Raw soil building material modification method and method for preparation of building block by use of modified raw soil

A technology of building materials and raw soil, applied in the field of building materials, can solve the problems of slow formation of solidified body strength, poor volume stability, unfavorable recycling and reuse, etc., to achieve cheap and easy to obtain, improved performance, and increased flexural strength Effect

Inactive Publication Date: 2015-03-11
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its disadvantages are high cost, slow formation of solidified strength, and low strength. In an environment with large changes in dryness and humidity, its volume stability gradually deteriorates, severe cracking occurs, and even strength is lost; and some acids and salts The use of waste is not conducive to the recycling and reuse of soil

Method used

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  • Raw soil building material modification method and method for preparation of building block by use of modified raw soil
  • Raw soil building material modification method and method for preparation of building block by use of modified raw soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 254.0g of cement, 136.7g of lime, 17.3g of calcium chloride and 6g of polypropylene fiber modifier into 2550g of raw soil and stir for 1min, then dissolve 36g of water glass in 600g of aqueous solution, then pour it into a stirring pot, and stir 2 minutes to make it uniform; put the uniformly stirred raw soil modified powder into the required mold, press it with a pressure of 6 MPa, and put it into the indoor natural curing for 28 days after demoulding.

Embodiment 2

[0034] Add 260.0g of cement, 130.0g of lime, 22.5g of calcium chloride and 6g of polypropylene fiber modifier into 2550g of raw soil and stir for 1min, then dissolve 31.5g of water glass in 600g of aqueous solution, and then pour it into a stirring pot. Stir for 2 minutes to make it uniform; put the uniformly stirred raw soil modified powder into the required mold, press it with a pressure of 6MPa, and put it in the room for natural curing after demoulding for 28 days before use, that is, the raw soil block with improved properties is obtained.

Embodiment 3

[0036] Add 260.5g of cement, 130.2g of lime, 17.3g of calcium chloride and 6g of polypropylene fiber modifier into 2550g of raw soil and stir for 1min, then dissolve 36g of water glass in 600g of aqueous solution, then pour it into a stirring pot, and stir 2 minutes to make it uniform; put the uniformly stirred raw soil powder into the required mold, press it with a pressure of 6Mpa, and put it in the indoor natural curing for 28 days after demoulding.

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Abstract

The invention discloses a raw soil building material modification method, belongs to the technical field of building materials, solves the technical problem that traditional raw soil building materials have low strength, high brittleness, poor resistance to water, and the like, first the performance of a raw soil material is improved by a chemical modification agent, a modified raw soil building block is prepared by physical pressure moulding technology, the performance of the raw soil material is improved significantly, especially aiming at vast raw soil resources in urgent need of development and utilization in Northern Shaanxi area, the method can largely use local raw soil materials, is convenient in material taking, economical and practical, strong in integrity, excellent in thermal processing property, simple in operation, easy in implementation and popularization, and to be more important, in line with the requirements of green building, and broad in application prospect.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for modifying raw soil building materials and a method for preparing blocks by utilizing the modified raw soil. Background technique [0002] As a building material, raw soil is natural, healthy, environmentally friendly, and economical. It is a very cost-effective building material. People often use it by compacting or directly forming adobe. Raw earth buildings save energy, are low in cost, easy to construct, warm in winter and cool in summer, healthy and comfortable. However, the defects of raw earth materials such as low strength, water resistance, water softening, and reduced strength limit the use of raw earth buildings and seriously threaten the service life of raw earth buildings. Therefore, how to modify raw soil materials, enhance the mechanical properties, water resistance and durability of raw soil materials, and improve the service li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B22/14C04B22/06C04B16/06
Inventor 胡延燕何廷树刘斌何娟白钰穆钧周铁钢周庆华
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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