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Home > Publications > International Concrete Abstracts Portal
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.
Showing 1-5 of 14 Abstracts search results
Document:
SP14-05
Date:
March 1, 1978
Author(s):
John C. Fredericks, N. R. Saunders, and John T. Broadfoot
Publication:
Symposium Papers
Volume:
14
Abstract:
Describes recent development of two entirely different types of positive displacement pumps which make it possible to convey and success-fully apply wet-mix shotcrete at 1/2- to 2-in. slump. Details of mixes used with both the squeeze pump and the piston pump are given.
DOI:
10.14359/6805
SP14-13
Albert Litvin and Joseph J. Shideler
Several contractors and equipment manufacturers gunned test panels of both wet-and dry-process shotcretes and shipped them to the laboratory for testing. Commercial testing laboratories also sampled the freshly gunned material at the fabrication site and determined mix proportions, unit weight, air content, and gradation of the aggregate. Other mixes with a wider range of mix proportions, water-cement ratios, and aggregate size were gunned and tested in the laboratory. Data on compressive strength, modulus of elasticity, drying shrink-age, creep, absorption, resistance to freezing and thawing, and water permeability for the various samples are reported.
10.14359/6813
SP14-06
Paul J. Fluss and Glenn E. Gibson
Piers and wharves built from 1915 to 1917 in the San Francisco harbor were recently repaired with dry-mix shotcrete. Sequence and method of work-much of it within the tidal range of San Francisco Bay- are described. Asphaltic curing and coating materials were applied after shotcreting to prolong the life of material in the splash zone. Quality control specimens were cored from shotcreted test panels.
10.14359/6806
SP14
Editor: Thomas J. Reading
SP14 This classic collection of 13 papers on shotcreting has been reprinted. Prepared as a guide for both field personnel who apply shotcrete as well as for engineers who specify its use, Shotcreting presents data on engineering properties of both dry-mix and wet-mix shotcrete made with coarse and lightweight aggregates as well as sand. Quality control methods and preparation of test specimens are discussed. Equipment capabilities are covered in detail. Shotcrete for repairs, use of shotcrete in tunnel linings and other underground support, shotcrete tanks, lightweight shotcrete, and the gunning of refractory castables receive attention. Includes William R. Lorman's Engineering Properties of Shotcrete Lorman's report supplements data on current practice in shotcreting with a review of the past 55 years of laboratory and field experience with pneumatically applied mortars and concretes. Emphasizes data on strength, elasticity and other physical properties of the hardened shotcrete. Compares properties of fine-aggregate shotcrete and coarse aggregate shotcrete and presents recommendations for mixing and testing methods.
This classic collection of 13 papers on shotcreting has been reprinted. Prepared as a guide for both field personnel who apply shotcrete as well as for engineers who specify its use, Shotcreting presents data on engineering properties of both dry-mix and wet-mix shotcrete made with coarse and lightweight aggregates as well as sand. Quality control methods and preparation of test specimens are discussed. Equipment capabilities are covered in detail. Shotcrete for repairs, use of shotcrete in tunnel linings and other underground support, shotcrete tanks, lightweight shotcrete, and the gunning of refractory castables receive attention.
Includes William R. Lorman's Engineering Properties of Shotcrete
Lorman's report supplements data on current practice in shotcreting with a review of the past 55 years of laboratory and field experience with pneumatically applied mortars and concretes. Emphasizes data on strength, elasticity and other physical properties of the hardened shotcrete. Compares properties of fine-aggregate shotcrete and coarse aggregate shotcrete and presents recommendations for mixing and testing methods.
10.14359/14066
SP14-12
Stanley G. Zynda
Proportions of shotcrete mortar as mixed are compared with proportions of the mix in place. Effect of nozzle velocity on density of the in-place material is explained. Data on unit weight and compressive strength of various mixes are given, noting how test results based on shot cylinders differ from strength tests of cores from actual structural applications. Total water content for any given com-bination of shotcrete mortar materials is constant regardless of mix proportions, provided that the material is placed at the wettest stable consistency-the point of incipient sag. Maximum density in any mix occurs at this water content; hence it is also the point of maximum compressive strength.
10.14359/6812
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