on the environment and human health. Recycling coal bottom ash is an effective way to reduce the problems associated with its disposal. This paper reviews the current physical and chemical and utilization of coal bottom ash as a substitute material in the construction industry. The main objective of this review is to highlight the potential of recycling bottom ash in the field of civil construction. This review encourages and promotes effective recycling of coal bottom ash and identifies the vast range of coal bottom ash applications in the construction industry.

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