详情

原文传递 BOND CHARACTERISTICS OF OVERLAYS PLACED OVER BRIDGE DECKS SEALED WITH HIGH-MOLECULAR-WEIGHT METHACRYLATE.

题名：	BOND CHARACTERISTICS OF OVERLAYS PLACED OVER BRIDGE DECKS SEALED WITH HIGH-MOLECULAR-WEIGHT METHACRYLATE.
作者：	Shahrooz-BM; Gillum-AJ; Cole-J; Turer-A
关键词：	Bond-strength-Materials; Bridge-decks; Concrete-overlays; High-molecular-weight-methacrylate; Methyl-methacrylate; Sand-; Sand-blasting; Seal-coats; Spreading-; Surface-preparation
摘要：	The bond strength between portland cement overlays and bridge decks treated with high-molecular-weight methacrylate sealers is examined. The data universally suggest that sealers reduce the available bond strength. However, extra surface preparation techniques, such as light sandblasting of the sealed surface or broadcasting sand over the surface immediately after sealing [at approximately 1 kg/sq m (20 lb/100 sq ft)], restore the strengths to 80% or 85%, respectively, of the unsealed surface. Service-level fatigue testing and loading well beyond the serviceability limit state do not adversely affect the bond strength so long as the sealed surface is treated before the application of the overlay. Therefore, to seal the existing cracks, bridge decks may be sealed if either of the recommended secondary surface preparation techniques is followed.
总页数：	Transportation Research Record. 2000. (1697) pp24-30 (10 Fig., 4 Tab., 4 Ref.)
报告类型：	科技报告