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Hydraulic fill sand expansion polystyrene mixing light road bank stuffing filling and construction method

A technology of polystyrene particles and lightweight fillers is applied in the field of filling sand-filled expanded polystyrene particles mixed with lightweight embankment fillers. The effect of saving soil resources

Inactive Publication Date: 2008-05-28
SOUTHEAST UNIV
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Problems solved by technology

At present, there is a heat wave of expressway widening construction in China. The technical difficulties encountered in the embankment widening project may be more difficult than the new expressway construction, because there are differences in the consolidation deformation of the new and old foundations in the splicing of the new and old embankments. , such as improper handling will inevitably lead to cracking and instability of the pavement

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  • Hydraulic fill sand expansion polystyrene mixing light road bank stuffing filling and construction method

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Embodiment Construction

[0018] The specific operation is as follows:

[0019] a. Determine the particle gradation curve of dredging sand.

[0020] b. Prepare different dredging sand: EPS particle volume ratios, such as dredging sand: EPS volume ratio = 0.4: 0.6, 0.45: 0.55, 0.5: 0.5, 0.55: 0.45, 0.6: 0.4; then add different proportions of curing The mixing amount of the curing agent is 12%~20% of the weight of the dredging sand, and the compaction test is carried out after mixing with an appropriate amount of water, so as to obtain the maximum dryness of the mixed light materials with different proportions. Density and optimal moisture content.

[0021] c. Prepare samples according to the corresponding optimal water content and maximum dry density in step b, and measure the unconfined compressive strength for 7 days, 14 days and 28 days of curing.

[0022] d. Determine the proportion of mixed lightweight materials according to the strength and density requirements of different road embankment grade...

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Abstract

The invention relates to a filling method of blown sand expansion polystyrene particle mixed light road embankment filling, which is a novel road embankment filling technology, and is an effective method for lightening road embankment load, and is a novel technique for saving earth which is used in construction of high speed road and reducing soft earth ground foundation process, and is a breakthrough of green circulating economic construction and development technique. The main procedures of the technology comprise measuring grain composition curve of blown sand particles, defining two parameters of blow sand EPS mixed light filling with different proportions, namely, the largest dry density and the optimum water content, defining unconfined compressive strength of blow sand EPS mixed light filling with different proportions, allocating and stirring blow sand EPS mixed light filling on site, blow sand EPS mixed light road embankment construction, blow sand EPS mixed light road embankment filling technology, blow sand EPS mixed light road embankment grinding technology, and blow sand EPS mixed light road embankment maintaining.

Description

technical field [0001] In the construction of expressways, it is often necessary to requisition farmland and use high-quality clay for embankment filling. Such embankments themselves have a relatively large load, and foundation reinforcement is also required. The invention is a manually configured mixed lightweight embankment filler, which can save land and lighten the load of the embankment, thereby reducing the cost of foundation reinforcement treatment for expressway engineering. Utilizing this technology can better protect cultivated land, save engineering investment and have good sustainable development characteristics. Background technique [0002] In the construction of expressways, a large amount of clay is used as embankment filling material, so a lot of farmland needs to be requisitioned, and land resources are very scarce in the economically developed eastern regions. This extensive construction mode will undoubtedly be subject to certain restrictions. In additio...

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Application Information

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IPC IPC(8): E01C7/36
Inventor 缪林昌钟建池冯兆祥吉林林飞夏国星陈策王菲张继周吕伟华
Owner SOUTHEAST UNIV
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