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Lightweight reinforced mixed soil and preparation method thereof

A lightweight soil and reinforcement technology, applied in the field of civil engineering, can solve the problems of long cycle, high cost of soft foundation treatment, poor effect, etc., and achieve the effect of short construction period, reduced soft foundation treatment cost, and wide application.

Inactive Publication Date: 2007-10-17
ZHEJIANG COLLEGE OF CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high cost, long period and poor effect of the existing soft foundation treatment, the present invention provides a lightweight reinforced mixed lightweight soil with good mechanical properties using natural light materials as raw material soil and its preparation method

Method used

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  • Lightweight reinforced mixed soil and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A total of 100kg of natural light materials, fiber materials, water, and cement, of which the natural light materials are basaltic volcanic rocks of the crater (purchased from Xiamen Sanji Import and Export Co., Ltd.), accounting for 79.40%; the fiber materials are made of polypropylene (PP) (purchased from Qiangli Fiber Manufacturing Co., Ltd., Sheyang County, Jiangsu Province), accounting for 1.35%; the cement adopts commercially available 32.5# ordinary Portland cement, accounting for 10.2%; water accounts for 9.05%. Applied to the subgrade fill of expressways (see Figure 1), under standard conditions of curing, the density after 28 days is 1.18g / cm 3 , The unconfined compressive strength is 465kPa, and the tensile strength is 186kPa.

[0028] Specific method: first process the basaltic volcanic rock in the crater in a pulverizer to obtain particles with a good particle size distribution (particle size 2-5mm, non-uniformity coefficient> 5, curvature 1-3); Fully mix ...

Embodiment 2

[0030] Natural lightweight material, fiber material, water, cement are altogether 100kg, wherein natural light material is chalk (purchased from Guangdong Great Wall Construction Trade Import and Export Co., Ltd.), accounts for 85.89%; Fiber material adopts polyester (purchased from Jiangsu Province Yangxian Qiangli Fiber Manufacturing Co., Ltd., the same below), accounted for 1.68%; the cement was commercially available 32.5# ordinary Portland cement, accounting for 8.4%; water accounted for 4.03%. Step is the same as embodiment 1, is applied to highway bridge head section embankment filling (referring to Fig. 2), maintenance under standard condition, the density after 28 days is 1.03g / cm 3 , The unconfined compressive strength is 391kPa, and the tensile strength is 224kPa.

Embodiment 3

[0032] A total of 100kg of natural light materials, fiber materials, water, and cement, of which natural light materials are coral stone (purchased from Danzhou Changping Trading Co., Ltd.), accounting for 68.4%; fiber materials are made of polyester, accounting for 1.04%; Ordinary Portland cement of 32.5# was purchased, accounting for 18.6%; water accounted for 11.96%. Step is the same as embodiment 1, is applied to the embankment filling of expressway, maintains under standard condition, and the density after 28 days is 1.24g / cm 3 , the unconfined compressive strength is 650kPa, and the tensile strength is 236kPa.

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Abstract

The invention provides a light-weight reinforced mixing light-weight soil and preparation method thereof. The raw material component and weight proportion of the light-weight reinforced mixing light-weight soil as follows: 52-93% natural light material, 0.1-4% fiber material, 4-24% water, 3-20% firming agent; the advantages of the light-weight reinforced mixing light-weight soil are: (1) light weight: density is between 0.5-1.3 g / cm<3>; (2) density can be adjusted at will: changing different natural light material and proportion of every component to adjust density; (3) strength adjustability; (4) strong tensile strength and can be adjusted; (5) convenient operation, well effect: natural light material has stable mechanical property, so prepared light-weight soil has well effect; (6) widely application.

Description

(1) Technical field [0001] The present invention relates to light-weight reinforced mixed light-weight soil with naturally formed light-weight material as raw material soil and its preparation method, which is suitable for road widening, road filling, abutment back filling, underground engineering and pipeline engineering. The filler belongs to the technical field of civil engineering. (2) Background technology [0002] Due to the continuous development of my country's economy, large-scale construction of infrastructure, especially highways, has been carried out. In the soft road section of the highway, problems such as bridge head jumping, high embankment instability, and poor settlement of old and new roadbeds are often encountered. The conventional methods are to solve them by drainage preloading, surcharge, composite foundation, etc., but they cannot effectively solve these problems. problem, and the implementation cost is too high and the construction period is long. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B16/06C04B14/04
CPCC04B28/02
Inventor 杜时贵罗战友
Owner ZHEJIANG COLLEGE OF CONSTR
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