Study of Low Density and High Strength Slag MTC System

Abstract:

With the demand of improving the second interfacial bonding strength and environmental protection, MTC cementing technology has obvious technical and economic advantages. However, due to containing lots of low-density materials and slurry treating agents, which make low strength, the application of low-density slag MTC cementing slurry system is restricted in the cementing of deep wells and low-pressure leakiness formations. According to the theory of particle distribution and based on particle size analysis of floating bead, micro silicon and slag, solid-phase proportioning design of low-density (1.35~1.55 g/cm³) slag MTC was carried out in this paper. By adjusting the adding amount of micro silicon and activators, the slag MTC cementing fluid system with the 24-hour compressive strength greater than 21.6MPa which has the density range of 1.35 to 1.55g/cm³ was get. This system has small initial consistency, short thickening transition time, low water loss and good rheological property. And at last, the mechanism of improving the strength of low-density slag MTC cementing fluid system was analyzed.

• Periodical: Advanced Materials Research (Volumes 953-954)
• Pages: 1628-1632
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.953-954.1628
• Online since: June 2014
• Authors: Di Hui Ma, Wei Jiang Jia
• Keywords: Activator, High Strength, Low Density, Particle Distribution, Slag MTC

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