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Composite high performance soil cement mortar pile construction method

A construction method and cement-soil technology, applied in sheet pile walls, climate sustainability, infrastructure engineering, etc., can solve the problem of high cost, and achieve the effect of improving early strength and impermeability, and improving strength and impermeability.

Inactive Publication Date: 2009-11-18
宋琼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The improvement of the strength of cement soil depends on the strength of cement, the amount of cement and the performance of external admixtures. It has better uniformity and higher strength than traditional cement soil (such as powder spray piles, slurry spray piles, and high-pressure rotary spray piles), but its disadvantages lies in the higher cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: The method described in this embodiment consists of the following steps: 1) using long spiral equipment, immersed tube equipment or rotary digging equipment to form holes or adopt continuous wall equipment to form grooves; 2) stirring outside the holes to form composite high-performance cement 3) Inject or press the above-mentioned composite high-performance cement-soil mortar into the above-mentioned holes or grooves with a grouting pump. The composite high-performance cement-soil mortar includes curing agents such as mud and cement, sand and external admixtures and the like. per m 3 Mix 150-1000kg of sand and 150-400kg of cement into the mud. The sand is medium coarse sand, silty fine sand or fine sand. Due to the increase of aggregate, on the basis of not increasing the amount of cement, the strength of composite high-performance cement-soil mortar piles can be increased by 5% to 30% compared with cement-soil according to the different amounts of ceme...

Embodiment 2

[0020] Embodiment 2: The method of this embodiment is basically the same as that of Embodiment 1, except that sand and gypsum are mixed into the composite high-performance cement-soil mortar simultaneously, such as every m 3 Mix 150-1000kg of sand, 150-400kg of cement, and 5%-50% of the weight of gypsum in the mud. The strength of the composite high-performance cement-soil mortar pile can be increased by 5%-30% compared with the cement-soil (strength is 1.5-7MPa), while the cost is reduced.

Embodiment 3

[0021] Embodiment 3: The method of this embodiment is basically the same as that of Embodiment 1, except that sand and fly ash are mixed into the composite high-performance cement-soil mortar at the same time, such as every m 3 Mix 150-1000kg of sand, 150-400kg of cement, and 5%-50% of the weight of fly ash into the mud. According to the different amounts of cement, external admixture and sand, the composite high-performance cement Compared with cement soil, the strength of mortar pile can be increased by 5% to 30% (strength is 1.5-7MPa), while the cost is reduced.

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Abstract

The invention relates to a composite high performance soil cement mortar pile construction method, comprising the following steps: 1) adopting a long spiral equipment, a sinking pipe equipment or a rotary drilling equipment to form holes, or adopting a continuous wall equipment to form grooves; 2) mixing outside the hole to form composite high performance soil cement mortar; 3) pouring or pressing the above composite high performance soil cement mortar in the holes or grooves by a grouting pump; the method is characterized in that: the soil cement mortar is composed of slurry, cement and sand, the sand mixed in every cubic meter of slurry is 150-1000 kg, and the cement mixed in every cubic meter of slurry is 150-400 kg. The invention has the advantages that: the strength and impermeability of soil cement can be increased on the condition of low cost and at the same time a novel material--composite high performance soil cement mortar is produced.

Description

technical field [0001] The invention relates to the fields of civil engineering and municipal engineering, in particular to a construction method of a composite high-performance cement-soil mortar pile. Background technique [0002] Traditional cement-soil (such as powder spray pile, slurry spray pile, high-pressure rotary spray pile) is a mixture of undisturbed soil and cement-based curing agent stirred in the hole (underground), and it is impossible to spray granular materials into the ground . Under the same conditions, the improvement of cement-soil strength depends on the strength of cement and the increase of cement content. The disadvantage is that the cost is high, and the mixing of cement-soil in the hole (underground) is uneven, and it is easy to appear "melaleuca cake", " Egg core" is a common quality problem. [0003] Invention patent - construction method of high-performance cement-soil pile (CN1641111) The high-performance cement-soil is a mixture of mud, cur...

Claims

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Application Information

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IPC IPC(8): E02D5/36C04B28/00C04B28/14C04B18/08C04B28/10C04B14/06C04B14/42
CPCY02W30/91
Inventor 宋琼
Owner 宋琼
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