STUDY ON OPTIMIZATION OF HIGH PERFORMANCE CONCRETE ADMIXTURES  

高性能混凝土的外加剂优化研究(英文)

作　　者：刘俊龙[1,2] 麻海燕[1] 李强[1,2] 陈树东[2] 张云清[1] 

机构地区：[1]南京航空航天大学航空宇航学院 [2]浙江建设职业技术学院建筑工程系

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2011年第2期206-210,共5页南京航空航天大学学报（英文版）

基　　金：Supported by the National Basic Research Programe of China("973"Program)(2009CB623203);the Construction Department of Zhejiang Province Foundation(1006);the Education Department of Zhejiang Province Foundation(Y200909029);the Doctoral Innovation Foundation of Nanjing University of Aeronautics andAstronautics(BCXJ07-04)~~

摘　　要：Influences of admixtures on the workability and strength of high performance concrete （HPC） are in- vestigated. The types of investigated admixtures include naphthalene series high range water reducing agent, polycarboxlic series high range water reduce agent and sodium sulfate hardening accelerating agent. Two kinds of curing condition, namely steam curing condition and standard curing condition, are adopted. The result shows that HPC, added with polycarboxlic series of high performance water reducer, has high workability and strength, while sodium sulfate accelerating agent causes poor workability and low strength. Thus for vapor-cured HPC and its formulations, naphthalene series high range water reducing agent with less sodium sulfate should be given pri- ority. Therefore, the differences of curing conditions should be considered when selecting HPC admixtures.运用不同减水剂和早强剂配制高性能混凝土(High performance concrete,HPC),测定其工作性、标准养护强度和蒸汽养护强度,研究了HPC的外加剂选用原则。结果表明,掺加聚缩酸系高效减水剂有利于HPC获得高工作性和高强度。硫酸钠早强剂将导致工作性不好,强度降低。对于蒸汽养护的HPC制品,应该优先采用硫酸钠含量低的萘系高效减水剂。因此,HPC外加剂的选择应该考虑养护条件的差异。

关 键 词：high performance concrete high performance water reducer hardening accelerating agent SLUMP compressive strength 

分 类 号：TU528[建筑科学—建筑技术科学]