Use of natural beach sand and powdered stone in making high strength concrete | |
| Author | Proboyo, Alvin |
| Call Number | AIT Thesis no.ST-05-14 |
| Subject(s) | Concrete--Testing Sand High strength concrete |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-05-14 |
| Abstract | An experimental study was conducted to investigate the use of natural beach sand as fine aggregate in making High Strength Concrete (HSC) with the compressive strength at 28 days between 80 and 120 MPa. This experimental study was divided into two main parts. The first part deals with the use of natural beach sand and natural river sand in making HSC and the second part deals with the use of dolomite and limestone powder as partial replacement in HSC containing natural beach sand. The experimental tests were carried out to determine the physical properties of HSC using natural beach sand having fineness moduli 2.5, 2.75, and 3.0. Test results showed that it is feasible to use natural beach sand which was taken from Rayong Province in Thailand in making HSC. The test results showed that for the range of fineness moduli investigated, the compressive strengths at 28 days were varied between 80 and 120 MPa with fineness modulus 2.75 gave the highest compressive strength. The strength of HSC using beach sand as fine aggregate is approximately 15% higher than HSC using river sand with the same fineness modulus. It is supported also by the low chloride content of this natural beach sand which was below the permissible amount allowed by Bristish Standard 882 1992. It was found that the use of powdered stone as partial replacement of fine aggregate resulted in a slightly higher compressive strength and required slightly higher dosage of superplasticizer to produce the same workability. On the other hand, the use of powdered stone as partial replacement of cement produced lower strength with lower dosage of superplasticizer. This lower dosage of superplasticizer with acceptable compressive strength can give advantage from the economical point of view comparing with the control due to the higher cost of superplasticizer. The highest compressive strength was obtained by using natural beach sand with 30% replacement of dolomite powder. This HSC also produced the lowest absorption capacity. Replacing some portion of fine aggregate with finer material such as dolomite powder can make the concrete denser which leads to the increase of the compressive strength of HSC. |
| Year | 2005 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-05-14 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pichai Nimityongskul; |
| Examination Committee(s) | Pennung Warnitchai;Tawatchai Tingsanchali; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2005 |