TY - JOUR ID - TI - EFFECT OF USING LIMESTONE AS A PARTIAL SUSTAINABLE MATERIAL ON DRYING SHRINKAGE OF CONCRETE AU - Jasmine Majed Taofeq AU - Mouhamed Mosleh Salman PY - 2018 VL - 22 IS - 2 conference proceedings (Part-1) SP - 30 EP - 45 JO - Journal of Engineering and Sustainable Development (JEASD) مجلة الهندسة والتنمية المستدامة SN - 25200917 25200925 AB - Drying shrinkage can be reduced by using maximum practical amount of aggregate in the mix lowest water to cement ratio or by using some material helps to reduce shrinkage .Therefore different percentage of limestone ( 0 -10 -20 -30 %) were used by replacement of cement in both conventional and self-compacting concrete for studying strength and drying shrinkage .For each mix nine cubes (150 ×150 ×150 mm) for compressive strength ,six prisms (100 ×100 ×500 mm) for flexural strength,six cylinders ( 100 ×300 mm) for tensile splitting strength and four prisms (75 ×75 ×285 mm) for shrinkage test . Also, some tests such as slump flow, L-box and V-funnel made on fresh concrete for testing workability and segregation. The results increased by increasing filler material for all fresh concrete test except blocking ratio of L-box and maximum strength for CC was 45.84 MPa at 28 days when replaced 30 % of cement by limestone and 36 MPa at 56 days at 0% replacement for SCC. Maximum flexural for SCC was 2.50 MPa at 56 days with 30% replacement and 2.73 MPa for CC at 56 days with 0% replacement. Maximum splitting strength was 5.10 MPa at 56 days with 10% replacement for SCC and 4.11 MPa for CC at 28 days and 30% replacement. While for shrinkage test, the result was 557.5 micro strain at air and 390.3 micro strain for water at 90 days and 30% replacement for CC. while 680.5 micro strain at air and 436.1 micro strain for water at 90 days and 30% replacement for SCC.

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