In accordance with the plan for formulation and revision of water technical standards and the requirements of SL 1-2014 Specification for the Drafiting o f Technical Standards of Water Resources, SL 251-2000 Code for Investigation of Natural Construction Materiats for Water and Hydropower Projects has been revised and adjusted.
This code includes 8 chapters and 4 annexes with the main contents as follows:
-Extent and basic principles for investigation of natural construction materials.
-Requirements of investigation, sampling and testing,and quality indices for various natural construction materials,including sand and gravel materials, soil materials, rock materials, usable materials from excavations, land fillmaterials, hydraulic fill materials and impervious rolled-mudstone materials.
-Processing, analysis and reporting of investigation results of natural construction materials.
-Identification of alkali reactivity potential of concrete aggregate, particle-size classification of soils, discriminating criteria of dispersive soil, and common form of tables for natural construction materials investigation.
目录
Introduction to English Version Foreword 1 General Provisions 2 Terms and Symbol 2.1 Terms 2.2 Symbol 3 Basic Stipulation
4 Investigation of Sand and Gravel Materials 4.1 General Requirement 4.2 Investigation 4.3 Quality Assessment
5 Investigation of Soil Materials 5.1 General Requirement 5.2 Investigation 5.3 Quality Assessment
6 Investigation of Rock Materials 6.1 General Requirement 6.2 Investigation 6.3 Quality Assessment
7 Investigation of Other Materials 7.1 Usable Materials from Project Excavation 7.2 Land Fill Materials 7.3 Hydraulic Fili Materials 7.4 Impervious Rolled - mudstone Materials
8 Data Processing and Reporting 8.1 General Requirement 8.2 Data Processing 8.3 Reporting
Annex A Identification of Alkali Reactivity Potential of Concrete Aggregate Annex B Particle-size Classification of Soil Annex C Discriminating Criteria of Dispersive Soil Annex D Common Form of Tables for Natural Construction Materials Investigation Explanation of Wording
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