Influence of uncontrolled burn rice husk ash on engineering properties of cement-admixed fine-grained soil

2020 ◽  
Vol 18 (2) ◽  
pp. 176-186
Author(s):  
A. S. M. Riyad ◽  
Md Shafin Shoaib
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Engineering Properties ◽  
Fine Grained ◽  
Fine Grained Soil

Development of Geopolymer Mortar from Metakaolin Blended with Agricultural and Industrial Wastes

2018 ◽  
Vol 766 ◽  
pp. 305-310 ◽  
Author(s):  
Chayanee Tippayasam ◽  
Sarochapat Sutikulsombat ◽  
Jamjuree Paramee ◽  
Cristina Leonelli ◽  
Duangrudee Chaysuwan
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Chemical Properties ◽  
Cement Industry ◽  
Industrial Wastes ◽  
Engineering Properties ◽  
Alkali Solutions ◽  
Physical And Chemical

Geopolymer is a greener alternative cement produced from the reaction of pozzolans and strong alkali solutions. Generally, the cement industry is one of largest producers of CO2that caused global warming. For geopolymer mortar usage, Portland cement is not utilized at all. In this research, geopolymer mortars were prepared by mixing metakaolin, various wastes (fly ash, bagasse ash and rice husk ash) varied as 80:20, 50:50 and 20:80, 15M NaOH, Na2SiO3and sand. The influence of various parameters such as metakaolin to ashes ratios and pozzolans to alkali ratios on engineering properties of metakaolin blended wastes geopolymer mortar were studied. Compressive strength tests were carried out on 25 x 25 x 25 mm3cube geopolymer mortar specimens at 7, 14, 21, 28 and 91 air curing days. Physical and chemical properties were also investigated at the same times. The test results revealed that the highest compressive strength was 20% metakaolin - 80% fly ash geopolymer mortar. When the curing times increases, the compressive strength of geopolymer mortar also increases. The mixing of metakaolin and bagasse ash/rice husk ash presented lower compressive strength but higher water absorption and porosity. For FTIR results, Si-O, Al-O and Si-O-Na+were found. Moreover, the geopolymer mortar could easily plastered on the wall.

Engineering properties of lightweight geopolymer synthesized from coal bottom ash and rice husk ash

2018 ◽  
Author(s):  
Nguyen Hoc Thang ◽  
Nguyen Ngoc Hoa ◽  
Pham Vo Thi Ha Quyen ◽  
Nguyen Ngoc Kim Tuyen ◽  
Tran Vu Thao Anh ◽  
...  
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Bottom Ash ◽  
Engineering Properties ◽  
Coal Bottom Ash

scholarly journals Combined effects of rice husk ash and nylon fiber on engineering properties of cement mortar

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Lalani Fernando ◽  
Karunananda Pemasiri ◽  
Buddhika Dassanayake
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Mortar ◽  
Engineering Properties ◽  
Combined Effects ◽  
Nylon Fiber

scholarly journals Remediation of Clayey Soil Using Silica Fume

2018 ◽  
Vol 162 ◽  
pp. 01017
Author(s):  
Kawther Al-Soudany
Keyword(s):  
Silica Fume ◽  
Clayey Soil ◽  
Liquid Limit ◽  
Engineering Properties ◽  
Unit Weight ◽  
Clay Material ◽  
Fine Grained ◽  
Pozzolanic Reactivity ◽  
Fine Grained Soil ◽  
Swell Pressure

This paper evaluates the use of silica fumes as modification of fine-grained soil in order to alter undesirable properties of the native soil and create new useful soils. Silica fume as well as clay material, are used in changing the engineering properties to be compatible and satisfying this is due to their pozzolanic reactivity. The study aims to investigate the uses of these materials in geotechnical engineering and to improve the properties of soils. Four percentages of silica fumes were used in the present study, which is 0, 3, 5 and 7%. Classification, specific gravity, compaction characteristics, swell and swell pressure, CBR and compressive strength tests had been conducted on the prepared and modified soils. Results clarified that the silica fume increasing leads to decrease the plasticity index and liquid limit. Increasing in silica fume causes an increasing in plastic limit and optimum water contents while the maximum dry unit weight values decrease. The compressive shear strength, California Bearing Ratio (CBR), swell and swell pressure is improved by using silica fume so that silica fume can be considered as a successful material in improving the soil properties.

scholarly journals Influence of porosity on the tensile strength of fine grained mortar containing fly ash, palm oil fuel ash and rice husk ash

2019 ◽  
Vol 513 ◽  
pp. 012027
Author(s):  
Zalipah Jamellodin ◽  
Hamidah Mohd Saman ◽  
Azmi Ibrahim ◽  
Suraya Hani Adnan ◽  
Nur Hafizah Abd Khalid
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
Rice Husk ◽  
Palm Oil ◽  
Rice Husk Ash ◽  
Palm Oil Fuel Ash ◽  
Fine Grained ◽  
Fuel Ash ◽  
Oil Fuel

Compressive and Flexural Strength of Fine Grained Mortar Containing Rice Husk Ash: A Review

2014 ◽  
Vol 1051 ◽  
pp. 757-762 ◽  
Author(s):  
Zalipah Jamellodin ◽  
Mohd Saman Hamidah ◽  
Suraya Hani Adnan ◽  
Noor Shuhada Mohammad ◽  
Wan Yuslinda Wan Yusof
Keyword(s):  
Grain Size ◽  
Rice Husk ◽  
High Performance ◽  
Rice Husk Ash ◽  
Partial Replacement ◽  
Innovative Technology ◽  
Future Research ◽  
Binder System ◽  
Fine Grained ◽  
Pozzolanic Additives

Fine Grained Mortar (FGM) offers a new innovative technology binder system to strengthen or repair concrete structures. The innovative technique is achieved by using a small maximum grain size of 1 mm for the mortars. Therefore, less than 2 mm of mortar thickness would be fitted between the strengthened layers. FGM also has high binder contents, by adopting different pozzolanic additives and high performance of plasticizers. Recently, the utilisation of supplementary of cementing materials such as Fly Ash (FA) and Rice Husk Ash (RHA) has a become an important in concrete industry. It has demonstrated significant influence in improving the strength of mortar. Most of the previous studies have focused on the FA to be replaced in the FGM. There is still lacking of research of using other pozzolanas in making FGM. This paper presents an overview on the use of FA and RHA as partial replacement of cement in mortar and FGM as well as future research that will be conducted by the authors.

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