Journal of
Civil Engineering and Construction Technology

  • Abbreviation: J. Civ. Eng. Constr. Technol.
  • Language: English
  • ISSN: 2141-2634
  • DOI: 10.5897/JCECT
  • Start Year: 2010
  • Published Articles: 139

Full Length Research Paper

Effect of heavy metal and magnesium sulfate on properties of high strength cement mortar

B. Madhusudana Reddy* and I. V. Ramana Reddy
  Department of Civil Engineering, Sri Venkateswara University (S. V. U.) College of Engineering, Sri Venkateswara (S. V.) University, Tirupati -517502, Andhra Pradesh, India.
Email: [email protected]

  •  Accepted: 07 June 2011
  •  Published: 31 August 2011



The effect of lead (Pb) present in mixing water on compressive strength, setting times, soundness and magnesium sulfate attack on high strength cement mortar was experimentally evaluated. Cement mortar specimens were cast using deionised water and lead (Pb) spiked deionized water for reference and the test specimens as mixing waters respectively. On comparison with reference specimens, at higher concentrations of lead in mixing water, test samples had shown considerable loss of strength, and also their setting times had significantly increased. However, at 2000 mg/L concentration of lead (Pb), the compressive strength marginally increased. Apart from that when reference specimens and test specimens were immersed in various concentrations of magnesium sulfate solution at different immersed ages, the loss in compressive strength was found  to have been slightly less in test specimens than that in reference specimens. X-ray diffraction (XRD) technique was employed to find out main compounds.


Key words: Cement mortar, lead (Pb), silica fume (SF), magnesium sulfate, superplasticiser (SP).