ACI Global Home Middle East Region Portal Western Europe Region Portal
Email Address is required Invalid Email Address
In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Learn More
Become an ACI Member
Topics In Concrete
Home > Publications > International Concrete Abstracts Portal
Showing 1-5 of 5 Abstracts search results
Document:
CI4603WomeninACI
Date:
March 1, 2024
Author(s):
Lacey J. Stachel
Publication:
Concrete International
Volume:
46
Issue:
3
Abstract:
The Women in ACI (WACI) networking event is a long-standing tradition that is now well attended by all demographics at ACI Concrete Conventions. What started as a small gathering comprised of trailblazing women who made this event what it is today will celebrate its 30th anniversary at the Spring 2024 ACI Convention in New Orleans, LA, USA.
CI4010Q&A
October 1, 2018
Jim Bohn
40
10
Abstract: I have a few questions regarding the OSHA silica dust regulations: What is the proper disposal procedure for concrete dust we have collected in a vacuum cleaner (dust extractor)? Should full dust collection bags be placed in a special container, separate from a regular dumpster? What should be used to collect dust generated in constricted work areas where a dust suction attachment will not fit? If dust is coming into a work area from surrounding areas, how can it be distinguished from the dust generated by cutting or grinding operations? Can dust collection attachments from one manufacturer be used with tools from a different manufacturer? Is there a limit on length of a vacuum hose?
Abstract: I have a few questions regarding the OSHA silica dust regulations:
SP122-05
June 1, 1990
Tel Rezansoff and Dan Stott
Symposium Papers
122
The relative durability of air-entrained concrete with and without boiled linseed oil coating was evaluated using the rapid freeze-thaw method of ASTM C 666, Procedure A, by measuring the reduction in dynamic modulus and weight loss of the test prisms. Surface scaling was also monitored visually. The richness of the mix was varied by using cement factors of 267 kg/m3 (450 lb/yd3) and 300 kg/m3 (506 lb/yd3). Freeze-thaw durability was reduced in some test prisms of the richer mix through the addition of a chloride-based setting and strength accelerator. Curing prior to freeze-thaw cycling was varied in the lean mix. Prisms were either water-cured for 2 weeks prior to coating with linseed oil before testing, or were coated with linseed oil after removal from molds at 24 hr and then cured under ambient low humidity before freeze-thaw testing at 2 weeks. Uncoated specimens that were water-cured for 2 weeks prior to freeze-thaw cycling served as the control. The use of undiluted linseed oil proved to be superior to using a 50 percent Varsol-50 percent boiled linseed oil mixture, contrary to what was expected. Mixes proved to be quite durable except for the mix in the third series, in which the chloride-based accelerator reduced the freeze-thaw resistance below acceptable limits. The use of a linseed oil coating provided some, though insufficient, improvement in the durability of this mix.
DOI:
10.14359/2466
SP94-56
July 1, 1987
J. Bugler
94
This paper describes field application problems experienced during the execution of a joint resealing program initiated within the limits of Region 10 (Nassau and Sufflok Counties) in the early 1980s. It describes what was done to overcome these problems. Solutions to such problems involved equipment modification and improved inspection technique. These modifications resulted in the virtual elimination of joint overfilling and a ten-fold performance improvement with regards to first-year intermittent bond adhesion failure. Worker safety and protection are discussed.
10.14359/3767
CI0205Coghlan
May 1, 1980
G. T. Coghlan and A. Vanderpoel
2
5
The Vesuvius Dam concrete spillway experienced progressive deterioration. Completed in 1939, minor repairs were made in 1949, 1955, and 1964. Cracking, spalling, raveling of rock pockets, and efflorescence continued. In 1977, it was determined that repairs were needed to preserve the structural integrity. An end-product specification was prepared permitting prospective contractor to propose the re and method. The low bidder proposed mixed pneumatically applied mortar or Quality, economical repair of the spillway ed using the shotcrete. Smooth finish of repairs I than 3 ft (1 m) square indicated the need for removal and minimum form work. A final cleanin preservative surface treatment of linseed somewhat emphasized the repair areas. Where face treatments are intended for cosmetic effec well as weather proofing, trial applications might establish an effective application rate.
Results Per Page 5 10 15 20 25 50 100
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.