US Army Cold Regions Research and Engineering Laboratory, 72 Lyme Road, Hanover, NH 03755-1290

54 -- EXPERIMENTAL STRUCTURAL COMPOSITE MATS FOR USE IN SOIL STABILIZATION TESTING POC Contact Christine Martinson, (603)646-4244 / Contracting Officer, Charles P. Zdunczyk, (603)646-4324 E-MAIL: Click here to e-mail the buyer, chrism@crrel.usace.army.mil. U. S. Army Cold Regions Research and Engineering Laboratory seeks to identify sources capable of manufacturing structural composite mats for use in soil stabilization testing. These 12' x 4' mats will be joined for the purpose of creating temporary roadway surfaces. Two separate configurations will be needed, Mat A and Mat B. Mats will be evaluated according to 13 variables which have been grouped in descending order of importance. Group 1: Weight, Strength, Stiffness, and Wearing Surface. Group 2: Wearing Surface Abrasion Resistance; Edge Connectors; Panel Size; Expected Life Span; and Operating Temperature Range. Group 3: Construction; Snow Removal; Snow Control; and Crushing Resistance. Desired specifications for Mat A as follows: Weight, Less than 7 lbs per square foot; Strength, Will support a 10,000 lb wheel load (10 in by 10 in., 100 psi tire pressure) in the center of a 3 ft clear span independent of mat orientation; Stiffness, Maximum deflection of 0.5 in. with 10,000 lb load applied at the center of a 3 ft span; Wearing Surface (one side only). Non-slip surface (both wet and dry) such as polymer concrete; Wearing Surface Abrasion Resistance, Wearing surface can withstand 100 M1 tank pivot turns and 10,000 vehicle passes; Edge Connectors, Edge connectors are required to transfer load between panels and hold them together; Panel Size, 12 ft by 4 ft, depth must be less than 4 in.; Expected Life Span, The panels should be expected to last 10 years when left exposed to the weather and sun, no materials will decay if exposed to moisture for extended lengths of time; Operating Temperature Range, -40 to 60 C; Construction, Composite; Snow Removal, Not damaged by snow removal operations; Snow Control, Not damaged by conventional de-icing chemicals; Crushing Resistance, Crushing strength is greater than 50,000 lbs on a 40 sq. in. area (1250 psi). Desired specifications for Mat B is same as Mat A except for the following: Weight, Less than 8 lbs per square foot; Strength, Will support a 10,000 lb wheel load (10 in by 10 in., 100 psi tire pressure) in the center of a 6 ft clear span independent of mat orientation; Stiffness, Maximum deflection of 0.75 in. with 10,000 lb load applied at the center of a 6 ft span; Panel Size, 12 ft by 4 ft, depth must be less than 5 in. Contractors are requested to identify their interest and provide a statement regarding their ability to meet the desired specifications not later than 10 June 1997. (0142)

Loren Data Corp. http://www.ld.com (SYN# 0225 19970528\54-0002.SOL)