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首页> 外文会议>SP-228; International Symposium on Utilization of High-Strength/High-Performance Concrete vol.1; 20050620-24; Washington,DC(US) >Entraining Air in High-Performance Concrete and Its Effect on Compressive Strength
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Entraining Air in High-Performance Concrete and Its Effect on Compressive Strength

机译：高性能混凝土中夹带空气及其对抗压强度的影响

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摘要

The effect of air entrainment on the compressive strength of high performance concrete is presented in this paper. Generally, an increase in the total air content of one percent decreases the compressive strength of concrete two to five percent. This rule of thumb was developed from research on normal strength concrete, but there is little data on the strength reduction due to entrained air in high performance concrete. The paper presents compressive strength test results of several high performance concrete mixtures with total air contents ranging from two to six percent. The compressive strength of the mixtures varied from 42.4 MPa (6150 psi) to 95.9 MPa (13,900 psi). The results of the study support the use of this rule of thumb for high performance concrete. Data are also presented on the increased dosage rate of air entraining agents required in low water to cementitious material ratio concrete.
机译：本文介绍了夹带空气对高性能混凝土抗压强度的影响。通常，总空气含量增加百分之一会使混凝土的抗压强度降低百分之二至百分之五。这个经验法则是从对普通强度混凝土的研究中发展而来的，但是关于高性能混凝土中夹带空气导致强度降低的数据很少。本文介绍了几种高性能混凝土混合物的压缩强度测试结果，其总空气含量为2％至6％。混合物的抗压强度从42.4 MPa（6150 psi）到95.9 MPa（13,900 psi）不等。研究结果支持将这种经验法则用于高性能混凝土。还提供了有关在低水灰比水泥质混凝土中所需的引气剂剂量增加的数据。

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