Last updated 4th June 2025

ASTM C595 Standard Specification for Blended Hydraulic Cements

ASTM C595 specifies blended hydraulic cements assembled by mixing Portland cement or clinker with slag, pozzolans, or both. It lists standards for materials, how they are made, and how to test them to guarantee quality. The standard covers cements used in ordinary and special types of concrete. It outlines the types, methods for getting samples, and tests that can be done for blended cements.

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ASTM C595 Introduction

It sets out standards for mixing hydraulic cements that increase the strength and durability of concrete. Combining Portland cement with extra materials like slag and pozzolans gives better chemical resistance and improved workability. Using ASTM C595, cement is made so that it meets the needs of different building projects.

ASTM C595 Test Method

Sampling and PreparationTaking samples of blended cement is done according to the required methods to present the batch properly. 
Mixing ProcedureThe blended cement is mixed with water in controlled conditions before testing.
Testing and CuringSome tests used are chemical analysis, checking the material’s size by sieving, and seeing how much the material can absorb air. Before testing compressive strength and other properties, specimens are cured under certain conditions to make sure they are compliant.

ASTM C595 Equipment and Sample Preparation

Specimen DetailsCommonly, specimens are cut in standard shapes and sizes so they can be used for testing both strength and fineness. 
EquipmentThere are sieves for checking fineness, an air permeability device, tools for chemical analysis, and molds for testing the strength of samples. 

ASTM C595 Results and Interpretation

Blended cement needs to meet set limits regarding its chemistry, how fine it is, and how strong it is. For strength, samples are averaged, and all must reach at least 90% of the set standard. The same chemical and physical properties in each product prove that the blending and manufacturing are well-controlled.

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Tests Related to ASTM C595

ASTM C595 is related to other tests, including ASTM C150 for Portland cement, ASTM C114 for the chemical analysis of hydraulic cement, and ASTM C151 for hydraulic cement expansion testing. 

Use of ASTM C595 Testing in Various Industries

  • Building strong concrete for bridges, highways, and buildings
  • Concrete is produced that is more resistant to sulfate attack and less permeable.
  • Those applications that must resist chemicals and last for a long time

Common Challenges and Troubleshooting in ASTM C595 Testing

  • The performance of cement can be affected by how variable slag or pozzolan quality is.
  • Problems with achieving an even and fine mixture of the materials
  • Sampling enough product to show the range of its quality

FAQ's

Where can I get the astm c595 tested?

You can share your astm c595 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c595 test to various testing techniques.

How much do I need to pay for the astm c595 test?

Please contact us for a detailed quote for your astm c595 testing needs. Cost incurred to carry out different astm c595 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.

How many samples are required for astm c595?

The required number of samples or specimens should comply with the procedure given in the astm c595 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.

How much discount can I get on the astm c595 test?

MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.

How many days will it take to complete the astm c595 test?

The turnaround time for astm c595 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.

Where can I get the astm c595 tested?

You can share your astm c595 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c595 test to various testing techniques.

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