Laboratory Mix Design Procedure for Foamed Bitumen Mixtures

2014 ◽  
Vol 2444 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Kranthi Kuna ◽  
Gordon Airey ◽  
Nick Thom
Keyword(s):  
Design Procedure ◽  
Mix Design ◽  
Foamed Bitumen

scholarly journals Delivering Sustainable Solutions through Improved Mix and Structural Design Functions for Bitumen Stabilised Materials

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
K. J. Jenkins ◽  
C. E. Rudman ◽  
C. R. Bierman
Keyword(s):  
Structural Design ◽  
Best Practice ◽  
Design Method ◽  
Design Procedure ◽  
Design Methods ◽  
Mix Design ◽  
Sustainable Solutions ◽  
Bitumen Emulsion ◽  
Design Function ◽  
Foamed Bitumen

The evolution of cold recycling using bitumen stabilisation technology has been supported by progressive research initiatives and best practice guidelines. The first generic guidelines for bitumen stabilised materials (BSMs) were published only in 2002. These guidelines provided a generic approach for the analysis of foamed bitumen and bitumen emulsion technologies. From that point, bitumen stabilisation became the common term for the inclusion of either of the two bituminous binders. The TG2 2nd edition guideline of 2009 took a bold step recognising the shear properties of the bitumen stabilised material (BSM) as the key performance indicators. In addition, advancements in structural design and application of BSMs provided practitioners with robust guidelines. The subsequent decade has provided an opportunity to interrogate data from more than 300 BSM mix designs and 69 LTPP sections. The data have led to research developments including significant new performance properties of BSMs, refined mix design methods, and updated new pavement design methods. This includes an entire design process that has been updated with a streamlined mix design procedure and a new frontier curve for the pavement number design method, as well as a new mechanistic design function. It is anticipated that the research findings and implementation of the newly developed technology will lead to improved application in BSM technology.

A mix design procedure for geopolymer concrete with fly ash

2016 ◽  
Vol 133 ◽  
pp. 117-125 ◽  
Author(s):  
P. Pavithra ◽  
M. Srinivasula Reddy ◽  
Pasla Dinakar ◽  
B. Hanumantha Rao ◽  
B.K. Satpathy ◽  
...  
Keyword(s):  
Fly Ash ◽  
Design Procedure ◽  
Mix Design ◽  
Geopolymer Concrete

Refinement of New-Generation Open-Graded Friction Course Mix Design

2003 ◽  
Vol 1832 (1) ◽  
pp. 78-85 ◽  
Author(s):  
Donald E. Watson ◽  
Kathryn Ann Moore ◽  
Kevin Williams ◽  
L. Allen Cooley
Keyword(s):  
United States ◽  
Design Procedure ◽  
The United States ◽  
Mix Design ◽  
Superpave Gyratory Compactor ◽  
Open Graded Friction Course ◽  
Compactive Effort ◽  
And Performance ◽  
New Generation ◽  
Air Void

Open-graded friction course (OGFC) has been used in the United States for more than 50 years. In 2000, National Center for Asphalt Technology (NCAT) research led to a recommended mix design procedure for a new-generation OGFC, but the work involved only one aggregate source. Therefore, NCAT is in the process of refining this design procedure to ensure that it is applicable to other aggregate types used in surface mixes throughout the United States. The objectives of NCAT's current research are to refine and field validate the new-generation OGFC mix design procedure. This work has led to several experiments. Several objectives have been identified that need to be addressed. Superpave® technology and use of the Superpave gyratory compactor (SGC) need to be incorporated into the mix design procedure. The Cantabro test for durability and resistance to stone loss needs to be adapted to SGC-prepared specimens and performance parameters established. The asphalt draindown test (AASHTO T 305-97), which was developed for stone-matrix asphalt mixtures, also needs to be evaluated for applicability to OGFC mixtures. In addition, a method for effectively evaluating air void criteria needs to be investigated. On the basis of the research conducted in this study, 50 gyrations of the SGC was selected as the design compactive effort during mix design. Also, the use of SGC-prepared samples during the Cantabro test appears to be a reasonable alternative to use of Marshall-compacted samples.

scholarly journals The influence of binder rheological properties on asphalt mixture permanent deformation

2015 ◽  
Vol 10 (1) ◽  
pp. 54-60 ◽  
Author(s):  
Marcin Gajewski ◽  
Dariusz Sybilski ◽  
Wojciech Bańkowski
Keyword(s):  
Permanent Deformation ◽  
Test Procedure ◽  
Asphalt Mixture ◽  
Design Procedure ◽  
Mix Design ◽  
Creep Recovery ◽  
Quality Prediction ◽  
Simple Test ◽  
Bituminous Mixture ◽  
Shear Creep

The main goal of this paper is to propose the performance parameter for binder which is good for quality prediction of asphalt mixture in frame of resistance to permanent deformation (rutting). Additionally, correlation between, proposed by the authors, repeatable shear creep-recovery test carried out on binder and bituminous mixture rutting test is under evaluation. The results are analysed and correlation between the proposed functional parameter and rut depth is shown. Thanks to that it is possible to claim that expensive rutting test procedure can be assisted with simple test carried out in dynamic shear rheometer at the initial mix design procedure.

scholarly journals Predict of Asphalt Rutting Potential Based on IDT and Validation with ANN

2019 ◽  
Vol 9 (2) ◽  
pp. 131-138
Author(s):  
Hassan Divandari
Keyword(s):  
Low Cost ◽  
Permanent Deformation ◽  
Design Procedure ◽  
Mix Design ◽  
Test Results ◽  
Simple Test ◽  
Short Term ◽  
Time Saving ◽  
Simple Method ◽  
Main Method

Abstract Rutting occurs due to accumulation of incrementally small permanent deformations from each load application and it can cause irreparable problems in pavements. On the other hand, the Marshall Mix design which is known as the main method in Iran, the lack of a simple test to determine specimen resistance to permanent deformation as the major reason for asphalt rutting is noticeable. Although today many devices are used for rutting measurement, none of them have the ability to use in wider field. In addition, prevalent methods of evaluating rutting potential are usually costly and time consuming. Mentioned parameters illustrate the necessity of developing a simple method, not only having fine precision, but also are able to predict rutting performance with low cost in the short term in laboratory. In this research, after performing the main tests on specimens, IDT test results and Marshall Parameters were used to develop a mathematical model to estimate specimen rut depth. The model is validated by using ANN and makes it possible to evaluate mixtures rutting potential while OBC is being determined in laboratory. So not only is there no need to use expensive instruments of rutting test, but also a remarkable time saving in mix design procedure is achievable.

EFFECT OF BASECOURSE AGGREGATE PROPERTIES ON STRENGTH OF FOAMED BITUMEN STABILIZED MATERIALS

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Hossein Askarinejad ◽  
Anastasiya Naruzberg ◽  
Bryan Pidwerbesky
Keyword(s):  
Fine Particles ◽  
Mix Design ◽  
Design Data ◽  
Aggregate Properties ◽  
Milling Operation ◽  
Bitumen Content ◽  
Indirect Tensile ◽  
Road Performance ◽  
Foamed Bitumen

Foamed Bitumen Stabilization (FBS) is a treatment for strengthening pavements and improving road performance, either on newly constructed or existing roads. The FBS within pavements is typically used in the basecourse layer, where the basecourse material is mixed with cement, bitumen, and water through a milling operation on site. The performance of the Foamed Bitumen Stabilized basecourse can be highly affected by various parameters such as the cement content, bitumen content, the quality of the operation as well as the basecourse aggregate characteristics. In this research, a collection of existing historical FBS mix design data from New Zealand roads are analyzed. The Indirect Tensile Strength (ITS) of the FBS material made of aggregate sourced from two different regions are compared. The results show that the aggregate percentage of fine particles and the plasticity index contributes to the final strength of FBS material. The obtained results are valuable towards optimizing the FBS mix design based on the basecourse aggregate properties.

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