REACT: Reducing Early-Age Cracking Today

نویسندگان

  • Dale P. Bentz
  • Jason Weiss
چکیده

Concrete is generally viewed as a durable and long-lasting construction material. However, the long-term performance of a concrete structure can be greatly compromised by early-age cracking. One recent informal estimate from the industry places this as a $500 million problem in the U.S. alone, with some ready-mix companies experiencing early-age issues on as many as 70 % of their jobs. As is often the case, as a problem intensifies, mitigation strategies are developed and promoted from the research laboratory to the field. This paper will briefly review the most common non-structural causes of early-age cracking and present an introduction to various mitigation strategies. These strategies are being further investigated as part of a newly formed university/industry/government collaboration under the acronym of REACT: Reducing Early-Age Cracking Today.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Economical Mixtures to Reduce Both Thermal and Autogenous Shrinkage Contributions to Early-Age Cracking

Early-age cracking continues to be a significant problem for new concrete construction. Two of the major contributors to such cracking are the heat released by cement hydration during the first few days of curing and the autogenous shrinkage that often occurs during the same timeframe. In this paper, three potential alternatives for reducing these contributions by modifying the concrete mixture...

متن کامل

Lattice Modeling of Early-Age Behavior of Structural Concrete

The susceptibility of structural concrete to early-age cracking depends on material composition, methods of processing, structural boundary conditions, and a variety of environmental factors. Computational modeling offers a means for identifying primary factors and strategies for reducing cracking potential. Herein, lattice models are shown to be adept at simulating the thermal-hygral-mechanica...

متن کامل

Early-age strain–stress relationship and cracking behavior of slag cement mixtures subject to constant uniaxial restraint

In this study, the early-age strain–stress development of mixtures containing slag cement was measured on uniaxially restrained specimens using a specially designed testing frame starting right after casting. It was found that thermal deformation dominates early-age stress development in low w/cm and low slag cement paste systems. While for concrete, autogenous shrinkage is the major contributi...

متن کامل

Early Age Shrinkage Behavior of Triple Blend Concrete

The early age shrinkage is responsible for the early age cracking of concrete. It is very critical for durability of concrete. The change in volume of concrete due to evaporation of water or dehydration process is known as shrinkage. To reduce the early age shrinkage utilized the supplementary cementitious material (SCM) in concrete. In present research industrial and agricultural waste byprodu...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008