Assessment of Water Film Thickness, Paste Film Thickness and the Fresh Properties of Cement Mortar

Author(s):

Smit Kotak , L.J.I.E.T.,Ahmedabad; Parth Thaker, L.J.I.E.T.,Ahmedabad

Keywords:

packing density, mortar, fresh properties, water film thickness, paste film thickness, fine aggregate

Abstract:

The fresh properties of concrete are mostly dependent on the fresh properties of its mortar portion; therefore, the mortar design can be taken as an initiative in the mix design of concrete. In the mortar phase of a concrete mix, the water content must be more than enough to fill the voids between the cement and fine aggregate particles. The paste content must be more than enough to fill the voids of fine aggregate particles, so that the excess water can cover each solid particle and excess paste can cover each fine aggregate particle. The combined effects of excess water, excess paste and surface area of cement and fine aggregate are determined in terms of water film thickness (WFT) and paste film thickness (PFT). In this study, wet packing method was used to measure the packing density of fine aggregate and mortar. The water film thickness, paste film thickness, flow ability, cohesiveness and adhesiveness of mortar shall be determined at maximum dosage of superplasticizer (SP) by varying water cement ratio and cement fine aggregate proportions. Test results indicates that water film thickness results were varied from 0.003 µm to 0.388 µm while the paste film thickness results were varied from 50.5 µm to 127.9 µm.

Other Details:

Manuscript Id	:	IJSTEV2I12182
Published in	:	Volume : 2, Issue : 12
Publication Date	:	01/07/2016
Page(s)	:	407-412

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