1. Concept

– Asphalt lotion is mixed with resin+water solvent+emulsifier

Emulsified asphalt is a mixture of two immiscible liquids (asphalt and water). Asphalt (particles with a diameter of 0.1-5 microns) is dispersed in water. Asphalt particles remain in a charged suspended state and are stabilized by emulsifiers (with surface activity).

– Forming bond: when asphalt lotion is mixed with mineral aggregate or sprayed on the pavement, water evaporates, emulsifier penetrates into the mineral aggregate, asphalt lotion separates, and tiny asphalt particles will approach each other to form a thin layer, dense on the surface of the mineral aggregate particles=>forming bonds.

Acid asphalt lotion is made of high hardness asphalt (the setting needle is less than or equal to 100.0.1mm).

2. Classification

2.1 Based on the structure of the adhesive particles

– Asphalt lotion cis

– Reverse asphalt lotions

2.2 Based on the root of the emulsifier

Anionic emulsified asphalt (TCVN 13506:2022)

Type of asphalt lotion using emulsifier with negative ion surface activity=>Therefore, asphalt lotion is alkaline (also called alkaline asphalt lotion)

At present, the popular alkaline asphalt lotion are as follows:

Explanation:

+K1-70 is a cationic lotion with rapid setting and 70% asphalt content

A2-50 is a semi-stable anionic lotion with the asphalt content of 50%.

+Other symbols:

EA: Emulsified asphalt

AEA: Anionic Emulsified Asphalt (an alkaline emulsifier that gives it a negative charge)

CEA: Cationic emulsifier Asphalt acid based emulsifier (the acid based emulsifier wrapped around it gives it a positive charge).

2.3 According to separation speed

– Rapid separation of asphalt lotion

– Moderately separated asphalt lotion

– Slowly separate asphalt lotion

2.4 Based on nature

– Ordinary asphalt lotion

– Polymer asphalt lotion

STT symbol properties and uses

(Refer to TCVN 13506-2022)

1 ARS-1 (or RS-1) rapid separation

ARS-2 (or RS-2)

3 AHFRS-2 (or HFRS-2)

4 AMS-1 (or MS-1) medium separator

5 AMS-2 (or MS-2)

6 AMS-2h (or MS-2h)

7 AFMS-1 (or HFMS-1)

8 AFMS-2 (or HFMS-2)

9 AFMS-2h (or HFMS-2h)

10 AFMS-2s (or HFMS-2s)

11 ASS-1 (or SS-1) slow separation

12 ASS-1h (or SS-1h)

13 AQS-1h (or QS-1h) early separation

Interpretation of symbols

Explanation of the symbols of alkaline asphalt lotion

English and Vietnamese

Anionic base emulsifier

RS quickly sets a fast separation speed

MS Medium Setting average separation speed

SS slow setting slow separation speed

QS Quick Setting Early Analysis

High frequency, high floating-point, high floating-point

HFRS High Floatation Point Quick Setting High Floatation Point Quick Separation

HFMS High Floatation Medium Setting High Floatation Medium Separation

H hard base asphalt is made of high hardness asphalt, with high hardness (streamlined, from 40 to 90...<100; 0.1mm)

Soft base asphalt refers to an alkaline asphalt lotion made of soft and low hardness (settlement needle>100; 0.1mm) asphalt

1. Has low viscosity

2 Has high viscosity

Asphalt lotion uses emulsifiers with positive ionic surface activity, so asphalt lotion it is acidic (also known as acidic asphalt lotion)

STT

Symbol Type Nature Time Separation Reference

Purpose of use

(Refer to TCVN 8816:2011)

1 CRS-1

Rapid separation of acid asphalt lotion for 2 hours -4 hours (adhesive lotion turns black)

2 CRS-2 1-2 hours

3 CMS-2 medium separator

4 CMS-2h

5 CSS-1

Slow separation

The minimum construction time after irrigation is 12 hours (3-4 hours)

6 CSS-1h

At least 12 hours after watering.

7 CRS-1P

Asphalt emulsifier Polime

-What?

(Symbol P: Polymer) Rapid Separation - Pouring adhesive coatings on newly constructed road surfaces, constructing special asphalt concrete coatings (thin coating rough, polymer asphalt coating...), and asphalt concrete coatings on roads with many heavy trucks, airport roads

- Plastic grilles (chip sealed) on roads with Average vehicle flow

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