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A kind of permafrost and silt consolidation material

A technology of consolidating materials and permafrost, applied in the field of building cementitious materials, can solve problems such as threats to the safety and service life of the building, difficult governance, and heavy maintenance work

Inactive Publication Date: 2015-10-28
大连铭源全建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional materials and winter application techniques cannot fully meet the construction requirements in severe cold areas, such as the Yalin Line, Nenlin Line, and Nanwei Line, etc. Due to the severe cold climate in permafrost and southern tunnels, cracks and cracks commonly occur in the tunnels. Tunnel diseases such as fragmentation, peeling, ice hanging, water leakage, water accumulation, and icing seriously threaten the safety and service life of the tunnel. The maintenance work is heavy and the treatment is very difficult.

Method used

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  • A kind of permafrost and silt consolidation material

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Embodiment 1

[0011] Embodiment 1 A kind of permafrost and silt consolidation material, with C 3 S-C 2 S- -CaO is the main mineral clinker, gypsum, and industrial tailings are ground together to make a cementitious material masterbatch, and then 8% quicklime powder is added to make it.

[0012] Masterbatch preparation method: C 3 S-C 2 S- -CaO is the main mineral clinker 30%, gypsum 15% and industrial tailings 55%.

[0013] C 3 S-C 2 S- -CaO is the main mineral clinker preparation method is: CaO-SiO 2- al 2 o 3 -Fe 2 o 3 -SO 3 In the cement raw meal of the five-component system, CaO is introduced in excess, and the content of excess calcium oxide is between b-CaO=5-8%, and the alkalinity coefficient Km=1.0-1.3 is controlled within the range of 1200°C-1300°C The clinker is calcined at the sintering temperature.

Embodiment 2

[0014] Embodiment 2 A kind of permafrost and silt consolidation material, with C 3 S-C 2 S- -CaO is the main mineral clinker, gypsum, and industrial tailings are ground together to make a cementitious material masterbatch, and then 15% of quicklime powder is added to make it.

[0015] The preparation method of masterbatch: add CAS clinker and OPC clinker to mix, and the ratio is: C 3 S-C 2 S- -CaO is the main mineral clinker 10%, CAS clinker 15%, OPC clinker 5%, gypsum 15% and industrial tailings 65%.

[0016] C 3 S-C 2 S- -CaO is the main mineral clinker preparation method is: CaO-SiO 2- al 2 o 3 -Fe 2 o 3 -SO 3 In the cement raw meal of the five-component system, CaO is introduced in excess, and the content of excess calcium oxide is between b-CaO=5-8%, and the alkalinity coefficient Km=1.0-1.3 is controlled within the range of 1200°C-1300°C The clinker is calcined at the sintering temperature.

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Abstract

The invention discloses a concretionary material for even frozen soil and sludge. The concretionary material is prepared by following steps: a gel master batch is prepared by grinding C3S-C2S-C4A3S<^>-CaO main mineral clinker, gypsum and industrial mine tailing together; and then 8 to 15% of quicklime powder is added. The C3S-C2S-C4A3S<^>-CaO main mineral clinker is prepared by adding excess CaO into CaO-SiO2-Al2O3-Fe2O3-SO3 pentabasic cement raw batch, wherein the content of the excess calcium oxide b-CaO is between 5 to 8%, basicity coefficient Km is between 1.0 to 1.3, and the mineral clinker is prepared by calcining under 1200 to 1300 DEG C. Stability of the concretionary material for even frozen soil and sludge is seldom influenced by water immersion, so that the concretionary material is especially suitable for engineering construction such as roadbed, riverbed and mountain trail.

Description

technical field [0001] The invention relates to a construction cementitious material, in particular to a permafrost and silt consolidation material. Background technique [0002] The traditional winter spraying technology usually uses OPC cement plus antifreeze, air-entraining agent, accelerator, etc. to reduce the liquid freezing point temperature, shorten the setting time, improve frost resistance and obtain early strength, but in the case of ultra-low temperature of -30℃ Under normal circumstances, due to the slow hydration and hardening of ordinary cement, the ability to resist ultra-low temperature freezing damage is extremely poor, and a large amount of antifreeze air-entraining agent must be added to prevent freezing without strengthening, fast setting but not fast hardening, concrete bubbles, and poor seepage resistance. Strength and durability are greatly reduced. Tunnel diseases such as cracking, brittleness, peeling, water leakage, leakage, icing, and humidity of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/14
CPCY02P40/143Y02P40/10
Inventor 宫振鑫
Owner 大连铭源全建材有限公司
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