Mulalo Doyoyo (born 13 August 1970) is a South African engineer, inventor, and professor. Doyoyo is a researcher in applied mechanics, ultralight materials, green building, renewable energy, and other fields of engineering. He has lectured in different engineering disciplines including ocean engineering, civil and environmental engineering, and mechanical engineering. Doyoyo invented a cementless concrete, Cenocell, and Amoriguard coatings. Early life and education Mulalo Doyoyo was born at William Edie Hospital in Tshidimbini Venda to Khorommbi Doyoyo and Mudzuli (née Dzaga) of Vondwe village. Venda was a bantustan in northern South Africa during apartheid and is now part of the Limpopo Province. He started his bantu education schooling at Vondwe Lower Primary School in 1977 and then moved on to Tshidimbini Higher Primary School in 1981. He joined Tshidimbini Secondary School in 1984 where he studied until 1985. In 1986, he registered at Mbilwi Secondary School. He was later voted as the head boy of the school, matriculating in 1988. He chose to pursue his studies at the University of Cape Town. He was enrolled at the university in a five-year engineering bridging program, which at the time was designed for bantu education matriculates. He resided in Smuts Hall, where he became a tutor in science and engineering, eventually becoming a head tutor. He became a publication officer of the student engineering council, a student representative of the South African Institute of Aerospace Engineers, and a founder of the student aerospace society in the faculty of engineering and the built environment. Doyoyo's honors thesis was on the design and construction of mechanical equipment to investigate false brinelling of heavy-duty bearings in electric motors. He earned masters' degrees in solid mechanics and applied mathematics in 1995 and 1996, respectively. His doctoral research was based on the field of ballistics focusing on the design of light-weight armors. He defended his doctoral thesis in engineering in 1999. His thesis was entitled, "Experimental studies of subsonic penetration in silica glasses and ceramics". He employed granular material physics to describe fragment ejecta behaviour and to predict the impact depth of projectiles as a function of impact velocity. Noting an anomalous behaviour from the experimental observations, he applied the variational perturbation theory to reveal and explain the role played by the increase in mass density during the failure of brittle materials under dynamic compression. In 1999, he accepted a postdoctoral researcher position from the Massachusetts Institute of