scholarly journals Study on aerated concrete using steam curing test method

2021 ◽  
Vol 309 ◽  
pp. 01206
Author(s):  
Rohith Naidu T Y ◽  
G.V.V Satyanarayana
Keyword(s):  
Concrete Block ◽  
Vital Role ◽  
Test Method ◽  
Aluminium Content ◽  
Steam Curing ◽  
Dead Weight ◽  
Structural Wall ◽  
Aluminium Powder ◽  
Concrete Blocks ◽  
Aerated Concrete

The Accumulation of warm and moisture in building walls plays an vital role in its upkeep and power conservation. Aerated Concrete block, an environmental material gives an anticipated result to building construction. Aerated Concrete can build light weight, eco-friendly, non-structural wall, reduced dead weight concrete blocks. Aerated Concrete is developed introducing aluminium powder which reacts with the calcium hydroxide on hydration of cement. Several curing test methods are done to find out the optimum dosage of aluminium content. The Aerated concrete blocks are pre-casted by mixing Portland cement, fly ash, GGBS, quarry dust, lime stone powder, water and aluminium powder.

Metakaolin-Based Porous Geopolymer with Aluminium Powder

2014 ◽  
Vol 608 ◽  
pp. 132-138 ◽  
Author(s):  
Pimpawee Keawpapasson ◽  
Chayanee Tippayasam ◽  
Silawat Ruangjan ◽  
Pajaree Thavorniti ◽  
Thammarat Panyathanmaporn ◽  
...  
Keyword(s):  
Construction Materials ◽  
Hydrogen Gas ◽  
Building Structures ◽  
Foaming Agent ◽  
Aluminium Powder ◽  
Concrete Production ◽  
Mechanical And Physical Properties ◽  
Al Powder ◽  
Compressive And Flexural Strengths ◽  
Powder Content

Porous concretes such as aerated and lightweight concretes are commonly used in construction fields. Lightweight construction materials are used to reduce either the weight or the budget of building structures. Porous concrete production is widely utilised aluminium (Al) powder to increase pores in concrete structures and giving information for porous geopolymer production. It was introduced by adding 0.05-1% Al-powder as the initiated materials of geopolymers, to react with water in those materials and promote hydrogen gas inside specimens. The research, therefore, focused on the synthesis of porous geopolymer by metakaolin as a pozzolan and mixed with alkali solution (8M NaOH and Na2SiO3) as well as Al-powder as a foaming agent. The highly porous geopolymers were produced with various Al-powders as 0%, 0.2%, 0.4%, 0.6% 0.8% and 1% by weight. After 7, 14 and 28 days age, the specimens were tested the mechanical properties, such as compressive and flexural strengths. The water absorption, apparent porosity and bulk density were analyzed at 28 days age. The synthesis of metakaolin-based porous geopolymers with Al-powder presented good results. It showed that Al-powder content affected to degree of porosity of geopolymers. Keywords: Metakaolin based geopolymer, Porous geopolymer, Aluminium powder, Foaming agent, Mechanical and physical properties

scholarly journals Experimental Studies on Compressive Strength of Aerated Concrete with Varying Percentage of Aluminium Powder

2021 ◽  
Vol 309 ◽  
pp. 01197
Author(s):  
G.V.V. Satyanarayana ◽  
A. Ranjith
Keyword(s):  
Compressive Strength ◽  
Building Materials ◽  
Raw Materials ◽  
Experimental Studies ◽  
Raw Material ◽  
Industrial Growth ◽  
Aluminium Powder ◽  
Aerated Concrete ◽  
Lime Powder ◽  
By Products

Today the disposal of various by-product materials is a concern against the environment, these are producing due to rapid industrial growth in our country. Most of the researchers are focused on the utilization of these by-products in the civil engineering construction industry. By using these by-products, on one hand, will protect the environment and other hands the disposal problem will be solved. Day by day the requirement of building materials increased due to urbanization, due to this more raw materials are required and depleted the natural resources. In this contest, environmental protection is need to protect incremental temperature in nature. To avoid these problems of the modern era, aggregation of these by-products can be used as one of building material and to overcome this situation, Aerated concrete is one of the solutions by reducing the raw material quantity in concrete like sand and cement by introducing air without compromising in the volume. Day to day aerated concrete has become popular due to lightweight and high insulation against temperature and sound. This concrete is using in high raised buildings to reduce the self-weight of building to protect during earthquake situations. In this experimental study mainly performed the compressive strength of aerated concrete with replacement of sand by quarry dust. Also reducing the cement content with replacement of fly ash, GGBS and lime powder at various percentages that is ranging. the performance of aerated concrete was observed more satisfactory when compared with and without replacement of above-saided materials.

scholarly journals The Physical and Mechanical Properties of Autoclaved Aerated Concrete (AAC) with Recycled AAC as a Partial Replacement for Sand

Buildings ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 60
Author(s):  
Abdul Rahman Rafiza ◽  
Ahmad Fazlizan ◽  
Atthakorn Thongtha ◽  
Nilofar Asim ◽  
Md Saleh Noorashikin
Keyword(s):  
Mechanical Properties ◽  
Waste Product ◽  
Physical And Mechanical Properties ◽  
Production Costs ◽  
Partial Replacement ◽  
Autoclaved Aerated Concrete ◽  
Aerated Concrete ◽  
New Form ◽  
Powder Content ◽  
Lower Production

The application of AAC has increased considerably in Malaysia since the 1990s. The usage of AAC has some advantages, but it also has negative environmental impacts since rejected concrete will become landfill. This study aimed to use AAC waste powder as a material that would partially replace the sand content to produce a new form of Autoclaved Aerated Concrete (AAC). The physical and mechanical properties of the newly developed AAC were investigated. This paper presents improved mechanical and physical properties of the new form of recycled AAC concrete. Besides these improvements, using recycled AAC could lower production costs. Furthermore, the usage of this recycled waste powder is both economically and environmentally advantageous. This study found that when recycled AAC was substituted for sand, AAC with a fine recycled powder content of 30% had a compressive strength that was around 16% higher than conventional AAC and between 29% and 156% higher than any value attained utilizing an industrial waste product. This study also confirmed that the greater strength could be identical to a higher tobermorite phase and that the recycled AAC surface showed a finer crystalline morphology.

scholarly journals ANALISIS KANDUNGAN ALUMINIUM POWDER PROPELAN BERDASAR ENERGI PEMBAKARAN DARI BOMB KALORIMETER (ANALYSIS OF PROPELLANT’S ALUMINUM POWDER CONTENT BASED ON BURNING ENERGY FROM BOMB CALORIMETER)

2018 ◽  
Vol 14 (1) ◽  
pp. 73
Author(s):  
Kendra Hartaya
Keyword(s):  
Aluminum Powder ◽  
Aluminum Content ◽  
Energy Output ◽  
Output Measurement ◽  
Combustion Energy ◽  
Bomb Calorimeter ◽  
Al Content ◽  
Aluminium Powder ◽  
Powder Content

It has been analyzed the result of propellant research with variable aluminum content to the combustion energy output . Measurement of the amount of combustion energy carried by the bomb calorimeter. Propellant sample was made by mixing HTPB and aluminium for 15 minutes, adding fine AP for mixing 20 minutes, adding coarse AP for mixing 50 minutes. After stirring ends, the TDI was added and stirred for 15 minutes . Aluminum content in the propellant varies from 8 % to 18 %w . The resulted combustion energy is 2885 cal/g to 3750 cal/g . In 18 % of Al content, burning energy begin to reduce . This reduction was largely caused by burning sample together with the erosiving sample ABSTRAKTelah dilakukan analisis hasil penelitian propelan dengan variabel kandungan aluminium terhadap hasil energi pembakaran. Pengukuran besarnya energi pembakaran propelan dilakukan dengan bomb calorimeter. Sampel propelan dibuat dengan mencampur HTPB dan aluminium selama 15 emnit dilanjutkan pencampuran dengan AP halus selama 20 menit, lalu dengan AP kasar selama 50 mrnit. Setelah pengadukan berakhir maka ditambahkan TDI dan diaduk selama 15 menit. Kandungan Al di variasi dari 8% hingga 18%. Energi pembakaran yang dihasilkan adalah 2885 kal/gr hingga 3750 kal/gr. Pada 18% Al energi pembakaran mulai menurun. Penurunan ini diakibatkan oleh sebagian besar sampel yang terbakar sama dengan sampel yang mengalami erosiv.

scholarly journals Effect of Aluminium Powder on Light-weight Aerated Concrete Properties

2019 ◽  
Vol 97 ◽  
pp. 02005
Author(s):  
Lam Tang Van ◽  
Dien Vu Kim ◽  
Hung Ngo Xuan ◽  
Tho Vu Dinh ◽  
Boris Bulgakov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Modulus Of Elasticity ◽  
Industrial Waste ◽  
Power Plants ◽  
Dry Density ◽  
Light Weight ◽  
Aluminium Powder ◽  
Concrete Properties ◽  
Thermoelectric Power Plants ◽  
Aerated Concrete

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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