A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FROST HEAVE CONTROL ROAD-BED MATERIAL AND FROST HEAVE CONTROL ROAD-BED FORMING METHOD
To provide a road-bed material capable of more surely controlling generation of frost heave.SOLUTION: This frost heave control road-bed material contains water granulated slag with a 0.15 mm sieve passage rate of 3.8% or less, silicon dioxide, aluminum oxide, calcium oxide, and magnesium oxide, and when solidified by spreading and sprinkling water, the freezing expansion rate is suppressed to 0.5% or less. Here, it is also preferable that the water granulated slag have a coarse particle ratio of 3.1 or more, and that the water granulated slag have a fine particle content of 2.9% or less. Furthermore, as a preferred embodiment, the water granulated slag has a 0.15 mm sieve passage rate of 3.0% or less, and the freeze expansion rate is preferably suppressed to less than 0.3% when it is spread and sprinkled with water to solidify. In this preferred embodiment, it is also preferable that the water granulated slag has a coarse particle ratio of 3.2 or more, and that the water granulated slag has a fine particle content of 2.3% or less.SELECTED DRAWING: Figure 7
【課題】凍上の発生をより確実に抑制することが可能な路盤材を提供する。【解決手段】本凍上抑制路盤材は、0.15ｍｍのふるい通過率が3.8％以下である水砕スラグと、二酸化ケイ素、酸化アルミニウム、酸化カルシウム、及び酸化マグネシウムとを含み、敷き均し散水して固化させた際の凍結膨張率が0.5％以下に抑えられることを特徴とする。ここで水砕スラグの粗粒率は3.1以上であることも好ましく、水砕スラグの細粒分含有率は2.9％以下であることも好ましい。さらに、好適な一実施形態として、水砕スラグは0.15ｍｍのふるい通過率が3.0％以下であって、敷き均し散水して固化させた際の凍結膨張率が0.3％未満に抑えられることも好ましい。またこの好適な実施形態において、水砕スラグの粗粒率は3.2以上であることも好ましく、水砕スラグの細粒分含有率は2.3％以下であることも好ましい。【選択図】図７
FROST HEAVE CONTROL ROAD-BED MATERIAL AND FROST HEAVE CONTROL ROAD-BED FORMING METHOD
To provide a road-bed material capable of more surely controlling generation of frost heave.SOLUTION: This frost heave control road-bed material contains water granulated slag with a 0.15 mm sieve passage rate of 3.8% or less, silicon dioxide, aluminum oxide, calcium oxide, and magnesium oxide, and when solidified by spreading and sprinkling water, the freezing expansion rate is suppressed to 0.5% or less. Here, it is also preferable that the water granulated slag have a coarse particle ratio of 3.1 or more, and that the water granulated slag have a fine particle content of 2.9% or less. Furthermore, as a preferred embodiment, the water granulated slag has a 0.15 mm sieve passage rate of 3.0% or less, and the freeze expansion rate is preferably suppressed to less than 0.3% when it is spread and sprinkled with water to solidify. In this preferred embodiment, it is also preferable that the water granulated slag has a coarse particle ratio of 3.2 or more, and that the water granulated slag has a fine particle content of 2.3% or less.SELECTED DRAWING: Figure 7
【課題】凍上の発生をより確実に抑制することが可能な路盤材を提供する。【解決手段】本凍上抑制路盤材は、0.15ｍｍのふるい通過率が3.8％以下である水砕スラグと、二酸化ケイ素、酸化アルミニウム、酸化カルシウム、及び酸化マグネシウムとを含み、敷き均し散水して固化させた際の凍結膨張率が0.5％以下に抑えられることを特徴とする。ここで水砕スラグの粗粒率は3.1以上であることも好ましく、水砕スラグの細粒分含有率は2.9％以下であることも好ましい。さらに、好適な一実施形態として、水砕スラグは0.15ｍｍのふるい通過率が3.0％以下であって、敷き均し散水して固化させた際の凍結膨張率が0.3％未満に抑えられることも好ましい。またこの好適な実施形態において、水砕スラグの粗粒率は3.2以上であることも好ましく、水砕スラグの細粒分含有率は2.3％以下であることも好ましい。【選択図】図７
FROST HEAVE CONTROL ROAD-BED MATERIAL AND FROST HEAVE CONTROL ROAD-BED FORMING METHOD
凍上抑制路盤材及び凍上抑制路盤形成方法
ONISHI NORIAKI (author) / HIROSE YUTAKA (author) / TSUKUDA TAKAARI (author)
2023-04-11
Patent
Electronic Resource
Japanese
IPC:
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
C04B
Kalk
,
LIME
/
E01B
PERMANENT WAY
,
Gleisoberbau
/
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
| Engineering Index Backfile | 1965
Frost heave theories and design measures against frost heave
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FROST HEAVE PREVENTION SYSTEM AND FROST HEAVE PREVENTION METHOD
| European Patent Office | 2022
Differential Frost Heave at Pipeline-Road Crossings
| ASCE | 2009
Lightweight Aggregate Road Sub-base for Frost Heave Control
| British Library Conference Proceedings | 1994