WB/T 1012-2012Agricultural big canopy frame of magnesium oxychloride cement composite (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces WB/T 1012-2000 "Magnesite composite agricultural scaffolding." this standard compared with the WB/T 1012-2000, the main changes are as follows.

--- Increased product range of content.

--- In view of the use of high-alkali glass fiber cloth (or wire) production of magnesite composite agricultural scaffolding repeatedly quality accidents, while the state at Nineteen ninties have expressly prohibited the production and use of high-alkali glass fiber cloth (or wire) as a reinforcing material, so this standard Revised, highlighted in the range of columns. In the production of agricultural magnesium alloy composite scaffolding is strictly prohibited the use of high-alkali glass fiber cloth (or Wire) as a product enhancements. 4.5 to cancel the original standard reinforcement provisions of "non-use of high alkali glass fiber cloth (or silk) for the increase Strong material "provisions.

--- The original standard 4.1.1 changed to. light burning magnesium oxide powder should be consistent with WB/T 1019 "magnesite products with light burning magnesium oxide", the original standard 4.1.2 Replaced. Industrial magnesium chloride should be consistent with WB/T 1018 "Magnesia products with industrial magnesium chloride", abolition of the original standard in Appendix A Magnesite Composite materials, agricultural scaffolding raw materials quality standards.

--- The original standard 4.5 Reinforcement provisions in the "non-use of high alkali glass fiber cloth (or wire) for reinforcement" Cancel, in this standard Highlighted in the fence.

This standard proposed by the China Federation of Logistics and Purchasing and centralized.

This standard was drafted. China Magnesite Industry Association, Jinan Jiemei Magnesium Building Materials Institute is responsible for drafting, Beijing Guanqiang Industry and Trade Co., Ltd.

Secretary, Chaohu City, Fu Huang Lightweight Building Materials Co., Ltd. Magnesium Branch.

1 Scope

This standard specifies the classification, requirements, test methods, inspection rules, signs and transport and storage of agrochemical composite agricultural scaffolding.

This standard applies to modified magnesite cement (magnesium oxychloride cement) for the cementitious material to thin bamboo or other non-metallic materials as a reinforcing material Magnesite composite materials made of agricultural scaffolding; for scaffolding spacing of not more than 3m, the span of not more than 10m of magnesite composite materials with a large scaffolding. This standard does not apply to the use of high alkali glass fiber cloth (or wire) as a product enhancements.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 17671 cement mortar strength test method (ISO method) GB/T 19766 natural marble building board JC/T 646 glass magnesium duct WB/T 1018 magnesium chloride industrial magnesium chloride Light burned magnesia for magnesite products

3 Categories

Magnesite composite agricultural scaffolding is divided into single-slope type (winter warm type) and arched round two categories. Schematic diagram shown in Figure 1 to Figure 4. arch Round magnesium composite agricultural scaffolding is generally composed of about two arch splicing.

L1 -- shed span;

L2 -- shed height.

Figure 1 single-slope magnesite composite agricultural scaffolding structure diagram