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.  .