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Cement composition for extrusion

  • US 5,047,086 A
  • Filed: 04/28/1989
  • Issued: 09/10/1991
  • Est. Priority Date: 05/06/1988
  • Status: Expired due to Term
First Claim
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1. A cement composition for extrusion, consisting of 60-75 wt % cement mortar including about 50 wt % of cements and 16-21 wt % of aggregates, 3-15 wt % crushed pulp fiber and 0.2-1 wt % of at least one member selected from the group consisting of alkylcellulose and hydroxyalkylalkylcellulose in a 2% aqueous solution having a viscosity of 80,000 cps or more at 20°

  • C.

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