#GORMAN BROTHER ASPHALT EMULSION MILL FULL#

Two concrete mixers are used to cast laboratory mixtures with batch sizes of 2 cubic feet to 8 cubic feet. The laboratory is equipped with three concrete mixers. Therefore, the laboratory purchased a RHINO Jaw Crusher in order to further process material.

#GORMAN BROTHER ASPHALT EMULSION MILL FULL#

Especially when looking at Cold In-place Recycling or Full Depth Reclamation, it is critical to be able to control the gradation of crushed material. Often, it is necessary to crush pavement cores from the field in order to break them down for future use. Figure 4 shows the mill in the laboratory.įigure 4: Asphalt Emulsion Laboratory Mill With this mill, we are able to produce our own asphalt emulsions and allows research into emulsifier chemistries, asphalt cement types, asphalt cement modification, influence of material temperature, pH, and other factors of asphalt emulsion formulation development. The laboratory has a laboratory bench-top scale Herbert Rink asphalt emulsion mill. These two machines are shown in Figure 3.įigure 3: Wirtgen WLM 30 mixer & WLB 10S foaming machine (top) and “The Foamer” from PTI (bottom) The PTI machine was specifically design for WMA mixtures. This mixer is useful for making large batch samples that would not be possible to produce in the standard five gallon (19 liter) paddle mixer. The Wirtgen also comes with a dual-shaft pugmill mixer capable of mixing up to 66 lb (30 kg) of material (WLM 30). The Wirtgen machine was specifically designed for FDR foaming design, but has also been used in industry and academia to produce CIR and WMA mixtures. The lab has two foaming machines: the Wirtgen WLB 10S foaming machine and “The Foamer” from Pavement Technology Inc. Second, it is a type of method to produce Warm Mix Asphalt (WMA). First, it can be used for in place pavement rehabilitation, including Cold In-place Recycling (CIR) and Full-Depth Reclamation (FDR). Figure 2 shows a picture of the slab compactor.Īsphalt foaming has two applications in pavement materials. However, circular samples can be cored out of the slab compactor, using the lab coring machine and necessary saws.

Gyratory compactors compact samples in a rotational motion that while extremely convenient to produce, have been known to produce air voids distributions that are not representative of field conditions. The slab compactor is essential for producing samples for the Single-Edge Notch Beam fracture test and core-shaped samples that are not produced in a gyratory compactor.

The slab compactor is a custom made compaction device, capable of producing samples 12x12 inches (30.5x30.5 cm) in width and height, and two to four inches (5.1-10.2 cm) thick. All gyratory compactors conform to AASHTO T312/ASTM D6925.įigure 1: Troxler Model 5850 (top) and Pine Instrument Company AFG2AS (bottom) Figure 1 below shows the Troxler 5850 and Pine AFG2AS. The amount of shear energy expended during compaction is becoming an important parameter to capture while evaluating all types of pavement materials that require compaction in the field. The Pine AFG2AS is the latest compactor model from Pine and includes shear measurement instrumentation. This is especially important when compacting Cold In-place Recycling or Full-Depth Reclamation samples. The Troxler 5850 is capable of compacting samples containing water, with specially designed perforated molds and a catch-basin below the molds to capture any water forced out of the sample during compaction.

Of special interest are a Troxler Model 5850 and a Pine Instrument Company AFG2AS. The lab has seven gyratory compactors in total. The equipment available is described in more detail below. For Portland cement concrete, three concrete mixers are available to cast laboratory mixtures. For asphalt concrete, these methods include gyratory compactors, a slab compactor, asphalt foaming devices, an asphalt emulsion mill, and a rock crusher. There are several methods of producing pavement samples in the lab at the University of Arkansas. Laboratory capabilities include material production, aggregate testing, asphalt cement testing, Portland cement concrete testing, asphalt concrete testing, and asphalt emulsion mixture testing. Pavement material research includes the areas of pavement maintenance, pavement rehabilitation, rigid pavement, and flexible pavement. This webpage briefly describes the laboratory capabilities of pavement materials in the Civil Engineering department at the University of Arkansas. Laboratory Capabilities Click here for a.

Gorman brother asphalt emulsion mill