"In concrete construction, the weight of the structure represents a large portion of the total load carried; thus, there is considerable advantage in reducing the weight of the concrete. To obtain this result, there are at least three approaches (1). The first method of producing lightweight concrete is by means of substituting a porous lightweight aggregate of low specific gravity for the ordinary aggregate. The second method relies on introducing large voids within the concrete or mortar mass; this is known as aerated, cellular or gas concrete. The third method is simply to omit the fine aggregate from the mix in order to obtain a large number of voids in the concrete.
For structural purposes, the first method is preferable to the others, since higher strengths can be achieved. The decrease in density or weight obtained with lightweight material is due to the presence of voids in the aggregate, but these voids will also reduce the strength of lightweight concrete as compared with normal weight concrete of the same paste content. However, it is possible by using a high cement content in lightweight concrete to obtain a high strength lightweight concrete. Recently, pure epoxy concrete has found application in construction because of its high compressive and tensile strengths as well as remarkable adhesive properties. The high cost has tended to limit extent of application.
A recent investigation by Mr. Kuo Chu Hu has been made at this University where epoxy resin was used as an admixture in ordinary concrete and some improvement in properties were noted with respect to compressive strength under job curing conditions. Since it was thought that this improvement might be more significant with lightweight concrete, this investigation was initiated to determine the effects of the addition of small quantities of epoxy resin on expanded slag concrete.
The investigation included three batches of stone concrete prepared with epoxy resin content at 0, 1 and 2% by volume, and a similar set for slag concrete making a total of 72 cylinders tested. Half of the specimens were cured under laboratory conditions and the other half cured under simulated job conditions. Compression and tensile strengths were determined in triplicate for all combinations of concrete type, epoxy content, and curing condition. In addition, duplicate tests of the modulus of elasticity were performed."--Introduction, pages 1-2.
Spooner, James E.
Best, John, 1925-2015
Bayless, Jerry R.
Waggoner, Raymond C.
Civil, Architectural and Environmental Engineering
M.S. in Civil Engineering
University of Missouri at Rolla
viii, 52 pages
© 1966 James Chun-Min Chou, All rights reserved.
Thesis - Open Access
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Chou, James Chun-Min, "The effect of epoxy resin in stone and slag concrete" (1966). Masters Theses. 5745.