Statewide Implementation of the Surface Performance-graded (SPG) Specification for Seal Coat Binders in Service Products -P1, -P4, & -P5 PDF Download

Author:
Publisher:
ISBN:
Category : Binders (Materials)
Languages : en
Pages : 0

View

Book Description
This project includes three documents. (1) Seal Coat Binder Performance Specifications, 87th Annual Transportation Short Course, October 2013, 3p., PowerPoint slides covering objective, history, recommended Surface Performance Grading (SPG) specification, and implementation project. (2) SPG Specification for 2015 Implementation, 8p. (3) Texas Seal Coat Binder Utilization maps for 2013 and 2014, 4p.

Author: Amy Epps Martin
Publisher:
ISBN:
Category : Binders (Materials)
Languages : en
Pages : 0

View

Book Description
Over the past almost 20 years, a Surface Performance-Graded (SPG) specification for chip seal binders was developed and validated using laboratory measurements and visual field performance of 141 highway sections. This SPG specification was established in an effort to extend the service life of chip seals and save approximately $9 million per year by providing a binder grading system and associated selection guidelines that: (1) accounts for differences in climate and (2) uses existing equipment and performance-based properties that preclude bleeding and aggregate loss in the critical first year of service after construction. This report documents a multi-year implementation effort that includes: (1) further validation and (2) industry interaction including outreach, state round robin testing programs, laboratory characterization efforts with private laboratories, and associated work with a national task force. The SPG specification now available as a special provision to Texas Department of Transportation (TxDOT) Item 300 (SP 300-011) will replace the TxDOT Chip Seal Binder Material Selection Table with the tiered system and conventional chip seal binder specifications for materials in service provided in TxDOT Item 300.

Author: Shi Chang
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description
Over the past 15 years, a surface performance-graded (SPG) specification for chip seal binders was developed by the Texas Department of Transportation (TxDOT) using laboratory measurements and visual field performance (aggregate loss and bleeding) of 75 highway sections (HSs). The SPG was established in an effort to extend the service life of chip seals by providing a binder selection method that accounts for differences in climate. TxDOT recently commenced a statewide implementation effort of the SPG specification. The initial activities include (a) reviewing laboratory and field performance of HSs built in 2011 based on the latest version of the SPG specification, newly generated SPG requirement map, and revised surface condition index calculation; (b) characterizing binders from HSs built in 2013 and monitoring their field performance; (c) proposing additional parameters to complement the SPG specification; and (d) predicting bending beam rheometer (BBR) creep stiffness values from frequency sweep results. When comparing the expected performance of the binders (based on their SPG grade) against actual field performance after the first year in service, 80 percent of the HSs built in 2011 correlated well. Individual SPG properties were compared to corresponding field performance for 2013 chip seal binders in terms of aggregate loss or bleeding. Unexpected field performance from the Amarillo District largely contributed to poor correlation between the BBR creep stiffness properties and field performance in terms of aggregate loss for 2013 HSs. A phase angle parameter was introduced in the SPG specification to ensure modified binders contain sufficient polymers. The prediction of BBR creep stiffness values via a frequency sweep test was not reliable at colder temperatures, even when a 4-mm dynamic shear rheometer plate test was used. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155717

Author: Ariel Tenenbaum
Publisher:
ISBN: 9781536179699
Category : Medical
Languages : en
Pages : 245

View

Book Description
"Much research has been conducted to provide researchers and hearing healthcare professionals with updated information in regard to hearing assessments, results interpretation and case management. This ongoing research is particularly imperative to guide clinicians with optimized methods in assessing and managing pediatric patients with hearing impairment and disability. As such, tremendous research efforts have been made in determining the most optimum methods in assessing hearing using both subjective and objective tests. Since hearing loss can occur due to disrupted peripheral and/or central auditory pathway, there is also a growing interest to study children with auditory processing disorder (APD). Even though notable achievements have been observed in understanding APD, more research is required, particularly in establishing a gold standard APD test and its specific interventions. Aditionally, having an objective test such as speech-evoked auditory brainstem response is beneficial to understand how speech sounds are encoded within the brainstem region in hearing-impaired children, as well as in those with compromised neural function. In this book, we have gathered research from Malaysia and India in this field and hope it will be of interest to our readers"--

Author: Bernie Badegruber
Publisher: Turner Publishing Company
ISBN: 089793590X
Category : Family & Relationships
Languages : en
Pages : 247

View

Book Description
How do you teach tolerance, self-awareness, and responsibility? How can you help children deal with fear, mistrust, or aggression? Play a game with them! Games are an ideal way to help children develop social and emotional skills; they are exciting, relaxing, and fun. 101 LIFE SKILLS GAMES FOR CHILDREN: LEARNING, GROWING, GETTING ALONG (Ages 6-12) is a resource that can help children understand and deal with problems that arise in daily interactions with other children and adults. These games help children develop social and emotional skills and enhance self-awareness. The games address the following issues: dependence, aggression, fear, resentment, disability, accusations, boasting, honesty, flexibility, patience, secrets, conscience, inhibitions, stereotypes, noise, lying, performance, closeness, weaknesses, self confidence, fun, reassurance, love, respect, integrating a new classmate, group conflict. Organized in three main chapters: (I-Games, You-Games and We-Games), the book is well structured and easily accessible. It specifies an objective for every game, gives step-by-step instructions, and offers questions for reflection. It provides possible variations for each game, examples, tips, and ideas for role plays. Each game contains references to appropriate follow-up games and is illustrated with charming drawings.

Author: Rigby
Publisher:
ISBN: 9781418914219
Category :
Languages : en
Pages : 0

View

Book Description

Author: Chretien de Troyes
Publisher: Yale University Press
ISBN: 0300038380
Category : Poetry
Languages : en
Pages : 244

View

Book Description
A twelfth-century poem by the creator of the Arthurian romance describes the courageous exploits and triumphs of a brave lord who tries to win back his deserted wife's love

Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 670

View

Book Description

Author: Frances Harrison Marr
Publisher:
ISBN:
Category : Christian poetry, American
Languages : en
Pages : 194

View

Book Description

Author: Sampson Ejike Odum
Publisher: iUniverse
ISBN: 1663205043
Category : Fiction
Languages : en
Pages : 123

View

Book Description
‘KUMBA AFRICA’, is a compilation of African Short Stories written as fiction by Sampson Ejike Odum, nostalgically taking our memory back several thousands of years ago in Africa, reminding us about our past heritage. It digs deep into the traditional life style of the Africans of old, their beliefs, their leadership, their courage, their culture, their wars, their defeat and their victories long before the emergence of the white man on the soil of Africa. As a talented writer of rich resource and superior creativity, armed with in-depth knowledge of different cultures and traditions in Africa, the Author throws light on the rich cultural heritage of the people of Africa when civilization was yet unknown to the people. The book reminds the readers that the Africans of old kept their pride and still enjoyed their own lives. They celebrated victories when wars were won, enjoyed their New yam festivals and villages engaged themselves in seasonal wrestling contest etc; Early morning during harmattan season, they gathered firewood and made fire inside their small huts to hit up their bodies from the chilling cold of the harmattan. That was the Africa of old we will always remember. In Africa today, the story have changed. The people now enjoy civilized cultures made possible by the influence of the white man through his scientific and technological process. Yet there are some uncivilized places in Africa whose people haven’t tested or felt the impact of civilization. These people still maintain their ancient traditions and culture. In everything, we believe that days when people paraded barefooted in Africa to the swarmp to tap palm wine and fetch firewood from there farms are almost fading away. The huts are now gradually been replaced with houses built of blocks and beautiful roofs. Thanks to modern civilization. Donkeys and camels are no longer used for carrying heavy loads for merchants. They are now been replaced by heavy trucks and lorries. African traditional methods of healing are now been substituted by hospitals. In all these, I will always love and remember Africa, the home of my birth and must respect her cultures and traditions as an AFRICAN AUTHOR.