Strength Properties of Low Thermal Conductivity Fly Ash Bricks: Compressive and Flexural Strength Aspects

2011 ◽  
Vol 117-119 ◽  
pp. 1352-1357 ◽  
Author(s):  
Weerapol Namboonruang ◽  
Rattanakorn Rawangkul ◽  
Wanchai Yodsudjai
Keyword(s):  
Thermal Conductivity ◽  
Fly Ash ◽  
Flexural Strength ◽  
Strength Properties ◽  
Weight Basis ◽  
Structural Elements ◽  
Load Bearing ◽  
Soil Cement ◽  
Local Soil ◽  
Alternative Type

The development of new alternative type of fly ash bricks using the locally available local soil from Ratchaburi province were mixed with fly ash from Kanchanaburi province, where both sources in western of Thailand, is the main purpose of this study. These are compared to the ratchaburi local soil cement bricks without the mixing of western fly ash in different proportions. It is concluded that the addition of western fly ash reduces the thermal conductivity. The compressive and flexural strength decrease when the ratio of western fly ash is more than 30 percentages. However, considering the various factors it can be concluded that appropriate ingredient toward producing the good commercial western fly ash bricks is 5 percentages of portland cement and 30 percentages of western fly ash by weight basis of ratchaburi local soil. The compositions of western fly ash at more than 25 percentages by weight basis of ratchaburi local soil and since up to 14 days of curing time are proved to be economical mixtures for load bearing panels or brick type structural elements according to the Thai Industrial Standard for structural clay load-bearing tile.

Investigation of Properties of Low Thermal Conductivity Pozzolanics Soil Bricks Towards Sustainable Development

2011 ◽  
Vol 261-263 ◽  
pp. 469-479 ◽  
Author(s):  
Weerapol Namboonruang ◽  
Rattanakorn Rawangkul ◽  
Wanchai Yodsudjai ◽  
Joseph Khedari
Keyword(s):  
Thermal Conductivity ◽  
Fly Ash ◽  
Physical Properties ◽  
Adsorption Property ◽  
Weight Basis ◽  
Modulus Of Rupture ◽  
Unit Weight ◽  
Commercial Development ◽  
Load Bearing ◽  
Alternative Type

The development of new alternative type of pozzolanics soil bricks using the locally available clay from Ratchaburi province were mixed with fly ash from Kanchanaburi province, where both source in western of Thailand, is the main purpose of this study. These are compared to the local clay cement bricks without the mixing of flyash in different proportions. In the present work, the physical properties of the specimens are presented namely, compressive strength, modulus of rupture, thermal conductivity and unit weight. Tests were also conducted to study the influence of time of curing on the increase in physical properties of the bricks. It was concluded that the addition of fly ash reduces the thermal conductivity and unit weight, while increases the water adsorption property of the specimen. The compressive and flexural strength are decreased when the ratio of fly ash is more than 30 percentages. However, when considering the various factors it can be said that, appropriately ingredient toward produce to commercial of the good pozzolanics soil bricks is portland cement constant was 5 percentages and 30 percentages of fly ash by weight basis of soil at water per total powder, W/P 0.3525. The compositions of fly ash more than 25 percentages by weight basis of soil and since up to 14 days of curing time proved to be economical mixtures for load bearing panels or brick type structural elements according to the Thai Industrial Standard(TIS) for structural clay load-bearing tile. Therefore, commercial development is highly promising.

1 Year Long Term on Strength Properties of Pozzolanics Local Soil Bricks

2011 ◽  
Vol 399-401 ◽  
pp. 1381-1385
Author(s):  
Weerapol Namboonruang ◽  
Rattanakorn Rawangkul ◽  
Wanchai Yodsudjai ◽  
Nutthanan Suphadon
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Strength Properties ◽  
Modulus Of Rupture ◽  
Strength Increase ◽  
Soil Cement ◽  
Local Soil ◽  
Rupture Properties

This work emphasizes on the study of Pozzolanics Local Soil Brick properties. The compressive strength and flexural strength on modulus of rupture properties are investigated. At the ratio of 5% Portland cement type 1 and 30% fly ashes by weight at water powder ratio (w/p) 0.3525. This brick is called as Pozzolanics soil bricks. Their properties are compared to soil cement bricks (RCM35) at the age of 3, 7, 14, 28, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330 and 360. Results show that the compressive strength and flexural strength increase with increasing curing time. The compressive strength and the flexural strength at 360 day curing times increases as 41.83% and 43.77%, respectively compared at 28 day curing times. Similar to soil cement bricks, the compressive strength and flexural strength of Pozzolanics soil bricks increase as 20.80% and 11.94% respectively compared between 360 day and 28 day curing times. However, comparing to RCM35 at 360 days the compressive strength and the flexural strength are lower as 60.43% and 4.90 times respectively.

Thermal Conductivity and Strength Properties of Soil-Based Lime Adobe Stabilized with Pottery Burnt Hull Ash

2012 ◽  
Vol 535-537 ◽  
pp. 1950-1954 ◽  
Author(s):  
Weerapol Namboonruang ◽  
Rattanakorn Rawangkul ◽  
Wanchai Yodsudjai ◽  
Nutthanan Suphadon
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Compressive Strength ◽  
Strength Properties ◽  
New Novel ◽  
Earthenware Industry ◽  
Soil Cement ◽  
Local Soil ◽  
Percentage Weight ◽  
Properties Of Soil

This work studies the possibility to produce the new novel brick by mixing between the local soil, local lime and burnt hull ash which is the waste in the earthenware industry. All materials conducted in this work are found in Ratchaburi province located in the western of Thailand. The chemical and mechanical properties are studied including the thermal conductivity will be determined. Varying burnt hull ash (BHA) contents are added into the combination and compared properties with the soil cement brick (RCB) at the same percentage weight. Results show that the compressive strength and flexural strength of soil brick mixed with 10% constant lime and varying burnt hull ash contents (CLBA) shows the maximum values at BHA of 25% by weight at water to powder ratio of 0.4225 and the thermal conductivity of CLBA is lower than that of SCB given as 43.98%.

Properties of Crumb Rubber Mixed in Local Thailand Soil Cement Brick Composites

2013 ◽  
Vol 821-822 ◽  
pp. 1271-1276
Author(s):  
Weerapol Namboonruang ◽  
Rattanakorn Rawangkul ◽  
Wanchai Yodsudjai ◽  
Nutthanan Suphadon ◽  
Anucha Boongurd ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Low Cost ◽  
Local Area ◽  
Crumb Rubber ◽  
Unit Weight ◽  
Air Voids ◽  
Soil Cement ◽  
Local Soil ◽  
Rubber Particles ◽  
The Matrix

This work presents a study on the investigation of recycled waste tyre (crumb rubber) as aggregate in the combination of local soil-cement brick. The purpose is to develop a lightweight brick with low thermal conductivity that can produce as low cost materials in local area of Thailand. The different amount of crumb rubber particles at 0, 10, 15, 20, 25, 30 and 40% were replaced to local Ratchaburi soil by weight and then mixed with a constant of Portland cement content at 10%. The mechanical properties were studied and indicated that a significant reduction in sample unit weight, there by resulting in a reduction of compressive strength and flexural strength. The results show that the presence of air voids and crumb rubber particles in the matrix can increase the water absorption but decrease the thermal conductivity. However, according to ASTM indicates that this hybrid material can be used as non-load bearing concrete masonry units (2.45 MPa) and is also suitable for construction as low cost and low energy consumption house in Thailand.

scholarly journals Effect of Irradiated and Non-Irradiated Waste PET Based Cementitious Grouts on Flexural Strength of Semi-Flexible Pavement

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4133
Author(s):  
Muhammad Imran Khan ◽  
Huang Yong Huat ◽  
Mohammad Haziq bin Muhamad Dun ◽  
Muslich Hartadi Sutanto ◽  
Ehsan Nikbakht Jarghouyeh ◽  
...  
Keyword(s):  
Fly Ash ◽  
Flexural Strength ◽  
Road Construction ◽  
Flexible Pavement ◽  
Strength Properties ◽  
Air Voids ◽  
Porous Asphalt ◽  
Pavement Construction ◽  
Positive Effect ◽  
Recycled Waste

In this study the effect of irradiated and non-irradiated waste polyethylene terephthalate (PET) as replacement of cement and fly-ash in ordinary Portland cement (OPC) and geopolymeric cement (GPC) based cementitious grouts on flexural strength of semi-flexible pavement specimens were evaluated. The porous asphalt gradation was selected based on Malaysian specifications for semi-flexible pavements with a target of 30% air voids. The cement content in the OPC grouts and the fly-ash content in the GPC based grouts were partially replaced with 1.25% PET (using both irradiated and non-irradiated PET). Beam specimens were prepared and tested for flexural strength properties using center point loading configuration. The grouts modified with recycled waste plastic (PET) showed approximately the same results as obtained from the control specimens. Although the replacement amount was low (1.25% by weight of cement), nonetheless, significant impact on reducing CO2 emissions is expected when preparing grouts for mass construction of semi-flexible pavement surfaces. Similarly, effective recycling of waste plastics in road construction and replacing OPC with plastic and geopolymers will have a positive effect on the environment and will furthermore contribute to sustainable pavement construction.

Utilization of Phosphogypsum as Raw Material for Manufacturing of Non-Fired Load-Bearing Wall Bricks

2011 ◽  
Vol 374-377 ◽  
pp. 787-791
Author(s):  
Lin Yang ◽  
Yun Yan ◽  
Zhi Hua Hu
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Frost Resistance ◽  
Water Resistance ◽  
Steel Slag ◽  
Raw Material ◽  
Equal Weight ◽  
Sand Content ◽  
Load Bearing

Non-fired load-bearing wall brick was prepared utilizing non-treated original waste PG as raw material in the laboratory. When the amount of PG and cement is 65% and 10% (by weight) in the brick mixture, respectively, the compressive strength of bricks is still over 23MPa and the flexural strength comes up to 4MPa. Besides, the bricks hold excellent water-resistance and frost-resistance. Effects of steel slag or/and fly ash content on performance of bricks and effects of the change of sand content on water-resistance and frost-resistance are discussed. Results indicate that the compressive strength, flexural strength and soft coefficient are higher when blended mineral additive with various amounts of steel slag and fly ash. The frost-resistance goes up with the increase of the steel slag content, the water-resistance and frost-resistance goes down when the sand content decreases from 15% to 10%, no matter the 5% sand was replaced by fly ash or steel slag as equal weight. Microstructure of brick was investigated by XRD and SEM. Strength of brick results from a large amount of AFt (3CaO•Al2O3•3 CaSO4•32H2O) and C-S-H (calcium silicate hydrate) presented in the matrix which may be viewed as the biggest strength contributors bonding the gypsum and quartz together to a compact matrix.

Preparation of Calcium Silicate Board by Fly-Ash Based Calcium Silicate Powder by Press Molding

2013 ◽  
Vol 743-744 ◽  
pp. 603-606
Author(s):  
Shu Li Wang ◽  
Guo Tong Qin ◽  
Wei Wei
Keyword(s):  
Crystal Structure ◽  
Thermal Conductivity ◽  
Fly Ash ◽  
Flexural Strength ◽  
Bulk Density ◽  
Calcium Silicate ◽  
Molding Pressure ◽  
Pulp Fiber ◽  
Micro Morphology ◽  
Press Molding

Calcium silicate board has been prepared by press molding from fly-ash based calcium silicate powder with the pulp fiber as the reinforcing fibre. The micro-morphology and crystal structure of the obtained calcium silicate board were analyzed by SEM and XRD. The effects of cement,silica fume and molding pressure on the flexural strength and thermal conductivity of calcium silicate board were investigated. When the molding pressure is 10MPa, samples flexural strength, bulk density and thermal conductivity are 5MPa, 0.7g/cm3and 0.12 W/m·K respectively. It was found that this kind of calcium silicate powder was complete hydrated and could not be further hydrated even in autoclave curing.

scholarly journals Experimental Studies on Strength Properties of M60 Concrete with Partial Replacement of Cement by GGBS and Fly Ash

2021 ◽  
Vol 9 (12) ◽  
pp. 891-894
Author(s):  
Mantu Kumar
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Experimental Studies ◽  
Construction Materials ◽  
Strength Properties ◽  
Partial Replacement ◽  
Split Tensile Strength ◽  
Concrete Production

Abstract: Among all the current construction materials, concrete occupies a unique position. Concrete is the most often utilised building material. Cement production emits CO2, which is harmful to the environment. One of the most crucial ingredients in concrete production is cement. Experiments were carried out to see how different percentages of Fly Ash and GGBS affected the mechanical qualities of M60 grade concrete. After 7, 14, and 28 days of curing, the compressive strength of concrete cubes with suggested replacement was determined. Compressive strength, split tensile strength, and flexural strength are all evaluated on the cubes, cylinders, and prisms. The primary goal of this study is to compare the fresh and hardened characteristics of M-60 grade control concrete with concrete prepared with varied ratios of fly ash and GGBS Keywords: GGBS, Fly Ash, Durability, Compressive Strength, Tensile Strength, Flexural Strength, Slum cone Test

scholarly journals Study on EPS thermal insulation mortar prepared by magnesium oxychloride cement

2020 ◽  
Vol 198 ◽  
pp. 01016
Author(s):  
Shiming Huang ◽  
Wen Zhu ◽  
Yanli Zhang ◽  
Dehui Lu ◽  
Ruying Zhao
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Mechanical Strength ◽  
Thermal Insulation ◽  
Magnesium Oxychloride ◽  
Magnesium Oxychloride Cement ◽  
Oxychloride Cement

In this paper, a composite thermal insulation mortar was prepared with magnesium oxychloride cement and polystyrene (EPS) particles. The influence of EPS particles content on the mechanical strength, density and thermal conductivity of composite thermal insulation mortar was studied. Also, the effect of fly ash on the density and thermal conductivity of the mortar was researched. It was shown that: (1) Generally, EPS particles could reduce the compressive strength, flexural strength, density and thermal conductivity of the mortar. The 28 days compressive strength and 28 days flexural strength decreased by 93.3 % and 81.3 % respectively, with the content of EPS particles from 0 % to 0.486 %. Also the density of the mortar was reduced from 2043 g/dm3 to 805 g/dm3, and the thermal conductivity was fell from 0.4093 W/(m·K) to 0.2191 W/(m·K). (2) Small amounts (less than 5.487 %) of fly ash could increase the density and thermal conductivity. However, when the content of fly ash was more than 5.487 %, the density and thermal conductivity of thermal insulation mortar were significantly reduced.

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