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chan chao su hua ji gao qiang hun ning tu de he yi xing yan jiu
Author(s): 
Pages: 45-51
Year: Issue:  3
Journal: Yunnan Building Materials

Keyword:  高强混凝土超塑化剂和易性混凝土坍落度普通混凝土混凝土稠度抗压强度贯入度坍落度试验新拌混凝土;
Abstract: 在低水灰比的富混凝土中掺入超塑化剂后,很容易获得高强混凝土。它与普通混凝土相比,塑性太高及粘着性很大,故本文认为仅用坍落度试验来衡量高强混凝土的和易性是欠妥的。用后掺法将超塑化剂掺入高强混凝土比同掺法可节省水泥10%左右;用二次掺入法可将混凝土随时间损失的坍落度恢复到新拌混凝土的水平,而抗压强度保持不变。
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