Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO MEBC:2012
• Năm ban hành / Publication date: 2012
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Manual for Emulsion-Based Chip Seals for Pavement Preservation
• Số trang / Page: 54

Phạm vi áp dụng / Scope of standard

Introduction

This manual was developed for use in designing and constructing
chip seals over hot mix asphalt pavements. It documents best
practices based on the findings of research during NCHRP Project
14-17, Manual for Emulsion- Based Chip Seals for Pavement
Preservation. In addition, certain subjective or qualitative
judgments previously needed during chip seal construction have been
eliminated in favor of field and laboratory testing. These include
the moisture content of the seal before traffic can be released,
judging surface condition so emulsion application rate can be
adjusted for surface demand, and measuring the emulsion consistency
in the field. The introduction of these new techniques should
improve the probability of success when designing and constructing
chip seals, but they do not replace the significant judgment
required. Also, the success of any chip seal depends on conformance
to best practices, and variance or elimination of these practices
often leads to disappointing performance.