Clay solidification intensifier for express highway pavement foundation and uses thereof

A technology for pavement bases and expressways, which is applied to roads, roads, and solid waste management. It can solve the problems of raising road construction costs, increasing spoil sites, and long construction periods, so as to achieve rich crustal raw materials, reduce construction costs, and The effect of speeding up the construction progress

Inactive Publication Date: 2007-09-26
刘文伟 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction materials of the water stabilization layer are ordinary cement, crushed stone and stone chips, and the crushed stone and stone chips depend on the nearby quarry, but there is a shortage of stone materials in some sections along the expressway, and the rocks are broken and transported to the expressway for long distance construction On site, its production and transportation costs are high, and the transportation often causes mutual interference between traffic and construction, which easily leads to a long construction period and an increase in the unit cost of road projects
At the same time, when filling and cutting unbalanced sections, earth and rock spoils must be processed, which not only increases the spoil site, but also increases the cost of excavation and transportation, which further increases the cost of road construction
Moreover, quarrying and crushing operations destroy the ecological environment along the expressway

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Take by weighing 45kg of amorphous silicon powder, 22kg of cement expansion agent, 12kg of alum, 5kg of sodium hydroxide, 6kg of gypsum, and 10kg of quicklime, mix at ambient temperature 20°C, and be mixed with mother powder 100kg;

[0013] (2) Weigh 900 kg of No. 32.5 Portland cement, mix it with the mother powder prepared in step (1) to form a clay solidification reinforcing agent, pack it in a sealed package, and store it in a dry environment.

[0014] Clay-based composite material preparation for expressway pavement base:

[0015] At the construction site of the simulated highway pavement base: use 100kg of the clay solidification enhancer of this embodiment, mix it with 900kg of fresh clay, add 120kg of water, stir evenly, form it by rolling, and maintain it at ambient temperature for 7 days. Soaked in water at room temperature for 7 days, its compressive strength was tested to be 3.0MPa, which meets the requirements of the highway pavement base.

Embodiment 2

[0017] (1) Take by weighing 50kg of silica fume, 20kg of cement expansion agent, 10kg of alum, 5kg of sodium hydroxide, 5kg of gypsum, and 10kg of slaked lime, mix them at an ambient temperature of 40°C, and mix them into mother powder 100kg;

[0018] (2) Weigh 600 kg of No. 32.5 Portland cement, mix it with the mother powder prepared in step (1) to form a clay solidification reinforcing agent, seal it in a package, and store it in a dry environment.

[0019] Clay-based composite material preparation for expressway pavement base:

[0020] In the construction site of the simulated highway pavement base: use 120kg of the clay solidification reinforcing agent of this embodiment, mix it with 880kg of fresh clay containing 20% ​​of sand grains, add 180kg of water, mix it evenly, form it by rolling, and maintain it at ambient temperature After 7 days, samples were taken and soaked in water at room temperature for 7 days, and its compressive strength was tested to be 3.9MPa, which me...

Embodiment 3

[0022] (1) Take by weighing 40kg of rice husk ash, 25kg of cement expansion agent, 10kg of alum, 5kg of sodium hydroxide, 5kg of gypsum, and 15kg of slaked lime, mix at an ambient temperature of 5°C, and prepare 100kg of parent powder;

[0023] (2) Weigh 400 kg of No. 42.5 Portland cement, mix it with the mother powder prepared in step (1) to form a clay solidification reinforcing agent, pack it in a sealed package, and store it in a dry environment.

[0024] Clay-based composite material preparation for expressway pavement base:

[0025] At the construction site of the simulated expressway pavement base: use 200kg of the clay solidification reinforcing agent of this embodiment, mix it with 800kg of fresh clay containing 20% ​​of sand, add 200kg of water, mix it evenly, form it by rolling, and maintain it at ambient temperature After 7 days, samples were taken and soaked in water at room temperature for 7 days, and its compressive strength was tested to be 5.2MPa, which met th...

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Abstract

The invention discloses a clay solidifying and reinforcing agent used to highway paving basal layer and its application, which comprises the following steps: allocating the mother powder with component and mass ratio at 10-50 amorphous silica powder (active silica powder), 5-40 cement plumping agent, 5-35 alum, 5-45 burnt lime or burned lime, 0-20 caustic soda or caustic potash, 0-20 calcium sulfate, 0-5 cement hardener and 0-2 cement set retarder; mixing mother powder and silicate cement with mass ratio at 10-50:90-50; getting the product; blending clay solidifying and reinforcing agent and clay or clay with sand rock according to intended mass ratio; adding 10-30% water; stirring evenly; rolling; shaping; protecting 7-14 days under normal temperature; becoming clay composite material of highway paving basal layer.

Description

technical field [0001] The invention relates to a clay curing reinforcing agent for expressway pavement base and application thereof. Background technique [0002] The pavement base of expressways, the traditional structure includes: lime industrial waste slag stabilized soil, cement stabilized soil, graded gravel, etc. In recent years, cement stabilized gravel layer, commonly known as water stabilized layer, is commonly used. The cement dosage ratio of the gelling solidifying agent used as the water stabilization layer is 4-6% (volume ratio), and the crushed stones used must be graded. As far as the stress of the base is concerned, according to the requirements of JTJ034-2000 "Technical Specifications for Construction of Highway Pavement Base", the unconfined compressive strength of the pavement base mixture of expressways and first-class highways soaked for 7 days must reach 3-5MPa. The construction materials of the water stabilization layer are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/08C04B22/06C04B22/02E01C3/00C04B103/12C04B103/14
CPCC04B2111/0075C04B2111/00017C04B28/04Y02W30/91C04B18/146C04B22/008C04B22/062C04B22/064C04B22/143C04B22/148C04B40/0028C04B2103/14C04B2103/22
Inventor 刘文伟石宗利朱桂华
Owner 刘文伟
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