DUSTPROOF CEMENT COMPOSITION WITH IMPROVED STRENGTH

摘要

PROBLEM TO BE SOLVED: To obtain a composition hardly causing dust and capable of producing a concrete or a mortar having improved strength by adding a specific proportion of polytetrafluoroethylene to be made fibril, an alcoholic antifoaming agent and a silicon-based antifoaming agent. SOLUTION: This composition contains 0.01-0.1 pt.wt. polytetrafluoroethylene to be made fibril, and 0.001-1.0 pt.wt. alcoholic and/or silicon-based antifoaming agent based on 100 pts.wt. cement. The whole or the major portion of the polytetrafluoroethylene to be made fibril is preferably fibrils to heighten the dustproof effect, and the fibrils are formed by a compressing and shearing action when producing the dustproof cement composition by mixing the polytetrafluoroethylene to be made fibril with the cement and the like. The dustproof cement composition has good handleability.