Reasonable crack widths for reinforced concrete under service loads are listed in Table 4.1 of ACI 224R-01. However, a footnote warns that, with time, “a significant portion” of the cracks in a …

While evaluating a concrete structure, accurate determination of crack widths will help in identifying the possible causes and, if needed, repair methods for cracks.

Long-term effects on cracking are considered and crack-control procedures used in construction are pre-sented. Information is presented to assist in the development of practical and effective …

For crack widths 0.010 in. (0.3 mm) or smaller, use a low-viscosity epoxy (500 cps or less). For wider cracks, or where injection access is limited to one side, a medium to gel viscosity …

Since 1971, the ACI Building Code has required control of flexural cracking in reinforced concrete structures through the method.1 use of the z-factor The z-factor approach is a modified form of …

Design methods are given for unreinforced concrete, reinforced concrete, shrinkage-compensating concrete, post-tensioned concrete, fiber-reinforced concrete slabs-on-ground, …

The results are that crack widths are reduced, and the ultimate tensile cracking strain capacity of the concrete is increased. The mechanical bond between the embedded fiber and binder …

The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational …

the prediction of cracking in hardened concrete. This theory is shown to be a logical development of earlier theories, and is based on the extensive re- search program carried out at the Cement …

Guidance on tolerable crack widths in concrete structures is presented in reports from ACI Committee 224, Cracking.1-3 While these documents were developed for cracking in new …