(주)남흥

‘ECON’, the new brand name of Namheung’s asphalt additives.

ECON

Econ is abbreviation of Eco/Economic asphalt Chemical products of Namheung.

Liquid Warm-Mix additive [ECON WM1-200PL]

This product can be used for wide temperature range from 100℃ to 130℃. At the same time, economic benefits from energy saving and the reduction of greenhouse gas emissions are also achieved.
Warm-Mix asphalt additives of NH Corporation can lower the working temperature by 30℃ while maintaining the quality as good as hot-mix asphalt mixture.
This product can be used as Hot-Mix asphalt mixture, ECOM WM1-200PL has the function of anti-stripping.

How to use	Storage	Physical properties
How to use	Storage	Test item	Test result
When applying ECON WM1-200PL, utilizing a specially designed feeding device can be very good for workability. · Dosage : 0.5% of the asphalt content. ex – When 50Kg of asphalt is used to manufacture 1ton of asphalt mixture, the dosage of ECON WM1-200PL is 250g	Please keep at 0 ~ 30℃ Maintain the storage temperature below 60℃	Amine value	85~115mgKOH/g
		Viscosity(25℃/CPs)	1000 ~ 3000
		Specific gravity(25℃)	0.93 ~ 0.99
		Appearance	Yellow, liquid viscous
		Flash point	> 190℃

Viscosity curve

Dynamic immersion test(DIT)

Performance evaluation of ECON WM1-200PL

TSR Test & Hamburg Wheel Tracking Test

The test is based on KS F2396(Standard practice for recovery of asphalt from solution using rotary evaporator)
The test of tensile strength from external shock to mixture. (moisture & unpollinated treatment)
The mixtures which are used for surface and middle layer have to be over 80% of TSR. If they are not on that spec, anti-stripping additive must be used.

DIT Test (Dynamic Immersion test)

This test is based on European Standard (EN-12697-11). Determination of the affinity between aggregate and bitumen.
The method of test : Using the coated aggregates put into 25℃ water, and spin on 60 rpm for 6 hours and 24 hours. Check conditions of aggregates.
If they are under 50%, anti-stripping additive must be used. (Standard of Ministry of Land Korea)

Construction case of Warm-Mix [ECON WM1-200PL] I

Sae Man Keum Construction (2017.06.29)

The test report of quality test (Sae Man Keum)

Construction case of Warm-Mix [ECON WM1-200PL] II

Daegu Metropolitan Facilities Management Corporation

1. ConstructionSite : Mae Chun ro.(Tae-Jeon Highway) to Chil-Gok TG (150M) / 100ton of Warm-Mix asphalt concrete
2. ConstructionSite : Seo Byun Nam ro.(North Daegu IC) to Shin Cheonro (300M) / 200ton of Warm-Mix asphalt concrete
3. Construction details : Construction company(Yoon-Sung ASCON Corp) / Construction : Manufacturing asphalt concrete with PG 64-22. Put Warm-Mix additive into the mixture. The mixture is manufactured on 135℃. Pulling temperature was 115℃. (Commonly manufacturing temperature is 160℃ and pulling temperature is 140℃.)

- The pulling site, where has big traffic is chosen by Daegu Metropolitan Facilities Management Corp. The reason is Warm-Mix additive has a function of anti-stripping.

- Pulling time :: 6 hours 30 minutes.(Started at 22:00 on 24th, Ended at 05:00 on 25th)

- Amount of using Warm-Mix additive : 72Kg (Dosage : 0.6% of asphalt)

The expectation and environmental effects of ECON WM1-200PL

Environmental effect of ECON WM1-200PL

For road pavement, compared to Hot-Mix asphalt concrete when Warm-Mix with NH's additive. There is reducing effect of NOx(nitrogen oxides), SOx(Sulfur oxides) and fine dust in the air.
In Korea, there is reducing effect of 73.4% carbon monoxide, 72% nitrogen oxide and 41.7% sulfur oxides when Warm-Mix pavement.
In foreign, there is reducing effect of 77% fine dust when Warm-Mix pavement.

1

Reduce 30℃ of manufacturing temperature
2

Reduction of the hazardous gas exposure damage from workers
3

Shorten construction time and early traffic opening
4

Warm-Mix effect makes better compactness and better quality of asphalt concrete
5

Increased resistance to moisture and anti-stripping effect to inhibit occurrence of porthole

Reduction of Effluent gas

Effluent Gas	HMA (Hot Mix Asphalt)	WMA (Warm Mix Asphalt)	Reduction Ratio(%)
CO2	3.2	1.9	40.7(↓)
CO(ppm)	983	262	73.4(↓)
NOx	75	21	72(↓)
SOx	60	35	41.7(↓)
Fuel(l/ton)	9.3	6.3	32.3(↓)

Comparative analysis between Liquid type and Powder type additives

Division	Liquid Warm-Mix additive (NH)		Powder Warm-Mix additive
Input Method	Plant mix	Needed injection equipment.(about ＄13,000), Input A/P measuring tank	Plant mix	Needed exclusive silo(around ＄40,000), Input Mixer
Input Method	A/P Pre-mix	Applicable(Hyundai Oil bank, GSC : now on testing)	A/P Pre-mix	Non applicable
Input	250 ~ 300g per 1ton of asphalt concrete (0.5% ~ 0.6% of A/P)		1KG per 1ton of asphalt concrete
Economic feasibility	Price : 9,000won/KG, Price per ton : 2,250~2,700won		Price : 3,100won/KG, Price per ton : 3,100won
Working environment	Reduction effect of 77% fine dust		Powder state with lots of dust Poor working environment
Usability	Ease of use when applying to Pre-mix		None applicable to A/P Pre-mix
Performance	Liquid type additive has better jet force than powder type. When pave road with liquid type shows excellent performance. Warm mix and Anti-Stripping effects.		Powder type has worse get force than liquid type. When pave road with powder type shows performance degradation. There is no Anti-Stripping effect.

Product

APC