Effect of Acidic Environment on Hollow Sandcrete Blocks

Effect of Acidic Environment on Hollow Sandcrete Blocks

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2017 by IJETT Journal
Volume-47 Number-7
Year of Publication : 2017
Authors : Samson Duna., Fwangmun B.Wamyil
DOI :  10.14445/22315381/IJETT-V47P266

Citation 

Samson Duna., Fwangmun B.Wamyil "Effect of Acidic Environment on Hollow Sandcrete Blocks", International Journal of Engineering Trends and Technology (IJETT), V47(7),399-405 May 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
This research investigated the effects of Tetraoxosulphate VI acid on commercially produced hollow sandcrete blocks. Seventy two (72) hollow sandcrete blocks were produced for this research. Acid concentrations of pH 1.3, 1.4, 1.5, 1.7, 2.0 and 7.0 (control sample) were prepared and the sandcrete blocks immersed in the various acid concentrations for 24, 72, 168 and 672 hours. The density, water adsorption and compressive strength of the blocks were measured. The research concluded that there was a slight effect of acid concentration on compressive strength of the blocks with the control sample immersed at (pH 7) having the overall highest value of 5.52N/mm2 at the end of 672hour sampling while the others (pH 1.3, 1.4, 1.5, 1.7, 2.0) have highest compressive strength values at the 72hour sampling (corresponding to 5.65, 5.52, 5.41, 5.21 & 5.25 N/mm2 respectively). There was also a reduction in water absorption in the acidic medium while there was no effect of acidity on the density of blocks.

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Keywords
sandcrete blocks, compressive strength, low pH, acid, Tetraoxosulphate VI acid.