| 摘要 |
<p>PURPOSE:To obtain a high performance mortar material by mixing a preset amount of blast furnace slag fine powder, contraction reducer, cement resinous material together, and by filling a mortar for which the mixing amount of consistancy material and of mineral material ultra fine powder, is reduced, into a joint part. CONSTITUTION:To a mortar of unit cement ratio; 0.30-0.60, and of sand cement ratio; 1-2.5, a gas expansion generating agent is added by 0.5-1.5weight% referenced to the weight of cement in the mortar, and 0.02-0.03weight% of consistancy material, 0.5-3weight% of mineral material ultra fine powder, and 0.5-1.5weight% of water reducing agent, are added thereto. In addition, 1-4weight% of blast furnace slag ultra fine powder, 1-3weight% of contraction reducing agent, and 3-8weight% of cement expansion material, are added to the mortar, for which a bleeding ratio is defined as no more than 0.1%, and a flow value as no less than 230mm, and the mortar is filled in a concrete joint part and is thus constructed. The generation of defects can thus be prevented.</p> |
