low-grade concrete的意思|示意

The deterioration is accelerated because the strength grade of concrete is too low, depth of cover too thin, and drain off water unsuitable.

调查表明，原设计混凝土标号过低，保护层过薄，桥面排水不当，加速了劣化过程。

This article discussed from three-axis concrete pavement construction point of view briefly in the low-grade cement concrete pavement construction, how to control good road surface roughness.

本文从三轴式水泥混凝土摊铺机施工的角度出发，简要阐述了在低等级水泥混凝土路面施工中，如何控制好路面平整度。

The karst geological condition, the design and construction, and the settlement observation result of the low-grade plain concrete pile composite foundation for the Longgang Culture Center in Shenzh.

介绍了深圳市龙岗文化中心的岩溶地质条件、复合地基设计和施工情况；沉降观测结果表明，在岩溶地区使用素混凝土桩复合地基技术是可行的。

The test results show that low grade cement, replacement of cement by fly ash, and adding some carbon fibers are all helpful in improving the self-healing performance of concrete.

结果表明：选用低强度等级水泥、用粉煤灰部分取代水泥以及加入纤维都可以在一定程度上提高混凝土的自愈合效果。

The low grade of concrete and negative moment reinforcement descending cause the appearance of concrete crack in a workshop floor.

某工业厂房现浇混凝土楼面由于混凝土抗压强度偏低和负弯距钢筋下移，造成了抗弯承载力不足，出现了大量裂缝。

But bad construction control results in some low concrete grade of foundation piles and some broken piles.

在施工中，由于管理不善，造成部分基桩砼标号低于设计标号，并伴随有断桩等现象的工程质量事故。