scholarly journals STRENGTH AND DURABILITY OF CONCRETE USING ARTIFICIAL HIGH STRENGTH LIGHT WEIGHT AGGREGATE MADE FROM COAL ASH AND EXPANDING SHALE POWDER

2009 ◽  
Vol 74 (640) ◽  
pp. 987-993
Author(s):  
Hiroshi KASAI ◽  
Jinhwan JEON ◽  
Hiroki WAMI ◽  
Isamu MATSUI
Keyword(s):  
Coal Ash ◽  
High Strength ◽  
Light Weight ◽  
Strength And Durability ◽  
Light Weight Aggregate ◽  
Durability Of Concrete

scholarly journals DEVELOPMENT OF ARTIFICIAL HIGH STRENGTH LIGHT WEIGHT AGGREGATE MADE FROM COAL ASH AND EXPANDING SHALE POWDER

2008 ◽  
Vol 73 (631) ◽  
pp. 1425-1432 ◽  
Author(s):  
Hiroshi KASAI ◽  
Jinhwan JEON ◽  
Hiroki WAMI ◽  
Eiichi FUJIKI ◽  
Kiminori TANAKA ◽  
...  
Keyword(s):  
Coal Ash ◽  
High Strength ◽  
Light Weight ◽  
Light Weight Aggregate

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

1986 ◽  
Vol 44 ◽  
pp. 548-549
Author(s):  
W. T. Donlon ◽  
J. E. Allison ◽  
S. Shinozaki
Keyword(s):  
Electron Microscopy ◽  
Automotive Industry ◽  
Fuel Economy ◽  
High Strength ◽  
Al Alloys ◽  
Light Weight ◽  
Thin Sections ◽  
Strength And Durability ◽  
Rapidly Solidified ◽  
Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

scholarly journals Development of Light-Weight Aggregate Production Process from Coal Ash with a Shaft Kiln (Part 2)

1986 ◽  
Vol 94 (1093) ◽  
pp. 998-1003
Author(s):  
Mitsutaka KAWAMURA ◽  
Takeshi OHTAKE ◽  
Kunio UCHIDA ◽  
Kunio KAMIYA ◽  
Fumikazu IKAZAKI
Keyword(s):  
Production Process ◽  
Coal Ash ◽  
Light Weight ◽  
Aggregate Production ◽  
Shaft Kiln ◽  
Light Weight Aggregate

scholarly journals KAJIAN KARBONASI PADA BETON MUTU TINGGI MEMADAT MANDIRI DENGAN VARIASI KOMPOSISI METAKAOLIN

2020 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Wibowo Wibowo ◽  
Endah Safitri ◽  
Delista Putri Deni
Keyword(s):  
Construction Industry ◽  
Cement Content ◽  
High Strength ◽  
Experimental Methods ◽  
Self Compacting Concrete ◽  
Carbonation Depth ◽  
Concrete Quality ◽  
Reinforced Steel ◽  
Strength And Durability ◽  
Durability Of Concrete

<p class="Abstract"><em>The construction industry is an important thing to support the development of a country. In concrete construction, quality, strength, and durability of concrete are the main requirements of all. In urban tropical countries, carbonation is one of the essential factors that affect the durability of concrete, and it may cause corrosion of reinforced steel in concrete. Therefore, high strength self-compacting concrete may be expected as the solution, improved by pozzolanic additions, metakaolin with substitution dosage at 10%; 12,5%; 15%; 17,5%; and 20%. This study purposed to determine the effect of metakaolin and its optimum dosage to improve high strength self-compacting concrete quality on its carbonation rates. This study was done by using experimental methods. It needs a plain cylindrical concrete with 75 mm diameter and 150 mm height, and testing by SNI 03-6468-2000, EFNARC 2002, and SEM-PUPR 25-2015. The carbonation test is done using accelerated laboratory carbonation </em><em>in Structures and Materials Laboratory, Faculty of Engineering, Universitas Sebelas Maret </em><em>by soaking the specimens in a 4% carbonate solution for 15 days, 37 days, and 51 days, proceeded by splitting using CTM, and spray it using a 1% phenolphthalein indicator to determine its carbonation depth. Based on the results, metakaolin might improve concrete quality by reducing its carbonation rates by 15% substitution dosage of cement content, with a nominal atmospheric carbonation coefficient 3,71 mm/year<sup>½</sup>, reduced 44,41% from HSSCC without metakaolin substitution. Metakaolin addition might reduce fresh concrete's workability and fulfill self-compacting concrete requirements specified by EFNARC 2002.</em></p>

scholarly journals Development of Light-Weight Aggregate Production Process from Coal Ash with a Shaft Kiln (Part 3)

1986 ◽  
Vol 94 (1094) ◽  
pp. 1068-1075
Author(s):  
Mitsutaka KAWAMURA ◽  
Takeshi OHTAKE ◽  
Kunio UCHIDA ◽  
Kunio KAMIYA ◽  
Fumikazu IKAZAKI
Keyword(s):  
Production Process ◽  
Coal Ash ◽  
Light Weight ◽  
Aggregate Production ◽  
Shaft Kiln ◽  
Light Weight Aggregate

scholarly journals Experimental Study on Mechanical Properties of High Strength Glass Fiber Reinforced Light Weight Aggregate Concrete

2021 ◽  
Vol 7 (05) ◽  
pp. 28-38
Keyword(s):  
Glass Fiber ◽  
Silica Fume ◽  
Glass Fibers ◽  
High Strength ◽  
Partial Replacement ◽  
Light Weight ◽  
Test Results ◽  
Fiber Reinforced ◽  
Alternative Materials ◽  
Light Weight Aggregate

Over the past few decades, extensive studies were in progress all around the globe in concrete technology in finding sustainable alternative materials that can partially or fully replace OPC along with the requirements like durability and strength aspects. Among all the available alternative materials, the industrial waste exhausts like fly ash, silica fume, GGBS, metakaoline and rice husk ash etc., are found to be quite promising. In the present study, a mix design high strength grade concrete of M60 is produced by using binary blending technique by the utilization of Silica fume(SF) and Metakaoline(MK) as partial replacement by weight of cement at different blended percentages ranging from 0-30% in the increments of 10% along with glass fibers having aspect ratio of 100. The different proportions of glass fibers are added in the volume fraction percentages of 0.5-2% in the increments of 0.5%. The test results of fiber reinforced specimens with different percentages of binary blend are compared with control specimens to study the behavior of FRC properties with various percentages of the blends as partial replacement by weight of cement. The test results concluded that the optimum blended percentage of silica fume and metakaoline is 15% i.e., 7.5%SF+7.5%MK along with SP percentage as 1.5% and glass fiber percentage as 1.5% when compared with the control mix. Further, light weight aggregate i.e., pumice stone is replaced to this mix to coarse aggregate at percentages of 25%,50%,75% and 100% respectively and the compressive strength characteristic along with density of concrete was studied and reported

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