碾压电竞竞猜菠菜外围app下载(RCC)

碾压电竞竞猜菠菜外围app下载的横幅

另一种电竞竞猜菠菜外围app下载

Roller-compacted concrete, or RCC, takes its name from the construction method used to build it. It's placed with conventional or high-density asphalt paving equipment,then compacted with rollers.

Roller-compacted concrete has the same basic ingredient as conventional concrete: 水泥, 水, 和聚合, 例如砾石或碎石.

But unlike conventional concrete, it's a drier mix—stiff enough to be compacted by vibratory rollers. 一般来说,RCC是没有接缝的. It needs neither forms nor finishing, nor does it contain dowels or steel reinforcing.

These characteristics make roller-compacted concrete simple, fast, 和 economical. 查看或下载RCC情况说明书.

通过观看电竞竞猜菠菜外围app下载的网络研讨会了解更多信息
路面用碾压电竞竞猜菠菜外围app下载

碾压电竞竞猜菠菜外围app下载的设计与试验“,

艰难、快速、经济

These qualities have taken roller-compacted concrete from specialized applications to mainstream pavement. 今天, RCC is used for any type of industrial or heavy-duty pavement. 原因很简单. RCC has the 强度 和 performance of conventional concrete with the economy 和 simplicity of asphalt. 使用寿命长,维护少, 碾压电竞竞猜菠菜外围app下载的低初始成本增加了经济和价值.

在日志

RCC成立于七十年代, when the Canadian logging industry switched to environmentally cleaner, 陆基原木分选方法. The industry needed a strong pavement to st和 up to massive loads 和 specialized equipment. Yet economy was equally important: log-sorting yards can span 40 acres or more. RCC met this challenge 和 has since exp和ed to other heavy-duty applications.

今天, 强度时使用RCC, 耐用性, 经济是首要需求:港口, 联运, 和 military facilities; parking, 存储, 和 staging areas; streets, 十字路口, 和低速公路.

没有车辙,没有坑

The high 强度 of RCC pavements eliminates common 和 costly problems traditionally associated with asphalt pavements.

碾压电竞竞猜菠菜外围app下载路面:

  • 抵抗车辙
  • 跨软局部路基
  • 在沉重、集中的负荷下不会变形
  • 不因燃料和液压油泄漏而恶化
  • 在高温下不会软化

独特的混合,独特的结构

RCC owes much of its economy to high-volume, high-speed construction methods.大容量搅拌机引领了潮流. Normally, RCC is blended in continuous-mixing pugmills at or near the construction site. These high-output pugmills have the mixing efficiency needed to evenly disperse the relatively small amount of 水 used.

Dump trucks transport the RCC 和 discharge it into an asphalt paver, which places the material in layers up to 10-inches thick 和 42-feet wide.

Compaction is the most important stage of construction: it provides density, 强度, 平滑度, 和表面纹理. Compaction begins immediately after pla水泥 和 continues until the pavement meets density requirements.

固化可以确保路面坚固耐用. 和任何类型的电竞竞猜菠菜外围app下载一样, curing makes moisture available for hydration—the chemical reaction that causes concrete to harden 和 gain 强度. A 水 cure sprays or irrigates the pavement to keep it moist. 喷雾膜也可以用来密封内部的水分.

When appearance is important, joints can be saw cut into the RCC to control crack location. If economy outweighs appearance, the RCC is allowed to crack naturally.

一旦固化,路面就可以使用了. An asphalt surface is sometimes applied for greater 平滑度 or as a riding surface for high-speed traffic.

经济. 性能. 多功能性.

对RCC来说,节约是发明之母. The need for a low-cost, high-volume material for industrial pavements led to its development.

Low cost continues to draw engineers, owners, 和 construction managers to RCC. But today's RCC owes much of its appeal to performance: The 强度 to withst和 heavy 和 specialized loads; the 耐用性 to resist freeze-thaw damage; 和 the versatility to take on a wide variety of paving applications. From container ports to parking lots, RCC is the right choice for tough duty.

相关阅读

For more on RCC, see the PCA guide for roller-compacted concrete pavements, 碾压电竞竞猜菠菜外围app下载路面指南, SN298.

Use of Chemical Admixtures in 路面用碾压电竞竞猜菠菜外围app下载,
天Hazaree, V.; Ceylan, Halil; Taylor, Peter; Gopalakrishnan, 王Kasthurirangan;, Kejin, 和Bektas, Fatih, SN3243硅酸盐水泥协会,2010. 
This research attempts to resolve some of the problems in using roller compacted concrete. Ten most widely used chemical admixtures were tested in a typical RCC mixture. It is observed that each admixture offers distinct benefits 和 improves different properties of fresh RCC including changing the setting behavior 和 finishibility. A set of recommendations is offered along with precautions for using these admixtures  individually.  It is anticipated that this work will lead to the better characterization of different properties of RCC 和 use of chemical admixtures with greater confidence.
 
碾压电竞竞猜菠菜外围app下载路面特性及效益图.

欲了解更多信息,请访问 rccpavementcouncil.org

视图 碾压电竞竞猜菠菜外围app下载案例历史