Competition Day!

The competition this year was held on April 10, 2016 at Cook’s Pond in Denville, NJ. Unfortunately this year, teams in the Metropolitan regional competition were not able to race. This was determined by the town of Denville due to the cold water conditions.  However, the team was still able to go to competition and take part in the swamp test and the presentation portion. TCNJaws made it through transportation, which has been rather difficult in the past.  Below is the suspension system that the team created to cradle the canoe and absorb any possible shock that might occur during transportation.

IMG_4568 IMG_4578

During competition, TCNJaws passed the swamp test. This test requires the team to place their canoe in the pond, fill the inside with water, and completely submerge the hull. If the hull does not float back up and break the surface of the water the team cannot participate in the race portion of the competition. As you can tell we were all very excited that we passed the swamp test.


The team placed fourth overall at competition and is excited to pass down their knowledge and experience onto next year’s team.

Final Mix

The table below outlines the various components of our final mix and their proportions.

Material TypeMaterial NameWeight (lbs)
Cementitious MaterialsPortland Cement (Type I)0.341
Slag Cement0.643
Silica Fume0.103
AggregatesLS300 Cenospheres0.530
Poraver (0.5-1.0 mm)0.585
Sikament 686 (SP)0.030
Sika Air (AE)0.023

Mix Day!

After countless hours of design, construction, and testing, we were able to successfully cast our canoe on 2/24. We’d like to once again thank our sponsors and donors for allowing us to take part in this project.


Winter Break Update

Our main goals for winter break were construction oriented. Our first task was designing and building a table to build our form on.


Next, we created our mold’s cross sections in AutoCAD and printed them out full-scale in order to cut each plywood cross-section using a bandsaw. Each cross-section was then centered on our table using a laser level in one foot increments.


In order to create the actual canoe hull, one inch strips of lauan were placed along the cross-sections and attached using a nail gun. To cap the ends of the canoe, Styrofoam blocks were formed into the appropriate shapes and connected to the endmost cross-sections.



Hull Model Flume Testing

Please click on the link to see the video of our 3D printed model in the flume:


When we 3D printed our hull design, we put it through an extensive flume test to try and calculate the drag that was exerted on the hull. We initially calculated the drag to be 0.13 lbs as our theoretical value and then we had a measured experimental drag around 0.09

Mix Designs 3 and 4

Material quantities for our third and fourth mix designs are provided below. The goal of these trials were to come up with lightweight mixes without using Elemix (expanded polystyrene) in order to increase density and compressive strength. Two different sizes of Poraver (recycled glass beads) were used in each mix. Mix 4 incorporated an air-entraining admixture to increase air content percentage.

Mix 4

Material TypeMaterial NameWeight (lbs)
Cementitious MaterialsPortland Cement (Type I)0.77250
Silica Fume0.13500
Poraver (0.25-0.5 mm)0.47650
Poraver (0.5-1.0 mm)0.37500
Sikament 686 (SP)0.01300
Sika Air (AE)0.01300
Additional Water for Aggregate Absorption0.20850

Mix 3

Material TypeMaterial NameWeight (lbs)
Cementitious MaterialsPortland Cement (Type I)0.35000
Silica Fume0.00505
Poraver (0.1-0.3 mm)0.25000
Poraver (0.5-1.0 mm)0.08000
Sikament 6860.03500

Hull Design Update

The design of the hull is well underway.  The team decided to develop three different hulls to test to choose the most optimal shape. These designs were developed after extensively researching nationally ranked canoes from previous years. Different aspects of the canoe were also studied to determine how each constituent enhanced speed, efficiency, buoyancy, and maneuverability. Aspects such as the placement of the longest beam, the beam to length ratio, and the radius of the rocker were different for each design.

These three hulls were created using Bentley’s Maxsurf® Modeling program and were analyzed using Maxsurf® Resistance. Our goal is for each design to be printed using the 3D printer so we can measure drag forces and observe overall movement through the water. The first design which can be seen below in Figure 1 was redrawn using Solidworks® and is in the process of being 3D printed.


Figure 1: Hull Design 1

Mix Design #2

Our second mix design was created on 10/16/15 and included six 2″ x 2″ x 2″ cubes:

Material TypeMaterial NameWeight (lbs)
Cementitious MaterialsPortland Cement (Type I)0.27650
Silica Fume0.00405
Poraver (0.1-0.3 mm)0.32380
Sikament 6860.03500