GB/T 26745-2021Basalt fiber composites for civil engineering structures (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 26745-2011 "Basalt Fiber Composite Materials for Structural Reinforcement and Repair", and is similar to GB/T 26745-2011 In addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) The standard name was changed to "Basalt fiber composite materials for civil engineering structures";

b) The scope has been changed, and the application of basalt fiber composite materials has been expanded from structural reinforcement and repair to structural reinforcement (see Chapter 1, 2011 Chapter 1 of the Year Edition);

c) The product classification of basalt fiber composite panels and basalt fiber composite ribs has been changed (see 4.1, 2011 edition 4.1);

d) The product specifications of basalt fiber composite plates and basalt fiber composite ribs have been changed (see 4.2, 2011 edition 4.2);

e) The product markings of basalt fiber composite panels and basalt fiber composite ribs have been changed (see 4.3, 2011 edition 4.3);

f) The tensile mechanical properties of the basalt fiber composite board have been changed (see Table 5, Table 5 of the 2011 edition);

g) Modified the tensile mechanical properties of basalt fiber composite bars (see Table 6, Table 6 of the 2011 edition);

h) The creep rupture stress of the basalt fiber composite bar has been added (see 5.5);

i) The requirements for alkali corrosion resistance of basalt fiber reinforced composite materials have been added (see 5.6);

j) The requirements and test methods for creep properties of basalt fiber composite bars have been added (see 6.5 and Appendix B).

1 Scope

This document specifies the classification, specifications and markings, requirements, test methods, and inspection rules of basalt fiber composite materials for civil engineering structures. Then, marking, packaging, transportation and storage.

This document is applicable to basalt fiber composite materials used in civil engineering structural reinforcement and restoration and new structures.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 1463 Fiber-reinforced plastic density and relative density test method

GB/T 3354 Test method for tensile properties of oriented fiber reinforced polymer matrix composites

GB/T 9914.3 Test methods for reinforced products Part 3: Determination of mass per unit area

GB/T 21490-2008 Carbon fiber sheet for structural reinforcement and repair

GB/T 30022 Test method for basic mechanical properties of fiber reinforced composite material bars

GB/T 34551 Test method for high temperature alkali resistance of glass fiber reinforced composite material bars

3 Terms and definitions

The following terms and definitions apply to this document.