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Self-compaction mortar and deep hole curtain pouring construction method

A construction method and self-compacting technology, which is applied in water conservancy projects, sea area projects, infrastructure projects, etc., can solve problems such as the lack of suitable self-compacting mortar, and achieve construction quality and stability, which are easy to guarantee, and have obvious benefits in energy saving and emission reduction. highly operable effect

Active Publication Date: 2012-06-20
中国水利水电第七工程局成都水电建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Self-compacting mortar is an excellent grouting material, but there is no suitable self-compacting mortar and its construction method for deep hole curtain grouting construction, especially for deep hole curtain grouting with different cracks

Method used

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  • Self-compaction mortar and deep hole curtain pouring construction method
  • Self-compaction mortar and deep hole curtain pouring construction method
  • Self-compaction mortar and deep hole curtain pouring construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Self-compacting mortar preparation: prepared according to different self-compacting mortar ratio requirements, the self-compacting mortar production process includes: (1) Preparations before production: ① Select the self-compacting mortar ratio and prepare corresponding raw materials; ② Before the production of self-compacting mortar, the raw materials should be tested to understand the moisture content and fineness modulus of the sand. ③ Make sure that the water in the transport tanker has been drained, and pay attention to stirring during transportation. (2) Matters needing attention in the production process: ① The mixing sequence of the self-compacting mortar is: put the weighed sand and cementitious materials into the mixer for dry mixing, and the dry mixing time of the mixer should not be less than 10 seconds, then add water and admixture Then continue to stir for more than 60 seconds. When the temperature is lower than 15°C, the stirring time should not be less t...

Embodiment 2

[0057] Carry out self-compacting mortar deep hole curtain grouting construction according to the following steps:

[0058] a. Construction preparation: including erection of construction bent structures, layout of wind and water power systems, layout of sewage system, layout of grouting pipelines, etc. Including accurate hole stakeout according to curtain grouting hole position parameters; hole stakeout can be arranged in two ways, such as figure 2 As shown, first, the row spacing of the door closing holes is 3.0m, and the hole spacing is 0.75m; the middle curtain hole has double rows, the row spacing is 1.0m, and the hole spacing is 1.5m; Hole spacing 1.0m; figure 1 As shown, another arrangement is that the row spacing of the door closing holes is 3.0m, and the hole spacing is 0.75m; the middle curtain hole is single row, and the hole spacing is 1.5m; 1.5m.

[0059] b. Drilling construction: advanced concentric drilling is adopted, drilling in sections from top to bottom,...

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Abstract

The invention discloses a self-compaction mortar and a deep hole curtain pouring construction method. The deep hole curtain pouring construction method comprises the following steps of: preparing for construction, drilling a hole, detecting the drilled hole, pouring, finishing pouring, checking the pouring effect and sealing the drilled hole. The self-compaction mortar utilized in the construction comprises the following components in parts by weight: 0.52-0.94 parts of water, 1 part of cement, 0-0.55 parts of fly ash, 2.83-4.89 parts of sand, and 0.01-0.03 parts of admixture, wherein the admixture consists of 1 part of melamine, 0.2-0.6 parts of polyacrylamide anti-washout admixture, 0.1-0.5 parts of UWB-II type anti-washout admixture and 0.05-0.15 parts of flocculating agent. The self-compaction mortar and the deep hole curtain pouring construction method disclosed by the invention are suitable for different geological conditions; the self-compaction mortar is low in cement content and small in hydration temperature rise; a temperature control measure can be simplified and even omitted; gaps of crushed zones can be fully filled without vibrating the mortar; diffusivity of 600mm does not cause segregation and exudation; and in addition, the deep hole curtain pouring construction method has the advantages of simple and effective construction management, constant standard, strong operability, reduced human intervention, and more easily ensured construction quality and stability.

Description

technical field [0001] The invention belongs to the field of building anti-leakage construction methods, in particular to the field of deep-hole curtain anti-leakage grouting construction methods, in particular to the construction technology of deep-hole curtain grouting using self-compacting mortar and self-compacting mortar combination Background technique [0002] In existing large-scale building construction, anti-seepage construction is an important construction content. Curtain anti-leakage grouting is a commonly used method. Curtain anti-leakage grouting construction generally includes pure cement slurry static pressure grouting, double-liquid grouting, cement paste, and ordinary mortar. [0003] Static pressure grouting: Generally, static pressure grouting is carried out in strata with serious crack development, that is, the crack width of the stratum is large, the stratum is relatively broken, and there is dynamic water. The control of static pressure grouting is po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/18E02B3/16C04B28/00
Inventor 田彬蔡海燕聂美平赵毅贺小平李东福代平
Owner 中国水利水电第七工程局成都水电建设工程有限公司
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