CN105806747A - Asphalt-aggregate interface adhesion property testing method - Google Patents

Abstract

The invention discloses an asphalt-aggregate interface adhesion property testing method. The method comprises the following steps: A, selecting three testing liquids which are not dissolved in asphalt and have known surface energy; B, heating the asphalt or a warm mixing agent till a flowing state is achieved, respectively casting on a plate, cooling to form a smooth plane, and grinding aggregate into a smooth plane of which two sides are parallel to each other; C, respectively dripping the three liquids on the smooth plane formed by the asphalt, the warm mixing agent or the aggregate in the step B, and respectively measuring contact angles of three testing liquids on the surface of the asphalt, the aggregate or the warm mixing agent; D, calculating the surface energy of the asphalt, the aggregate or the warm mixing agent; E, respectively constructing adhesion models in different systems, and calculating adhesion work of the adhesion models; and F, establishing energy parameters, and evaluating the influence of an additive to the adhesion property of asphalt-aggregate in an implementation sequence of steps A, B, C-F or B, A, C-F. By adopting the asphalt-aggregate interface adhesion property testing method, the influence of the additive to the adhesion property of the system can be evaluated.

Description

A kind of bitumen-aggregate interfacial adhesion performance measurement method

Technical field

The invention belongs to pavement construction material Performance Evaluation Technique field, relate to a kind of warm-mixed asphalt-aggregate Interface and stick Performance measurement method.

Background technology

Warm-Mix Bitumen Mixture has the feature of energy-conserving and environment-protective, but owing to its drying temperature of gathering materials is relatively low, may make The middle moisture that gathers materials can not be got rid of completely, and the moisture being trapped in gathering materials is easily collected on and gathers materials and asphalt interface, thus affects drip Blue or green and bond performance between gathering materials, causes the generation of the diseases such as loose, the peeling of bituminous paving, i.e. bituminous paving occurs in that water damages Evil.For popularization and application Warm-Mix Bitumen Mixture in large area, many experts and scholars take up to ask Water Damage on Asphalt Pavement Topic is studied.

The Main Basis of the Water damage mechanism of action is adhesion theory.It is used at present explaining sticking between bitumen-aggregate Attached theory includes: theory of mechanics, chemical reaction theory, surface energy theory and molecular orientation are theoretical.Adhesion theory is used to enter The research of row Warm-Mix Bitumen Mixture water stability, will carry in real road engineering for Warm-Mix Bitumen Mixture widespread adoption For theoretical basis, also can illustrate the reason that Warm-Mix Bitumen Mixture water stability is poor simultaneously, disclose bituminous paving generation water and damage The mechanism of action of evil.

Use surface energy theory research Colophonium and the Adhesion property between gathering materials, domestic start late, but along with research more Coming the most extensive, surface energy theory is admitted by more researcher, and has carried out substantial amounts of research.

The Chinese periodical paper that Zheng Xiaoguang, Yang Qun et al. deliver in " highway at home and abroad " " uses surface free energy theory analysis Stability of asphalt mixture " in use the surface free energy that Wilhelmy hangs sheet method and absorption method records Colophonium, gathers materials, calculate Obtain the adhesion between cohesive action and the bitumen-aggregate of Colophonium, test conclusion and Colophonium adhesion theory phase one Cause.

Chinese periodical paper " Colophonium and the mineral aggregate adhesion that Xiao Qingyi, Hao Peiwen et al. deliver in " Chang An University's journal " Assay method " in use work of adhesion experimental study to characterize Colophonium and the feasibility of adhesion of gathering materials, with moistening adsorption theory be Basis, have studied Colophonium and the internal relation of the adhesion gathered materials Yu adhesive force, analyzes Colophonium, surface of aggregate wettability pair The impact of bond strength between Colophonium and aggregate Interface, it is proposed that refer to as the sign of Colophonium with adhesion of gathering materials using work of adhesion Mark, devises with asphalt surface tension force γ and Colophonium in the surface of aggregate contact surface θ test method as basic parameter, the most right Micro analysis and boiling test result compare.

Chinese periodical paper " the drip based on surface energy theory that Liu Yamin, Han Sen et al. deliver in " Journal of Building Materials " Blue or green with mineral aggregate adhesion research " in test two kinds of Colophoniumes and two kinds of surface energy parameters gathered materials, calculate and summarize work of adhesion With the change of surface free energy, analyze anhydrous and have in the case of water the change of Colophonium self cohesion and bitumen-aggregate sticks and The trend peeled off, propose to have, anhydrous condition lower surface free energy ratio as the evaluation index of adhesion, analyze difference drip The size of green grass or young crops-adhesion of gathering materials.

Southeast China University's journal；Natural science edition, the 1st phase of volume 44 in January, 2014, China's phase disclosed in page 183 page-187 Periodical paper " the adhesion properties research of bitumen-aggregate system based on surface energy theory ", discloses a kind of based on surface energy theory Bitumen-aggregate system stick assay method, including choosing three kinds of test liquid (distilled water, glycerol insoluble in Colophonium And Methanamide.The Qu Changzhi that the surface free energy of these three test liquid and component thereof can be published from Science Presses in 1987 " the physics typical number table " of the meal Tian Xiuyi of translation checks in), and use contact angle tester to measure three kinds of test liquids in drip The contact angle on blue or green surface；Then calculate the surface free energy of Colophonium, bitumen-aggregate work of adhesion and bitumen-aggregate and peel off merit, finally Work of adhesion result according to bitumen-aggregate show that the acid ingredient that gathers materials increases, and the work of adhesion of system can decline, and adds anti-strip Agent is modified, and work of adhesion increases in various degree；According to peeling off merit result of calculation, show that the acid ingredient that gathers materials increases, peel off merit not Increase with degree, and antistripping agent makes peeling merit decline.

But, in the paper delivered above, provide only surface energy method for measuring, do not carry out detailed determination step Explanation, and fail to propose correspondingly index to evaluate the Adhesion property between bitumen-aggregate interface.At the above-mentioned paper delivered In, rely solely on the soda acid composition size gathered materials to judge that it, to the Adhesion property between bitumen-aggregate interface, does not propose The ratio size of Colophonium work of adhesion and peeling merit judges the Adhesion property between bitumen-aggregate interface.Meanwhile, deliver above-mentioned Paper in, when calculating work of adhesion when, only account for Colophonium surface can, do not consider the surface that gathers materials can, the most directly count Calculating bitumen-aggregate work of adhesion and peel off merit, the result so calculated lacks accuracy.

The invention provides the assay method of a kind of practicable bitumen-aggregate interfacial adhesion performance, including to former material The process of material, the selection of test(ing) liquid, Colophonium, the test procedure of surface of aggregate free energy, the foundation etc. of energy parameter.

Summary of the invention

For evaluating the Adhesion property at bitumen-aggregate interface, the present invention provides the survey of a kind of bitumen-aggregate interfacial adhesion performance Determine method, comprise the following steps:

A. selecting the test liquid of three kinds of known surface energy, these three test liquid does not dissolves in Colophonium；

B. Colophonium or additive are heated to flow regime, water respectively on flat board, be cooled into smooth plane；Will collection Material is polished into the smooth flat that two sides is parallel, cleans and dries.

C. described three kinds of test liquids are dropped in respectively step B medium pitch, additive or gather materials in the smooth flat formed, Contact angle measurement is utilized to measure three kinds of test liquids contact angle in Colophonium, additive or surface of aggregate respectively；

D. Young-Dupre formula is utilized to calculate Colophonium respectively, gather materials, or, and the surface free energy of additive；

E. based on liquid, solid surface free energy theory, in conjunction with Gibbs Gibbs free, sticking under different system is built respectively Attached model, and calculate its work of adhesion；

F. utilize work of adhesion, set up energy parameter, evaluate water or additive bitumen-aggregate circle according to the size of energy parameter Adhering capacity between face.Wherein, additive is preferably warm-mixing agent.

Colophonium or warm-mixing agent are heated to flow regime, water on flat board, be cooled into smooth plane.Meanwhile, will collection Material is polished into the smooth flat that two sides is parallel, cleans and dries, being possible to prevent described three kinds of test liquids in asphalt surface or temperature Mix agent surface or surface of aggregate skewness, so that described three kinds of test liquids and Colophonium, warm-mixing agent and/or gather materials it Between contact angle test inaccurate, and then affect Colophonium, warm-mixing agent and/or gather materials surface energy calculating, finally affect adhesion Merit, the calculating peeling off merit and the accuracy of energy parameter.Only by the test analysis of surface energy, it is merely able to state qualitatively add Add agent to work of adhesion or the impact of peeling merit.And the foundation of energy parameter, can avoid individually analyzing work of adhesion and peel off merit and Can not the defect of systems fatigue reliability Adhesion property, utilize the method that the present invention provides, by calculating the value of energy parameter and with 1 Compare, can quantitative analysis water or the warm-mixing agent impact on asphaltaggregate interfacial adhesion performance.Meanwhile, relative to Southeast China University Journal (natural science edition), the 1st phase of volume 44 in January, 2014, disclosed in page 183 page-187, Chinese periodical paper is " based on surface The adhesion properties research of bitumen-aggregate system that can be theoretical " disclosed in scheme, the present invention measure simultaneously three kinds of liquid Colophonium, Gather materials or the contact angle on warm-mixing agent surface, and calculate Colophonium, gather materials, the surface free energy of warm-mixing agent, then further according to surface from By result of calculation calculating its work of adhesion.

The bitumen-aggregate interfacial adhesion performance measurement method that the present invention provides, it is adaptable to all bitumen-aggregate interfaces, bag Include matrix pitch and modified pitch, such as warm-mixed asphalt etc..

Preferably, described three kinds of test liquids use distilled water, glycerol, Methanamide.

In any of the above-described scheme preferably, described Colophonium is matrix pitch.

In any of the above-described scheme preferably, described Colophonium is modified pitch.

In any of the above-described scheme preferably, described Colophonium is warm-mixed asphalt.

In any of the above-described scheme preferably, described warm-mixing agent is organic wax warm-mixing agent.

In any of the above-described scheme preferably, described warm-mixing agent is S organic wax warm-mixing agent (i.e. Sasobit warm-mixing agent) or R Organic wax warm-mixing agent (i.e. RH warm-mixing agent).

In any of the above-described scheme preferably, gather materials for natural aggregate described in.

In any of the above-described scheme preferably, gather materials described in for limestone or basalt.

In any of the above-described scheme preferably, stick model described in and include bitumen-aggregate two-phase system model, Colophonium-collection Material-water three-phase system model, bitumen-aggregate-warm-mixing agent three-phase system model, bitumen-aggregate-warm-mixing agent-water four phase system mould Type.

In any of the above-described scheme preferably, described bitumen-aggregate two-phase system model is

$W_{as}=-{\mathrm{\ΔG}}_{as}=2(\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}+\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}+\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}}),$

Wherein, W_asRepresent the work of adhesion between bitumen-aggregate, γ_a ^LW、γ_s ^LWRepresent Colophonium and the surface energy gathered materials respectively In nonpolar moiety, γ_a ⁺、γ_s ⁺Represent the acid action component in Colophonium and the surface energy that gathers materials, γ respectively_a ^-、γ_s ^-Respectively Represent the alkaline action component in Colophonium and the surface energy that gathers materials.

In any of the above-described scheme preferably, described bitumen-aggregate-water three-phase system model

Wa_sw=γ_aw+γ_sw-γ_as,

Wherein W_aswRepresent the work of adhesion between bitumen-aggregate-water, γ_awRepresent Colophonium and the interface energy on water engaging surface； γ_swRepresent and gather materials and the interface energy on water engaging surface, γ_asRepresent Colophonium and the interface energy on aggregate contact face.

In any of the above-described scheme preferably, described bitumen-aggregate-water three-phase system model is

$\begin{array}{c}{W}_{asw}=-(2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_w^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}\right)+2\sqrt{{\mathrm{\γ}}_w^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}\right)\\ -2{\mathrm{\γ}}_w^{LW}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}-4\sqrt{{\mathrm{\γ}}_w^{+}{\mathrm{\γ}}_w^{-}}-2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}-2\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}})\end{array},$

Wherein, W_aswRepresent the work of adhesion between bitumen-aggregate-water, γ_a ^LW、γ_s ^LW、γ_w ^LWRepresent Colophonium respectively, gather materials And the nonpolar moiety in the surface energy of water, γ_a ⁺、γ_s ⁺、γ_w ⁺Represent Colophonium respectively, gather materials and acidity in the surface energy of water Action component, γ_a ^-、γ_s ^-、γ_w ^-Represent the alkaline action component in the surface energy of asphaltaggregate and water respectively.

In any of the above-described scheme preferably, described bitumen-aggregate-warm-mixing agent three-phase system model

$W_{ase}=2(\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_e^{LW}}+\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_e^{-}}+\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_e^{+}}+\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_e^{LW}}+\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}{\mathrm{\γ}}_e^{+}}-{\mathrm{\γ}}_e^{LW}-\sqrt{{\mathrm{\γ}}_e^{+}{\mathrm{\γ}}_e^{-}}),$

Wherein, W_aseRepresent the work of adhesion between bitumen-aggregate-warm-mixing agent, γ_a ^LW、γ_s ^LW、γ_e ^LWRepresent respectively Colophonium, Gather materials and nonpolar moiety in the surface energy of warm-mixing agent, γ_a ⁺、γ_s ⁺、γ_e ⁺Represent Colophonium respectively, gather materials and the table of warm-mixing agent Acid action component in the energy of face, γ_a ^-、γ_s ^-、γ_e ^-Represent the alkalescence effect in the surface energy of asphaltaggregate and warm-mixing agent respectively Composition.

In any of the above-described scheme preferably, described bitumen-aggregate-warm-mixing agent-water four phase system model

$\begin{array}{c}{W}_{asew}=-(4\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_e^{LW}}+4\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_e^{LW}}-4\sqrt{{\mathrm{\γ}}_e^{LW}{\mathrm{\γ}}_w^{LW}}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_w^{LW}}\\ -2\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_e^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}\right)+2\sqrt{{\mathrm{\γ}}_e^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}\right)\\ -2\sqrt{{\mathrm{\γ}}_w^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}+2\sqrt{{\mathrm{\γ}}_e^{-}}\right)-2\sqrt{{\mathrm{\γ}}_w^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}+2\sqrt{{\mathrm{\γ}}_e^{+}}\right)+2{\mathrm{\γ}}_w^{LW}\\ -2{\mathrm{\γ}}_e^{LW}+4\sqrt{{\mathrm{\γ}}_w^{+}{\mathrm{\γ}}_w^{-}}-4\sqrt{{\mathrm{\γ}}_e^{+}{\mathrm{\γ}}_e^{-}}-2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}\\ -2\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}}+2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_e^{-}}+2\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_e^{+}}+2\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}}+2\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}})\end{array},$

Wherein, W_asewRepresent the work of adhesion between bitumen-aggregate-warm-mixing agent-water, γ_a ^LW、γ_s ^LW、γ_e ^LW、γ_w ^LWRespectively Represent Colophonium, gather materials, nonpolar moiety in the surface energy of warm-mixing agent and water, γ_a ⁺、γ_s ⁺、γ_e ⁺、γ_w ⁺Represent respectively Colophonium, Gather materials, acid action component in the surface energy of warm-mixing agent and water, γ_a ^-、γ_s ^-、γ_e ^-、γ_w ^-Represent respectively Colophonium, gather materials, temperature Mix the alkaline action component in the surface energy of agent and water.

In any of the above-described scheme preferably, described energy parameter is bitumen-aggregate two-phase system work of adhesion and Colophonium-collection The ratio of material-water three-phase system work of adhesion or bitumen-aggregate-warm-mixing agent three-phase system and bitumen-aggregate-water-warm-mixing agent four phase The ratio of system work of adhesion.

In any of the above-described scheme preferably, described energy parameter is EP₁=W_as/W_aswOr W_ase/W_asew。

In any of the above-described scheme preferably, described energy parameter EP₁For evaluating water to bitumen-aggregate two-phase system The impact of Adhesion property or the water impact on the Adhesion property of bitumen-aggregate-warm-mixing agent three-phase system.EP₁Use anhydrous and have The ratio of work of adhesion under aqueous systems, it is to avoid independent calculating work of adhesion and peel off merit and the water Adhesion property to system can not be evaluated The defect of impact.

In any of the above-described scheme preferably, EP is worked as₁During ＞ 1, represent that the work of adhesion of bitumen-aggregate two-phase system is greater than The work of adhesion of the work of adhesion of bitumen-aggregate-water three-phase system or bitumen-aggregate-warm-mixing agent three-phase system is greater than Colophonium-collection Material-water-warm-mixing agent four phase system work of adhesion, i.e. water to the Adhesion property of bitumen-aggregate or water to bitumen-aggregate warm-mixing agent Adhesion property impact less；Work as EP₁When=1, represent that water is to bitumen-aggregate two-phase system or bitumen-aggregate-warm-mixing agent three-phase The Adhesion property impact of system is little；Work as EP₁During ＜ 1, represent that water is to bitumen-aggregate two-phase system or bitumen-aggregate-warm-mixing agent The Adhering capacity of three-phase system has large effect.

In any of the above-described scheme preferably, described energy parameter is EP₂=W_as/W_aseOr W_asw/W_asew。

In any of the above-described scheme preferably, described energy parameter EP₂For evaluating warm-mixing agent to bitumen-aggregate two-phase mixture The impact of the Adhering capacity of system or the warm-mixing agent impact on bitumen-aggregate-water three-phase system Adhesion property.

In any of the above-described scheme preferably, EP is worked as₂During ＞ 1, represent that warm-mixing agent is to bitumen-aggregate two-phase system or drip The Adhering capacity of blue or green-to gather materials-water three-phase system adversely affects；Work as EP₂When=1, represent that warm-mixing agent is to bitumen-aggregate two-phase mixture The Adhesion property impact of system or bitumen-aggregate-water three-phase system is little；Work as EP₂During ＜ 1, represent that warm-mixing agent is to bitumen-aggregate two The Adhering capacity of phase system or bitumen-aggregate-warm-mixing agent three-phase system has Beneficial Effect.

The present invention utilizes surface energy theory, by Colophonium, gather materials, the surface of warm-mixing agent can measurement, set up not consubstantiality Stick model under Xi, and calculate energy parameter, utilize energy parameter to evaluate water or warm-mixing agent to bitumen-aggregate Adhesion property Impact.The present invention is simple to operate, and instrument only needs contact angle measurement, by setting up sticking between model analysis bitumen-aggregate Performance.

Surface can just be used to the energy needed for when tolerance creates material surface destroying intermolecular chemical bond.From material list The angle of face molecule is analyzed, and understands based on solid-state physics theory, and surface atom has more than the atom within material Energy, according to maximum energy criterion, what atom can be spontaneous tends to material inside rather than surface.Contact angle refers to that liquid is at solid Surface remains static and keeps certain stable form, and can shape have a certain degree between solid, utilizes Young- Dupre formula can react the relation between contact angle and interfacial tension.Stick under different systems the foundation of model be based on Gibbs free energy is theoretical, i.e. the change of system capacity before and after reactions change, it is established that come.Energy parameter is by difference system Under work of adhesion compare, by the size reaction additives of its ratio, such as water or warm-mixing agent, to bitumen-aggregate interface The impact of Adhesion property.

The technical specification of matrix pitch should meet in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) to be had Close the technical stipulation of Colophonium.

Detailed description of the invention

In order to be more clearly understood from the summary of the invention of the present invention, below in conjunction with instantiation, the present invention is done furtherly Bright.

Embodiment 1

A kind of bitumen-aggregate interfacial adhesion performance measurement method, including as follows according to the following steps of sequencing:

Step A: detect the surface free energy of distilled water, glycerol, Methanamide；

Step B: Colophonium is heated to flow regime, and waters on the glass sheet, be cooled into smooth plane.To gather materials (limestone) is polished into the smooth flat that two sides is parallel, cleans and dries so that, in smooth plane, three kinds in step A Liquid is uniformly distributed, and is conducive to obtaining result accurately, and limestone two sides is parallel, is to be to be distributed in step A three kinds The smooth flat of liquid does not tilts, and is also to ensure that described three kinds of liquid are uniformly distributed in smooth flat, is further ensured that mensuration The accuracy of result；

Step C. utilizes contact angle measurement to measure three kinds of test liquids respectively at Colophonium, the contact angle on limestone surface；

The contact angle measured in step C is substituted into Young-Dupre formula by step D. respectively, the table calculate Colophonium, gathering materials Face energy；

Step E. is theoretical based on liquid, solid surface free energy, in conjunction with Gibbs Gibbs free, is built with water and anhydrous condition Under bitumen-aggregate stick model and bitumen-aggregate-water sticks model, and calculate its work of adhesion；

Step F. utilizes to be had water and not to have the work of adhesion of aqueous systems, sets up energy parameter, evaluates water to bitumen-aggregate adhesion energy The impact of power.Work as EP₁During ＞ 1, represent that bitumen-aggregate two-phase system Adhering capacity is preferable；Work as EP₁When=1, represent water to Colophonium- The Adhesion property impact of two-phase system of gathering materials is little；Work as EP₁During ＜ 1, represent the water Adhering capacity to bitumen-aggregate two-phase system There is large effect.

Specific operation process and the parameter that relate to are described below.

When implementing step A, check in distilled water, glycerol, the free energy of Methanamide and component thereof as shown in table 1.

The surface of 1 three kinds of test liquids of table can parameter

When implementing step B, used by gather materials for limestone, Colophonium used is matrix pitch (SK-90 Colophonium), its performance indications It is shown in Table 2 respectively.

Table 2 SK-90 matrix pitch technical specification

The technical specification of SK-90 Colophonium meets in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) relevant The technical stipulation of No. 90 Colophoniumes.

When implementing step C, for guarantee test precision and the accuracy of result of the test, devise distilled water, glycerol, formyl The orthogonal test of three kinds of test liquids of amine, and every kind of test liquid all measures three groups of panel datas under identical experimental enviroment, And by the contact angle at Image XP read test liquid two ends, every identical test liquid all records contact angle around Average.Three kinds of test liquids Contact-angle measurement result on SK-90 matrix pitch surface is as shown in table 3.

Table 3 SK-90 matrix pitch and test liquid Contact-angle measurement result

Three kinds of test liquids are as shown in table 4 at the contact angle of limestone surfaces.

Table 4 limestone and test liquid Contact-angle measurement result

Young's equation:

γ_mCos θ=γ_sG-γ_sL (1-1)

The relation between contact angle and interfacial tension can be reacted.

HeferandLittle points out that the principle evaluating stability of asphalt mixture from thermodynamic argument is mainly Gibbs Free energy.Gibbs free energy refers to the difference of certain system initial state and the free energy of final states, represents with Δ G.As Δ G ＜ 0, release energy；As Δ G ＞ 0, absorb energy；As Δ G=0, system is in poised state.

For Colophonium, the generation in unit are crack will necessarily form the new surface of two unit ares, so

W_a=2 γ_a (1-2)

ΔG_a=-2 γ_a (1-3)

In formula: W_a-overcome Colophonium cohesiveness work done；

γ_aThe surface energy of-Colophonium；

ΔG_a-Colophonium cohesive energy；

Following formula (1-3) and (1-4) can be used to calculate W for Colophonium and the two kinds of different materials that gather materials_asWith Δ G_as:

W_as=γ_a+γ_s-γ_as (1-4)

ΔG_as=γ_as-γ_a-γ_s (1-5)

In formula: W_as-overcome Colophonium and cohesion work done of gathering materials；

γ_aThe surface energy of-Colophonium；

γ_s-surface the energy that gathers materials；

γ_as-Colophonium and the interface energy on aggregate contact face；

ΔG_as-Colophonium and gathering materials stick during Gibbs Gibbs free.

Owing to material surface can mainly polarized and nonpolar two parts form, so

Colophonium: ${\mathrm{\γ}}_a={\mathrm{\γ}}_a^{LW}+{\mathrm{\γ}}_a^{AB}---(1-6)$

Gather materials: ${\mathrm{\γ}}_s={\mathrm{\γ}}_s^{LW}+{\mathrm{\γ}}_s^{AB}---(1-7)$

Bitumen-aggregate: ${\mathrm{\γ}}_{as}={\mathrm{\γ}}_{as}^{LW}+{\mathrm{\γ}}_{as}^{AB}---(1-8)$

In formula:-Colophonium nonpolar moiety；-Colophonium polar portion.

Wherein ${\mathrm{\γ}}_{as}^{LW}={(\sqrt{{\mathrm{\γ}}_a^{LW}}-\sqrt{{\mathrm{\γ}}_s^{LW}})}^2;{\mathrm{\γ}}_{as}^{AB}=2(\sqrt{{\mathrm{\γ}}_a^{+}}-\sqrt{{\mathrm{\γ}}_s^{+}})(\sqrt{{\mathrm{\γ}}_a^{-}}-\sqrt{{\mathrm{\γ}}_s^{-}});$

${\mathrm{\γ}}_a^{AB}=2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_a^{-}};{\mathrm{\γ}}_s^{AB}=2\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_s^{-}};$

In formula:The acid action component of-asphalt surface free energy；

The alkaline action component of-asphalt surface free energy；

The acid action component of-surface of aggregate free energy；

The alkaline action component of-asphalt surface free energy.

Can obtain in conjunction with (1-5), (1-6), (1-7), (1-8):

$W_{as}=-{\mathrm{\ΔG}}_{as}=2(\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}+\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}+\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}})---(1-9)$

Convolution (1-1), (1-4), (1-9) can obtain:

${\mathrm{\γ}}_a(1+cos\mathrm{\θ})=2(\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}+\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}+\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}})---(1-10)$

Formula (1-10) is exactly famous Young-Dupre formula.

When implementing step D, bring contact angle (data in table 3 and the table 4) result measured in step C into formula (1- 10) surface free energy of SK-90 matrix pitch and limestone, it is calculated as shown in Table 5 and 6.

Table 5 SK-90 matrix pitch surface can result of calculation (mJ/m²)

Table 6 limestone surface free energy result of calculation (mJ/m²)

When implementing step E, theoretical based on solid, liquid surface free energy, from Gibbs Gibbs free, set up Colophonium-collection Material two-phase system model (i.e. formula 1-9):

$W_{as}=-{\mathrm{\ΔG}}_{as}=2(\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}+\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}+\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}})$

In formula: W_asWork of adhesion between-bitumen-aggregate.

In like manner, bitumen-aggregate-water three-phase system model is set up:

W_asw=_aw+_sw-γ_as (1-11)

By Colophonium, gather materials, the surface free energy of water brings formula (1-11) into, then can calculate bitumen-aggregate under water condition Peeling merit (i.e. work of adhesion under bitumen-aggregate-water three-phase system), see below formula:

$\begin{array}{c}{W}_{asw}=-(2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_w^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}\right)+2\sqrt{{\mathrm{\γ}}_w^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}\right)\\ -2{\mathrm{\γ}}_w^{LW}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}-4\sqrt{{\mathrm{\γ}}_w^{+}{\mathrm{\γ}}_w^{-}}-2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}-2\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}})\end{array}---\left(1-12\right)$

In formula: W_aswWork of adhesion between-bitumen-aggregate-water.

By the SK90 matrix pitch in the table 5 obtained in step D and table 6 and the surface free energy parameter carry over score of limestone Other formula (1-9) and (1-12), be calculated W_as=64.43mJ/m², W_asw=52.07mJ/m²。

When implementing step F, utilize anhydrous and have the work of adhesion of bitumen-aggregate under water condition, setting up energy parameter EP₁= W_as/W_asw, and the W that will obtain in step E_asAnd W_aswBring into, be calculated energy parameter EP₁=1.24 ＞ 1, illustrate the present embodiment In bitumen-aggregate two-phase system Adhering capacity preferable.

When referring to the Adhesion property of an individual system, generally require and consider to add the glutinous of these former and later two systems of additive simultaneously Attached merit, therefore, individually calculate its work of adhesion can not the Adhesion property of appraisement system, only set up energy parameter, could effectively On the impact on system Adhesion property of this additive, and also can reach this additive of quantitative analysis by calculating system is sticked The impact of performance, to obtain the limit value of the addition of this additive.

The enforcement order of above step A and B also can be exchanged.

Embodiment 2

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 1, when implementing step B, removes Colophonium is heated to flow regime, and waters on glass, form smooth plane, also warm-mixing agent (Sasobit) is heated to Flow regime, and water on the glass sheet, it is cooled into smooth plane.

When implementing step C, also measure and obtain three kinds of test liquids contact angle on Sasobit warm-mixing agent surface such as table 7 institute Show.

Table 7 Sasobit warm-mixing agent and test liquid Contact-angle measurement result

When implementing step D, bring the Contact-angle measurement result on Sasobit warm-mixing agent surface in table 4 into formula

(1-10) surface free energy, being calculated Sasobit warm-mixing agent is as shown in table 8.

Table 8 Sasobit warm-mixing agent surface can result of calculation (mJ/m²)

When implementing step E, set up bitumen-aggregate-warm-mixing agent three-phase system model:

$W_{ase}=2(\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_e^{LW}}+\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_e^{-}}+\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_e^{+}}+\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_e^{LW}}+\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}{\mathrm{\γ}}_e^{+}}-{\mathrm{\γ}}_e^{LW}-\sqrt{{\mathrm{\γ}}_e^{+}{\mathrm{\γ}}_e^{-}})---\left(1-13\right)$

In formula: W_aseWork of adhesion between-bitumen-aggregate-warm-mixing agent, γ_e ⁺The alkalescence of-asphalt surface free energy acts as Point, γ_e ^-The alkaline action component of-asphalt surface free energy.

In like manner, bitumen-aggregate-warm-mixing agent-water four phase system model can be obtained:

$\begin{array}{c}{W}_{asew}=-(4\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_e^{LW}}+4\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_e^{LW}}-4\sqrt{{\mathrm{\γ}}_e^{LW}{\mathrm{\γ}}_w^{LW}}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_w^{LW}}\\ -2\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_e^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}\right)+2\sqrt{{\mathrm{\γ}}_e^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}\right)\\ -2\sqrt{{\mathrm{\γ}}_w^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}+2\sqrt{{\mathrm{\γ}}_e^{-}}\right)-2\sqrt{{\mathrm{\γ}}_w^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}+2\sqrt{{\mathrm{\γ}}_e^{+}}\right)+2{\mathrm{\γ}}_w^{LW}\\ -2{\mathrm{\γ}}_e^{LW}+4\sqrt{{\mathrm{\γ}}_w^{+}{\mathrm{\γ}}_w^{-}}-4\sqrt{{\mathrm{\γ}}_e^{+}{\mathrm{\γ}}_e^{-}}-2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}\\ -2\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}}+2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_e^{-}}+2\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_e^{+}}+2\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}}+2\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}})\end{array}---\left(1-14\right)$

In formula: W_asewWork of adhesion between-bitumen-aggregate-warm-mixing agent-water.

Bring Colophonium, gather materials (limestone), the surface free energy (table 5, table 6 and table 8) of Sasobit warm-mixing agent into formula (1-13) it is calculated W with (1-14)_ase=68.38mJ/m², W_asew=37.91mJ/m²。

In step F, set up energy parameter EP₁=W_ase/W_asew=1.8 ＞ 1, illustrate the SK-90 substrate drip in the present embodiment The adhesion property of green grass or young crops-limestone-Sasobit warm-mixing agent system is preferable.

Embodiment 3

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 2, when implementing step B, temperature Mix agent and change RH into from Sasobit, and measurement obtains three kinds of test liquids contact angle on warm-mixing agent RH surface in step C, step The surface free energy being calculated RH warm-mixing agent in rapid D is as shown in table 9.

Table 9 RH warm-mixing agent surface free energy result of calculation (mJ/m²)

Therefore, step E is calculated W_ase=71.25mJ/m², Wasew=45.76mJ/m².Energy parameter in step F EP₁=1.56 ＞ 1, illustrate that the adhesion property of the SK-90 matrix pitch in the present embodiment-limestone-RH warm-mixing agent is preferable.

Embodiment 4

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 1, gathers materials and is changed into by limestone Basalt.In step C, measure three kinds of test liquids contact angle result on basalt surface as shown in table 10.

Table 10 basalt and test liquid Contact-angle measurement result

In step D, calculated basalt surface free energy result is as shown in table 11.

Table 11 basalt surface free energy result of calculation (mJ/m²)

In step E, bring SK-90 matrix pitch and basalt surface free energy data into formula (1-9) and (1-12), Work of adhesion W to SK-90 matrix pitch-basalt system_as=56.08mJ/m², sticking of SK-90 matrix pitch-basalt-water Attached merit W_asw=50.87mJ/m²。

In step F, energy parameter EP₁=W_as/W_asw=1.1 ＞ 1, illustrate the viscous of SK-90 matrix pitch-basalt system Attached better performances.

Embodiment 5

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 2, limestone therein changes into Basalt, contact angle on basalt surface of three kinds of test liquids and basaltic surface free energy result are with embodiment 4.

In step E, bring SK-90 matrix pitch, basalt, the surface free energy data of Sasobit warm-mixing agent into formula (1-13) with (1-14), the work of adhesion W of SK-90 matrix pitch-basalt-Sasobit warm-mixing agent system is obtained_ase= 57.46mJ/m², the work of adhesion W of SK-90 matrix pitch-basalt-Sasobit warm-mixing agent-water_asew=44.23mJ/m²。

In step F, energy parameter EP₁=W_ase/W_asew=1.3 ＞ 1, illustrate SK-90 matrix pitch-basalt-Sasobit The adhesion property of warm-mixing agent system is preferable.

Embodiment 6

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 3, limestone therein changes into Basalt, contact angle on basalt surface of three kinds of test liquids and basaltic surface free energy result are with embodiment 4.

In step E, bring SK-90 matrix pitch, basalt, the surface free energy data of RH warm-mixing agent into formula (1-13) (1-14) the work of adhesion W of Colophonium-basalt-RH warm-mixing agent system, is obtained_ase=62.10mJ/m², SK-90 matrix pitch-profound The work of adhesion W of Wu Yan-RH warm-mixing agent-water_asew=48.55mJ/m²。

In step F, energy parameter EP₁=W_ase/W_asew=1.28 ＞ 1, illustrate Colophonium-basalt-RH warm-mixing agent system Adhesion property is good.

Understand from embodiment 1-6, EP₁Value is all higher than 1, illustrates in bitumen-aggregate and bitumen-aggregate-warm-mixing agent system After middle addition water, it peels off merit and has declined compared with its work of adhesion, and EP₁Being worth the biggest, water stability is the poorest.

Embodiment 7

A kind of bitumen-aggregate interfacial adhesion performance measurement method, including as follows according to the following steps of sequencing:

Step A: detect the surface free energy of distilled water, glycerol, Methanamide；

Step B: Colophonium and warm-mixing agent are heated to flow regime, and water respectively on the glass sheet, be cooled into smooth Plane, is polished into, using limestone (as gathering materials), the smooth flat that two sides is parallel, cleans and dries so that, in smooth plane On, three kinds of liquid in step A are uniformly distributed, and be conducive to obtaining result accurately, and limestone two sides is parallel, are to be point In cloth A in steps, the smooth flat of three kinds of liquid does not tilts, and is also to ensure that described three kinds of liquid are uniformly distributed in smooth flat, It is further ensured that the accuracy of measurement result；

Step C. utilizes contact angle measurement to measure three kinds of test liquids respectively in SK-90 matrix pitch, surface of aggregate Contact angle；

The contact angle measured in step C is substituted into γ oung-Dupre formula by step D. respectively, the table calculate Colophonium, gathering materials Face free energy；

Step E. is theoretical based on liquid, solid surface free energy, in conjunction with Gibbs Gibbs free, builds bitumen-aggregate and sticks mould Type and bitumen-aggregate-warm-mixing agent stick model, and calculate its work of adhesion；

Step F. utilizes the work of adhesion of the system having warm-mixing agent and there be not warm-mixing agent, sets up energy parameter, evaluates warm-mixing agent pair The impact of bitumen-aggregate Adhering capacity.

Other are substantially the same manner as Example 1, but set up energy parameter EP₂=W_as/W_ase, it is used for evaluating warm-mixing agent to drip The impact of green grass or young crops-two-phase system interfacial adhesion performance of gathering materials.

Work as EP₂During ＞ 1, represent that the Adhering capacity of bitumen-aggregate two-phase system is adversely affected by warm-mixing agent；Work as EP₂=1 Time, represent that the Adhesion property of bitumen-aggregate two-phase system is affected little by warm-mixing agent；Work as EP₂During ＜ 1, represent that warm-mixing agent is to drip The Adhering capacity of the green grass or young crops-two-phase system that gathers materials has Beneficial Effect.

In step A, the surface energy parameter of three kinds of test liquids is with embodiment 1.

In step B, described Colophonium is SK90 matrix pitch, and its performance is with embodiment 1, and described warm-mixing agent is Sasobit temperature Mix agent, described in gather materials for limestone.

In step C and D, the surface of Contact-angle measurement result on limestone surface of three kinds of test liquids and limestone is freely Energy result of calculation is with embodiment 1, the contact angle on three kinds of test liquid Sasobit warm-mixing agent surfaces and the table of Sasobit warm-mixing agent Face free energy result of calculation is with embodiment 2.

In step E, setting up SK-90 matrix pitch-limestone system, its work of adhesion result of calculation Was is also with embodiment 1； In like manner, SK-90 matrix pitch-limestone-Sasobit warm-mixing agent system, its work of adhesion result of calculation W are set up_aseWith embodiment 2.

In step F, set up energy parameter EP₂=W_as/W_Ase=0.94 ＜ 1, illustrate Sasobit warm-mixing agent to SK-90 Colophonium- The Adhering capacity of limestone two-phase system has Beneficial Effect.

Embodiment 8

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 7, Sasobit warm mix therein Agent changes RH warm-mixing agent into.

In step D, the surface free energy result of RH warm-mixing agent is with embodiment 3.

In step E, set up SK-90 matrix pitch-limestone two-phase system and SK-90 matrix pitch-limestone-RH warm mix Agent three-phase system, the work of adhesion W of SK-90 matrix pitch-limestone two-phase system_asWith embodiment 1, SK-90 matrix pitch-Calx The work of adhesion W of rock-RH warm-mixing agent three-phase system_aseResult of calculation is with embodiment 3.

In step F, set up energy parameter EP₂=W_as/W_ase=0.9 ＜ 1, illustrates that the interpolation of RH warm-mixing agent is to SK-90 substrate The adhesion property of Colophonium-limestone two-phase system has Beneficial Effect.

Embodiment 9

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 7, in step E, sets up SK-90 Matrix pitch-limestone-water three-phase system and SK-90 matrix pitch-limestone-water-Sasobit four phase system.

SK-90 matrix pitch, limestone, the surface free energy of Sasobit warm-mixing agent can obtain from embodiment above Arrive.

Therefore, in step E, the work of adhesion of SK-90 matrix pitch-limestone-water three-phase system can be calculated with implementing Example 1, W_asw=52.07mJ/m², the work of adhesion of SK-90 matrix pitch-limestone-water-Sasobit four phase system with embodiment 2, W_asew37.91mJ/m²。

Step F, sets up energy parameter EP₂=W_asw/W_asew=1.37 ＞ 1, illustrate Sasobit warm-mixing agent to bitumen-aggregate- The Adhering capacity of water three-phase system adversely affects.

Embodiment 10

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 9, Sasobit warm mix therein Agent changes RH warm-mixing agent into.

The surface free energy of RH warm-mixing agent can be known from embodiment above.

In step E, set up and calculate SK-90 matrix pitch-limestone-water three-phase system and SK-90 matrix pitch-Calx The work of adhesion of rock-water-RH warm-mixing agent four phase system, W_asw=52.07mJ/m², W_asew=45.76mJ/m²。

In step F, energy parameter EP₂=W_asw/W_asew=1.14 ＞ 1, illustrate the interpolation of RH warm-mixing agent to bitumen-aggregate- The Adhering capacity of water three-phase system adversely affects.

Embodiment 11

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 7, gathers materials and changes into from limestone Basalt, basaltic surface free energy can be known from embodiment 4.

In step F, energy parameter EP₂=56.08/57.46=0.98 ＜ 1, illustrates that Sasobit warm-mixing agent is to the present embodiment In the adhesion property of SK90 matrix pitch-basalt two-phase system have Beneficial Effect.

Embodiment 12

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 8, gathers materials and changes into from limestone Basalt, basaltic surface free energy can be known from embodiment 4.

In step F, energy parameter EP₂=56.08/62.10=0.9 ＜ 1, illustrates that RH warm-mixing agent is in the present embodiment The adhesion property of SK-90 matrix pitch-basalt two-phase system has Beneficial Effect.

Embodiment 13

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 9, gathers materials and changes into from limestone Basalt, basaltic surface free energy can be known from embodiment 4.

In step F, energy parameter EP₂=50.87/44.23=1.15 ＞ 1, illustrates that Sasobit warm-mixing agent is to the present embodiment In the adhesion property of SK-90 matrix pitch-basalt-water three-phase system adversely affect.

Embodiment 14

A kind of bitumen-aggregate interfacial adhesion performance measurement method, as different from Example 10, gathers materials and changes into from limestone Basalt, basaltic surface free energy can be known from embodiment 4.

In step F, energy parameter EP₂=50.87/48.55=1.05 ＞ 1, illustrates that RH warm-mixing agent is in the present embodiment The adhesion property of SK-90 matrix pitch-basalt-water three-phase system adversely affects.

Knowable to embodiment 7-14, under anhydrous conditions, after adding warm-mixing agent, EP₂Value is respectively less than 1, illustrates without watery Under state, warm-mixing agent is favorably improved the Adhering capacity of bitumen-aggregate；But under having water state, after adding warm-mixing agent, EP₂Value Being all higher than 1, illustrate under having water state, warm-mixing agent on the contrary can be unfavorable to the Adhering capacity of bitumen-aggregate；Sasobit warm-mixing agent More unfavorable on the impact of compound water stability than RH warm-mixing agent.

It should be noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although With reference to foregoing embodiments, the present invention is described in detail, it will be understood by those within the art that: it is still Technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is carried out Equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technical side The scope of case.

Claims (10)

1. an asphaltaggregate interfacial adhesion performance measurement method, it is characterised in that: it comprises the following steps:

A. selecting the test liquid of three kinds of known surface energy, these three test liquid does not dissolves in Colophonium；

B. by Colophonium, or, and additive is heated to flow regime, and water respectively on flat board, it is cooled into smooth plane；Will Gather materials and be polished into the smooth flat that two sides is parallel, clean and dry；

C. described three kinds of test liquids are dropped in step B medium pitch respectively, gather materials, or, and in the smooth flat of additive formation, And measure simultaneously three kinds of test liquids at Colophonium, gather materials, or, and the contact angle on additive surface；

D. according to the contact angle obtained in step C, calculate Colophonium, gather materials, or, and the surface energy of additive；

E. theoretical based on liquid, solid surface free energy, in conjunction with Gibbs Gibbs free, build respectively and stick mould under different system Type, and calculate its work of adhesion；

F. set up energy parameter, evaluate water or the additive impact on asphaltaggregate Adhering capacity according to described energy parameter； Described energy parameter relates to water or the work of adhesion of anhydrous two individual system simultaneously, or includes additive or additive-free two individual system Work of adhesion；

Described step enforcement order is A, B, C-F or B, A, C-F.

2. the assay method of warm-mixed asphalt aggregate Interface Adhesion property as claimed in claim 1, it is characterised in that: described glutinous Attached model is that asphaltaggregate two-phase system model is

$W_{as}=-{\mathrm{\ΔG}}_{as}=2(\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}+\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}+\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}}),$

Wherein, W_asRepresent the work of adhesion between asphaltaggregate, γ_a ^LW、γ_s ^LWRepresent respectively in Colophonium and the surface energy that gathers materials Nonpolar moiety, γ_a ⁺、γ_s ⁺Represent the acid action component in Colophonium and the surface energy that gathers materials, γ respectively_a ^-、γ_s ^-Represent respectively Alkaline action component in Colophonium and the surface energy that gathers materials.

3. warm-mixed asphalt aggregate Interface Adhesion property assay method as claimed in claim 1, it is characterised in that stick described in: Model is asphaltaggregate water three-phase system model W_asw=γ_aw+γ_sw-γ_as,

Wherein W_aswRepresent the work of adhesion between asphaltaggregate water, γ_awRepresent Colophonium and the interface energy on water engaging surface；γ_sw Represent and gather materials and the interface energy on water engaging surface, γ_asRepresent Colophonium and the interface energy on aggregate contact face.

4. warm-mixed asphalt aggregate Interface Adhesion property assay method as claimed in claim 1, it is characterised in that stick described in: Model is asphaltaggregate water three-phase system model:

$\begin{array}{c}{W}_{asw}=-(2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_w^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}\right)+2\sqrt{{\mathrm{\γ}}_w^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}\right)\\ -2{\mathrm{\γ}}_w^{LW}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}-4\sqrt{{\mathrm{\γ}}_w^{+}{\mathrm{\γ}}_w^{-}}-2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}-2\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_s^{+}})\end{array},$

Wherein, W_aswRepresent the work of adhesion between asphaltaggregate water, γ_a ^LW、γ_s ^LW、γ_w ^LWRepresent Colophonium respectively, gather materials and Nonpolar moiety in the surface energy of water, γ_a ⁺、γ_s ⁺、γ_w ⁺Represent Colophonium respectively, gather materials and acid work in the surface energy of water With composition, γ_a ^-、γ_s ^-、γ_w ^-Represent the alkaline action component in the surface energy of asphaltaggregate and water respectively.

5. warm-mixed asphalt aggregate Interface Adhesion property assay method as claimed in claim 1, it is characterised in that stick described in: Model is asphaltaggregate warm-mixing agent three-phase system model:

$W_{ase}=2(\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_e^{LW}}+\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_e^{-}}+\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_e^{+}}+\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_e^{LW}}+\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}{\mathrm{\γ}}_e^{+}}-{\mathrm{\γ}}_e^{LW}-\sqrt{{\mathrm{\γ}}_e^{+}{\mathrm{\γ}}_e^{-}}),$

Wherein, W_aseRepresent the work of adhesion between asphaltaggregate warm-mixing agent, γ_a ^LW、γ_s ^LW、γ_e ^LWRepresent Colophonium, collection respectively Nonpolar moiety in the surface energy of material and warm-mixing agent, γ_a ⁺、γ_s ⁺、γ_e ⁺Represent Colophonium respectively, gather materials and the surface of warm-mixing agent Acid action component in energy, γ_a ^-、γ_s ^-、γ_e ^-Represent that the alkalescence in the surface energy of asphaltaggregate and warm-mixing agent acts as respectively Point.

6. warm-mixed asphalt aggregate Interface Adhesion property assay method as claimed in claim 1, it is characterised in that stick described in: Model is asphaltaggregate warm-mixing agent water four phase system model:

$\begin{array}{c}{W}_{asew}=-(4\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_e^{LW}}+4\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_e^{LW}}-4\sqrt{{\mathrm{\γ}}_e^{LW}{\mathrm{\γ}}_w^{LW}}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_s^{LW}}-2\sqrt{{\mathrm{\γ}}_a^{LW}{\mathrm{\γ}}_w^{LW}}\\ -2\sqrt{{\mathrm{\γ}}_s^{LW}{\mathrm{\γ}}_w^{LW}}+2\sqrt{{\mathrm{\γ}}_e^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}\right)+2\sqrt{{\mathrm{\γ}}_e^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}\right)\\ -2\sqrt{{\mathrm{\γ}}_w^{+}}\left(\sqrt{{\mathrm{\γ}}_a^{-}}+\sqrt{{\mathrm{\γ}}_s^{-}}+2\sqrt{{\mathrm{\γ}}_e^{-}}\right)-2\sqrt{{\mathrm{\γ}}_w^{-}}\left(\sqrt{{\mathrm{\γ}}_a^{+}}+\sqrt{{\mathrm{\γ}}_s^{+}}+2\sqrt{{\mathrm{\γ}}_e^{+}}\right)+2{\mathrm{\γ}}_w^{LW}\\ -2{\mathrm{\γ}}_e^{LW}+4\sqrt{{\mathrm{\γ}}_w^{+}{v}_w^{-}}-4\sqrt{{\mathrm{\γ}}_e^{+}{\mathrm{\γ}}_e^{-}}-2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_s^{-}}\\ -2\sqrt{{\mathrm{\γ}}_a^{-}{v}_s^{+}}+2\sqrt{{\mathrm{\γ}}_a^{+}{\mathrm{\γ}}_e^{-}}+2\sqrt{{\mathrm{\γ}}_a^{-}{\mathrm{\γ}}_e^{+}}+2\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}}+2\sqrt{{\mathrm{\γ}}_s^{+}{\mathrm{\γ}}_e^{-}})\end{array},$

Wherein, W_asewRepresent the work of adhesion between asphaltaggregate warm-mixing agent water, γ_a ^LW、γ_s ^LW、γ_e ^LW、γ_w ^LWTable respectively Show Colophonium, gather materials, nonpolar moiety in the surface energy of warm-mixing agent and water, γ_a ⁺、γ_s ⁺、γ_e ⁺、γ_w ⁺Represent Colophonium, collection respectively Acid action component in the surface energy of material, warm-mixing agent and water, γ_a ^-、γ_s ^-、γ_e ^-、γ_w ^-Represent respectively Colophonium, gather materials, warm mix Alkaline action component in the surface energy of agent and water.

7. warm-mixed asphalt aggregate Interface Adhesion property assay method as claimed in claim 1, it is characterised in that: described energy Parameter is EP₁=W_as/W_aswOr EP₁=W_ase/W_asew。

8. warm-mixed asphalt aggregate Interface Adhesion property assay method as claimed in claim 7, it is characterised in that: work as EP₁＞ 1 Time, represent that the Adhering capacity of asphaltaggregate two-phase system or asphaltaggregate warm-mixing agent three-phase system is preferable；Work as EP₁=1 Time, represent that the Adhesion property of asphaltaggregate two-phase system or asphaltaggregate warm-mixing agent three-phase system is affected little by water； Work as EP₁During ＜ 1, represent that the Adhering capacity of asphaltaggregate two-phase system or asphaltaggregate warm-mixing agent three-phase system is had by water Large effect.

9. warm-mixed asphalt aggregate Interface Adhesion property assay method as claimed in claim 1, it is characterised in that: described energy Parameter is EP₂=W_as/W_aseOr W_asw/W_asew。

10. warm-mixed asphalt aggregate Interface Adhesion property assay method as claimed in claim 9, it is characterised in that: work as EP₂＞ 1 Time, represent that warm-mixing agent has unfavorable shadow to the Adhering capacity of asphaltaggregate two-phase system or asphaltaggregate water three-phase system Ring；Work as EP₂When=1, represent that warm-mixing agent is to asphaltaggregate two-phase system or the adhesion of asphaltaggregate water three-phase system Can affect little；Work as EP₂During ＜ 1, represent that warm-mixing agent is to asphaltaggregate two-phase system or asphaltaggregate warm-mixing agent three-phase The Adhering capacity of system has Beneficial Effect.