Document Type
Thesis
Date of Award
5-31-1986
Degree Name
Master of Science in Civil Engineering - (M.S.)
Department
Civil and Environmental Engineering
First Advisor
Charles Franklin Peck
Second Advisor
Methi Wecharatana
Third Advisor
John R. Schuring
Abstract
This thesis has a two-fold objective. One, to develop a suitable testing apparatus in the labaratory to simulate the effect of field pumping of concrete and two, to conduct some preliminary tests to investigate the feasibility of the testing apparatus.
Pumping of concrete has been practiced in the U.S.A. since 1930. The behaviour of concrete in a pipeline has not been studied in much detail while development in the pumping technology raced ahead of the research in this field. Previous studies done in this field have clearly indicated the need for a laboratory simulation of pumping process in order that the behaviour of concrete under pressure in a pipeline can be studied in depth.
A static testing apparatus is developed based on the findings of numerous field trips that the author conducted and on the previous work in the field. A static laboratory apparatus has an advantage over a dynamic one in that the concrete can be held under pressure for varied periods of time in a limited space.
Tests conducted to investigate the feasibility of the testing apparatus included slump test, 28-day compressive strength test and the test for the air content. These tests gave the expected results viz. a loss in slump and the air content and an increase in strength after pumping.
It was concluded that the static testing apparatus developed here reliably duplicates effects of field pumping of concrete.
Recommended Citation
Kenkre, Dinesh Vithal, "Study of the effects of pumping pressure on the properties of fresh concrete" (1986). Theses. 3415.
https://digitalcommons.njit.edu/theses/3415
