The Effect Of Constituent Proportions On Stress Strain Characteristics Of Portland Cement Lime Mortar And Grout
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Author | : W. Sriboonlue |
Publisher | : |
Total Pages | : 9 |
Release | : 1990 |
Genre | : Compressive strength |
ISBN | : |
The results of an experimental program designed to evaluate the influence of constituent proportions on the stress-strain relationship of Portland cement-lime mortar and grout are reported. Grout specimens consisting of 76 millimeter by 152 millimeter cylinders and mortar specimens of 50 millimeter cubes were cast and tested. Mix variations included lime and sand content. Modulus of elasticity of both mortar and grout specimens using different parts of lime and sand are presented. In addition, the relationship of the ultimate compressive strength and modulus of elasticity for various mixes is presented. Mortar cube specimens were constructed following ASTM C270, Standard Specification for Mortar for Unit Masonry. The water content used in mortar was measured as different percentages of flow of fresh mortar. Grout specimens were made in accordance with the ASTM C476, Standard Specification for Grout for Masonry. The water content was measured as different slumps of the grout. The specimens were tested at age twenty-eight days. The results define trends, resulting from varying the constituents, in the stiffness characteristics of mortar and grout.
Author | : John H. Matthys |
Publisher | : ASTM International |
Total Pages | : 440 |
Release | : 1990 |
Genre | : Concrete masonry |
ISBN | : 0803114532 |
Author | : |
Publisher | : |
Total Pages | : 2470 |
Release | : 1991 |
Genre | : Chemical abstracts |
ISBN | : |
Author | : Olin W. Finley |
Publisher | : |
Total Pages | : 64 |
Release | : 1907 |
Genre | : |
ISBN | : |
Author | : George C. Hoff |
Publisher | : |
Total Pages | : 128 |
Release | : 1974 |
Genre | : Cement |
ISBN | : |
Author | : Arthur Carl Alvarez |
Publisher | : |
Total Pages | : 8 |
Release | : 1915 |
Genre | : Cement |
ISBN | : |
Author | : A. Mohammed |
Publisher | : |
Total Pages | : 21 |
Release | : 2020 |
Genre | : Strains and stresses |
ISBN | : |
In this study, the effects of metakaolin clay (MK) on the rheological properties, setting time, compressive strength, and toughness of cement grouts with water-cement ratios (w/c) of 0.6 and 1.0 were investigated. Based on the information in the literature, the amount of MK used in various mix designs varied up to 10 % by the weight of cement. The compressive stress-strain behavior of cement grout modified with MK was investigated up to 90 days of curing. The addition of 10 % of MK increased the apparent viscosity of the cement grout from 20 cP to 62 cP and from 13 cP to 44 cP with w/c ratios of 0.6 and 1, respectively. Setting time of cement grout mixes with a w/c ratio of 1.0 had longer initial and final setting times than the grout mixes with a w/c ratio of 0.6. The addition of 10 % MK increased the compressive strength of the cement grouts with w/c ratios of 0.6 and 1 from 8 MPa (1,175 psi) to 30.1 MPa (4,366 psi) and from 2.4 MPa (348 psi) to 17.8 MPa (2,582 psi) after 90 days of curing, respectively. The addition of 10 % MK increased the toughness of the cement grouts with w/c ratios of 0.6 and 1 from 1.42 J m -3 to 2.27 J.m -3 and from 0.94 J.m -3 to 1.38 J.m -3 after 90 days of curing, respectively. The Vipulanandan p - q model was used to predict the changes in stress-stain behavior with curing time. The Vipulanandan rheological model also has a limit on the shear stress were as the other model did not have a limit. Based on the Vipulanandan rheological model, the maximum shear stresses produced by the portland cement grouts with w/c ratios of 0.6 and 1 with 0 MK were 58 Pa and 33 Pa, respectively. The addition of 10 % MK to the Portland cement (PC) grouts increased the maximum shear stresses by 155 % and 136 % for w/c ratios of 0.6 and 1, respectively.
Author | : |
Publisher | : |
Total Pages | : 562 |
Release | : 1986 |
Genre | : Canadian Masonry Symposium |
ISBN | : |
Author | : William Franklin Lefiles |
Publisher | : |
Total Pages | : 190 |
Release | : 1963 |
Genre | : Strength of materials |
ISBN | : |
Author | : Arthur Carl Alvarez |
Publisher | : |
Total Pages | : 18 |
Release | : 1918 |
Genre | : Cement |
ISBN | : |