1.Introduction and background.- 2. RR-participants.- 3. Brief description of the Dilation Rigs.- 4, Round-Robin tests, plan and execution.- 4.1 Materials.- 4.2 Mortar tests.- 4.3 Cement paste tests.- 5 Mortar test results.- 5.1 Fresh properties and 28-days strength.- 5.2 Supporting test results.- 5.3 Dilation Rig results, autogenous deformation.- 6 Statistical evaluation of the Dilation Rig results.- 6.1 Prerequisites, Objectives and procedure.- 6.2 A concept for the estimation of candidates of outliers from unbiased samples.- 6.3 Analysis of the data - Calculation of outliers.- 6.4 Statistical attributes of AD and AS.- 6.5 Summary and conclusions.- 7 Cement paste test results.- 7.1 Supporting test results.- 7.2 Dilation Rig test results.- 8 Summary and conclusions.- 9 References.- APPENDIX 1 Cement analyses.- APPENDIX 2 Sand grading curve.- APPENDIX 3 Data sheet, superplasticizer.- APPENDIX 4 Description of equipment, made by the participants.