An Experimental Study on Strength Development in Concrete by Incorporating Rice Husk Ash as Replacement to Cement with Recycled Aggregate for Low Volume Roads

2020 ◽  
pp. 679-691
Author(s):  
D. Sai Bharadwaj ◽  
Adepu Ramesh
Keyword(s):  
Experimental Study ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Recycled Aggregate ◽  
Strength Development ◽  
Low Volume Roads ◽  
Low Volume

scholarly journals Performance of Low-Volume Roads with Wearing Course Layer of Silty Sandy Soil Modified with Rice Husk Ash and Lime

2016 ◽  
Author(s):  
Marcos Musso Laespiga ◽  
Leonardo Behak Katz
Keyword(s):  
Rice Husk ◽  
Sandy Soil ◽  
Rice Husk Ash ◽  
Surface Condition ◽  
Silty Sand ◽  
Environmental Benefit ◽  
Final Disposal ◽  
Low Volume Roads ◽  
Low Volume ◽  
Rice Milling

Rice husk ash (RHA) is a by-product of rice milling. Its use as soil stabilizer is a way to replace the final disposal with environmental benefit. However, RHA is not cementitious itself but when mixed with lime forms cements which improve the soil properties. A research of performance of a silty sandy soil modified with RHA and lime as wearing course layer of low-volume roads was conducted through two full-scale test sections with different pavements built in Artigas, northern Uruguay. The alkaline reactivity of RHA is low because the husk burning is not controlled. The soil-RHA-lime mix design was conducted according to the Thompson’s Method. The pavement test sections were monitored through deflection measures by Benkelman beam and observations of surface condition. The deflections decreased over time in both test sections due to the development of cementation of the study materials. After one year, the dust emission was reduced, the wet skid resistance of pavement surfaces improved and there was not rutting. The researched pavements have had a good performance under the existing traffic and environmental conditions, demonstrating that wearing course layer of silty sand modified with RHA and lime is an alternative to improve the condition of low-volume roads and to replace the final disposal of RHA, with environmental, social and economic benefits.DOI: http://dx.doi.org/10.4995/CIT2016.2016.3451

scholarly journals Performance of Low-Volume Roads with Wearing Course of Silty Sand Modified with Rice Husk Ash and Lime

2016 ◽  
Vol 18 ◽  
pp. 93-99 ◽  
Author(s):  
Leonardo Behak ◽  
Marcos Musso
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Silty Sand ◽  
Low Volume Roads ◽  
Low Volume

scholarly journals Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Yun Yong Kim ◽  
Byung-Jae Lee ◽  
Velu Saraswathy ◽  
Seung-Jun Kwon
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Polymerization Reaction ◽  
Strength Development ◽  
Geopolymer Concrete ◽  
Portland Cement Concrete ◽  
Mix Proportion ◽  
Strength And Durability ◽  
Alkali Activated

This paper describes the experimental investigation carried out to develop the geopolymer concrete based on alkali-activated rice husk ash (RHA) by sodium hydroxide with sodium silicate. Effect on method of curing and concentration of NaOH on compressive strength as well as the optimum mix proportion of geopolymer mortar was investigated. It is possible to achieve compressive strengths of 31 N/mm2and 45 N/mm2, respectively for the 10 M alkali-activated geopolymer mortar after 7 and 28 days of casting when cured for 24 hours at 60°C. Results indicated that the increase in curing period and concentration of alkali activator increased the compressive strength. Durability studies were carried out in acid and sulfate media such as H2SO4, HCl, Na2SO4, and MgSO4environments and found that geopolymer concrete showed very less weight loss when compared to steam-cured mortar specimens. In addition, fluorescent optical microscopy and X-ray diffraction (XRD) studies have shown the formation of new peaks and enhanced the polymerization reaction which is responsible for strength development and hence RHA has great potential as a substitute for ordinary Portland cement concrete.

Influence of rice husk ash on mechanical properties and fire resistance of recycled aggregate high-calcium fly ash geopolymer concrete

2020 ◽  
Vol 252 ◽  
pp. 119797 ◽  
Author(s):  
Peem Nuaklong ◽  
Pitcha Jongvivatsakul ◽  
Thanyawat Pothisiri ◽  
Vanchai Sata ◽  
Prinya Chindaprasirt
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Rice Husk ◽  
Fire Resistance ◽  
Rice Husk Ash ◽  
Recycled Aggregate ◽  
Geopolymer Concrete ◽  
High Calcium ◽  
High Calcium Fly Ash

Experimental study on partial replacement of cement with rice husk ash in paver blocks

2020 ◽  
Author(s):  
R. K. Sangeetha ◽  
S. Karthi ◽  
K. S. Mounishbalaji ◽  
K. S. Praveenraj ◽  
M. Ragunath
Keyword(s):  
Experimental Study ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Partial Replacement
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