Document Type
Thesis
Date of Award
5-31-1991
Degree Name
Master of Science in Civil Engineering - (M.S.)
Department
Civil and Environmental Engineering
First Advisor
Farhad Ansari
Second Advisor
William R. Spillers
Abstract
As one of the important characteristics of concrete, water-cement ratio controls porosity and thus strength and corrosion resistance of hardened concrete.
This paper presents a laboratory observation for determination of water-cement ratio of fresh concrete for quality control and quality assurance. The atomic absorption spectrophotometer and the flouresence spectrophtometer were used to determine the calcium concentration in cement solution of various water-cement ratio. The level of water-cement ratio investigated ranged from 0.4 to 0.55 which covers the most range of water-cement ratios in present practice. The result of lab experiments shows an immediate relation between the water-cement ratio and the calcium concentration in fresh concrete. Furthermore, the results were studied and analyzed using computer programming based on different types of cements.
The aim of these laboratory experiments were to develop a new method for rapid(15 minutes or less) determination of water-cement ratio in the paste.
Recommended Citation
Zhao, Jiong, "Determination of water-cement ratio in cement paste by atomic absorption spectrometry" (1991). Theses. 2687.
https://digitalcommons.njit.edu/theses/2687
