A kind of mud suitable for underground diaphragm wall construction
Active Publication Date: 2021-07-09
SINOHYDRO BUREAU 8 CO LTD
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Problems solved by technology
[0004] The content of sodium carboxymethyl cellulose (CMC) required in the proportion of ordinary mud is large, and the cost of mud preparation is relatively high
When constructing an underground diaphragm wall in a weak soil layer, it is difficult for ordinary mud to act as a retaining wall, and the groove wall is easily collapsed during the groove formation process
Concrete pouring after the collapsed hole will cause excessive consumption of concrete, greatly increase the project cost, and seriously affect the overall stability of the underground diaphragm wall
When the collapse hole is serious, it will cause the road surface around the wall to collapse, and the adjacent buildings and large equipment will be dumped, which will eventually lead to engineering safety and quality accidents
Method used
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Embodiment 1
[0023] The mud suitable for underground diaphragm wall construction in this embodiment, by weight, its preparation raw materials include: water: 90.60%, sodium bentonite: 9.13%, soda ash: 0.24%, sodium carboxymethylcellulose (CMC): 0.03 %.
[0024] In the present embodiment, the content of montmorillonite in sodium bentonite is 50%, and Na in soda 2 CO 3 The content is 99%, the acid-viscosity ratio of sodium carboxymethylcellulose is 0.8, and the salt-viscosity ratio is 1.0.
Embodiment 2
[0026] The mud that is applicable to underground diaphragm wall construction of the present embodiment, by weight, its preparation raw material comprises: water: 89.73%, sodium bentonite: 9.87%, soda ash: 0.38%, sodium carboxymethyl cellulose (CMC): 0.02 %.
[0027] In the present embodiment, the content of montmorillonite in sodium bentonite is 60%, and Na in soda ash 2 CO 3 The content is 99%, the acid-viscosity ratio of sodium carboxymethylcellulose is 0.9, and the salt-viscosity ratio is 1.0.
Embodiment 3
[0029] The mud that is applicable to underground diaphragm wall construction of the present embodiment, by weight, its preparation raw material comprises: water: 89.98%, sodium bentonite: 9.63%, soda ash: 0.35%, sodium carboxymethyl cellulose (CMC): 0.04 %.
[0030] In the present embodiment, the content of montmorillonite in sodium bentonite is 80%, and Na in soda ash 2 CO 3 The content is 99%, the acid-viscosity ratio of sodium carboxymethylcellulose is 0.85, and the salt-viscosity ratio is 1.0.
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Abstract
The invention discloses a mud suitable for the construction of an underground diaphragm wall. The raw materials for preparation include: 9%-11% of sodium bentonite, 2%-5% of soda ash, and 0.01%-0.04% of sodium carboxymethyl cellulose. , the remainder is water. The invention has the advantages of low cost and good mud wall protection effect.
Description
technical field [0001] The invention relates to the technical field of engineering construction, in particular to a mud suitable for underground diaphragm wall construction. Background technique [0002] The continuous wall with anti-seepage, soil retaining, load-bearing and anti-floating functions formed by digging a narrow and deep foundation groove underground with the help of the groove forming machine and the function of the mud retaining wall, and pouring concrete in the foundation groove is called "Diaphragm Wall". [0003] During the construction of the underground diaphragm wall, the vibration is small, the noise is low, and it has the characteristics of high wall rigidity, fast construction speed and high economic benefit. Therefore, it is widely used in the construction fields of subway, municipal, water conservancy and hydropower, high-speed rail and so on. [0004] The content of sodium carboxymethyl cellulose (CMC) required in the proportion of ordinary mud is...
Claims
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Application Information
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