HEALING AGENT FOR SELF-HEALING CEMENTIOUS MATERIAL

申请号 PCT/NL2011000026 申请日 2011-04-06 公开(公告)号 WO2011126361A8 公开(公告)日 2012-10-11
申请人 UNIV DELFT TECH; JONKERS HENDRIK MARIUS; 发明人 JONKERS HENDRIK MARIUS;
摘要 The invention provides a process for the production of a cementious material. The process comprises mixing cement starting materials and a particulate healing agent to provide the cementious material. The healing agent comprises coated particles, wherein the coated particles comprise bacterial material and additive. The bacterial material is selected from the group consisting of a bacterium, a lyophilized bacterium and a bacterial spore of a bacterium. The present invention solves these problems, as (substantially leakage-proof) tablets containing the actual healing agent may neither interfere with either the workability of the liquid mixture ("cementious material") nor negatively affect properties of either mixture or final material (hardened concrete), even when applied in large quantities. During crack formation in cementious based constructions, the particles also crack, and healing agent is released.
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