ASTM C1314 PDF

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C Standard Test Method for Compressive Strength of Masonry Prisms masonry prisms~ Standard + Redline PDF Bundle ASTM License Agreement . Scope* C Specification for Grout for Masonry. ASTM Standards:2 f 'mspecified compressive strength of masonry. C Specification for Aggregate for Masonry Mortar meets the specified compressive strength. C Resistencia a La Compresion de Prismas de Mamposteria - Download as PDF File .pdf), Text File .txt) or read online. astm.


Astm C1314 Pdf

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Keywords:ASTM standards, compressive strength, prisms from existing construction, prism . ASTM C contains provisions for determining the compressive. ASTM C Standard Test Method for Compressive Strength of Masonry Prisms. ASTM C Edition, December 1, PDF + Print. In Stock. 1. Prism Compressive Strength. Designer states compressive strength, f'm. Compliance is verified by either: A. Prism testing (ASTM C): Two unit high prism.

When prisms are used for field quality control or assurance, record the location in the structure that corresponds to the set of prisms constructed. NOTE 2Building codes or project specifications may require a set of prisms for a given square footage of construction. Recording the location of the structure that corresponds to a set of prisms allows the test results to be attributed to a particular portion of the structure.

Construct prisms on a flat, level base. Construct prisms in a location where they will remain undisturbed until transported for testing. Orient units in the prism as in the corresponding construction.

At the time of prism construction, the surfaces of the units shall be free of moisture. Where the corresponding construction is of multi-wythe masonry having wythes composed of different units or mortar, build prisms representative of each different wythe and test separately. Any required saw cutting shall be performed on units prior to prism construction. The moisture content s of units used to construct prisms shall be representative of those used in construction.

Prisms composed of units that contain closed cells shall have at least one complete cell with one full-width cross web on either end see Fig. Prisms composed of units without closed cells shall have as symmetrical a cross section as possible.

The minimum length of prisms shall be 4 in. Thus, these reduced length unit prisms are less likely to be damaged and are more likely to be properly capped and tested. Also, the smaller prism will be less likely to be affected by plate bending effects during testing, as described in Note 9, and will therefore provide a more accurate assessment of the strength of the materials in the masonry prism.

For these reasons, the use of reduced length prisms is encouraged.

Use mortar representative of that used in the corresponding construction. Use mortar joint thickness and a method of positioning and aligning units, that are representative of the corresponding construction. Use mortar joints that are cut flush.

For prisms to be grouted, remove mortar fins that protrude into the grout space. When prisms are used for other FIG. C 11a purposes, grout prisms not less than 4 h nor more than 48 h following the construction of the prisms. NOTE 4Testing of prisms may be part of a projects field quality control or assurance program. These prisms are intended to be representative of a constructed masonry element such as a wall, column, pilaster, or beam. They are built as companions to the masonry element at a jobsite where the masonry element is site-constructed, or within a factory or shop where the element is shop-built.

Standard Test Method for Compressive Strength of Masonry Prisms

Prisms may also be fabricated in a laboratory for research purposes. Use grout representative of that used in the corresponding construction.

Before placing grout, remove mortar droppings from the grout space. Use grout consolidation and reconsolidation procedures representative of those used in the construction. Place additional grout into the prisms as necessary after each consolidation. Screed off excess and finish the grout so that it is level with the top of the prism and in contact with the units at the perimeter of the grout space.

Grouted prisms shall contain no reinforcement. Brace forms to prevent displacement during grouting.

Grout as described in 5. Do not disturb or move prisms for the first 48 h after construction and grouting. Keep prisms in the moisture-tight bags until 48 h prior to testing. Obtaining and Transporting Masonry Prisms 6. Secure prisms and specimens to prevent jarring, bouncing, or tipping over during transporting. Extend storage time as needed to ensure dry surface conditions of the prisms at the time of testing.

Test a set of prisms at each age.

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Prism age shall be determined from the time of laying units for ungrouted prisms, and from the time of grouting for grouted prisms. Measurements and Determination of Net Area 8. Determine the length and width by averaging the four measurements of each dimension. Measure the height of the prism at the center of each face to the nearest 0.

Determine the height by averaging the four measurements. NOTE 5Prisms obtained from field-removed masonry specimens will have many different sizes, shapes, and configurations. These variations are a result of differing bonding arrangements, mortaring or joining practices, presence of reinforcement and other accessories in conjunction with the masonry in service, and of techniques used to remove the specimens from wall assemblies.

These variations may create non-uniform prism dimensions along its length or in its cross-section. The values given in parentheses are mathematical tured Masonry Units and Masonry Specimens for Testing conversions to SI units that are provided for information only E Practice for Probability Sampling of Materials and are not considered standard.

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It is the responsibility of the user of this standard to establish appro- 3. Terminology priate safety and health practices and determine the applica- 3. Referenced Documents 2. Aggregates 3. C Specification for Mortar for Unit Masonry 4. Decisions C Published August Originally determining the net area, and interpreting the results of approved in Last previous edition approved in as C DOI: No further reproductions authorized.

C 14 deviations from this test method shall be reported. Such research prisms shall not be used to verify compliance with a specified compressive strength of masonry. Masonry Prism Construction 5. If units have flutes or ribs that project 12 in.

When prisms are used for field quality control or assurance, record the location in the structure that corresponds to the set of prisms constructed. NOTE 2Building codes or project specifications may require a set of prisms for a given square footage of construction. Recording the location of the structure that corresponds to a set of prisms allows the test results to be attributed to a particular portion of the structure.

Thus, these reduced length unit prisms 5. Construct and tested. Also, the smaller prism will be less likely to be affected by prisms on a flat, level base. Construct prisms in a location plate bending effects during testing, as described in Note 9, and will where they will remain undisturbed until transported for therefore provide a more accurate assessment of the strength of the materials in the masonry prism.

For these reasons, the use of reduced testing. Orient units in the prism as in webs and face shells of hollow units. Use mortar representa- the corresponding construction. At the time of prism tive of that used in the corresponding construction. Use mortar construction, the surfaces of the units shall be free of moisture.

Use sonry having wythes composed of different units or mortar, mortar joints that are cut flush. For prisms to be grouted, build prisms representative of each different wythe and test remove mortar fins that protrude into the grout space. The moisture content s of units used to construct 5. Prisms composed of units that contain closed cells shall have at 5.

Prisms composed of units without closed cells assurance, build prisms at the same time as the corresponding shall have as symmetrical a cross section as possible. The construction, and grout prisms when the corresponding con- minimum length of prisms shall be 4 in.

When prisms are used for other FIG. C 14 purposes, grout prisms not less than 4 h nor more than 48 h 7. These prisms are intended to be represen- prior to testing. They are built as companions to the masonry element at a jobsite where the masonry element is site-constructed, or within a factory or shop temperatures exceeding storage temperature requirements at where the element is shop-built.

Prisms may also be fabricated in a any time prior to testing. Extend storage time as needed grouted, solidly grout the prisms. Use grout representative of to ensure dry surface conditions of the prisms at the time of that used in the corresponding construction.

Before placing testing. Use 7.

Test a set of prisms at each age. Prism age shall be tative of those used in the construction. Place additional grout determined from the time of laying units for ungrouted prisms, into the prisms as necessary after each consolidation. Screed and from the time of grouting for grouted prisms.

Measurements and Determination of Net Area grout space. Grouted prisms shall contain no reinforcement. Determine the length and as described in 5. Determine the height by averaging the units as forms to confine the grout during placement.

Brace four measurements. Grout as 8. NOTE 5Prisms obtained from field-removed masonry specimens will 5. Do not disturb or move have many different sizes, shapes, and configurations. These variations are prisms for the first 48 h after construction and grouting. Keep a result of differing bonding arrangements, mortaring or joining practices, prisms in the moisture-tight bags until 48 h prior to testing.No further reproductions authorized.

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Aggregates 3. Before placing grout, remove mortar droppings from the grout space. C 14 deviations from this test method shall be reported. Determine the height by averaging the four measurements. The compressive stress of lightweight block is the weakest with the average compressive stress of 2.

C 11a deviations from this test method shall be reported. Prism age shall be tative of those used in the construction.

For prisms to be grouted, remove mortar fins that protrude into the grout space.

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