Abstract: A composition comprising: (i) expanded or expandable polystyrene beads or particles (ii) an intumescent, and (iii) a fire-resistant binder the weight of (i) being in the range 20-75% by weight based on the total weight of (i), (ii) and (iii) is disclosed. The fire-resistant binder is an inorganic material chosen from the list comprising metal, silicates, metal aluminates, metal amminosilicates and zeolites preferably an aqueous solution of sodium silicate. A method of preparing a fire-retardant polystyrene is also disclosed.

Abstract: Self-supporting refrigerated truck comprising a floor, two side walls, a front bulkhead and a roof. The components are all constructed as sandwich panels. The connection between the rear axle construction of the refrigerated truck and the front is not provided with longitudinal beams. The function of the chassis is taken over by the side walls, which are capable of absorbing loads because the skin and sandwich panels of the side walls have appreciable strength and a fill of appreciable compressive strength is also provided. In order to transmit forces into the side walls it is proposed to accommodate the vertically extending trusses in the side walls, which trusses are joined to cross-members of the rear axle construction which extend over the entire width.