Possibility of Using Bottom Аsh for Manufacturing Building Materials in Vietnam

Tang, Tang; Tang, Van; Булгаков,; Булгаков, Борис; Александрова,; Aleksandrova, Olga; Ларсен,; Ларсен, Оксана

doi:10.12737/article_5926a059214ca0.89600468

Cited by 8 publications

(6 citation statements)

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“…Besides that, the annual amount of industrial waste is more than 150 million tons in Vietnam. In which, metallurgical slag is about 45 ÷ 55 million tons, ash and slag TPP is nearly 50 ÷ 60 million tons [8,9]. In 2016, TPP "Vung Ang" produces about 3000 tons of ash and slag waste daily.…”

Section: Introductionmentioning

confidence: 99%

Combined Effects of Bottom Ash and Expanded Polystyrene on Light-weight Concrete Properties

et al. 2018

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The benefits of using waste materials as a partial replacement for cement in high performance concrete are also discussed. This paper presents the combined effects of bottom ash TPP “Vung Ang” and expanded polystyrene aggregate on different the properties of light-weight concrete. Twenty different concrete mixtures with a water to cement ratio of 0.4 and superplasticizer to cement ratio of 0.015 were used. On the one hand, the EPS was partially replaced with (0 ÷ 40)% by volume of concrete mixture. On the other hand, the fine aggregate was replaced with (0 ÷ 30)% by mass of BA TPP “Vung Ang”. The engineering properties, including workability, density and compressive strength of light-weight concrete were investigated at different curing times. The level of decrease in the strength depends upon the replacement level of EPS and BA. Specifically, the concrete containing 40% EPS and 30% BA at 28 days of age decrease in average density and strength were 43.2% and 26.4%, respectively, in comparison with the control concrete.

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Section: Introductionmentioning

confidence: 99%

Combined Effects of Bottom Ash and Expanded Polystyrene on Light-weight Concrete Properties

et al. 2018

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“…The physical properties of the fine aggregate are presented in Table 1. (Figure 1a), which manufactured at "But Son" factory in Vietnam with a specific weight of 3.15 g/cm 3 . Whereas, class F -Fly Ash (FA) used ( Figure 1b The experimental results of physical compositions of both PC "But Son" and FA are presented in Tables 4 .…”

Section: Materials A)mentioning

confidence: 99%

“…Especially 2016, only TPP "Vung Ang" was produced about 3 thousand tons of fly and bottom ash and slag materials on the daily. Furthermore, a colossal number of combustible gases and solid particles, which were formed as well, as a result of the combustion of solid-fuels at these TPP, have caused serious air and water environmental pollution in some provinces of Vietnam [3,4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Aluminium Powder on Light-weight Aerated Concrete Properties

et al. 2019

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Light-weight aerated concrete (LAC) is produced by making LAC involves the addition of a gas-forming admixture like aluminium powder (AP) to a wet mortar mixture. In concrete during curing, AP will react with the calcium hydroxide in the mixture to form hydrogen. The amount of gas-forming is dependent on the mechanical properties requirements. The aim of the current work was to investigate the properties of aerated concrete (AC) containing 30% fly ash and various AP content, including dry density, porosity and modulus of elasticity, as well as strengths of test specimens. The results of this study showed that when AP content increased, the density of AC decreased, but its porosity increased. Whereas an increase in the amount of AP caused a decrease in both the compressive strength, tensile strength and the modulus of elasticity of ACspecimens. The investigation of newly modified AC through combination of local by-product in Vietnam would decrease the content of Portland cement was used and as well as reduce the amounts of ash and slag TPP as well as industrial waste thrown at a landfill. Therefore, assisting the thermoelectric power plants to be more environmentally friendly in the future.

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“…В развивающихся странах по всему миру высокий темп промышленного развития предполагает потребление большого количества электроэнергии, основным источником которой в настоящее время служат теплоэлектростанции, работающие на угле, что объясняется имеющимися существенными природными запасами. В результате ежегодно образуется значительный объем золошлаковых отходов (ЗШО), ухудшающих экологическую ситуацию в этих странах и требующих утилизации, тем более что ограниченная площадь территории не позволяет использовать земельные ресурсы для их захоронения [7,8]. В этой связи научный и практический интерес представляет разработка технологии сульфоалюминатного портландцемента (САЦ) с применением техногенных материалов [9][10][11], а также введение в состав цемента различных видов добавок [12,13].…”

Section: Introductionunclassified

Effect of ash-and-slag waste on the properties of sulphoaluminate portland cement

2019

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Introduction: there is practically no information on the utilization of ash and slag waste (ASW) application in technology of special (noncontracting, expanding, self-stressing) cements, which predetermines the relevance of research in this direction. The study investigates the properties of experimental samples from cement, ash-and-slag and sand mixtures based on sulphoaluminate Portland cement (SAC) with an additive of the ASW. Materials and methods: a fine-particle binder material consisting of the SAC produced by the Podolsk Cement factory with a fine-grained ASW additive was used to obtain a binder mixture. Silica sand functioned as fine aggregate. All the raw materials used were local to the Russian Federation. The setting time, soundness, and strength of the binder mixture were determined according to GOST 30744-2001 standard. The specific surface area of the Portland cement was established through the use of the air permeability method utilizing of PMTs-500 instrument. The microstructure of the hardened binder mixture was studied employing electron microscopic analysis and X-ray phase analysis. Results: the work investigates the effect of 10 %, 15 %, 20 %, and 50 % ASW additive on the water demand, strength, and setting time of the SAC. The article also explores the kinetics of hardening and structure formation of samples from the binder mixture based on the SAC and ASW for hardening under normal conditions. Conclusions: results of the investigation allow recommending the ASW characterized by high dispersion as an additive for production of special cements without significant reduction of their properties. In the presence of the ASW, setting times of the cement mixtures virtually do not change as compared with the pure SAC. With limiting the amount of the ASW in the composition of the Portland cement, the strength characteristics do not practically change through the entire period of hardening.

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Possibility of Using Bottom Аsh for Manufacturing Building Materials in Vietnam

Cited by 8 publications

References 1 publication

Combined Effects of Bottom Ash and Expanded Polystyrene on Light-weight Concrete Properties

Combined Effects of Bottom Ash and Expanded Polystyrene on Light-weight Concrete Properties

Effect of Aluminium Powder on Light-weight Aerated Concrete Properties

Effect of ash-and-slag waste on the properties of sulphoaluminate portland cement

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