WO2016141950A1 - Method to build a road - Google Patents
Method to build a road Download PDFInfo
- Publication number
- WO2016141950A1 WO2016141950A1 PCT/EP2015/054708 EP2015054708W WO2016141950A1 WO 2016141950 A1 WO2016141950 A1 WO 2016141950A1 EP 2015054708 W EP2015054708 W EP 2015054708W WO 2016141950 A1 WO2016141950 A1 WO 2016141950A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- concrete
- soil
- thickness
- cement
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
- E01C7/351—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively hydraulical binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively hydraulic binders
Definitions
- the present invention relates to a method to structurally design a pavement based on soil stabilization and roller compacted concrete (RCC). Particularly, the present invention relates to a method to build a stable, durable pavement based on RCC in soils with high groundwater level. Furthermore, the final road has a dynamic load on single wheel between 2.5 kN and 400 kIM.
- Soil stabilization is a technique that combines mechanical, physical and/or chemical methods to improve soil properties to make it suitable for a specific engineering function. Such properties may be, for example, its strength, bearing and resistance to natural and/or man made environments, firmness, compressibility, decrease permeability or volume steadiness. After being stabilized, the soil has a bigger load-carrying capacity and resists better to physical and chemical stress and, consequently, so does the structure that is built.
- the stabilization may occur with the use of admixtures - that act as densifiers and/or waterproof agents -, as well as without, for example, by thermal and electrokinetic methods, vitrification, electroosmosis or by simple preparation of soil-aggregate and further compaction.
- Soil stabilization can be used to steady the ground before a pavement is placed, in the cases when the level of ground water is close to the surface level and/or in places with heavy precipitation levels and/or in soils with high content in clay. Therefore, the soil stabilization technique allows constructions to be built in places where, before its application, it was impossible to construct, due to the intrinsic characteristics of the soil.
- CN 102493308 discloses a bio-enzyme modified roller compacted concrete road engineering construction technology, where the bio-enzyme acts as curing agent, said technology providing good soil stabilization.
- the present invention provides a method to build a road, comprising the steps of:
- the methodology according to the present invention enables to produce a stable, durable Roller Compacted Concrete (RCC) based pavement in a soil with high water level or great clay content. Particularly, it allows for the use of the RCC based on typical zero slump concrete. .
- the final road built according to this method has a dynamic load on single wheel between 2.5 kN for a car and 400 kN for a full overloaded truck, according to EUROCODE 1 and AASHTO.
- the solid stabilization step in the present invention is made by excavating and removing a top layer of the soil and modifying the mechanical and physical properties of the revealed layer by scarifying said layer. Also, a stabilizing agent may be added to the scarified soil. On top of the scarified soil, a layer of sand, gravel, aggregates or a combination of said materials may be added.
- Common equipment for excavating and removing the soil may be used, such as excavators, bulldozers, trailer scrapers, semitrailer scrapers, self-propelled scrapers, graders or autograders.
- Such methods comprise, for example, disc trenching.
- This technique comprises a pair of powered mattock wheels, which go up and down as the machine moves forward.
- Another embodiment is the method of the invention, wherein the concrete layer of step (c) has a thickness equal to the dimension Y.
- Another embodiment is the method of the invention, wherein an asphalt layer X1 with thickness from 1 to 20 cm is placed on top of the concrete layer X2, being X1 plus X2 equal to Y.
- step (b) a further component is added to the material selected from the group consisting of compacted gravel, aggregates and sand or a combination thereof, wherein said further component is selected from the group consisting of water, cement, lime, fly ash, calcium chloride, cement kiln dust, lime kiln dust, sodium silicate, potassium silicate and a polymer or a combination thereof.
- step (b) a further component is added to the material selected from the group consisting of compacted gravel, aggregates and sand or a combination thereof, wherein said further component is selected from the group consisting of water, cement, lime, fly ash, calcium chloride, cement kiln dust, lime kiln dust, sodium silicate, potassium silicate and a polymer or a combination thereof.
- step (b) a further component is added to the material selected from the group consisting of compacted gravel, aggregates and sand or a combination thereof, wherein said further component is selected from the group consisting of water, cement, lime, fly
- Another embodiment is the method of the invention, wherein said polymer is added in a concentration from 0.05% w/w to 2% w/w.
- step (c) Another embodiment is the method of the invention, wherein the cement added as further components is a cement containing from 0 to 100% of Ordinary Portland Clinker, in concentrations ranging from 0.5 and 10% in weight with respect to the dry soil.
- the added concrete may have a zero-slump consistency in the fresh state.
- the VEBE time is influenced by the consistency of the concrete of the method of the invention. VEBE values should range from V0 to V2 according to European Standard EN 12350- 3:2009.
- a concrete suitable for step (c) of the method of the invention has a minimum initial paste volume with fillers (cement, water, fines) of at least 100 l/m 3 .
- step c) is the method of the invention, wherein the concrete used in step c) has a zero-slump consistency in the fresh state and VEBE values ranging from V0 to V2 and containing at least a volume of cementitious paste of 100 liters/m 3 .
- step (c) is pervious concrete, having an open porosity between 12 and 30% in volume and containing between 80 and 250 liters/m 3 of cement paste.
- step c) is pelletized concrete, characterized in that it has compressive strength between 30 MPa and 200 MPa, is applied on the concrete layer (layer X 2 ) to provide with a layer X-i with a thickness in a distance between 1 cm to 20 cm, preferably between 3 cm and 10 cm.
- Another embodiment is the method of the invention, wherein a supplementary layer of high performance concrete is placed on top of the asphalt layer X-i , whereas the final layer Xi has a thickness between 1 cm and 20 cm.
- high performance concrete means concrete that conforms to a set of standards above those of the most common applications. Some of the properties that may be required include: ease of placement, compaction without segregation, early age strength, long-term mechanical properties, permeability, density, heat of hydration, toughness, volume stability, long life in severe environments, resistance to chemical attack, toughness and impact resistance, volume stability and inhibition of bacterial and mold growth. Compressive strength is in the range of 50-200 MPa. High-performance concretes are made with carefully selected high-quality ingredients and optimized mixture designs; these are batched, mixed, placed, compacted and cured to the highest industry standards. Typically, such concretes will have a low water-cementing materials ratio of 0.20 to 0.45.
- Plasticizers are usually used to make these concretes fluid and workable.
- High-performance concrete almost always has a higher strength than normal concrete.
- strength is not always the primary required property.
- a normal strength concrete with very high durability and very low permeability is considered to have high performance properties.
- bituminous emulsion is applied on the X-i layer and the X-i distance is from 0.01 mm to 10 mm.
- step (c) Another embodiment is the method of the invention, wherein the concrete used in step (c) is compacted after placement by means of rolling equipment.
- This rolling equipment is typically a roller, which compacts asphalt or concrete, but also soil or gravel during the construction of infrastructure using those said materials.
- the concrete in step (c) is typically placed using a paver, that is a piece of equipment used to lay asphalt or zero-slump concrete on the sub-base when a pavement, road, bridge, parking lot or other such infrastructure is being built. Pavers lay the asphalt or concrete flat and provides minor compaction before the roller.
- a paver that is a piece of equipment used to lay asphalt or zero-slump concrete on the sub-base when a pavement, road, bridge, parking lot or other such infrastructure is being built. Pavers lay the asphalt or concrete flat and provides minor compaction before the roller.
- Pelletized concrete as described in document PCT/EP2014/057144 may be used in the method of the invention.
- Figure 1 Soil diagram, showing layers X1 , X2 and X3.
- FIG. 1 Diagram of the road used in Example 1.
- Figure 3. Grain size of soil used in Example 3.
- Figure 4. Results of compressive strength at 7 days in Example 3.
- Figure 5. Results of compressive strength at 7 days in Example 3.2.
- Figure 6. Grain size of soil used in Example 4.
- Example 1 In this example the following steps were carried out:
- step 2 Treating the soil removed in step 2 with soil stabilization admixtures.
- soil stabilization admixtures Two types of treatment being used: soil cement alone and soil cement together with a latex-based polymer.
- the method of the invention has been applied on a segment of a 28 km rural road.
- the total length of the segment where the test was carried out was 100 meters.
- the type of soil was clayey.
- Fig. 2 is a drawing representative of this example.
- the total area was 700 m 2 .
- Soil cement was applied on an area of 50x7m (350 m 2 ).
- Cement Dosage 14.28 Kg/m 2 , 3% wt of dry soil treated.
- Soil cement + Latex based polymer was applied on an area of 50x7m (350 m 2 ).
- Latex based polymer 1 dosage: 0.33 L/m 2 , diluted in water with a ratio Polymenwater 1 :1 Rest of parameters were:
- Compaction was 95% on soil cement area and 95.5% on Soil Cement + Latex based Polymer area.
- the road produced had a maximum dynamic load on single wheel around 50 kN, ideal for a rural road.
- Example 2 In this example the following steps were carried out: 1. Removing old layer soil
- Optimal moisture content about 7 %
- CBR California bearing ratio
- Example 3 This example was carried out to understand how different admixtures used in the treatment of the soil influence the final properties.
- the test methods A, B and C mentioned correspond to the test methods mentioned by the ASTM D698 method.
- Grain size of soil is shown in Fig. 3.
- test methods A, B and C mentioned correspond to the test methods mentioned by th ASTM D698 method.
- Latex-based polymer 1 Latex-based polymer 1
- Example 4 This example was carried out to understand how different admixtures used in the treatment of the soil influence the final properties.
- the test methods A, B and C mentioned correspond to the test methods mentioned by the ASTM D698 method.
- a table is shown with possible depths for each of the layers depicted in Figure 1 for three roads: two highways, one built on a soil comprising clay and sand and the other on a sandy + gravel soil, both with a maximum dynamic load on single wheel of 300 kN and one national road, with a maximum dynamic load on single wheel of 150 kN:
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2017011465A MX2017011465A (en) | 2015-03-06 | 2015-03-06 | Method to build a road. |
PCT/EP2015/054708 WO2016141950A1 (en) | 2015-03-06 | 2015-03-06 | Method to build a road |
PH12017501561A PH12017501561A1 (en) | 2015-03-06 | 2017-08-30 | Method to build a road |
CONC2017/0009098A CO2017009098A2 (en) | 2015-03-06 | 2017-09-06 | Method of building a road |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2015/054708 WO2016141950A1 (en) | 2015-03-06 | 2015-03-06 | Method to build a road |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016141950A1 true WO2016141950A1 (en) | 2016-09-15 |
Family
ID=52633269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/054708 WO2016141950A1 (en) | 2015-03-06 | 2015-03-06 | Method to build a road |
Country Status (4)
Country | Link |
---|---|
CO (1) | CO2017009098A2 (en) |
MX (1) | MX2017011465A (en) |
PH (1) | PH12017501561A1 (en) |
WO (1) | WO2016141950A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112681044A (en) * | 2020-12-22 | 2021-04-20 | 中建六局土木工程有限公司 | Portable construction method for mucky soil layer road |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999063161A1 (en) * | 1998-06-05 | 1999-12-09 | Vladimir Ronin | A method of stabilising the ground in road construction work |
EP1496161A1 (en) * | 2003-07-11 | 2005-01-12 | Ooms Avenhorn Holding B.V. | Method to stabilise the traffic route |
WO2014205581A1 (en) * | 2013-06-28 | 2014-12-31 | Acm Technologies Inc. | Method of soil stabilization using fibers |
-
2015
- 2015-03-06 MX MX2017011465A patent/MX2017011465A/en unknown
- 2015-03-06 WO PCT/EP2015/054708 patent/WO2016141950A1/en active Application Filing
-
2017
- 2017-08-30 PH PH12017501561A patent/PH12017501561A1/en unknown
- 2017-09-06 CO CONC2017/0009098A patent/CO2017009098A2/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999063161A1 (en) * | 1998-06-05 | 1999-12-09 | Vladimir Ronin | A method of stabilising the ground in road construction work |
EP1496161A1 (en) * | 2003-07-11 | 2005-01-12 | Ooms Avenhorn Holding B.V. | Method to stabilise the traffic route |
WO2014205581A1 (en) * | 2013-06-28 | 2014-12-31 | Acm Technologies Inc. | Method of soil stabilization using fibers |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112681044A (en) * | 2020-12-22 | 2021-04-20 | 中建六局土木工程有限公司 | Portable construction method for mucky soil layer road |
CN112681044B (en) * | 2020-12-22 | 2024-04-23 | 中建六局土木工程有限公司 | Portable construction method for mucky soil layer road |
Also Published As
Publication number | Publication date |
---|---|
MX2017011465A (en) | 2018-01-11 |
PH12017501561A1 (en) | 2018-02-05 |
CO2017009098A2 (en) | 2017-11-21 |
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