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Preparation method for high-strength bamboo structural material suitable for construction and bridgework structures

A technology of bridge engineering and structural materials, applied in the field of building materials and building structures, can solve problems that cannot meet the requirements of physical and mechanical properties, discreteness, layer geometry, interface property design and control, etc.

Inactive Publication Date: 2013-10-23
NANJING FORESTRY UNIV
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Problems solved by technology

However, due to the lack of design and control of material components, layer geometry, and interface properties during the processing of this material, the mechanical properties of the material are very random and discrete, which cannot meet the requirements of modern bamboo structures. Requirements for physical and mechanical properties

Method used

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  • Preparation method for high-strength bamboo structural material suitable for construction and bridgework structures
  • Preparation method for high-strength bamboo structural material suitable for construction and bridgework structures
  • Preparation method for high-strength bamboo structural material suitable for construction and bridgework structures

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Embodiment Construction

[0042] The preparation method of high-strength bamboo structure material,

[0043] 1. The felled adult bamboo is degreened and yellowed mechanically, and dried in a steam oven at a constant temperature so that the moisture content is about 10%.

[0044]2. Randomly select not less than 3% of each batch of raw materials, and the total number of bamboos is not less than 60 to make a test block of 15mm×15mm×4mm, put the test block into a beaker with an appropriate amount of water, and place it in DK -In the S24 type electric heating constant temperature water bath, cook continuously at a temperature of 100°C for 24 hours for softening treatment, then dry in the air, and make slices with a sliding microtome. The microscopic image of the test piece was taken by an electron microscope, and the microscopic structure was studied by image processing technology, and the volume ratio of the vascular bundles of the original bamboo was obtained r f and spatial distribution.

[0045] 3. Ac...

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Abstract

The invention relates to a preparation method for a high-strength bamboo structural material suitable for construction and bridgework structures, which includes the following processing steps: 1 preprocessing bamboo which is grown up and cut down, 2 processing images, 3 manufacturing bamboo standard test pieces, 4 establishing raw bamboo micromechanical models by applying the composite material mixing principle, 5 determining specific values of ft and fm, 6 grading the bamboo based on vascular bundle volume ratio, 7 designing material components and layer spread geometry, 8 determining a gum dipping mode and material forming pressure, 9 assembling, gum dipping, and hot-forming, 10 inspecting products, and 11 determining parametric measurement methods for the high-strength bamboo engineering material. The preparation method for the high-strength bamboo structural material has the advantages of being capable of achieving controllability and designability of the bamboo engineering material and capable of producing the high-strength bamboo engineering structural material meeting requirements for architectural structure target mechanical properties and having certain specifications, developing environment-friendly and reproducible constructional engineering materials, and relieving pressure on the environment and resources.

Description

technical field [0001] The invention relates to a preparation method of a high-strength bamboo structural material suitable for building and bridge engineering structures, and belongs to the technical fields of building structures and building materials. Background technique [0002] The total building area of ​​houses under construction in my country is nearly 2 billion square meters every year 2 , consumption of nearly 1.4 billion tons of cement and nearly 600 million tons of steel. Large-scale construction consumes a lot of resources and energy, and the damage to the environment and ecology is immeasurable. Therefore, using renewable green building materials to replace high-pollution, high-energy-consuming, non-renewable mineral building materials is an important issue to be solved in the world today. [0003] Bamboo is a renewable and degradable natural biomass material, which can be made into a material in 3-5 years. Its specific strength and specific stiffness are hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M1/02G01N1/28G01N23/00G01N3/32G01N3/20
Inventor 周爱萍黄东升李海涛苏毅张齐生
Owner NANJING FORESTRY UNIV
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