Title : EFFECT OF TEMPERATURE ON SELF-COMPACTING CONCRETE
Authors : Utkarsh Kumar Yadav, V K Verma
Publication : 8 - 10, October 2015
Volume : 2
Pages :
Price : 250
Abstract : This paper presents the results of Normal Conventional Concrete (NCC) and Self- Compacting Concrete (SCC) subjected to the temperature of 150ºC, 200ºC, 250ºC and 300ºC for the duration of 1.5, 2, 2.5, 3 hours. Total 48 cylindrical specimens of size 150 mm x 300 mm are cast using M40 grade of concrete. Results of Normal Conventional Concrete shows an increase of about 6 to 11 % in compressive strength of cylinder at 150°C compared to room temperature when exposed for 1.5 to 3 hour duration. Compressive strength at 200°C shows a marginal increase of strength by 3%. There is a reduction in the compressive strength of cylinder at temperature from 250°C to 300°C. The compressive strength values at 300°C are observed 6.9% lesser compared to values at room temperature. Strength of Self-Compacting Concrete increases from 3.5 to 9.2 % when exposed to the temperature of 150°C for the duration 1.5 to 3 hour. When SCC is exposed to the temperature from 150°C to 200°C, an increase in the compressive strength is observed from 5.7 to 9.3%. Further an increase of 4% to 6.6% is noticed in the strength of SCC when exposed to the temperature between 200°C and 250°C for the duration of 3 hours. The increase in strength of SCC at higher temperature (200°C to 300°C) are attributed to the increase in the forces (Van der Wall’s forces) between the gel particles of concrete due to the water removal. From the study it may be concluded that for the temperature range of 250°C to 300°C, SCC may be used in place of NCC.