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Keywords: strength
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Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. June 2003, 25(1): 1–6.
Published Online: June 1, 2003
..., and silicate-ester grouts, and it has been found that FGPC has better flow properties and bleed characteristics than OPC. Furthermore, its permeation into medium- to coarse-grained sand is as effective as silicate-ester grout and the strength of the sand gained by the injection of FGPC is higher than...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. June 2003, 25(1): 1–7.
Published Online: June 1, 2003
... of compressive strength over a period of about 18 months exposure to fog-room conditions, room temperature Na 2 SO 4 solution or 40°C water bath. None of the concrete samples made with the 3-types of Portland-based cementitious material showed distress due to sulfate attack. The concrete made with HAC and which...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. December 2000, 22(2): 128–132.
Published Online: December 1, 2000
...NQ Feng; YX Shi; JT Ding Ultrafine phosphorus slag (UFPS) with surface area greater than 6000 cm 2 /g is a vitreous powder similar to granulated blast-furnace slag (GBFS). The comparative investigation of UFPS and GBFS in this paper showed that UFPS could improve the fluidity, strength...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. June 2000, 22(1): 1–9.
Published Online: June 1, 2000
...SA Shihata Appropriate compaction is essential in producing roller-compacted concrete (RCC). An experimental program was conducted to study the effect of compaction on the strength and den-sity of RCC specimens. Compaction was achieved by tamping the sample with a hammer similar to that of ASTM D...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. December 1999, 21(2): 105–110.
Published Online: December 1, 1999
... durability fly ash pozzolan strength References ACI Committee 232 , 1996 , Use of Fly Ash in Concrete , American Concrete Institute , Detroit . Aïtcin , P. C. , Autefage , F. , Carles-Gibergues , A. , and Vaquier , A. , 1986 , “ Comparative Study of the Cementitious...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. December 1997, 19(2): 112–115.
Published Online: December 1, 1997
..., especially that which is not obtained from a simple test of strength. Fracture mechanics provides a measure of toughness, the extent to which a material can undergo deformation without fracturing. For a linear elastic material, the measurement and interpretation of fracture toughness is fairly...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. December 1996, 18(2): 98–111.
Published Online: December 1, 1996
...R Helmuth Modified Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use as a Mineral Admixture in Portland-Cement Concrete (ASTM C 311) Pozzolanic (Strength) Activity Index tests with five fly ashes and two portland cements were done to compare results with those of standard...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. June 1996, 18(1): 42–48.
Published Online: June 1, 1996
...K Komlos; S Popovics; T Nurnbergerova; B Babal; JS Popovics The essence of the pulse velocity method is that the transition time of an ultrasonic longitudinal pulse (wave) is measured in concrete. From this, the pulse velocity can be calculated, and inferences are drawn concerning the strength...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. December 1995, 17(2): 119–125.
Published Online: December 1, 1995
... strength, type of tiles, and ratio of volume of crushed tile to the total volume of coarse aggregate in concrete. Recommendations for use of crushed tile as coarse aggregates in concrete are given. Ali R. Khaloo 1 Crushed Tile Coarse Aggregate Concrete REFERENCE: Khaloo, A. R., "Crushed Tile Coarse...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. December 1994, 16(2): 104–109.
Published Online: December 1, 1994
...SG Shashiprakash; TS Nagaraj; S Raviraj; BV Yenagi The accumulation of fly ash throughout the world is several million tons per day. The main problem with the usage of fly ash is the slow rate of strength gain, primarily due to slow pozzolanic reactions. Existing methods of proportioning fly ash...
Journal Articles
Publisher: ASTM International
Article Type: Technical Notes
Cement, Concrete & Aggregates. December 1994, 16(2): 181–185.
Published Online: December 1, 1994
... with compressive strengths of core tests. The rebound hammer/core correlation formed the basis of a recommendation on the acceptance or rejection of the in-situ concrete. The ultrasonic pulse velocity UPV testing was primarily used to establish concrete uniformity. Limited freeze-thaw testing was carried out...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. December 1994, 16(2): 110–114.
Published Online: December 1, 1994
...JE Gillott; B Czarnecki Concrete cured by the accelerated steam method, at atmospheric pressure, sometimes shows a reduced rate of strength gain at later ages. This loss of potential strength has been attributed to a number of factors, including microcracking caused by differential stress within...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. July 1993, 15(1): 14–23.
Published Online: July 1, 1993
...% by weight. Effects on strength development, modulus of elasticity, and durability of subsequent storage regimes are presented. A nonsuperplasticized mixture designed for use in precast pre-stressed concrete providing 31 MPa (4500 psi) release strength after heat curing and 41 MPa (6000 psi) at the age of 28...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. January 1993, 15(2): 128–134.
Published Online: January 1, 1993
...RL Day This paper reports on a statistical analysis of a large database of mortar-cube strengths from Canadian cement plants. The objective of the analysis was to provide summary data for decisions to be made concerning performance specifications for Canadian Standard CAN/CSA-A5 on portland cement...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. July 1992, 14(1): 3–7.
Published Online: July 1, 1992
... on the flexural strength (modulus of rupture) and toughness of the two composites. Three fiber lengths of 30, 50, and 60 mm were incorporated in this study. Their aspect ratios were: 100 ( l = 50 mm, φ = 0.5 mm), 75 ( l = 60 mm, φ = 0.8 mm), and 60 ( l = 30 mm, φ = 0.5 mm). Three fiber contents, namely 50, 100...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. July 1991, 13(1): 11–17.
Published Online: July 1, 1991
... described in ASTM C 457, which is a microscopical procedure. The unit weight and compressive strength of the concretes were also determined. The results show that, at the ranges commonly used in the construction of pavements and bridges, the air content of fresh concrete measured by pressure meters...
Journal Articles
Publisher: ASTM International
Article Type: Technical Notes
Cement, Concrete & Aggregates. January 1991, 13(2): 125–129.
Published Online: January 1, 1991
...M Mittelacher Test results from four major Florida projects were reviewed for effects of set-retarder use on maintaining slump and strength of concrete held in the mixer for extended time periods in hot weather conditions. Admixtures included ASTM Specification for Chemical Admixtures for Concrete...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. January 1989, 11(2): 92–99.
Published Online: January 1, 1989
...,strength, sulfate attack, cement mortars Sulfate attack of cement mortar and concrete has been studied for several decades. It is commonly believed that sulfate attack of portland cement pastes is caused by chemical reactions between cement ingredients and sulfate ions from various sources. The reactive...
Journal Articles
Publisher: ASTM International
Article Type: Discussions
Cement, Concrete & Aggregates. January 1985, 7(2): 110–111.
Published Online: January 1, 1985
...GM Idorn activation energy concretes mortars (materials) strength temperature Arrhenius equation equivalent age maturity nondestructive tests References Verbeck , G. J. , “ Energetics of the Hydration of Portland Cement ,” Proceedings of the 4th International Symposium...
Journal Articles
Publisher: ASTM International
Article Type: Research-Article
Cement, Concrete & Aggregates. January 1984, 6(2): 61–73.
Published Online: January 1, 1984
...NJ Carino The maturity method may be used to predict the in-place strength of hardening concrete based on its thermal history. A theoretical basis for the maturity method is presented. The general form of the time-temperature function is found to be the time integral of the rate constant...