Bricks get hot and have silica and aluminium in the clay used.
The major components of brick are Silica, Alumina, Lime, Iron oxide and Magnesia. If you observe the composition, all 4 materials are capable of quickly getting hot under the sun and air. Did you know that the clay brick bricks used today were made to trap heat and become hot? Yes, the clay brick used in today's times in India is a European creation that was meant to protect the citizens from the harsh cold outside by trapping heat and retaining it inside the house, it was also created for rapid development as the nations of Europe were warring and they required a material to promote rapid development. In contrast, India has a totally different climate than Europe and can't use bricks designed for European climate. The initial use of clay brick in India began when India attained Independance. Since we lost all roots to our tradition, the prime minister at that time, Jawaharlal Nehru, introduced the architect Le Corbusier (a French national) to design the "modern"