Use of Rice Hull Ash to Reduce Temperature in High-Strength Mass Concrete

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Title: Use of Rice Hull Ash to Reduce Temperature in High-Strength Mass Concrete

Author(s): P.K. Mehta and D. Pirtz

Publication: Journal Proceedings

Volume: 75

Issue: 2

Appears on pages(s): 60-63

Keywords: adiabatic conditions; calorimeters; compressive strength; cooling; heat of hydration; mass concrete; portland cements; rice hulls; silica; temperature rise (in concrete).

Date: 2/1/1978

Abstract:
It is shown that a highly reactive silica ash produced by incineration of rice hulls can be sucessfully used in mass concrete applications requireing high strengths without excessive rise in adiabatic temperature. In a concrete mixture when 30 percent rice hull ash by weight of the total cementing material was present, the 7-day and the 28-day compressive strengths were higher and the adiabatic temperature rise waas 18 F (10 C) lower than the control concrete.