Development and Performance Evaluation of Coir Pith Ash as Supplementary Cementitious Material in Concrete

Journal of Engineering and Technological Sciences

Balagopal Venugopal¹ 

[1] Department of Structural and Geo-technical Engineering, School of Civil Engineering, Vellore Institute of Technology, Vellore-632 014, Tamilnadu,

关键词: supplementary cementitious material;    pozzolanic material;    agricultural waste;    concrete;   

DOI  :  10.5614/j.eng.technol.sci.2018.50.6.8

学科分类：工程和技术（综合）

来源: Institute for Research and Community Services ITB

【 摘 要 】

India is the third largest producer of coconuts in the world after Indonesia and Brazil. The production of coconuts generates enormous volumes of by-products, which are dumped in landfills, causing issues like soil and air contamination, pollution of groundwater and other water bodies, with hazardous impacts on plant and animal life. Coir pith and short fibers are by-products from the coir industry obtained during the extraction of long fibers and account for approximately 70% of the mature coconut husk. Coir pith ash (CPA) was prepared by heating the dried coir pith in a metallic vessel at a temperature of 400 °C for 4 hours. The current paper shows an elaborate technical study on the material properties and performance of CPA in blended cements. The properties of concrete investigated were setting time, workability, compressive strength, splitting tensile strength, flexural strength and ultrasonic pulse velocity values. The specimens were tested at curing ages of 7, 28, 56 and 90 days. The test results indicated that CPA has moderate pozzolanic properties, with 10% as optimum replacement percentage.

【 授权许可】

CC BY