Development of rapid-set high-strength cement using statistical experimental design

Development of rapid-set high-strength cement using statistical experimental design

Many applications like aircraft runway, busy roads, highway or motorways, water tank repair, etc. demand a cement that sets fast and gains the required strength in a few hours. Though there are few cements available to meet the requirements given above, most of them are very costly, like magnesium p...

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Bibliographic Details
Published in:Cement and concrete research Vol. 33; no. 9; pp. 1287 - 1292
Main Authors: Srinivasan, C.B., Narasimhan, N.Lakshmi, Ilango, S.V.
Format: Journal Article
Language:English
Published: New York, NY Elsevier Ltd 01-09-2003
Elsevier Science
Subjects:
Admixture
Analysis of cement phases and constituents
Applied sciences
Buildings. Public works
Cement concrete constituents
Cement paste
Cements
Compressive strength
Exact sciences and technology
Experimental design
Materials
Mortar
Properties of anhydrous and hydrated cement, test methods
Compressive strength
Mortar
Experimental design
Admixture
Cement paste
Addition
Experimental study
Variance analysis
Cement mortar
Formulation
Aluminous cement
Product development
Setting time
High strength cement
Physicochemical properties
Drying
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Summary:Many applications like aircraft runway, busy roads, highway or motorways, water tank repair, etc. demand a cement that sets fast and gains the required strength in a few hours. Though there are few cements available to meet the requirements given above, most of them are very costly, like magnesium phosphate cement, jet cement, geopolymeric cement, etc. So, an attempt has been made to make cost-effective rapid-set high-strength cement having initial setting time of ∼15 min, final setting time of ∼30 min, 4 h cold compressive strength (CCS) of ∼12 MPa (minimum), 8 h CCS of ∼24 MPa and 1 day CCS of ∼40 MPa for the neat cement. The experiments were designed using orthogonal array technique in L 9 array with three factors, namely OPC/high-alumina cement/anhydrous calcium sulphate, fineness of the cement, and type of additives, at three levels each. The responses studied are initial setting time, final setting time, and CCS after 4, 8, and 24 h curing. The response data were analysed using analysis of variance (ANOVA) technique with a software package, ANOVA by Taguchi Method (ATM). In the case of setting time, fineness of the cement and OPC/HAC/anhydrous calcium sulphate ratio plays a significant role. Additive type and the OPC/HAC/anhydrous calcium sulphate are significant factors affecting the CCS at different ages. The confirmatory trial results clearly indicate that the setting time and CCS at different ages targeted were achieved using design of experiments.
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ISSN:0008-8846
1873-3948
DOI:10.1016/S0008-8846(03)00041-3