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modifications of the concrete prism test when

modifications of the concrete prism test when

MODIFICATIONS OF THE CONCRETE PRISM TEST WHEN

2020-11-15  MODIFICATIONS OF THE CONCRETE PRISM TEST WHEN TESTING LOW-ALKALI CEMENT WITH SCM SYSTEMS FOR MITIGATION OF ALKALI-SILICA REACTION Soley U. Einarsdottir 1 *, R. Douglas Hooton 1University of Toronto, Toronto, ON, CANADA Abstract When carrying out laboratory tests for ASR, the currently used ASTM C1260 and C1293

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Modifications to Laboratory Test Methods to Evaluate

2017-12-19  Leaching from concrete prisms ranged from 25-50% but covering each prism with a plastic bag reduced the leaching to only about 10%, without reducing the expansion measured. By modifying the alkali boosting procedure, and with the use of improved storage conditions to minimize alkali leaching, it is possible to use the concrete prism test for evaluating the benefits of concrete mixtures made with low-alkali cements.

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Modifications to Laboratory Test Methods to Evaluate the ...

2017-12-19  conditions to minimize alkali leaching, it is possible to use the concrete prism test for evaluating the benefits of concrete mixtures made with low-alkali cements. The storage solution for the accelerated mortar bar test provides an abundance of alkali ions to cause ASR, making it unfit to evaluate low-alkali cement mixtures.

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CS1 : 2010 Testing Concrete and Quality Scheme for the ...

2013-6-13  Major changes in the test procedures and testing machine. (1) Calibration of testing machines – the CS1:2010 adopts the requirements of BS EN 12390 as compared to that of BS 1610 in CS1:1990; (2) The requirements of HOKLAS Supplementary Criteria No. 36 has been included in CS1:2010; (3) In CS1:2010, the loading rates for determining the compressive ...

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Test Method RC 376.04 - Alkali Aggregate Reactivity

2019-10-6  The test follows AS 1012.13, except where noted below. 2. Apparatus Apparatus shall be as used in AS 1012.13 except that: (a) The drying room shall be replaced by a moist cabinet maintained at 38 oC and at least 98% relative humidity 3. Procedure The test is performed on duplicate specimens of concrete prisms and as per AS 1012.13 except that:

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CONCRETE TECHNOLOGY Evaluation of Alkali Silica

2014-4-7  Comparison of 2-year expansion in ASTM C1293 concrete prism test (CPT) with expansion of the same SCM-aggregate combinations in the (a) standard ASTM C1260/C1567/AMBT tests at 14 days and (b) non-standard 28-day test (Thomas et al. 2007). Table 2. Summary of C1293 and Non-Standard (28-d) Accelerated Mortar Bar Test Results (Thomas et al. 2007)

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Alkali-silica reactivity criteria for concrete aggregates ...

The TAL, In k, and Cd were determined using a modified version of the RILEM AAR-3 concrete prism expansion test, the ASTM C1260 mortar-bar expansion test, and the infrared spectroscopy test, respectively. It was found that the three reactivity criteria are all appropriate for discriminating between reactive and innocuous aggregates.

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EARLY ASSESSMENT OF ALKALI-SILICA ... - ICAAR Concrete

2020-11-15  ASTM C 1293 – Concrete Prism Test AAFA and OPC prisms were prepared according to standard specifications. A pan mixer was used for mixing the concretes. After mixing, the AAFA concrete was poured in molds and cured at 23 ºC, at 100% relative humidity for 24 hours. Next, the AAFA prisms were steam cured at 60 ºC

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042200 Concrete Unit Masonry (DSA-OSHPD)

2020-12-15  a. Concrete Masonry Units: Test per ASTM C140. Mortar and grout tests are required for the unit strength method (Section 2105A.2.2.1.4). b. Grout: Test per ASTM C1019. OR - PRISM TEST METHOD : Although code does not require the prism test method for

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Effects of specimen size on assessment of shrinkage ...

2016-10-1  Since the volumetric change of concrete can be divided into shrinkage caused by cement hydration (i.e., autogenous shrinkage) and that caused by moisture movement (drying shrinkage), two fictitious temperature drops, which reflect these two factors respectively, can be derived using the results of the free shrinkage test. For the concrete prism with all surfaces sealed in free shrinkage test, there

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CS1 : 2010 Testing Concrete and Quality Scheme for the ...

2013-6-13  by concrete prism test. Major changes in the test procedures and testing machine (1) Calibration of testing machines – the CS1:2010 adopts the requirements of BS EN 12390 as compared to that of BS 1610 in CS1:1990; (2) The requirements of HOKLAS Supplementary

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Test Method RC 376.04 - Alkali Aggregate Reactivity

2019-10-6  Test Method Alkali Aggregate Reactivity Assessment - using the Concrete Prism Test RC 376.04 RC 376.04 June 2013 Final Page 1 of 1 1. Scope This test method is suitable for the assessment of aggregates for Alkali Silica Reactivity and also for Alkali Carbonate Reactivity. The test follows AS 1012.13, except where noted below. 2. Apparatus

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Preventing Alkali-Silica Reaction and Delayed Ettringite ...

2015-9-16  C 1293 (concrete prism test). In addi-tion, an outdoor exposure site, shown in Figure 1, was developed under this project to evaluate real-world behavior of concrete blocks exposed to climatic conditions in Austin, Texas. Some of the main conclusions re-garding ASR test methods include the following: The concrete prism test (ASTM C

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CS1-2010 Vol 1 Rev 00 draft final-101130 - CEDD

2019-6-13  including methods of sampling fresh concrete, testing of fresh concrete and making and curing test specimens. Volume 2 is intended to be used by laboratory staff and covers sampling of fresh concrete in the laboratory, methods of determining the physical properties of hardened concrete and the sampling and chemical analysis of hardened concrete.

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4. Test results of the Prisms Casey Concrete Wexford

Graph (1). Research of compressive strength test results of prisms samples: The results have shown that, the increase in compressive strength of prisms samples containing GGBS after 56 days of ripening in tank water was significantly higher than other concrete made with 100% CEM II/A-L.

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Using the accelerated Brazilian concrete prism test

This work presents the development of a new and accelerated concrete prism test called ABCPT (accelerate Brazilian concrete prism test) as an attempt to create a reliable and fast test that can analyze and classify the potential reactivity of aggregates in the laboratory. For this research, six aggregates from different lithotypes were used.

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Construction Standard CS1:2010 - CEDD

2019-6-13  Section 6 Determination of air content of fresh concrete . Section 7 Making test cubes from fresh concrete . Section 8 Making test beams from fresh concrete . Section 9 Making test cylinders from fresh concrete . Section 10 Curing test specimens . Appendix A Apparatus . Appendix B Calibration tests

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ITEM 557.630YXX08 – HPIC CONCRETE FOR

2019-11-14  Apply the provisions of §557-3 and the following modifications: Curing shall be as per §557-3.11, except that when either stainless steel or AASHTO M334 steel is used, the curing duration shall be reduced to the greater of 72 hours or when the concrete reaches 3000 psi.

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Rapid test method for determining alkali-silica reactivity ...

2020-10-13  Rapid test method for determining alkali-silica reactivity expansion in concrete and aggregate Douglas R. Pac University of New Hampshire, Durham Follow this and additional works at:https://scholars.unh/thesis This Thesis is brought to you for free and open access by the Student Scholarship at University of New Hampshire Scholars' Repository.

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Flexural Test on Concrete - Significance, Procedure

Flexural test evaluates the tensile strength of concrete indirectly. It tests the ability of unreinforced concrete beam or slab to withstand failure in bending. The results of flexural test on concrete expressed as a modulus of rupture which denotes as ( MR) in MPa or psi. The flexural test on concrete can be conducted using either three point ...

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CS1 : 2010 Testing Concrete and Quality Scheme for the ...

2013-6-13  by concrete prism test. Major changes in the test procedures and testing machine (1) Calibration of testing machines – the CS1:2010 adopts the requirements of BS EN 12390 as compared to that of BS 1610 in CS1:1990; (2) The requirements of HOKLAS Supplementary

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MITIGATING ALKALI SILICATE REACTION IN RECYCLED

2020-1-28  RECYCLED CONCRETE BY HUGH C. SCOTT IV B.S., University of New Hampshire, May 2000 THESIS ... Testing Modifications.....15 2. MATERIALS ... prism beam test

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CS1-2010 Vol 1 Rev 00 draft final-101130 - CEDD

2019-6-13  including methods of sampling fresh concrete, testing of fresh concrete and making and curing test specimens. Volume 2 is intended to be used by laboratory staff and covers sampling of fresh concrete in the laboratory, methods of determining the physical properties of hardened concrete and the sampling and chemical analysis of hardened concrete.

get price

4. Test results of the Prisms Casey Concrete Wexford

Graph (1). Research of compressive strength test results of prisms samples: The results have shown that, the increase in compressive strength of prisms samples containing GGBS after 56 days of ripening in tank water was significantly higher than other concrete made with 100% CEM II/A-L.

get price

Construction Standard CS1:2010 - CEDD

2019-6-13  Section 6 Determination of air content of fresh concrete . Section 7 Making test cubes from fresh concrete . Section 8 Making test beams from fresh concrete . Section 9 Making test cylinders from fresh concrete . Section 10 Curing test specimens . Appendix A Apparatus . Appendix B Calibration tests

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042200 Concrete Unit Masonry (DSA-OSHPD)

2020-12-15  a. Concrete Masonry Units: Test per ASTM C140. Mortar and grout tests are required for the unit strength method (Section 2105A.2.2.1.4). b. Grout: Test per ASTM C1019. OR - PRISM TEST METHOD : Although code does not require the prism test method for

get price

ITEM 557.630YXX08 – HPIC CONCRETE FOR

2019-11-14  Apply the provisions of §557-3 and the following modifications: Curing shall be as per §557-3.11, except that when either stainless steel or AASHTO M334 steel is used, the curing duration shall be reduced to the greater of 72 hours or when the concrete reaches 3000 psi.

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CRD-C49-74 Supplementary Standard Methods of

2017-3-24  2 MAKING AND CURING CONCRETE TEST SPECIMENS (C 49-73) thermal-diffusivity test shall be made and cured in accordance with require-ments for compression test specimens (CRD-C 10), except that each speci-men shall be molded with a thermo-couple embedded at the center of mass. 5. Cubes for Determination of Thermal Diffusivity of Mass Concrete (CRD ...

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Rapid test method for determining alkali-silica reactivity ...

2020-10-13  Rapid test method for determining alkali-silica reactivity expansion in concrete and aggregate Douglas R. Pac University of New Hampshire, Durham Follow this and additional works at:https://scholars.unh/thesis This Thesis is brought to you for free and open access by the Student Scholarship at University of New Hampshire Scholars' Repository.

get price

Flexural Test on Concrete - Significance, Procedure

Flexural test evaluates the tensile strength of concrete indirectly. It tests the ability of unreinforced concrete beam or slab to withstand failure in bending. The results of flexural test on concrete expressed as a modulus of rupture which denotes as ( MR) in MPa or psi. The flexural test on concrete can be conducted using either three point ...

get price