Title : SUN-CURED ALKALI ACTIVATED CONCRETE - SOME BASIC PROPERTIES
Authors : V. P. Prashanth1, Vishwanath K. Dalwai2, M. S. Sudarshan3 and R. V. Ranganath4
Publication : 23 - 26 October 2013
Volume :
Pages :
Price : 250
Abstract : The alkali activation of pozzolanic materials has become an important area of research as it is possible to use these materials to synthesize in-expensive, environmentally sound construction materials. Fly ash (FA), Ground Granulated Blast Furnace Slag (GGBFS) which are available in abundance, can be used to synthesis AAC (Alkali Activated Concrete). It has been reported that the concrete made from alkali activation exhibit superior properties than that made from ordinary Portland cement in thermal the mix proportioning, effect of FA and GGBFS on the fresh properties of AAC. Hence an attempt has been made to optimize the binder content to develop FA and GGBFS based AAC which is air curable at atmospheric temperature. This paper presents the results of optimal values of binder content and some basic properties of AAC using fly ash and GGBFS as base materials. The performances of different AAC mixes were studied at constant total water content (120 kg/m3) and cured at “sun-dry curing regime”. Properties such as compressive strength, water absorption, water permeability, ultrasonic pulse velocity(UPV), drying shrinkage, abrasion resistance and split tensile strength of concrete were studied for different molarities of alkali solution ( NaOH- 8M, 16M ). Experimental results show that by considering fly ash and GGBFS as base materials, it is possible to produce eco-friendly, high performance, sundry cured alkali activated concrete