high grade concrete的意思|示意

Microwave heating and infrared ray heating are used in maintenance of asphalt concrete pavement of high grade expressways.

微波加热和红外加热现已逐渐应用到高等级公路沥青混凝土路面养护和维修中。

The paper discusses essentials for high-grade concrete that in its proportioning design should be noticed, which provides a reference for concrete proportioning design.

论述了高标号混凝土在进行配合比设计应注意的要点，为混凝土配合比设计提供参考。

This paper analyses the influence factors of high-grade highway rolling concrete pavement smoothness in detail and puts forward specific measures to assure pavement smoothness.

本文对高等级公路碾压混凝土路面平整度的影响因素作了较为详细的分析，提出了保证路面平整度的具体措施。

The results show that the modified lignosulfonate has a better water-reducing performance as effectively as high grade concrete water reducing agent.

结果表明，改性木质素磺酸盐具有较好的减水性能，且达到高效减水剂的减水性能。

This paper emphasizes the theoretical foundation, construction technology and practical effect of high-grade road-surface concrete mixed with fly ash.

为了更好地在路面推广应用粉煤灰，本文着重介绍在高等级路面砼中掺用粉煤灰的理论依据，施工技术及工程应用效果。

There are two kinds of pavement for the high grade highways, i. e. bituminous concrete pavement and cement concrete pavement.

高等级公路路面有沥青混凝土路面和水泥混凝土路面两类。